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(11)

EP 4 740 253 A1

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(43) Date of publication: 13.05.2026 Bulletin 2026/20 (21) Application number: 24742702.4 (22) Date of filing: 05.07.2024

(51) International Patent Classification (IPC):  H01M 8/0273(2016.01) H01M 8/04537(2016.01) H01M 8/242(2016.01) H01M 8/0276(2016.01) H01M 8/1004(2016.01) (52) Cooperative Patent Classification (CPC): H01M 8/0273; H01M 8/0276; H01M 8/04552; H01M 8/1004; H01M 8/242; Y02E 60/50 (86) International application number: PCT/SE2024/050671 (87) International publication number: WO 2025/010019 (09.01.2025 Gazette 2025/02)

(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: 05.07.2023 SE 2350842 (71) Applicant: PowerCell Sweden AB 41834 Gothenburg (SE)	(72) Inventor: MUNTHE, Stefan 426 68 Västra Frolunda (SE) (74) Representative: Seifert, Ruth  Patentquadrat Patentanwaltsgesellschaft mbH Pettenkoferstraße 27a 80336 München 80336 München (DE)