WO2023015453A1 - Circuit d'alimentation électrique, circuit d'attaque et procédé de commande - Google Patents

Circuit d'alimentation électrique, circuit d'attaque et procédé de commande Download PDF

Info

Publication number
WO2023015453A1
WO2023015453A1 PCT/CN2021/111828 CN2021111828W WO2023015453A1 WO 2023015453 A1 WO2023015453 A1 WO 2023015453A1 CN 2021111828 W CN2021111828 W CN 2021111828W WO 2023015453 A1 WO2023015453 A1 WO 2023015453A1
Authority
WO
WIPO (PCT)
Prior art keywords
power supply
node
supply circuit
resistor
switch
Prior art date
Application number
PCT/CN2021/111828
Other languages
English (en)
Inventor
Qiuxiang MAO
Shengwei Liu
Original Assignee
Tridonic Gmbh & Co Kg
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Tridonic Gmbh & Co Kg filed Critical Tridonic Gmbh & Co Kg
Priority to PCT/CN2021/111828 priority Critical patent/WO2023015453A1/fr
Priority to EP21953084.7A priority patent/EP4364530A4/fr
Priority to CN202180102364.9A priority patent/CN117999855A/zh
Publication of WO2023015453A1 publication Critical patent/WO2023015453A1/fr

Links

Images

Classifications

    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
    • H05B45/30—Driver circuits
    • H05B45/37—Converter circuits
    • H05B45/3725—Switched mode power supply [SMPS]
    • H05B45/385—Switched mode power supply [SMPS] using flyback topology
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M1/00—Details of apparatus for conversion
    • H02M1/0003—Details of control, feedback or regulation circuits
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
    • H05B45/30—Driver circuits
    • H05B45/355—Power factor correction [PFC]; Reactive power compensation
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M1/00—Details of apparatus for conversion
    • H02M1/42—Circuits or arrangements for compensating for or adjusting power factor in converters or inverters
    • H02M1/4208—Arrangements for improving power factor of AC input
    • H02M1/4258—Arrangements for improving power factor of AC input using a single converter stage both for correction of AC input power factor and generation of a regulated and galvanically isolated DC output voltage
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
    • Y02B70/10—Technologies improving the efficiency by using switched-mode power supplies [SMPS], i.e. efficient power electronics conversion e.g. power factor correction or reduction of losses in power supplies or efficient standby modes

Definitions

  • Embodiments of the present disclosure generally relate to the field of lighting, and more particularly, to a power supply circuit, a driver and a controlling method.
  • a PFC (power factor corrector) circuit may convert an input AC (alternative voltage) voltage into an output DC (direct current) voltage.
  • the output voltage may be used to drive electrical device, for example, LED.
  • Fig. 1 is a diagram of a single stage flyback PFC for LED.
  • the single stage flyback PFC includes a first inductor L1, a rectifier (rectifier 1) , a first capacitor C1, a switch Q1 and a controller (IC) .
  • the switch Q1 is connected to a primary winding P1 of a transformer T1.
  • the controller (IC) controls the switch Q1 according to a sensed current Ip.
  • a diode D1, a second inductor L2, a second capacitor C2 and a third capacitor C3 are arranged on a secondary side of the transformer T1, so as to rectify and filter a voltage generated in the secondary winding S1, and output a DC voltage.
  • the DC voltage outputted from the single stage flyback PFC can be used to drive an LED.
  • the single stage flyback PFC can fulfill PF (power factor) and harmonic requirements of being LED driver.
  • the single stage flyback PFC may not achieve acceptable harmonic performance for part of the application, for example, for output current selectable application and wide output voltage range application, lower current has high distortion and so does low power at low output voltage.
  • embodiments of the present disclosure provide a power supply circuit, a driver and a controlling method.
  • a controller controls a switch of a flyback PFC according to a sampled mains sine wave form, thus harmonic character of the power supply circuit is improved with low cost.
  • a power supply circuit includes:
  • T1 a transformer (T1) , including a primary winding (P1) and a secondary winding (S1) ;
  • a switch (Q1) configured to be in series connection with the primary winding of the transformer coupled between a first node (A1) and a ground port;
  • a sampling circuit configured to be connected between the first node (A1) and the ground port, generate a sampled voltage of the first node (A1) ;
  • a controller configured to receive the sampled voltage from a first pin (1 COM) , and output a controlling signal from a second pin (6 DRAIN) to the switch, so as to control on/off state of the switch, the controlling signal is generated according to the sampled voltage and a sensed current corresponding to a current flowing through the switch.
  • the sampling circuit includes:
  • the first resistor (R3) and the first capacitor (C4) is in serial connection between the first node (A1) and the ground port,
  • the third resistor (R6) is coupled between a second node (A2) and the first pin (1 COM) of the controller, the second node (A2) electrically connects the first resistor (R3) and the first capacitor (C4) .
  • the power supply circuit further includes:
  • a second capacitor (C2) configured to be connected between the third resistor (R6) and the first pin (1 COM) .
  • the power supply circuit further includes:
  • a third capacitor (C1) configured to be connected between the first pin (1 COM) and the ground port;
  • a fourth resistor (R2) configured to be connected between a third node (A3) and the ground port, the third node (A3) connects the third resistor (R6) and the second capacitor (C2) .
  • the power supply circuit further includes:
  • a fifth resistor (R5) configured to be connected between a third pin (5 CS) of the controller and a fourth node (A4) ;
  • a sixth resistor (R9) configured to be connected between the ground port and the fourth node (A4) ;
  • a fourth capacitor (C6) configured to be connected between the third pin (5 CS) and the ground port
  • the fourth node (A4) connects the sixth resistor (R9) and the switch (Q1) .
  • the power supply circuit further includes:
  • a diode (D1) an anode of the diode is connected to the switch (Q1) ;
  • a seventh resistor (R8) configured to be connected between a cathode of the diode (D1) and the first node (A1) ;
  • a fifth capacitor (C3) configured to be connected between the cathode of the diode (D1) and the first node (A1) .
  • a driver used for driving a lighting device, the driver includes the power supply circuit according to the first aspect of the embodiments,
  • the power supply circuit providing power to the lighting device
  • control circuit communicates with the power supply circuit
  • control circuit communicates with a peripheral device.
  • a controlling method of a power supply circuit according to the first aspect of the embodiments, the controlling method includes:
  • the controller generates the controlling signal according to the sampled voltage and a sensed current corresponding to a current flow through the switch.
  • a controlling method of a power supply circuit including:
  • the first controller controlling the first switch network and the second switch network to work under a full-bridge mode or a half-bridge mode, according to the output voltage.
  • a controller controls a switch of a flyback PFC according to a sampled mains sine wave form, thus harmonic character of the power supply circuit is improved with low cost.
  • Fig. 1 is a diagram of a single stage flyback PFC for LED
  • Fig. 2 is a diagram of a power supply circuit in accordance with an embodiment of the present disclosure
  • Fig. 3 shows a flowchart of a controlling method of the power supply circuit 10
  • Fig. 4 is a diagram of the diver.
  • the terms “first” and “second” refer to different elements.
  • the singular forms “a” and “an” are intended to include the plural forms as well, unless the context clearly indicates otherwise.
  • the term “based on” is to be read as “based at least in part on. ”
  • the term “one embodiment” and “an embodiment” are to be read as “at least one embodiment. ”
  • the term “another embodiment” is to be read as “at least one other embodiment. ”
  • Other definitions, explicit and implicit, may be included below.
  • a power supply circuit is provided in a first embodiment.
  • Fig. 2 is a diagram of a power supply circuit in accordance with an embodiment of the present disclosure.
  • a power supply circuit 10 includes a transformer T1, a switch Q1, a sampling circuit 11 and a controller 12.
  • the power supply circuit 10 uses a flyback PFC topology.
  • the transformer T1 includes a primary winding P1 and a secondary winding S1.
  • the switch Q1 is in series connection with the primary winding P1 of the transformer T1 coupled between a first node A1 and a ground port.
  • the switch Q1 is MOS FET, a drain of the switch Q1 is connected to the primary winding P1.
  • the sampling circuit 11 is connected between the first node A1 and the ground port, generating a sampled voltage of the first node A1.
  • the sampled voltage is sine wave sampling of a voltage.
  • the controller 12 receives the sampled voltage from a first pin (1 COM) , and output a controlling signal from a second pin (6 DRAIN) to the switch Q1, so as to control on/off state of the switch Q1.
  • the second pin (6 DRAIN) of the controller 12 is connected to a gate of the switch Q1.
  • the controlling signal is generated according to the sampled voltage and a sensed current corresponding to a current flowing through the switch Q1.
  • the first pin (1 COM) is a RC loop compensation pin.
  • a voltage V1 corresponding to the sensed current received by a third pin (5 CS) of the controller 12 may be compared with the sampled voltage received by the first pin (1 COM) , and the controlling signal can be generated according to the difference between the voltage V1 and the sampled voltage.
  • the difference between the voltage V1 and the sampled voltage is a negative value or zero (i.e. the voltage V1 is equal to or lower than the sampled voltage)
  • the difference may be amplified by an error amplifier (not shown in FIG. 2) in the controller 12 so as to generate the controlling signal to control the switch Q1 to be turned on.
  • the difference between the voltage V1 and the sampled voltage is a positive value (i.e. the voltage V1 is higher than the sampled voltage)
  • the difference may be amplified by an error amplifier (not shown in FIG. 2) in the controller 12 so as to generate the controlling signal to control the switch Q1 to be turned off.
  • the sensed current can follow the phase of mains line.
  • the controller controls the switch of a flyback PFC according to a sampled mains sine wave form, thus harmonic character of the power supply circuit 10 is improved with low cost.
  • the sampling circuit 11 may work as a phase shift circuit, for example, phase of a voltage at a node A3 may be shifted relative to phase of the input voltage at node A1.
  • This phase shift leads to a delayed sensing of the input voltage (which has a frequency of 100 Hz due to the rectification of the 50 Hz mains as an example) , thus the harmonic behavior of the power supply circuit 10 will be improved.
  • the sampling circuit 11 includes: a first resistor R3, a second resistor R4, a third resistor R6 and a first capacitor C4.
  • the first resistor R3, the second resistor R4 and the first capacitor C4 is in serial connection between the first node A1 and the ground port.
  • the third resistor R6 is coupled between a second node A2 and the first pin 1 COM of the controller 12.
  • the second node A2 connects the second resistor R4 and the first capacitor C4.
  • the second resistor R4 is optional.
  • First resistor R3 may be sufficient if it could withstand high voltage.
  • 2 resistors (R3, R4) in series are used to enable higher security but this is not mandatory.
  • the power supply circuit 10 further includes: a second capacitor C2.
  • the second capacitor C2 is connected between the third resistor R6 and the first pin 1 COM. Therefore, DC element in the sampled voltage will be filtered by the second capacitor C2, and be injected to the first pin 1 COM.
  • the power supply circuit 10 further includes: a third capacitor C1 and a fourth resistor R2.
  • the fourth resistor R2 and the third capacitor C1 are compensation components used for PID (proportional-integral-derivative) control of the controller 12.
  • Input sine waveform is sampled by R2, and coupled into the first pin 1 COM through the second capacitor C2.
  • the third capacitor C1 is connected between the first pin 1 COM and the ground port.
  • the fourth resistor R2 is connected between a third node A3 and the ground port, the third node A3 connects the third resistor R9 and the second capacitor C2.
  • the power supply circuit 10 further includes: a fifth resistor R5, a sixth resistor R6 and a fourth capacitor C6.
  • the fifth resistor R5 is connected between the third pin 5 CS of the controller 12 and a fourth node A4.
  • the sixth resistor R9 is connected between the ground port and the fourth node A4.
  • the fourth capacitor C6 is connected between the third pin 5 CS and the ground port. Where, the fourth node A4 connects the sixth resistor R6 and the switch Q1.
  • the sensed current corresponding to the current flowing through the switch Q1 can be obtained and input to the third pin 5 CS of the controller 12.
  • the power supply circuit 10 further includes: a diode D1, a seventh resistor R8 and a fifth capacitor C3.
  • An anode of the diode D1 is connected to the switch Q1, for example, the anode of the diode D1 is connected to a drain of the switch Q1.
  • the seventh resistor R8 is connected between a cathode of the diode D1 and the first node A1.
  • the fifth capacitor C3 is connected between the cathode of the diode D1 and the first node A1.
  • the power supply circuit 10 further includes a rectifier bridge BR1 and a capacitor C5.
  • the rectifier bridge BR1 and the capacitor C5 may rectify and filter the input AC voltage V1, and generate rectified and filtered voltage on the first node A1.
  • the power supply circuit 10 may further include an output circuit 13.
  • the output circuit 13 may be arranged on a secondary side of the transformer T1, so as to rectify and filter a voltage generated in the secondary winding S1, and output a DC voltage to drive an LED.
  • the sampled mains sine wave form is injected into the first pin 1 COM, thus make sensed current follow the phase of mains line.
  • a controlling method of a power supply circuit is provided in the first aspect of embodiments.
  • the same contents as those in the first aspect of embodiments are omitted.
  • Fig. 3 shows a flowchart of a controlling method of the power supply circuit 10.
  • the method 30 includes:
  • Block 31 the controller generates the controlling signal according to the sampled voltage and a sensed current corresponding to a current flow through the switch.
  • the controller controls the switch of a flyback PFC according to a sampled mains sine wave form, thus harmonic character of the power supply circuit 10 is improved with low cost.
  • a driver is provided in the third aspect of embodiments.
  • Fig. 4 is a diagram of the diver. As shown in Fig. 4, the driver 50 includes:
  • an EMI filter 51 which filters the Electromagnetic Interference
  • a PFC circuit 52 which converts the input AC power into DC power
  • a DC-DC convertor 53 which converts the DC voltage of the PFC circuit 52 into an output voltage, the output voltage is used to drive a lighting device, for example, the lighting device is LED; the DC-DC convertor 53 is selectable, for some application, the DC-DC convertor 53 can be omitted;
  • a controller 54 controls the PFC circuit 52 and the DC-DC convertor 53;
  • a control circuit 55 communicates with the controller 54.
  • the control circuit 54 communicate with a peripheral device via an interface.
  • the peripheral devices may be dimmers, sensors, controllers, security device, etc.
  • the interface maybe DALI (Digital Addressable Lighting Interface) .
  • the PFC circuit 52 and the controller 54 correspond to the power supply circuit 10 in Fig. 2.
  • the controller 54 corresponds to the controller 12 in Fig. 2.
  • the driver 50 may supply direct current (DC) power to the lighting device.
  • the driver 50 may be an LED driver, the lighting device may be an LED device.
  • An output power, output voltage or output current of the lighting device may be changed from a minimum to maximum value according to dimming signal, e.g. 1-10V, which is received via DALI (Digital Addressable Lighting Interface) , NFC (Near Field Communication) , Bluetooth etc..
  • dimming signal e.g. 1-10V
  • DALI Digital Addressable Lighting Interface
  • NFC Near Field Communication
  • Bluetooth Bluetooth
  • the DC-DC-converter supplying the lighting device will change its output parameters (current and/or voltage) depending on the dimming signal.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Dc-Dc Converters (AREA)

Abstract

L'invention concerne un circuit d'alimentation électrique, un circuit d'attaque et un procédé de commande. Le circuit d'alimentation électrique comprend : un transformateur (T1), comprenant un enroulement primaire (P1) et un enroulement secondaire (S1) ; un commutateur (Q1), configuré pour être en connexion en série avec l'enroulement primaire du transformateur couplé entre un premier nœud (A1) et un orifice de mise à la terre ; un circuit d'échantillonnage, configuré pour être connecté entre le premier nœud (A1) et l'orifice de mise à la terre, génère une tension échantillonnée du premier nœud (A1) ; et un dispositif de commande, configuré pour recevoir la tension échantillonnée provenant d'une première broche (1 COM), et délivrer en sortie un signal de commande à partir d'une seconde broche (6 DRAIN) au commutateur, de manière à commander l'état marche/arrêt du commutateur, le signal de commande est généré en fonction de la tension échantillonnée et d'un courant détecté correspondant à un courant circulant à travers le commutateur.
PCT/CN2021/111828 2021-08-10 2021-08-10 Circuit d'alimentation électrique, circuit d'attaque et procédé de commande WO2023015453A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
PCT/CN2021/111828 WO2023015453A1 (fr) 2021-08-10 2021-08-10 Circuit d'alimentation électrique, circuit d'attaque et procédé de commande
EP21953084.7A EP4364530A4 (fr) 2021-08-10 2021-08-10 Circuit d'alimentation électrique, circuit d'attaque et procédé de commande
CN202180102364.9A CN117999855A (zh) 2021-08-10 2021-08-10 电力供应电路、驱动器和控制方法

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CN2021/111828 WO2023015453A1 (fr) 2021-08-10 2021-08-10 Circuit d'alimentation électrique, circuit d'attaque et procédé de commande

Publications (1)

Publication Number Publication Date
WO2023015453A1 true WO2023015453A1 (fr) 2023-02-16

Family

ID=85200372

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2021/111828 WO2023015453A1 (fr) 2021-08-10 2021-08-10 Circuit d'alimentation électrique, circuit d'attaque et procédé de commande

Country Status (3)

Country Link
EP (1) EP4364530A4 (fr)
CN (1) CN117999855A (fr)
WO (1) WO2023015453A1 (fr)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102010000939A1 (de) * 2010-01-15 2011-07-21 Tridonic Ag Leuchtmittel-Betriebsgerät mit temperaturabhängiger Schutzschaltung
CN207283867U (zh) * 2017-08-11 2018-04-27 深圳市恒耀光电科技有限公司 一种超薄型原边反馈led驱动控制电路
CN209982342U (zh) * 2019-01-21 2020-01-21 深圳市吉奥科技有限公司 一种基于单端的反激式电源
CN211296288U (zh) * 2019-12-03 2020-08-18 深圳市瑞晶实业有限公司 一种直流充电控制电路

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9510403B2 (en) * 2013-10-01 2016-11-29 General Electric Company Two-stage LED driver with buck PFC and improved THD
DE202016107324U1 (de) * 2016-12-23 2018-03-26 Tridonic Gmbh & Co Kg Schaltungsanordnung zum Betreiben von Leuchtmitteln
US10103636B1 (en) * 2017-09-21 2018-10-16 Dialog Semiconductor Inc. Single-stage power converter with power factor correction

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102010000939A1 (de) * 2010-01-15 2011-07-21 Tridonic Ag Leuchtmittel-Betriebsgerät mit temperaturabhängiger Schutzschaltung
CN207283867U (zh) * 2017-08-11 2018-04-27 深圳市恒耀光电科技有限公司 一种超薄型原边反馈led驱动控制电路
CN209982342U (zh) * 2019-01-21 2020-01-21 深圳市吉奥科技有限公司 一种基于单端的反激式电源
CN211296288U (zh) * 2019-12-03 2020-08-18 深圳市瑞晶实业有限公司 一种直流充电控制电路

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of EP4364530A4 *

Also Published As

Publication number Publication date
CN117999855A (zh) 2024-05-07
EP4364530A1 (fr) 2024-05-08
EP4364530A4 (fr) 2024-09-18

Similar Documents

Publication Publication Date Title
US9907130B2 (en) High-efficiency LED driver and driving method
US9525336B2 (en) Harmonic control method and circuit for flyback switching power supply
TWI542134B (zh) System controller and method for adjusting the power conversion system
RU2479955C2 (ru) Устройство и способ освещения на основе сид с высоким коэффициентом мощности
US8569963B2 (en) Cascade boost and inverting buck converter with independent control
US8294377B2 (en) Power converter with compensation circuit for adjusting output current provided to a constant load
US9826584B2 (en) Power circuit and diming control method for LED lighting device
US20130207555A1 (en) Led driver system with dimmer detection
TW201308842A (zh) 降壓轉換器及其控制電路與控制方法
WO2014032429A1 (fr) Procédé et circuit de commande de courant constant ayant une correction de facteur de puissance
US20190149051A1 (en) A bifred converter and a method of driving an output load
TW201401923A (zh) 光源驅動電路及其電力轉換器控制器
US11602020B2 (en) Dimming signal generation circuit, dimming signal generation method and LED driver
TWI505746B (zh) 發光二極體光源的供電電路、電力轉換器及供電方法
CN114384964A (zh) 功率改善电路的控制电路及半导体集成电路装置
CN102611316B (zh) 一种反激变换器控制恒流输出电路
WO2023015453A1 (fr) Circuit d'alimentation électrique, circuit d'attaque et procédé de commande
KR20090132253A (ko) 단일단의 발광다이오드 드라이버
EP3961892A1 (fr) Convertisseur à del
JP7126625B2 (ja) 負荷を駆動するための変換器、ｌｅｄドライバ及びｌｅｄ照明装置
TWI831463B (zh) 具接收電路過電壓保護之無線電源發射器、控制器及方法
CN210518919U (zh) 基于动态余量控制的高功率因数led驱动电源
US20240055974A1 (en) Switching control circuit and power supply circuit
WO2023279377A1 (fr) Circuit d'alimentation électrique, circuit d'attaque et procédé de commande
JP2001178123A (ja) 直流安定化電源装置

Legal Events

Date Code Title Description
WWE Wipo information: entry into national phase

Ref document number: 2021953084

Country of ref document: EP

ENP Entry into the national phase

Ref document number: 2021953084

Country of ref document: EP

Effective date: 20240130

NENP Non-entry into the national phase

Ref country code: DE

WWE Wipo information: entry into national phase

Ref document number: 202180102364.9

Country of ref document: CN