(19)

(11)

EP 3 639 316 A1

(12)

(43) Date of publication: 22.04.2020 Bulletin 2020/17 (21) Application number: 18817955.0 (22) Date of filing: 06.06.2018

(51) International Patent Classification (IPC):  H01M 10/04(2006.01) H01M 2/34(2006.01) H01M 2/26(2006.01) H01M 2/02(2006.01) (86) International application number: PCT/US2018/036294 (87) International publication number: WO 2018/231605 (20.12.2018 Gazette 2018/51)

(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: 15.06.2017 US 201762520478 P (71) Applicant: A123 Systems LLC Waltham, MA 02451 (US)	(72) Inventors: BATSON, David C. Winchester, Massachusetts 01890 (US) QUINN, Alex Brighton, Massachusetts 02135 (US) RYBALNIK, Aleksey Framingham, Massachusetts 01701 (US) MCLAUGHLIN, John Norwood, Massachusetts 02062 (US) (74) Representative: Grey, Ian Michael  Venner Shipley LLP 200 Aldersgate London EC1A 4HD London EC1A 4HD (GB)