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(11)

EP 2 739 500 A1

(12)

(43) Date of publication: 11.06.2014 Bulletin 2014/24 (21) Application number: 11749379.1 (22) Date of filing: 05.08.2011

(51) International Patent Classification (IPC):  B60L 11/18(2006.01) H02J 7/00(2006.01) (86) International application number: PCT/EP2011/063564 (87) International publication number: WO 2013/020575 (14.02.2013 Gazette 2013/07)

(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 (71) Applicant: ABB Research Ltd. 8050 Zürich (CH)	(72) Inventors: ZELAYA DE LA PARRA, Hector S-72144 Vasteras (SE) BALGARD, Lennart S-73232 Arboga (SE) FAURE RAGANI, Paolo I-11020 Issime (AO) (IT) (74) Representative: Giavarini, Francesco et al Zanoli & Giavarini S.p.A. Via Melchiorre Gioia, 64 20125 Milano 20125 Milano (IT)