Title:
OPEN CIRCUIT VOLTAGE ESTIMATING DEVICE AND METHOD
Document Type and Number:
WIPO Patent Application WO/2016/068652
Kind Code:
A2
Abstract:
The present invention discloses an open circuit voltage estimating device that may estimate an open circuit voltage even when a battery cell does not have a stop time. The open circuit voltage estimating device according to one embodiment of the present invention comprises: a current measuring unit measuring the charging/discharging current of a battery cell; a current accumulating unit accumulating, from an initial time, the current measured by the current measuring unit; a time calculating unit calculating a threshold time which is the time when a current accumulation value accumulated by the current accumulating unit is within a threshold range; a cell voltage measuring unit measuring the voltage of the battery cell; and an open circuit voltage estimating unit estimating the open circuit voltage of the battery cell by calculating the average value of the voltage measured by the cell voltage measuring unit during a calculating time from the initial time to the threshold time.
Inventors:
YOON SUNG-YUL (KR)
PARK JEONG-SEOK (KR)
OH GYONG-JIN (KR)
CHO YOUNG-BO (KR)
PARK JEONG-SEOK (KR)
OH GYONG-JIN (KR)
CHO YOUNG-BO (KR)
Application Number:
PCT/KR2015/011590
Publication Date:
May 06, 2016
Filing Date:
October 30, 2015
Export Citation:
Assignee:
LG CHEMICAL LTD (KR)
International Classes:
G01R31/36; H01M10/48
Other References:
See references of EP 3141919A4
Attorney, Agent or Firm:
PHIL & ONZI INT'L PATENT & LAW FIRM (KR)
특허법인 필앤온지 (KR)
특허법인 필앤온지 (KR)
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