Title:
バッテリ状態を推定する方法、装置、プログラムおよび記録媒体
Document Type and Number:
Japanese Patent JP7449738
Kind Code:
B2
Abstract:
To provide a method of accurately estimating a full-charging amount or a correlation of an open circuit voltage and a charging rate for batteries having different characteristics, a device, a program, and a storage medium.SOLUTION: A method of estimating a battery state, includes: steps 202, 206, and 212 of measuring a voltage and a charging/discharging current of a battery in time series; steps 203 and 213 of calculating an open circuit voltage of the battery at two different time points on the basis of the measured voltage; a step 214 of calculating an open circuit voltage change amount ΔOCV between the two different time points on the basis of the open circuit voltage; a step 207 of calculating an electric amount change amount ΔQ at the two different time points on the basis of the measured charging/discharging current; and a step 216 of calculating proportions ΔOCV/ΔQ and ΔQ/ΔOCV of the open circuit voltage change amount and the electric amount change amount. A full-charging capacity of the battery is estimated on the basis of the proportion of the open circuit voltage change amount and the electric amount change amount and the existed correlation with the full-charging capacity of a plurality of batteries having different full-charging capacity.SELECTED DRAWING: Figure 1
Inventors:
Noriyasu Iwane
Shinji Yokoyama
Etsuzo Sato
Shinji Yokoyama
Etsuzo Sato
Application Number:
JP2020050590A
Publication Date:
March 14, 2024
Filing Date:
March 23, 2020
Export Citation:
Assignee:
THE FURUKAW ELECTRIC CO.,LTD.
Furukawa as Co., Ltd.
Furukawa as Co., Ltd.
International Classes:
H01M10/48; B60L1/00; B60L3/00; B60L50/60; B60L58/18; H02J7/00
Domestic Patent References:
| JP2015114105A | ||||
| JP2015121444A | ||||
| JP2019105589A |
Foreign References:
| WO2012105492A1 |
Attorney, Agent or Firm:
Einzel Felix-Reinhard
Junichi Maekawa
Ueshima class
Shuichi Sumiyoshi
Junichi Maekawa
Ueshima class
Shuichi Sumiyoshi