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:
Jul. 10, 2018
Filed:
Oct. 30, 2015
Lg Chem, Ltd., Seoul, KR;
Sung-Yul Yoon, Daejeon, KR;
Jeong-Seok Park, Daejeon, KR;
Gyong-Jin Oh, Daejeon, KR;
Young-Bo Cho, Daejeon, KR;
LG CHEM, LTD., Seoul, KR;
Abstract
The present disclosure relates to an open circuit voltage estimating apparatus capable of estimating an open circuit voltage even when a battery cell does not have a rest time. The open circuit voltage estimating apparatus according to an embodiment of the present disclosure includes a current measuring unit configured to measure a charge/discharge current of a battery cell; a current integrating unit configured to integrate the current measured by the current measuring unit starting from an initial time; a time calculating unit configured to calculate a critical time, that is a time in which the integrated current value integrated by the current integrating unit is within a critical range; a cell voltage measuring unit configured to measure a voltage of the battery cell; and an open circuit voltage estimating unit configured to estimate an open circuit voltage of the battery cell by calculating an average value of the voltage measured by the cell voltage measuring unit during an operation time starting from the initial time to the critical time.