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(11)

EP 4 533 621 A1

(12)

(43) Date of publication: 09.04.2025 Bulletin 2025/15 (21) Application number: 23729185.1 (22) Date of filing: 12.05.2023

(51) International Patent Classification (IPC):  H02J 3/00(2006.01) H02J 3/28(2006.01) H02J 3/14(2006.01) (52) Cooperative Patent Classification (CPC): H02J 3/003; H02J 3/004; H02J 3/14; H02J 3/28; H02J 2203/10 (86) International application number: PCT/SE2023/050469 (87) International publication number: WO 2023/229504 (30.11.2023 Gazette 2023/48)

(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 (30) Priority: 24.05.2022 SE 2250614 (71) Applicant: SMARTERGY AB 421 60 Västra Frölunda (SE)	(72) Inventors: JARHÄLL, Niclas 421 60 Västra Frölunda (SE) MANNERHAGEN, Felix 449 50 Alafors (SE) (74) Representative: Lind Edlund Kenamets Intellectual Property AB  Kungsportsavenyn 25 411 36 Göteborg 411 36 Göteborg (SE)