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EP 4 771 728 A1

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(43) Date of publication: 08.07.2026 Bulletin 2026/28 (21) Application number: 23762512.4 (22) Date of filing: 30.08.2023

(51) International Patent Classification (IPC):  H02J 7/00(2026.01) B60L 53/67(2019.01) B60L 53/31(2019.01) H02J 7/02(2016.01) (52) Cooperative Patent Classification (CPC): H02J 7/02; H02J 2207/20; B60L 53/67; B60L 53/31; B60L 53/11; B60L 53/14; B60L 53/22; H02J 7/50; H02J 7/933 (86) International application number: PCT/EP2023/073852 (87) International publication number: WO 2025/045364 (06.03.2025 Gazette 2025/10)

(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 ME MK MT NL NO PL PT RO RS SE SI SK SM TR Designated Extension States: BA Designated Validation States: KH MA MD TN (71) Applicant: Hitachi Energy Ltd 8050 Zürich (CH)	(72) Inventors: GRADINGER, Thomas 5032 Rohr, Aarau (CH) GOHIL, Ghanshyamsinh Apex 27502, NC (US) BURKART, Ralph 8037 Zürich (CH) (74) Representative: Epping - Hermann - Fischer  Patentanwaltsgesellschaft mbH Schloßschmidstraße 5 80639 München 80639 München (DE)