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1. (WO2017022037) STORAGE BATTERY EVALUATING DEVICE, POWER STORAGE SYSTEM AND STORAGE BATTERY EVALUATING METHOD

Pub. No.:    WO/2017/022037    International Application No.:    PCT/JP2015/071873
Publication Date: Fri Feb 10 00:59:59 CET 2017 International Filing Date: Sat Aug 01 01:59:59 CEST 2015
IPC: G01R 31/36
H01M 10/48
Applicants: KABUSHIKI KAISHA TOSHIBA
株式会社 東芝
Inventors: YAMAMOTO Takahiro
山本 幸洋
KOSUGI Shinichiro
小杉 伸一郎
TAKEUCHI Ryosuke
竹内 亮介
SAKUMA Masatake
佐久間 正剛
WADA Takahisa
和田 卓久
EZAWA Toru
江澤 徹
KOBAYASHI Takenori
小林 武則
Title: STORAGE BATTERY EVALUATING DEVICE, POWER STORAGE SYSTEM AND STORAGE BATTERY EVALUATING METHOD
Abstract:
[Problem] To evaluate the degradation of a power storage system without stopping the functions of the power storage system. [Solution] A storage battery evaluating device according to an embodiment of the present invention is provided with a data generating unit and a degradation evaluating unit. On the basis of a current value and a voltage value which are measured from a power storage device in which charging and discharging are controlled according to charging and discharging command values, the data generating unit generates a plurality of pieces of correspondence data between the charge amount and the voltage value of the power storage device. The degradation evaluating unit evaluates the degradation state of the power storage device on the basis of the distribution of the voltage value of the correspondence data belonging to a first charge amount range, when the distribution of first charging and discharging command values, which are the charging and discharging command values by which the correspondence data belonging to the first charge amount range are obtained by means of the charging and discharging control, satisfies a predetermined condition.