To make up for the shortcomings of one-way energy flow between electric vehicles (EVs) and the grid, improve the flexibility of EVs in the charging and discharging process and strengthen the capability to absorb new energy generation on-site, a DC microgrid topology with bidirectional wireless power transmission (BD-WPT) for EVs is proposed, and a control method of using the EV battery as a mobile energy storage device is studied. This topology is based on a wind-solar hybrid power generation system and hybrid energy storage, and a power-based control method for the BD-WPT system is put forward, which can ensure that the EV can be used both as a load to absorb energy and as an energy storage device to emit energy. To guarantee the stable operation of the system, a microgrid upper-layer central controller is further designed. Simulink simulation results show that the energy interaction between EVs and the grid improves the stability of grid operation, and the BD-WPT system can improve the charging and discharging effects of EVs. To a certain extent, the on-site consumption of new energy power generation is promoted, indicating the effectiveness of the proposed topology and the superiority of the control strategy.