Title:
二次電池の状態判定方法
Document Type and Number:
Japanese Patent JP7174327
Kind Code:
B2
Abstract:
To provide a secondary-battery state determination method enabling the determination of abnormality in a secondary battery more accurately, with the influence of secular deterioration considered.SOLUTION: A secondary-battery state determination method includes a first determination step, a reference correspondence information obtainment step, and a second determination step. The first determination step (S3) is to determine whether a target battery is good or bad on the basis of at least either of a capacity and internal resistance of the target battery. The reference correspondence information obtainment step (S6) is to obtain, as reference correspondence information, the information representing relationship between SOC and battery voltage of a normal second battery whose secular deterioration state is consistent with a secular deterioration state of the target battery, in a case where the state of the target battery is good in the first determination step. The second determination step (S8) is to determine whether the target battery is abnormal by comparing the relationship between the SOC and battery voltage of the target battery with the relationship represented by the reference correspondence information.SELECTED DRAWING: Figure 2
Inventors:
Akemi Nakatake
Application Number:
JP2018213632A
Publication Date:
November 17, 2022
Filing Date:
November 14, 2018
Export Citation:
Assignee:
TOYOTA JIDOSHA KABUSHIKI KAISHA
International Classes:
G01R31/388; G01R31/378; G01R31/3842; G01R31/389; G01R31/392; H01M10/42; H01M10/48; H02J7/00
Domestic Patent References:
| JP2014196985A | ||||
| JP2015158416A | ||||
| JP2014059206A | ||||
| JP2013187960A |
Foreign References:
| CN202770974U | ||||
| WO2016147572A1 |
Attorney, Agent or Firm:
Makoto Abe
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