Patent ID: 9472957
Filing Date: 2016-10-18
CPC Classification: H01F,H02J

Claim Text:
1. A non-contact transformer system, comprising an electric magnetic interference filter for filtering electric magnetic interference; a bridge rectifier connected to the electric magnetic interference filter; a transformer connected to the bridge rectifier, and comprising a primary side inductor and a secondary side inductor for transforming a first current to a second current with high power factor and lowering voltage; a secondary side diode connected to the secondary side inductor in series; a secondary side capacitor connected to an unity of the secondary side inductor and the secondary side diode in parallel; a feedback circuit connected to a high voltage end of the secondary side capacitor; a front stage semiconductor switch connected to the primary side inductor; a controller connected to the feedback circuit and the semiconductor switch, and used for controlling the semiconductor switch to turn on or turn off the primary side inductor according to a signal returned by the feedback circuit; a transmitting circuit connected to the transformer and comprising: a half bridge resonator for transforming the second current to a third current, a transmitting inductor for transforming the third current to an electromagnetic energy to transmitting the electromagnetic energy wirelessly, and a feedback circuit with one end connected to a connecting point between the transmitting inductor and a ground capacitor and another end connected to the half bridge resonator; a receiving circuit comprising two receiving inductors for receiving the electromagnetic energy by electromagnetic induction and transforming the electromagnetic energy to a fourth current; and an output circuit connected to the receiving circuit and outputting the fourth current; wherein the half bridge resonator connected to: two rear stage semiconductor switches to form a controlling switch circuit; and a resonant tank comprising: a resonant capacitor connected to the controlling switch circuit; and a resonant inductor connected to the resonant capacitor.