ELECTRICAL ENERGY MANAGEMENT SYSTEM AND METHOD OF VEHICLE PERFORMING REGENERATIVE BRAKING

An electrical energy management system of a vehicle configured to perform regenerative braking includes: a battery configured to store regenerative braking energy generated by a motor; a water storage configured to store water; and a water electrolyzer configured to receive the water stored in the water storage and the regenerative braking energy generated by the motor as electrical energy, and produce hydrogen using the received water and regenerative braking energy. The system also includes: a hydrogen storage configured to store the hydrogen produced by the water electrolyzer; an air conditioner configured to receive electrical energy stored in the battery and the regenerative braking energy generated by the motor; and a controller configured to supply the regenerative braking energy to the water electrolyzer and the air conditioner.