(19)

(11)

EP 4 288 986 A1

(12)

(43) Date of publication: 13.12.2023 Bulletin 2023/50 (21) Application number: 21925015.6 (22) Date of filing: 03.02.2021

(51) International Patent Classification (IPC):  H01F 27/28(2006.01) H01F 17/00(2006.01) H01F 38/14(2006.01) H02J 50/12(2016.01) (52) Cooperative Patent Classification (CPC): H02J 50/12; H01F 38/14; H02J 50/005; H01F 27/346; H01F 27/2804; H01F 2027/2809; H01F 27/2823; H01F 27/2871 (86) International application number: PCT/SG2021/050055 (87) International publication number: WO 2022/169404 (11.08.2022 Gazette 2022/32)

(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: Xnergy Autonomous Power Technologies Pte. Ltd. Singapore 637144 (SG)	(72) Inventors: HU, Xiaolei Singapore 637144 (SG) NAWAWI, Arie Singapore 637144 (SG) (74) Representative: Viering, Jentschura & Partner mbB Patent- und Rechtsanwälte  Am Brauhaus 8 01099 Dresden 01099 Dresden (DE)