Method and system for verifying battery voltage detection of eco-friendly vehicles

A system for verifying battery voltage detection in a vehicle, the system comprising:

• a battery that stores power energy for driving the vehicle and includes a plurality of cells;
• a sensor unit including a voltage sensor that detects voltage of the plurality of battery cells forming the battery;
• a battery management unit that is configured to determine whether abnormality has occurred in voltage detection based on a voltage of a first battery cell with a highest voltage among the plurality of battery cells forming the battery at a first time point in response that a limited discharge output of the battery decreases at or below a threshold power while the vehicle is running and a voltage of a second battery cell with a lowest voltage at the first time point, and to recover an output of the battery to a normal output that allows the vehicle to drive normally in response that the battery management unit concludes that the abnormality has occurred in the voltage detection;
• and
• a vehicle control unit which is configured to control the vehicle based on the output of the battery.