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Title:
ESTIMATION DEVICE, ESTIMATION METHOD, AND COMPUTER PROGRAM
Document Type and Number:
WIPO Patent Application WO/2021/066129
Kind Code:
A1
Abstract:
The present invention comprises: a derivation unit (31) for deriving a derivation history that is based on the current of a lead storage battery, the voltage, and the temperature of the lead storage battery; an estimation unit (31) for estimating the degree of degradation; and a specifying unit (31). The specifying unit (31) specifies one or more physical quantities on the basis of the derivation history and one or more relationships selected from the following: a first relationship between a first history and the amount of a positive electrode active material; a second relationship between a second history and the specific surface area of the positive electrode material; a third relationship between a third history and the bulk density of the positive electrode material; a fourth relationship between a fourth history and the cluster size of positive active material particles; a fifth relationship between a fifth history and the accumulation amount of lead sulfate of a negative electrode material; a sixth relationship between a sixth history and the specific surface area of the negative electrode material; a seventh relationship between a seventh history and the amount of corrosion of a positive electrode lattice; an eighth relationship between an eighth history and the resistivity of a positive electrode plate; and a ninth relationship between a ninth history and the resistivity of a negative electrode plate.

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Inventors:
MIZOGUCHI YASUNORI (JP)
HAMANO YASUYUKI (JP)
Application Number:
PCT/JP2020/037504
Publication Date:
April 08, 2021
Filing Date:
October 02, 2020
Export Citation:
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Assignee:
GS YUASA INT LTD (JP)
International Classes:
G01R31/367; H01M10/48; G01R31/374; G01R31/392; H02J7/00
Domestic Patent References:
WO2009118910A12009-10-01
WO2000044062A12000-07-27
Foreign References:
JP2019079629A2019-05-23
JP2004354050A2004-12-16
JP2006189436A2006-07-20
JP2013231441A2013-11-14
JPH0541062U1993-06-01
JP2015035299A2015-02-19
JP2014105995A2014-06-09
JP2004130909A2004-04-30
JP2009219172A2009-09-24
JP2018045898A2018-03-22
JP2005129251A2005-05-19
JP2016022907A2016-02-08
US5759716A1998-06-02
JP2016109639A2016-06-20
Other References:
See also references of EP 4044322A4
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