the present disclosure illustrates a bidirectional wireless charging device . the bidirectional wireless charging device comprises a transceiver chip which is configured to receive a switch signal . the transceiver chip comprises a power stage circuit and a control module . the power stage circuit is coupled to a coil , and the control module is coupled to the power stage circuit . the power stage circuit is configured to output a voltage to the coil , or to receive an induced voltage from the coil . the control module is configured to control the transceiver chip to enter a power mode or a charging mode based upon the switch signal . when the transceiver chip enters the power mode , the transceiver chip provides the voltage to the coil . when the transceiver chip enters the charging mode , the transceiver chip receives the induced voltage from the coil and charges a power storage unit .