Title:
REMAINING-BATTERY-CAPACITY ESTIMATION METHOD
Document Type and Number:
WIPO Patent Application WO/2023/176297
Kind Code:
A1
Abstract:
Provided is a remaining-battery-capacity estimation method whereby measurement of battery discharge is exploited to allow the true value to be estimated in a short time. In this remaining-battery-capacity estimation method for estimating the remaining capacity of a battery that is rechargeable and thus can be used repeatedly, an explained variable for estimating remaining capacity of a battery is defined; a plurality of explanatory variables that are of high importance as elements used for the estimation of remaining capacity and that have linearity are extracted; a relational formula that represents the relationship between the explained variable and the explanatory variables is derived as a regression formula; the regression formula is utilized to carry out a timewise lapse estimate for at least one of the battery discharge voltage and the battery discharge current, to estimate the remaining battery capacity.
Inventors:
UCHIDA HIROKAZU (JP)
Application Number:
PCT/JP2023/005571
Publication Date:
September 21, 2023
Filing Date:
February 16, 2023
Export Citation:
Assignee:
TOYOTA MOTOR KYUSHU INC (JP)
International Classes:
G01R31/367; G01R31/382; G01R31/385; H01M10/48; H02J7/00
Foreign References:
| JP2022015085A | 2022-01-21 | |||
| JPH09329654A | 1997-12-22 | |||
| JPH0855642A | 1996-02-27 | |||
| US20190353711A1 | 2019-11-21 | |||
| CN112255559A | 2021-01-22 | |||
| JP7090949B1 | 2022-06-27 |
Attorney, Agent or Firm:
MATSUO Kenichiro (JP)
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