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(11)

EP 2 790 853 A1

(12)

(43) Date of publication: 22.10.2014 Bulletin 2014/43 (21) Application number: 12858511.4 (22) Date of filing: 13.12.2012

(51) International Patent Classification (IPC):  B22D 17/02(2006.01) (86) International application number: PCT/CN2012/086494 (87) International publication number: WO 2013/086990 (20.06.2013 Gazette 2013/25)

(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 MK MT NL NO PL PT RO RS SE SI SK SM TR (30) Priority: 15.12.2011 CN 201110421420 (71) Applicants: Shenzhen BYD Auto R&D Company Limited Shenzhen, Guangdong 518118 (CN) BYD Company Limited Shenzhen, Guangdong 518118 (CN)	(72) Inventor: ZHANG, Faliang Shenzhen Guangdong 518118 (CN) (74) Representative: Gulde & Partner  Patent- und Rechtsanwaltskanzlei mbB Wallstraße 58/59 10179 Berlin 10179 Berlin (DE)