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:
Dec. 12, 2023
Filed:
Apr. 09, 2021
Lg Chem, Ltd., Seoul, KR;
Rin Jang, Daejeon, KR;
Jeong Ae Ahn, Daejeon, KR;
Junghyun Song, Daejeon, KR;
Byoung Hyoun Kim, Daejeon, KR;
Abstract
A method for extracting electrolyte solution in lithium secondary battery includes (S) freezing a secondary battery by impregnating in liquid nitrogen and then cutting it without disassembling; (S) immersing the frozen cut secondary battery in an extraction solvent to extract an electrolyte solution contained in the battery; and (S) calculating the total amount of the electrolyte solution with respect to the total size of the battery from the content of the extracted electrolyte solution, and then determining a ratio of total amount of the electrolyte solution to the content of the electrolyte solution used in manufacturing the secondary battery to obtain extraction efficiency. A system for extracting an electrolyte solution in a secondary battery is also provided.