| 摘要 |
<p>A charger that promptly detects both Ground-faults at the charger side and electric leakages at the vehicle side, and conducts cut-offs more securely. The charger has a communication ground wire (110), which connects the negative electrode of a control system power supply (208) to the bodywork (203), grounded to the earth (400), for communication with a vehicle being charged. A ground-fault detection device (102) has; a serial circuit (1021) of resistors having the same resistance value, which is inserted between the charging wires 103A and 103B; a grounding wire (1023) that connects the point between the resistors 1021A and 1021B to the earth (400); a current detector (1022) that successively outputs the DC current value of the grounding wire (1023); and a controller (1024) that detects ground-faults at the charger side and electric leakages at the vehicle side, from the output of the current detector (1022). When a battery monitoring unit (209) of the vehicle being charged detects any abnormality in a battery (202), a control device (204) will notify the charger. A control device (104) of the charger will make an earth leakage breaker (105) execute cut-offs, when the controller (1024) detects ground-faults at the charger side or electric leakages at the vehicle side, or when the vehicle notifies the control unit (204) of battery-errors.</p> |
