| 摘要 |
A mean vehicle speed Va and a mean variation DELTA Va are factors reflecting a current driving condition and an expected driving condition of a vehicle, which relate to a charge-discharge amount of a battery. A target state SOC* of the battery is calculated from the mean vehicle speed Va and the mean variation DELTA Va. The charge-discharge amount of the battery increases with an increase in mean vehicle speed Va and mean variation DELTA Va. The lower charging state of the battery results in the higher charge-discharge efficiency. The structure of the present invention sets the target state SOC* of the battery and controls the actual state of the battery to the target state SOC*, thereby enhancing the charge-discharge efficiency of the battery and ensuring a sufficient supply of electric power required for driving the vehicle. <IMAGE> |
