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1. (WO2018025350) ESTIMATION DEVICE, ESTIMATION PROGRAM, AND CHARGING CONTROL DEVICE

Pub. No.:    WO/2018/025350    International Application No.:    PCT/JP2016/072802
Publication Date: Fri Feb 09 00:59:59 CET 2018 International Filing Date: Thu Aug 04 01:59:59 CEST 2016
IPC: G01R 31/36
Applicants: FUJITSU LIMITED
富士通株式会社
Inventors: IKEDA, Kazuto
池田和人
Title: ESTIMATION DEVICE, ESTIMATION PROGRAM, AND CHARGING CONTROL DEVICE
Abstract:
The estimation device according to the present invention is characterized by being provided with a storage unit for storing a plurality of model functions of the charging rate and the open-circuit voltage of a chargeable cell, a determination unit for determining a model function from the plurality of model functions in accordance with an electric current status of the cell, a calculation unit for estimating the charging rate and a predicted terminal voltage of the cell through use of a Kalman filter using the model function determined by the determination unit and calculating the difference between the predicted terminal voltage and an actual measured terminal voltage of the cell, and a correction unit for correcting the charging rate on the basis of the calculated difference and the Kalman gain of the Kalman filter.