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EP 4 771 203 A1

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(43) Date of publication: 08.07.2026 Bulletin 2026/28 (21) Application number: 24761970.3 (22) Date of filing: 28.08.2024

(51) International Patent Classification (IPC):  C23C 8/24(2006.01) C25B 9/75(2021.01) H01M 8/0206(2016.01) H01M 8/0228(2016.01) H01M 8/0297(2016.01) C25B 1/04(2021.01) C25B 9/77(2021.01) H01M 8/0215(2016.01) H01M 8/0254(2016.01) H01M 8/10(2016.01) (52) Cooperative Patent Classification (CPC): C23C 8/24; H01M 8/0206; H01M 8/0215; H01M 8/0228; H01M 8/0297; H01M 8/0254; H01M 2008/1095; C25B 1/04; C25B 9/75; C25B 9/77; C25B 9/65; Y02E 60/50 (86) International application number: PCT/EP2024/074083 (87) International publication number: WO 2025/045947 (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: GE KH MA MD TN (30) Priority: 28.08.2023 EP 23193721 (71) Applicant: Sungrow Deutschland GmbH 81541 München (DE)	(72) Inventors: LIU, Fang 81541 München (DE) GARCIA TORREGROSA, Ivan 81541 München (DE) (74) Representative: V.O.  P.O. Box 87930 2508 DH Den Haag 2508 DH Den Haag (NL)