Bi-directional DC/DC converter is the critical component for energy control of electric car and es- sential for hybrid power system. Considering that different options of bi-directional DC/DC converter topological structures can make difference to its cost and performance

hi-directional half-bridge converter of minimum voltage and current stress is chosen as the basis. Application of soft-switching technology without additional semiconductor devices effectively reduces the switching loss of components and two-phase staggered topological structure makes up the defect of high voltage and current ripples. In the bidirectional DC/DC converter

it adopts the control strategy in the way of two current inner-loops sharing a voltage outer-loop. By simulation experiments

it is proved that the converter can embody the stable control on bidirectional flow of energy and is featured by no-voltage and no-current switching

and low voltage-current ripples.