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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 (JP)
CHIDA AKIHIRO (JP)
SHIOKAWA MASATAKA (JP)
Application Number:
IB2019/053018
Publication Date:
October 31, 2019
Filing Date:
April 12, 2019
Export Citation:
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Assignee:
SEMICONDUCTOR ENERGY LAB (JP)
International Classes:
G01R31/367; H01M10/48; H02J7/00
Domestic Patent References:
WO2018203170A12018-11-08
Foreign References:
JP2004333472A2004-11-25
JP2007240308A2007-09-20
JP2008232758A2008-10-02
JP2007518973A2007-07-12
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