(19)

(11)

EP 3 820 761 A1

(12)

(43) Date of publication: 19.05.2021 Bulletin 2021/20 (21) Application number: 19734530.9 (22) Date of filing: 18.06.2019

(51) International Patent Classification (IPC):  B61L 25/02(2006.01) H02J 3/32(2006.01) B60M 3/02(2006.01) (86) International application number: PCT/SE2019/050582 (87) International publication number: WO 2020/013744 (16.01.2020 Gazette 2020/03)

(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 (30) Priority: 09.07.2018 SE 1850865 (71) Applicant: Vattenfall AB 169 92 Stockholm (SE)	(72) Inventor: PERSSON, Jonas 169 73 Solna (SE) (74) Representative: Zacco Sweden AB  P.O. Box 5581 114 85 Stockholm 114 85 Stockholm (SE)