The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 21, 2026
Filed:
Dec. 21, 2023
Lg Energy Solution, Ltd., Seoul, KR;
Kiwon Sung, Daejeon, KR;
Yojin Kim, Daejeon, KR;
Jinseo Park, Daejeon, KR;
Hyeyeon Kang, Daejeon, KR;
Bohyun Kang, Daejeon, KR;
Daeun Jang, Daejeon, KR;
Youngseong Jo, Daejeon, KR;
LG Energy Solution, Ltd., Seoul, KR;
Abstract
A method for manufacturing a lithium secondary battery includes preparing a battery cell, charging and discharging the battery cell under pressurization to activate the battery, and then charging is performed in a constant voltage mode. The battery cell includes a positive electrode, a negative electrode and an electrolyte, with the positive electrode containing lithium-rich manganese-based oxide in which the content of manganese in all metals excluding lithium is greater than 50 mol %, and the ratio of the number of moles of lithium to the number of moles of all metals excluding lithium (Li/Me) is greater than 1. The charging and discharging the battery cell under pressurization activates the battery. In the activating, the charging is performed in constant current mode until the charge cut-off voltage, and then the charging is performed in a constant voltage mode, and the charge cut-off voltage is greater than 4.35V.