| 摘要 |
A plurality of battery pack blocks connected in series-parallel have their operation states monitored by battery ECUs, respectively based on detected voltage, current, and temperature. Detection outputs by current sensors provided at the charge/discharge circuits of the battery pack blocks are added up for the parallel-connected battery pack blocks in an analog data state before A/D conversion, so that the total charge/discharge current in the battery power source device is obtained.
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