Title:
二次電池状態検出装置および二次電池状態検出方法
Document Type and Number:
Japanese Patent JP6499075
Kind Code:
B2
Abstract:
[Solution] A secondary battery state detecting device includes: a current detecting unit (a current sensor (12)) that detects a value of a current flowing in a secondary battery (14); a calculating unit (an equivalent circuit component calculation module (114)) that calculates an equivalent circuit component that constitutes an equivalent circuit of the secondary battery; an estimating unit (a voltage drop value calculation module (116)) that estimates a value of a voltage drop caused by a value of a dark current on the basis of the value of the dark current and the equivalent circuit component, the value of the dark current corresponding to a value of a current detected by the current detecting unit and the dark current flowing in the secondary battery after the vehicle has stopped, and the equivalent circuit component corresponding to the equivalent circuit component calculated by the calculating unit and having an element value varying nonlinearly in accordance with the value of the dark current; and a state detecting unit (an open circuit voltage calculation module (118)) that detects a state of the secondary battery on the basis of the value of the voltage drop estimated by the estimating unit.
Inventors:
Naoya Takashima
Noriyasu Iwane
Koichi Yokoyama
Noriyasu Iwane
Koichi Yokoyama
Application Number:
JP2015527245A
Publication Date:
April 10, 2019
Filing Date:
July 01, 2014
Export Citation:
Assignee:
THE FURUKAW ELECTRIC CO.,LTD.
Furukawa as Co., Ltd.
Furukawa as Co., Ltd.
International Classes:
G01R31/36; H01M10/48; H02J7/00
Domestic Patent References:
| JP2010025563A | ||||
| JP2007187534A |
Foreign References:
| WO2012046265A1 | ||||
| WO2009118910A1 | ||||
| WO2011155017A1 |
Attorney, Agent or Firm:
Yoshihiko Emura