| 摘要 |
PROBLEM TO BE SOLVED: To obtain a junction box with a function for stably distribution power, even without providing protection circuit or the like at a load side and at the same time for measuring the remaining capacity of a power supply. SOLUTION: This intelligent junction box eliminates an overvoltage component by an overvoltage protection circuit 17 of a high-voltage system part, when a first voltage from a high-voltage battery 11 reaches an overvoltage exceeding 36 V, due to failure of a load or an alternator 1 in a junction box 10 provided among the high-voltage battery 11, a low-voltage battery 13, and the load, and at the same time a DC-DC converter 28 at a low-voltage system part generates 14 V and 7 V based on the high-voltage first power and the low voltage of AC 14 V, thus charging the low-voltage battery 13 provided downstream by the generated 14 V. |
