Battery management apparatus, vehicle having the same, and method of controlling vehicle

A vehicle comprising:

• wheels using at least one of power of a motor and an engine as a driving power;
• a battery having a plurality of cells and configured to supply power to the motor;
• a voltage detector configured to detect respective voltage values of the plurality of cells and to output voltage information about the detected voltage values;
• a storage configured to store a first map in which power limit values corresponding to voltage deviation values are matched;
• a battery management apparatus including a processor configured to
• identify a maximum voltage value and a minimum voltage value among the voltage values of the plurality of cells,
• obtain a voltage deviation value between the maximum voltage value and the minimum voltage value and a first power limit value of the battery corresponding to the voltage deviation value based on the first map, and
• obtain a first final power limit value based on the first power limit value of the battery and a preset weight when the voltage deviation value exceeds a first reference value;
• and
• a controller configured to control an operation of at least one of the motor, the battery, or the engine, and to control discharge of the battery based on the first final power limit value obtained from the battery management apparatus.

A method of controlling a vehicle, the vehicle including a motor, an engine, and a battery, the method comprising:

• detecting respective voltage values of the plurality of cells provided in the battery;
• identifying a maximum voltage value and a minimum voltage value among the voltage values of the plurality of cells;
• obtaining a voltage deviation value between the maximum voltage value and the minimum voltage value;
• obtaining a deterioration rate of the battery;
• obtaining a power limit value of the battery based on at least one of the voltage deviation value or the deterioration rate of the battery;
• obtaining a final power limit value based on the power limit value and a preset weight;
• and
• controlling a discharge of the battery based on the final power limit value.