Method and device for controlling charging of vehicle battery

A device for controlling charging of a battery, the device comprising:

• an engine clutch which is configured for connecting or disconnecting an engine of a vehicle and a drive motor of the vehicle;
• and
• a controller which makes the battery that supplies power to the drive motor start to be charged with a boosted voltage higher than a voltage of a fast charger by controlling a switch connecting the drive motor and the fast charger of the vehicle and a switch of an inverter driving the drive motor, for fast charging of the battery,
• wherein the controller is configured to determine whether a motor position sensor has failure according to an output signal of the motor position sensor which detects a position of the drive motor,
• wherein the controller is configured to engage the engine clutch when the controller determines that the motor position sensor has the failure, and
• wherein the controller is configured to maintain the fast charging for the battery when the controller determines that a rotation of the drive motor stops after the engine clutch is engaged.