Patent ID: 9583970
Date: 2017-02-28
CPC Classifications: H02J

Claim:
1. A wireless power transfer and rapid charging system with maximum power tracking comprising a transmitter device and a receiver device; wherein the transmitter device includes a high-frequency receiving circuit, a decoder, a digital controller, a digital-to-analogue converter (DAC), a voltage-controlled oscillator (VCO), an anti-overlapping circuit, a phase-1 buffer circuit, a phase-2 buffer circuit, a first power transistor, a second power transistor, a coil and a RLC resonant circuit; the high-frequency receiving circuit is used for receiving inductive energy of the receiver device and is connected to the decoder; the decoder used for decoding inductive energy of the receiver device is connected to the digital controller; the digital controller is connected to a memory and the DAC while the digital controller and the DAC are connected to the VCO for providing different input voltages the VCO requires; the VCO is connected to the anti-overlapping circuit and using a constant-current inverting oscillator for generating scanning frequency; the anti-overlapping circuit is connected to the phase-1 buffer circuit and the phase-2 buffer circuit while the phase-1 buffer circuit is connected to the first power transistor and the phase-2 buffer circuit is connected to the second power transistor; output from the anti-overlapping circuit is passed through the phase-1 buffer circuit and the phase-2 buffer circuit to provide sufficient drive capability for driving the first power transistor and the second power transistor respectively so that the coil connected to the first power transistor and the second power transistor creates a magnetic field to be output by the RLC resonant circuit connected to the coil; wherein the receiver device includes a RLC resonant circuit, a half-wave-rectifier circuit, a voltage regulator unit, a voltage sensing & high-frequency signal transmitting circuit, and a charging circuit; the RLC resonant circuit is corresponding to the RLC resonant circuit of the transmitter device and is connected to the half-wave-rectifier circuit while the rectifier circuit is connected to the voltage regulator unit; the voltage sensing & high-frequency signal transmitting circuit is arranged between and connected to the half-wave-rectifier circuit and the voltage regulator unit; the voltage regulator unit is connected to the charging circuit while the charging circuit is connected to the voltage sensing & high-frequency signal transmitting circuit; the voltage sensing & high-frequency signal transmitting circuit having a voltage detection circuit, a quantizer, a controller, a high-frequency transmission circuit and a switch; an input end of the voltage detection circuit is connected to the switch and the voltage detection circuit is connected to the quantizer while the quantizer is further connected to the controller; the controller is connected to the high-frequency transmission circuit; thus voltage detected by the voltage detection circuit is transmitted to the high-frequency receiving circuit of the transmitter device by the high-frequency transmission circuit; the charging circuit includes a constant current circuit, a power transistor, a change over switch, a battery and a load; the constant current circuit is connected to the power transistor and the power transistor is connected to the battery by the change over switch for charging the battery; the battery is connected to the load and used for providing power to the load.