(19)

(11)

EP 4 532 814 A1

(12)

(43) Date of publication: 09.04.2025 Bulletin 2025/15 (21) Application number: 22943058.2 (22) Date of filing: 24.05.2022

(51) International Patent Classification (IPC):  D05B 47/04(2006.01) (52) Cooperative Patent Classification (CPC): D05B 1/20; D05B 1/02 (86) International application number: PCT/CN2022/094723 (87) International publication number: WO 2023/225852 (30.11.2023 Gazette 2023/48)

(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 RS SE SI SK SM TR Designated Extension States: BA ME Designated Validation States: KH MA MD TN (71) Applicant: ABB SCHWEIZ AG 5400 Baden (CH)	(72) Inventors: YANG, Jibo Shanghai 200050 (CN) DONG, Yiming Shanghai 201101 (CN) LU, Qi Shanghai 200125 (CN) (74) Representative: Zimmermann & Partner Patentanwälte mbB  Postfach 330 920 80069 München 80069 München (DE)