Battery control device

摘要

According to one embodiment, a secondary battery control apparatus includes a charger/discharger (12) and a charge/discharge controller (13). The charger/discharger connects a plurality of secondary batteries (2, 7), and charges one secondary battery by electric power discharged by another secondary battery. The charge/discharge controller controls the charger/discharger such that charging and discharging are performed between the plurality of secondary batteries by using the charger/discharger if battery temperature information detected by temperature detector (11) is lower than a preset threshold temperature, wherein the charging is stopped and switched to discharging or pause if voltage information detected by the voltage detector (10) reaches the upper limit voltage of the secondary battery, and the discharging is stopped and switched to charging or pause if the voltage information detected by the voltage detector reaches the lower limit voltage of the secondary battery.