Title:
SEALED SECONDARY BATTERY DETERIORATION DIAGNOSIS METHOD AND DETERIORATION DIAGNOSIS SYSTEM
Document Type and Number:
WIPO Patent Application WO/2016/006359
Kind Code:
A1
Abstract:
A sealed secondary battery deterioration diagnosis method comprising: a step for detecting deformation of the sealed secondary battery to determine a first curved line indicating the relationship between a discharge capacity from the fully charged state or a charge capacity to the fully charged state and the detected deformation amount of the sealed secondary battery; a step for determining a second curved line L2 indicating the relationship between said charge/discharge capacity and the slope of the first curved line; a step for calculating a charge/discharge capacity Qc between stage change points P1, P2 appearing as minimum values on the second curved line L2; and a step for calculating the maintenance rate of an active material on the basis of a ratio Qc/Qs of the charge/discharge capacity Qc with respect to a charge/discharge capacity Qs between stage change points Ps1, Ps2 in a predetermined reference state.
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Inventors:
FUKUDA TAKESHI (JP)
MINAKATA NOBUYUKI (JP)
MINAKATA NOBUYUKI (JP)
Application Number:
PCT/JP2015/065539
Publication Date:
January 14, 2016
Filing Date:
May 29, 2015
Export Citation:
Assignee:
TOYO TIRE & RUBBER CO (JP)
International Classes:
G01R31/36; H01M10/48
Domestic Patent References:
| WO2011007805A1 | 2011-01-20 |
Foreign References:
| JP2013196805A | 2013-09-30 |
Other References:
See also references of EP 3168632A4
Attorney, Agent or Firm:
UNIUS PATENT ATTORNEYS OFFICE (JP)
Patent business corporation ユニアス international patent firm (JP)
Patent business corporation ユニアス international patent firm (JP)
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