CPC G01R 31/367 (2019.01) [G01R 31/3842 (2019.01); H01M 10/48 (2013.01)] | 17 Claims |
1. A characteristic estimation device for a storage battery, comprising:
voltage detection circuitry to detect a terminal voltage of the storage battery;
time-series data acquisition circuitry to acquire time-series data on the terminal voltage in a stopped state of the storage battery;
model provision circuitry to provide a storage battery model that includes an OCV term for expressing OCV of the storage battery, and an interparticle diffusion term which is based on a fundamental solution of a one-dimensional diffusion equation expressing ion diffusion among particles forming an electrode of the storage battery; and
model parameter estimation circuitry to estimate a model parameter of the storage battery model based on the time-series data on the terminal voltage acquired by the time-series data acquisition circuitry and on the storage battery model provided by the model provision circuitry.
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