Patent ID: 7688023

Claim:
A battery pack management method for a hybrid electric vehicle (HEV) or an electric vehicle (EV), the method comprising steps of: applying power for a control signal to a relay of a battery pack connection circuit disposed between a battery pack and a power conversion circuit of a vehicle motor unit through a battery management system (BMS) or vehicle control device; detecting current or voltage from a pre-charge resistor of the battery pack connection circuit when starting the vehicle; comparing the detected current or voltage with standard correspondence information pre-stored in a memory unit of the BMS to determine whether the detected value is within a normal range of a battery pack; and carrying out connecting the battery pack and the power conversion circuit when the detected value is within the normal range as a result of the determination, otherwise turning off a pre-charge relay of the battery pack connection circuit and then providing a driver with a warning signal through warning means electrically connected to the BMS.