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:
Feb. 18, 2020
Filed:
Dec. 14, 2017
Lg Chem, Ltd., Seoul, KR;
LG Chem, Ltd., Seoul, KR;
Abstract
A method for predicting a lifespan of a secondary battery within a short time in a more accurate and effective way is provided. The method for assessing a lifespan of a secondary battery includes primarily aging a prepared secondary battery for a predetermined time, initially charging the primarily aged secondary battery to a predetermined SOC and secondarily aging the initially charged secondary battery for a duration greater than the primary aging. Additionally, degassing removes gas in the secondarily aged secondary battery. Further, the method includes charging the secondary battery with a primary low-current at C-rate of 1/15 C or less, after the degassing step, discharging the secondary battery with a primary low-current at C-rate of 1/15 C or less, after the primary low-current charging step and determining a lifespan of the secondary battery by using a difference of voltages measured at different time points.