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:
Nov. 16, 2021
Filed:
Oct. 16, 2018
Lg Chem, Ltd., Seoul, KR;
Ji Yeon Kim, Daejeon, KR;
Yoon Jung Bae, Daejeon, KR;
LG Chem, Ltd., Seoul, KR;
Abstract
The present invention relates to a device and a method for diagnosing battery deterioration, the device comprising: a battery comprising at least one cell; a charging unit for charging the cell, and performing cut-off during a stabilization time in which the charged cell is stabilized; a sensing unit for measuring a current of the cell with respect to time; and a control unit for, by using the measured current, detecting an inflection point of the measured current, calculating a slope of the measured current in a first period after a time corresponding to the inflection point; and comparing the current slope of a reference cell, corresponding to the slope of the measured current, so as to diagnose whether the cell has deteriorated.