US 11,955,609 B2
Secondary battery activation method
Jung Hoon Lee, Daejeon (KR); Chul Haeng Lee, Daejeon (KR); Yoo Sun Kang, Daejeon (KR); Sol Ji Park, Daejeon (KR); and Jae Won Lee, Daejeon (KR)
Assigned to LG ENERGY SOLUTION, LTD., Seoul (KR)
Appl. No. 18/036,059
Filed by LG ENERGY SOLUTION, LTD., Seoul (KR)
PCT Filed Sep. 6, 2022, PCT No. PCT/KR2022/013324
§ 371(c)(1), (2) Date May 9, 2023,
PCT Pub. No. WO2023/038388, PCT Pub. Date Mar. 16, 2023.
Claims priority of application No. 10-2021-0121099 (KR), filed on Sep. 10, 2021.
Prior Publication US 2023/0395882 A1, Dec. 7, 2023
Int. Cl. H01M 10/44 (2006.01); H01M 10/42 (2006.01)
CPC H01M 10/44 (2013.01) [H01M 10/4235 (2013.01)] 10 Claims
OG exemplary drawing
 
1. A method of activating a secondary battery, comprising:
an operation of deriving a reduction reaction voltage according to an electrolyte additive;
a pre-charging operation of pre-charging the secondary battery into which an electrolyte containing the electrolyte additive is injected; and
a pre-aging operation of wetting an electrode assembly accommodated in the secondary battery with the injected electrolyte and aging the electrode assembly to provide a pre-aged secondary battery,
wherein a charging termination voltage in the pre-charging operation is less than the reduction reaction voltage.