(19)
(11) EP 4 178 000 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:
28.06.2023 Bulletin 2023/26

(43) Date of publication:
10.05.2023 Bulletin 2023/19

(21) Application number: 21925093.3

(22) Date of filing: 17.09.2021
(51) International Patent Classification (IPC): 
H01M 10/05(2010.01)
H01M 10/056(2010.01)
H01M 10/0568(2010.01)
H01M 50/533(2021.01)
H01M 10/058(2010.01)
 H01M 50/534(2021.01)
H01M 10/0525(2010.01)
H01M 10/0567(2010.01)
H01M 10/42(2006.01)
H01M 10/0569(2010.01)
(52) Cooperative Patent Classification (CPC):
Y02E 60/10; H01M 10/0525; H01M 10/0568; H01M 10/0567; H01M 50/533; H01M 10/4235; H01M 10/058; H01M 10/0569
(86) International application number:
PCT/CN2021/119110
(87) International publication number:
WO 2023/039845 (23.03.2023 Gazette 2023/12)
(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

(71) Applicant: Contemporary Amperex Technology Co., Limited
Fujian 352100 (CN)

(72) Inventors:
  • CHEN, Peipei
    Ningde Fujian 352100 (CN)
  • PENG, Chang
    Ningde Fujian 352100 (CN)
  • ZOU, Hailin
    Ningde Fujian 352100 (CN)

(74) Representative: Ziebig Hengelhaupt Intellectual Property Attorneys Patentanwaltsanwaltskanzlei PartGmbB 
Leipziger Straße 49
10117 Berlin
10117 Berlin (DE)


(56) References cited: : 
   
       


    (54) QUICK-CHARGING LONG-LIFE SECONDARY BATTERY, BATTERY MODULE, BATTERY PACK, AND ELECTRICAL DEVICE


    (57) The present disclosure provides a fast charge long lifetime secondary battery, a battery module, a battery pack, and a power consumption device. Particularly, the present disclosure provides a secondary battery, comprising an electrode assembly and an electrolytic solution, the electrode assembly comprises a positive electrode plate, a negative electrode plate, and a separator, the positive electrode plate comprises a positive electrode tab, and the negative electrode plate comprises a negative electrode tab, wherein the positive electrode tab has the following temperature rise coefficient:

    where S1 is a total cross-sectional area of the positive electrode tab, in unit of mm2; C is capacity of the electrode assembly, in unit of A.h; the electrolytic solution contains a heat stable salt and an additive that inhibits decomposition of the lithium salt.