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Title:
ACCUMULATOR STATE-OF-CHARGE ESTIMATION METHOD AND ACCUMULATOR STATE-OF-CHARGE ESTIMATION SYSTEM
Document Type and Number:
WIPO Patent Application WO/2019/207399
Kind Code:
A1
Abstract:
Provided is a secondary cell capacity measurement system for highly accurately estimating SOC in a short time and at a low cost. An accumulator state-of-charge estimation system according to this invention comprises: a means for acquiring time-series data for measured voltage values and measured current values for a first accumulator; a means for normalizing the time-series data for the measured voltage values; a means for normalizing the time-series data for the measured current values; a database creation unit for creating a database in which data resulting from superimposing time-series data having a vertical time axis and time-series data having a horizontal time axis is associated with the SOC of the first accumulator; and a neural network unit for configuring a neural network using a database created beforehand as learning data, receiving data for a second accumulator resulting from superimposing time-series data having a vertical time axis and time-series data having a horizontal time axis, and outputting an estimated value for the SOC of the second accumulator.

Inventors:
TAJIMA, Ryota (398, Hase, Atsugi-sh, Kanagawa 36, 〒2430036, JP)
CHIDA, Akihiro (398, Hase, Atsugi-sh, Kanagawa 36, 〒2430036, JP)
SHIOKAWA, Masataka (398, Hase, Atsugi-sh, Kanagawa 36, 〒2430036, JP)
Application Number:
IB2019/053018
Publication Date:
October 31, 2019
Filing Date:
April 12, 2019
Export Citation:
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Assignee:
SEMICONDUCTOR ENERGY LABORATORY CO., LTD. (398 Hase, Atsugi-shi Kanagawa, 36, 〒2430036, JP)
International Classes:
G01R31/367; H01M10/48; H02J7/00
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