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:
Oct. 06, 2020
Filed:
Jan. 03, 2018
Lg Chem, Ltd., Seoul, KR;
LG CHEM, LTD., Seoul, KR;
Abstract
Disclosed is a technique for effectively detecting a low voltage defect that may occur at a secondary battery. A method for detecting a low voltage defect of a secondary battery includes an assembling step of assembling a secondary battery by accommodating an electrode assembly, in which a positive electrode plate and a negative electrode plate are stacked with a separator being interposed therebetween, and an electrolytic solution in a battery case; a primary aging step of aging the assembled secondary battery at a temperature of 20° C. to 40° C.; a primary formation step of charging the aged secondary battery at a C-rate of 0.1 C to 0.5 C; a high-rate charging step of charging the secondary battery at a C-rate of 2 C or above, after the primary formation step; and a detecting step of detecting a defect of the secondary battery, after the high-rate charging step.