METHOD FOR MANUFACTURING LITHIUM SECONDARY BATTERY

Title:

METHOD FOR MANUFACTURING LITHIUM SECONDARY BATTERY

Document Type and Number:

WIPO Patent Application WO/2024/136557

Kind Code:

A1

Abstract:

The present invention relates to a method for manufacturing a lithium secondary battery. The method for manufacturing a lithium secondary battery according to the present invention comprises: a first step of preparing a battery case; a second step of assembling a battery cell by arranging an electrode assembly in the battery case and then injecting an electrolyte thereinto so that an electrolyte mass per unit volume reaches a (g/Ah); a third step of activating the battery cell; and a fourth step of performing pre-charge and discharge b times on the activated battery cell, wherein expression (1) is satisfied. Expression (1): 15 ≤ 486.77 - 373.09 × e(-0.006b) × a0.29 ≤ 30, wherein in expression (1), a is 2.0 to 3.0, and b is an integer of 0 to 3.

Inventors:

JUNG, Jae Min (188 Munji-ro,Yuseong-gu, Daejeon, KR)
KIM, Chang Ho (188 Munji-ro,Yuseong-gu, Daejeon, KR)
KIM, Hyun Jin (188 Munji-ro,Yuseong-gu, Daejeon, KR)
KIM, Seon Uk (188 Munji-ro,Yuseong-gu, Daejeon, KR)
KIM, Jae Min (188 Munji-ro,Yuseong-gu, Daejeon, KR)

Application Number:

PCT/KR2023/021348

Publication Date:

June 27, 2024

Filing Date:

December 21, 2023

Export Citation:

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Assignee:

LG ENERGY SOLUTION, LTD. (108 Yeoui-daero,Yeongdeungpo-gu, Seoul, KR)

International Classes:

H01M10/44; H01M50/105

Attorney, Agent or Firm:

BAE, KIM & LEE IP (30 Cheonggyecheon-roJung-gu, Seoul, KR)

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