This research proposes switching operational modes using a bidirectional DC/DC converter, popular in battery-powered EVs. The suggested design shifts the converter from boost to buck mode when DC-link voltage is too high. This strategy could reduce the EV energy storage system's carbon impact and increase efficiency. A buck-boost DC/DC converter raises the DC-link voltage while driving and charges the battery while braking. PI control stabilizes the DC-link voltage during boost mode driving. Buck mode PI battery voltage control reduces voltage ripples. Both forms of operation use current control to distribute battery current evenly amongst converter modules. The proposed technique is tested utilizing an EV propulsion system in a simulation.