The fundamental problem in a battery/Supercapacitor hybrid energy storage system (HESS) is to develop a real-time controller for Electric Vehicles that can result in an efficient power exchange characteristic. This paper presents the design of a controller that optimally addresses this issue. Battery/Supercapacitor hybridization makes Electric vehicles more sustainable. Connecting the Supercapacitor in parallel with the battery increases the life of the battery and driving range. This research paper uses the Fuzzy Logic based controller to efficiently control the power between Battery/Supercapacitor. An electric vehicle using 270 kW 3-Phase Induction Motor and 250Ah battery with Field-Oriented Control (FOC) scheme having regeneration capabilities is modelled. The proposed Fuzzy Logic based controller effectively splits power between the battery/Supercapacitor. The proposed controller decreases the peak battery current by approximately 30% of its peak current and increases the driving range by 24%. It also compares results with battery only without regeneration braking and with regenerative braking. The Typhoon HIL system is employed for real-time experimentation, precisely validating the feasibility of the proposed model.