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(11)

EP 4 799 205 A1

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(43) Date of publication: 02.09.2026 Bulletin 2026/36 (21) Application number: 25849343.6 (22) Date of filing: 12.12.2025

(51) International Patent Classification (IPC):  H01M(2006.01) (52) Cooperative Patent Classification (CPC): H01M 10/0585; H01M 10/0569; H01M 10/0568; H01M 10/052; H01M 10/0562; H01M 10/0566; H01M 50/46; H01M 50/186; H01M 50/193; Y02E 60/10 (86) International application number: PCT/US2025/059396 (87) International publication number: WO 2026/128810 (18.06.2026 Gazette 2026/25)

(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 LA MA MD TN (30) Priority: 13.12.2024 US 202463733594 P (71) Applicant: QuantumScape Battery, Inc. San Jose, CA 95110 (US)

(72) Inventors: FAN, Jing San Jose, CA 95110 (US) GENOVESE, Matthew San Jose, CA 95110 (US) LIN, Justin San Jose, CA 95110 (US) MA, Siyuan San Jose, CA 95110 (US) MADRIGAL-MOELLER, Zackery San Jose, CA 95110 (US) MEHROTRA, Amal San Jose, CA 95110 (US) RICHARDSON, Caleb San Jose, CA 95110 (US) SASTRE, Jordi San Jose, CA 95110 (US) SCHOLL, Jonathan San Jose, CA 95110 (US) SINGH, Mohit San Jose, CA 95110 (US) (74) Representative: Carpmaels & Ransford LLP  One Southampton Row London WC1B 5HA London WC1B 5HA (GB)