| 摘要 |
<P>PROBLEM TO BE SOLVED: To accurately correct a remaining capacitance of a battery determined by current integration or power integration. <P>SOLUTION: A battery control device 7 calculates a remaining capacitance of a battery on the basis of any one of integration of charging/discharging currents of the battery and integration of charging/discharging power. When a first predetermined condition is established, the current control device 7 calculates a first correction remaining capacitance and when a second predetermined condition is established of which the frequency of establishment is more than that of the first predetermined condition, the battery control device 7 calculates a second correction remaining capacitance with calculation accuracy lower than that of the first correction remaining capacitance. When the first predetermined condition is established, the remaining capacitance based on the current integration or the power integration is corrected on the basis of the first correction remaining capacitance within such a range that a correction amount is less than or equal to a first correction upper limit amount and when the second predetermined condition is established, the remaining capacitance based on the current integration or the power integration is corrected on the basis of the second correction remaining power capacitance within such a range that the correction amount is less than or equal to a second correction upper limit amount smaller than the first correction upper limit amount. <P>COPYRIGHT: (C)2012,JPO&INPIT |
