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(11)

EP 4 252 341 A1

(12)

(43) Date of publication: 04.10.2023 Bulletin 2023/40 (21) Application number: 21918513.9 (22) Date of filing: 15.01.2021

(51) International Patent Classification (IPC):  H02M 7/12(2006.01) (52) Cooperative Patent Classification (CPC): H02M 1/007; H02M 1/4258; H02M 7/155; Y02B 70/10 (86) International application number: PCT/CN2021/071997 (87) International publication number: WO 2022/151305 (21.07.2022 Gazette 2022/29)

(84) Designated Contracting States: 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 Designated Extension States: BA ME Designated Validation States: KH MA MD TN (71) Applicant: Tridonic GmbH & Co KG 6851 Dornbirn (AT)	(72) Inventors: YANG, Jiaqi Shenzhen, Guangdong 518131 (CN) ZHANG, Xiongwu Shenzhen, Guangdong 518131 (CN) ZHOU, Li Shenzhen, Guangdong 518131 (CN) MAO, Qiuxiang Shenzhen, Guangdong 518131 (CN) (74) Representative: Rupp, Christian et al Mitscherlich PartmbB Patent- und Rechtsanwälte Karlstraße 7 80333 München 80333 München (DE)