BATTERY CHARGING CONTROL DEVICE

摘要

In the present invention, when a battery is warming up (S12), the battery charge state when battery warming up started is the battery hold capacity (SOChold) (S14, 15), and charging power to the battery is controlled in a manner so that SOC is maintained at SOChold. During a timer charging reservation time (S11), charging power to the battery is controlled in a manner so that SOC becomes a fully charged state (SOCfull) (S16). Even if the SOC temporarily trends worse due to a rapid rise in heater power consumption immediately after the start of warm-up, by means of holding SOC at SOChold, it is possible to cause SOC during the timer reservation charging time to be a fully charged state as aimed for, and it is possible to suppress running cost by increasing as much as possible the fraction of charging that uses low-cost late-night power.