Title:
ESTIMATION DEVICE, POWER STORAGE DEVICE, AND ESTIMATION METHOD
Document Type and Number:
WIPO Patent Application WO/2022/249943
Kind Code:
A1
Abstract:
This estimation device for estimating the quantity of electricity remaining in a storage cell or battery pack executes: first processing for estimating the quantity of electricity remaining, on the basis of an integrated value of the current of a storage cell or a battery pack; second processing for estimating a cumulative error in the quantity of electricity remaining, on the basis of an integrated value of the measurement error for the current; third processing for estimating the quantity of electricity remaining by a different method than with the first processing; fourth processing for calculating a remaining electricity quantity difference, which is the difference between the quantity of electricity remaining estimated in the first processing and the quantity of electricity remaining estimated in the third processing; and fifth processing for calculating a correction value for the measurement error, on the basis of the cumulative error and the remaining electricity quantity difference.
Inventors:
IMANAKA YUKI (JP)
Application Number:
PCT/JP2022/020636
Publication Date:
December 01, 2022
Filing Date:
May 18, 2022
Export Citation:
Assignee:
GS YUASA INT LTD (JP)
International Classes:
H02J7/00; G01R31/3828; G01R31/387; H01M10/48
Domestic Patent References:
| WO2018181489A1 | 2018-10-04 | |||
| WO2014083856A1 | 2014-06-05 | |||
| WO2016158396A1 | 2016-10-06 |
Foreign References:
| JP2005261130A | 2005-09-22 | |||
| JP2001078365A | 2001-03-23 | |||
| JP2013057537A | 2013-03-28 | |||
| JP2000150003A | 2000-05-30 | |||
| JP2006017682A | 2006-01-19 |
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