(19)
(11) EP 4 071 875 A8

(12) CORRECTED EUROPEAN PATENT APPLICATION
published in accordance with Art. 153(4) EPC

(15) Correction information:
Corrected version no 1 (W1 A1)

(48) Corrigendum issued on:
21.12.2022 Bulletin 2022/51

(43) Date of publication:
12.10.2022 Bulletin 2022/41

(21) Application number: 21868029.6

(22) Date of filing: 26.01.2021
(51) International Patent Classification (IPC): 
H01M 10/056(2010.01)
 H01M 10/0525(2010.01)
(52) Cooperative Patent Classification (CPC):
Y02E 60/10; Y02P 70/50
(86) International application number:
PCT/CN2021/073763
(87) International publication number:
WO 2022/057189 (24.03.2022 Gazette 2022/12)
(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: 15.09.2020 CN 202010966809

(71) Applicant: Jiangsu Contemporary Amperex Technology Limited
Liyang, Jiangsu 213300 (CN)

(72) Inventors:
  • HU, Bobing
    Changzhou, Jiangsu 213300 (CN)
  • LIU, Chengyong
    Changzhou, Jiangsu 213300 (CN)
  • GUO, Yongsheng
    Changzhou, Jiangsu 213300 (CN)
  • LI, Qian
    Changzhou, Jiangsu 213300 (CN)
  • FU, Jiawei
    Changzhou, Jiangsu 213300 (CN)
  • CHENG, Meng
    Changzhou, Jiangsu 213300 (CN)

(74) Representative: Holt, Lucy Rose et al
Maucher Jenkins Seventh Floor Offices Artillery House 11-19 Artillery Row
London SW1P 1RT
London SW1P 1RT (GB)

   


(54) SOLID-STATE BATTERY, BATTERY MODULE, BATTERY PACK, AND RELATED DEVICE THEREOF


(57) The present application provides a solid-state battery, a battery module, a battery pack, and a related device thereof. On a sulfide electrolyte layer and at least one polymer electrolyte layer provided on the surface of the sulfide electrolyte layer, a solid electrolyte satisfies the following conditions: the thickness of the sulfide electrolyte layer is greater than or equal to the thickness of the polymer electrolyte layer on one side and greater than or equal to 84.2-80.2w. According to the polymer electrolyte layer having the proper thickness in the present application, an interface infiltration effect between the current sulfide electrolyte layer and an electrode can be improved, the overall energy density of the battery cannot be seriously reduced, application defects of a sulfide electrolyte in the solid-state battery are overcome to a great extent, and the cycle performance and the safety performance of the solid-state battery are improved.