CHARGING SYSTEM, METHOD OF CHARGING ELECTRIC VEHICLE, AND ELECTRIC VEHICLE

WIPO Patent Application WO/2010/113936

A1

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.

FUNAKOSHI HIROOMI (JP)

PCT/JP2010/055669

October 07, 2010

March 30, 2010

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TOKYO ELECTRIC POWER CO (JP)
FUNAKOSHI HIROOMI (JP)

H02J7/00; B60L3/00; B60L11/18; H01M10/44; H01M10/48; H02H3/16

JPH07123599A	1995-05-12
JP2000354332A	2000-12-19
JPS57119263A	1982-07-24
JPS549838U	1979-01-23

OHZEKI, Mitsuhiro (JP)
Mitsuhiro Ozeki (JP)

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