Patent ID: 9118193
Filing Date: 2015-08-25
Classification: H01F,H02J,H02M

Abstract:
1. A bidirectional wireless charging/discharging device, which is adapted to be used in a portable electronic device comprising a circuit device, wherein the circuit device is electrically connected to a power receiving terminal and an electrical cell, the bidirectional wireless charging/discharging device comprising: a logic control unit, which comprises an automatic mode selection resetting module and a plurality of pins; a wireless receiving/transmitting unit, which comprises a transmission terminal and a receipt terminal, the receipt terminal being electrically connected to a detection pin of the logic control unit; a boost/buck unit, which comprises a first voltage regulation terminal, a second voltage regulation terminal, and two control terminals, the second voltage regulation terminal being electrically connected to the transmission terminal of the wireless receiving/transmitting unit, the two control terminals being respectively and electrically connected to first and second control pins of the logic control unit, the logic control unit having a power pin electrically connected to the second voltage regulation terminal and the transmission terminal that are connected to each other; a first reverse current suppressor, which comprises an input terminal, an output terminal, and a control terminal, the input terminal and the output terminal being respectively and electrically connected to a discharging terminal of the electrical cell and the first voltage regulation terminal of the boost/buck unit, the control terminal being electrically connected to a third control pin of the logic control unit; a control switch, which has an end electrically connected to the discharging terminal of the electrical cell and an opposite end electrically connected to the control terminal of the first reverse current suppressor and the third control pin of the logic control unit; a second reverse current suppressor, which comprises an input terminal, an output terminal, and a control terminal, the output terminal and the input terminal being respectively and electrically connected to the power receiving terminal of the circuit device and the first voltage regulation terminal of the boost/buck unit, the control terminal being electrically connected to a fifth control pin of the logic control unit; and a receipt or transmission mode selection unit, which is electrically connected between a receipt or transmission mode detection pin of the logic control unit and the discharging terminal of the electrical cell, the receipt or transmission mode detection pin being electrically connected to the automatic mode selection resetting module; wherein the automatic mode selection resetting module determines to resume the originally set receipt mode or the originally set transmission mode according to a predetermined period.