Title:
二次電池の異常判定方法
Document Type and Number:
Japanese Patent JP7089677
Kind Code:
B2
Abstract:
To improve abnormality detection accuracy.SOLUTION: A secondary battery abnormality determination method to be proposed here includes: a step A of preparing a correlation relation between a capacitance value Cx and a resistance value Rx regarding an object secondary battery; a step B of measuring a resistance value R1 about an object secondary battery; a step C of obtaining a capacitance value C1 to be estimated based on a temperature frequency distribution about the object secondary battery; and a step D of identifying the resistance value Rx to be estimated of the secondary battery on the basis of the correlation relation between the capacitance value Cx and resistance value Rx acquired in the step A and the capacitance value C1 obtained in the step C, and when the resistance value Rx and the resistance value R1 obtained in the step B are more divergent than a predetermined threshold t1, determining that the object secondary battery is abnormal.SELECTED DRAWING: Figure 1
Inventors:
Keita Komiyama
Application Number:
JP2019037754A
Publication Date:
June 23, 2022
Filing Date:
March 01, 2019
Export Citation:
Assignee:
TOYOTA JIDOSHA KABUSHIKI KAISHA
International Classes:
G01R31/389; G01R31/392; H01M10/48; H02J7/00
Domestic Patent References:
| JP2017126462A | ||||
| JP2014190763A | ||||
| JP201526478A | ||||
| JP201872346A |
Attorney, Agent or Firm:
Makoto Abe
Michiko Oi
Hiroaki Yamane
Michiko Oi
Hiroaki Yamane