| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a method for accurately estimating the state of charge (SOC) of a storage battery.SOLUTION: A device for estimating the state of charge of a storage battery includes: means 104 for calculating the SOC from information on a voltage, charge and discharge currents, and temperature of a storage battery with an arithmetic expression using a coefficient group; means 105 for performing, in creating or updating the coefficient group, switching as to whether make the same or different a direction of charge or discharge during the measurement of a voltage, currents, and temperature of the storage battery for the creation of coefficients and a direction of charge or discharge during the adjustment of the SOC to be a preferred value, which is temporally prior to the measurement; and means 106 for creating/updating the coefficient group for estimating the SOC from the measurements obtained by the above means.</p> |
