Title:
STATE DETERMINATION METHOD
Document Type and Number:
Japanese Patent JP2015152318
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a state determination method enabling a state of a power storage device module including a plurality of power storage devices electrically connected to each other, to be easily determined.SOLUTION: The state determination method of a power storage device module including cells electrically connected to each other, is provided that includes: measuring a first resistance R1 at a first frequency and a second resistance R2 at a second frequency (steps S1 and S2); estimating a reaction resistance Ra and a pure resistance Rb of the power storage device module on the basis of the measured resistances R1 and R2 and prescribed parameters P1 and P2 (step S3); determining whether each of the estimated reaction resistance Ra and pure resistances Rb is within a prescribed range or not (steps S4, S5, and S8); and on the basis of the determination result, determining a state of the power storage device module (steps S6, S7, S9, and S10).
Inventors:
ODAGIRI TOSHIO
SHINODA HIDEAKI
SHINODA HIDEAKI
Application Number:
JP2014023540A
Publication Date:
August 24, 2015
Filing Date:
February 10, 2014
Export Citation:
Assignee:
TOYOTA IND CORP
International Classes:
G01R31/36; H01M10/48
Attorney, Agent or Firm:
Makoto Onda
Hironobu Onda
Hironobu Onda
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