Title:
ABORMALITY DETECTION DEVICE FOR SECONDARY BATTERY, ABNORMALITY DETECTION METHOD, AND PROGRAM
Document Type and Number:
WIPO Patent Application WO/2019/138286
Kind Code:
A1
Abstract:
Provided is a secondary battery control system for detecting abnormalities while predicting, with high precision, other parameters (e.g., internal resistance and SOC). A Kalman filter is used, and an observed value (voltage) and a pre-state variable are used at certain times to detect differences in estimated voltages. A threshold value voltage is set in advance, and sudden abnormalities, specifically, micro-shorts and the like are detected according to detected differential voltages. In addition, it is preferable to use a neural network to learn time-series differential voltage data to determine and detect whether voltage differentials are normal or abnormal.
Inventors:
TAKAHASHI KEI (JP)
TOYOTAKA KOUHEI (JP)
TOYOTAKA KOUHEI (JP)
Application Number:
PCT/IB2018/060597
Publication Date:
July 18, 2019
Filing Date:
December 25, 2018
Export Citation:
Assignee:
SEMICONDUCTOR ENERGY LAB (JP)
International Classes:
G01R19/00; G01R31/36; H01M10/48; H02J7/00
Domestic Patent References:
| WO2012098770A1 | 2012-07-26 |
Foreign References:
| JP2015184219A | 2015-10-22 |
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