(19)

(11)

EP 4 058 348 A2

(12)

(88) Date of publication A3: 08.07.2021 (43) Date of publication: 21.09.2022 Bulletin 2022/38 (21) Application number: 20864300.7 (22) Date of filing: 01.10.2020

(51) International Patent Classification (IPC):  B64C 3/18(2006.01) B64D 31/06(2006.01) B64C 25/34(2006.01) B64D 37/30(2006.01) (52) Cooperative Patent Classification (CPC): B64D 2027/026; B64D 27/12; B64C 25/405; B64C 25/34; B64D 37/30; B64D 31/06; B64D 2221/00; B64D 27/24; B64D 41/00; B64D 33/08; B64D 29/00; B64D 13/006; B64C 25/04; B64D 2013/0648; B64D 41/007; B64D 35/02; F02C 7/04; B64C 11/14; F01D 15/10; F05D 2220/76; B60L 1/02; B60L 2200/10; B60L 2240/36; B60L 1/20; B60L 58/15; H01M 10/65; B64C 1/12; B64D 15/04; Y02T 10/62; Y02T 10/70; Y02T 50/50; Y02T 50/40; Y02T 50/60; Y02T 50/80; Y02E 60/10; B60L 50/60; B64C 25/42; H01M 10/613; H01M 10/615; H01M 2220/20; H01M 10/62; H01M 10/6561; H01M 10/66; Y02T 10/72 (86) International application number: PCT/GB2020/052393 (87) International publication number: WO 2021/064394 (08.04.2021 Gazette 2021/14)

(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: 02.10.2019 GB 201914227 02.10.2019 GB 201914219 02.10.2019 GB 201914225 02.10.2019 GB 201914224 02.10.2019 GB 201914223 02.10.2019 GB 201914220 06.11.2019 GB 201916137 06.11.2019 GB 201916139 06.11.2019 GB 201916138 06.11.2019 GB 201916136 22.11.2019 GB 201917074 11.03.2020 GB 202003500 11.03.2020 GB 202003503 11.03.2020 GB 202003504 11.03.2020 GB 202003513 11.03.2020 GB 202003496 11.03.2020 GB 202003497 11.03.2020 GB 202003505 11.03.2020 GB 202003511 11.03.2020 GB 202003498 11.03.2020 GB 202003501 11.03.2020 GB 202003502 11.03.2020 GB 202003509 11.03.2020 GB 202003512 (71) Applicant: Electric Aviation Group Ltd Bristol BS1 6NL (GB)

(72) Inventors: WOOD, Norman Bristol BS1 6NL (GB) IQBAL, Kamran Bristol BS1 6NL (GB) (74) Representative: Barker Brettell LLP  100 Hagley Road Edgbaston Birmingham B16 8QQ Birmingham B16 8QQ (GB)