As the main power source of electric vehicles, the performance of the power battery determines the performance of the whole vehicle, so the performance test of the power battery is crucial. In the actual electric vehicle driving process, it will encounter changes in the starting, acceleration, constant speed, braking and other actual working conditions. In order to simulate the dynamic performance of the battery under operating conditions. According to the test methods and requirements of the power battery, this paper chooses the DST (dynamic stress test) of the FUDS (federal urban driving schedule). The DST standard power curve is used as the reference curve. The main circuit topology is an Interleaved Bidirectional DC/DC converter. The working principle of the converter is described and the parameter design and control method are given.