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(11)

EP 2 436 016 A1

(12)

(43) Date of publication: 04.04.2012 Bulletin 2012/14 (21) Application number: 10780039.3 (22) Date of filing: 17.05.2010

(51) International Patent Classification (IPC):  H01F 1/057(2006.01) H01F 1/08(2006.01) (86) International application number: PCT/CN2010/072854 (87) International publication number: WO 2010/135958 (02.12.2010 Gazette 2010/48)

(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 SE SI SK SM TR (30) Priority: 27.05.2009 CN 200910107649 (71) Applicant: BYD Company Limited Shenzhen 518118 (CN)	(72) Inventors: GONG, Qing Guangdong 518118 (CN) ZHANG, Zhiqiang Guangdong 518118 (CN) ZHANG, Surong Guangdong 518118 (CN) DU, Xin Guangdong 518118 (CN) CHENG, Xiaofeng Guangdong 518118 (CN) (74) Representative: Neigenfink, Jan Cornelius  Gulde, Hengelhaupt, Ziebig & Schneider Wallstraße 58/59 10179 Berlin 10179 Berlin (DE)