Wireless charging device, wireless charging method and mobile terminal using wireless charging device

The invention provides a wireless charging device, a wireless charging method and a mobile terminal using the wireless charging device, and relates to the technical field of communication. According to the wireless charging device and the ireless charging method, electricity charge can be independent of a fixed power grid and is more flexible. The wireless charging device comprises a bidirectional transducer and a controller, wherein the bidirectional transducer is used for converting direct current of a direct current power supply to an alternating current, and transmitting the alternating current to a to-be-charged device in an electromagnetic induction coupling manner so as to charge the to-be-charged device; or the bidirectional transducer is used for receiving the alternating current from a power supply in the electromagnetic induction coupling manner, and converting the received alternating current to the direct current so as to charge the direct current power supply. The wireless charging device, the wireless charging method and the mobile terminal using the wireless charging device are suitable for to-be-charged mobile terminals.