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(11)

EP 4 090 547 A1

(12)

(43) Date of publication: 23.11.2022 Bulletin 2022/47 (21) Application number: 20829701.0 (22) Date of filing: 28.12.2020

(51) International Patent Classification (IPC):  B60L 1/00(2006.01) B60L 58/13(2019.01) H02J 3/14(2006.01) H02J 7/00(2006.01) B60L 58/10(2019.01) B60L 58/14(2019.01) H02J 3/28(2006.01) (52) Cooperative Patent Classification (CPC): B60L 58/14; B60L 1/00; B60L 58/10; B60L 58/13; H02J 7/0047; H02J 7/0025; Y02T 10/70 (86) International application number: PCT/SE2020/051263 (87) International publication number: WO 2021/145811 (22.07.2021 Gazette 2021/29)

(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: 15.01.2020 SE 2050027 (71) Applicant: Epiroc Rock Drills Aktiebolag 701 91 Örebro (SE)	(72) Inventors: SÄRNBRINK, Johan 702 37 Örebro (SE) TÖRNQVIST, Joacim 703 67 Örebro (SE) (74) Representative: Epiroc Rock Drills AB  Patents 701 91 Örebro 701 91 Örebro (SE)