| 摘要 |
<p>According to one embodiment, a cell performance estimation method includes storing data obtained by measuring a cell temperature, an electric current, and a voltage while a secondary cell is charged or discharged, estimating an internal resistance value of the cell by using the cell temperature data, the electric current data, and the voltage data, and predetermined data indicating a relationship between a charged capacity and open circuit voltages of a cathode active material and anode active material, calculating a reaction resistance component, an ohmic resistance component, and a diffusion resistance component from the estimated internal resistance value and correcting the estimated internal resistance value based on a value obtained by correcting the reaction resistance component, the ohmic resistance component, and the diffusion resistance component in accordance with a temperature, and adding up the corrected values.</p> |
