The bidirectional DC-DC converters have been widely used in micro-grids, renewable energy systems, electric vehicles and other applications to ensure the power flows from and to, or between various energy storage devices. Energy storage systems have been a major research area in which battery is one of the most widely used. A new battery ultra-capacitor hybrid energy storage system is proposed for electric vehicles. The main objectives of using ultra-capacitors alongside battery is to improve the performance, increase the system efficiency and extend the battery life. In many applications, conventional bidirectional converters are inadequate since the specified range of input voltages and the specified range of output voltages call for an extremely large range of conversion ratios. A new bidirectional z- source converter with high voltage gain in both step-down and step-up operation modes is used here. In this work, an Ultra Capacitor is integrated with the battery in an Electric Vehicle using the new bidirectional converter to improve the dynamic performance of the vehicle system and enhancing the battery life. The simulation work is carried out using MATLAB/SIMULINK R2015 software. Hardware is made and the control strategy is implemented using TMS320F28027.