| 摘要 |
PROBLEM TO BE SOLVED: To provide a power supply apparatus with a novel configuration capable of accurately detecting a defect including a layer short in a second circuit used for connecting switch means to the second circuit and limiting anti-excessive current performance required to the switch means and a wire interconnecting the switch means and a first battery.SOLUTION: A power supply apparatus includes: a second circuit 36 for connecting switch means 30 to a second battery 14, which configured by parallel connecting plural wires 40 with mutually the same form; detection means 42 for respectively detecting current values on the plural wires 40; and short state determination means 44 for calculating differences on the current values on the individual wires 40 detected by the detection means 42 and, if the differences are equal to or more than a given value, operating switch means 18 to disconnect a first circuit 34 from the second circuit 36. |
