SECONDARY BATTERY DEVICE AND SECONDARY BATTERY SYSTEM

摘要

According to an embodiment, a secondary battery apparatus includes an outer case (24) including an airtight battery storing chamber (24a) formed inside, a coolant inlet (21) for supplying an insulative liquid coolant (27) to the battery storing chamber, and a coolant outlet (22) for discharging the liquid coolant from the battery storing chamber; and a battery cell (23) including an electrode terminal, the battery cell being disposed in the battery storing chamber of the outer case and immersed in the liquid coolant filled in the battery storing chamber.