BATTERY CONTROL DEVICE FOR ELECTRIC VEHICLE

摘要

PROBLEM TO BE SOLVED: To provide a battery control device for electric vehicle that notifies generation of hydrogen gas lower than a lower limit value of explosion to a user and so on to identify an abnormal state of the battery, etc. SOLUTION: A hydrogen sensor 13a detects a density of hydrogen gas generated by charging and discharging a battery 11 for running an electric vehicle. A first density identifying part 21 identifies that the detected density value becomes to be a fixed density value lower than an exposing lower limit or not by inputting the detected density value detected by the hydrogen sensor 13a. A generating number counter 23 counts a generating number when the detected concentration value becomes to be the fixed density value lower than the exposing lower limit or more during charging and discharging. A display part 28 displays generated number counted up.