| 摘要 |
PROBLEM TO BE SOLVED: To properly improve detection precision of a current sensor by sequentially correcting the error of the current sensor.SOLUTION: The error correction method of a current sensor includes: the step in which, during a first period where charging with a charger 1 is being performed, the error of a current sensor 19 is corrected in OFF state, to calculate a fully charged capacity CAPAchg of a secondary battery 11 by using a current sensor output I after the correction; the step in which, during a second period containing at least the travel time of an electric vehicle 10, other than the first period, a fully charged capacity CAPAdrv of the secondary battery 11 is calculated using the current sensor output I; and the step for correcting the error of the current sensor 19 by using a result of comparison between the fully charged capacity CAPAchg and the free charged capacity CAPAdrv. |
