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EP 4 559 082 A1

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(43) Date of publication: 28.05.2025 Bulletin 2025/22 (21) Application number: 22754845.0 (22) Date of filing: 20.07.2022

(51) International Patent Classification (IPC):  H02M 7/5387(2007.01) H02J 3/24(2006.01) H02J 3/40(2006.01) (52) Cooperative Patent Classification (CPC): H02M 7/53875; H02J 2300/20; H02J 3/381; H02J 3/32 (86) International application number: PCT/EP2022/070383 (87) International publication number: WO 2024/017472 (25.01.2024 Gazette 2024/04)

(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: Huawei Digital Power Technologies Co., Ltd. Shenzhen, Guangdong 518043 (CN)	(72) Inventor: FREIJEDO FERNÁNDEZ, Francisco Daniel 80992 Munich (DE) (74) Representative: Isarpatent  Patent- und Rechtsanwälte Barth Hassa Peckmann & Partner mbB Friedrichstraße 31 80801 München 80801 München (DE)