Patent ID: 9102238
Filing Date: 2015-08-11
Classification: B60L,Y02T

Abstract:
1. An electric charging system in which an electric vehicle is provided with a power receiving connector to be connected to an electric storage device, a power supply connector of an electric charger is connected to the power receiving connector, and charging power is supplied from the electric charger to the electric storage device, the electric charging system comprising: a relay provided between the electric storage device and the power receiving connector and switched between a connection state and a disconnection state; a converter provided between the electric storage device and the relay and configured to boost a voltage of an electric power of the electric storage device to supply a boosted electric power to the relay; and a fail controller configured to detect a fail state of the electric charger and to drive the converter in a boost mode to supply the boosted voltage of the electric power of the electric storage device to one end side of the relay to thereby release a charging current from the electric charger, and then to switch the relay from the connection state to the disconnection state while the charging current is reduced.