Efficient wide-range voltage regulation SP/S resonance compensation electric automobile wireless charging topological structure

Abstract

The invention provides an efficient wide-range voltage regulation SP / S resonance compensation electric automobile wireless charging topological structure which has small conduction loss, an efficient system, a simple circuit structure and good stability. The structure comprises a transmitting terminal circuit, a receiving terminal circuit and a boosting circuit; the transmitting terminal circuit comprises a DC power supply, a full-bridge inverter circuit, a series-parallel resonance compensation network and a transmitting terminal coil; the receiving terminal circuit comprises a receiving terminal coil, a series resonance compensation network, and a single-phase full-bridge rectifier; the boosting circuit comprises a capacitance Ca which is in parallel connection at an output end of the rectifier, an inductance Lt and a regulating switch S which are in series connection at two ends of the capacitance Ca, a diode D which is connected to the junction point of the inductance Lt and the regulating switch S, and a capacitance Cb which is connected between the junction point of the inductance Ld and the regulating switch S and a load end which is corresponding to the diode D; the cathode of the diode D and the other end of the regulating switch S are the load end which is connected with a load R.

Description

technical field [0001] The invention relates to a wireless charging technology for an electric vehicle, in particular to a high-efficiency wide voltage regulation SP / S (series-parallel / series) resonant compensation electric vehicle wireless charging topology. Background technique [0002] In recent years, with the increasingly serious energy crisis and environmental problems, hybrid electric vehicles and pure electric vehicles have attracted more and more attention because of their environmental advantages. Wireless charging technology has attracted more and more attention because of its advantages of convenience, safety, and strong environmental adaptability. At present, the wireless charging technology for electric vehicles generally adopts inductive wireless charging technology. The system is coupled by a high-frequency magnetic field and transmits energy from the transmitter outside the vehicle to the receiver on the vehicle through the air gap. Inductive wireless charg...

AI Technical Summary

Problems solved by technology

Traditional closed-loop control can achieve good results, but closed-loop control produces problems such as complex circuit structure and reduced stability.

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