Four-coil receiving device improving mobile wireless electric energy transmission quality, and application of four-coil receiving device
A receiving device and wireless energy technology, which is applied in the direction of circuit devices, power management, transportation and packaging, etc., can solve the problems affecting the use effect of electric vehicles and other equipment, affecting the quality of wireless energy transmission, and damaging energy storage equipment. Effects of transmission efficiency, cost reduction, and pressure reduction on energy storage equipment
Inactive Publication Date: 2017-10-20
SHANGHAI JIAO TONG UNIV
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Abstract
The invention provides a four-coil receiving device improving mobile wireless electric energy transmission quality, and the device comprises a four-coil receiving structure and an outer rectification circuit. Each two of the coils serve as one group, and the winding directions of the coils of each group are opposite. The coils in the same group are corresponding to different magnetic field polarities at the same moment, and the distance between the two groups of coils is one fourth of the length of the receiving device in space. The two groups of coils are respectively corresponding to the peak and valley of a spatial magnetic field at the angle of the magnetic field. The output end of the two groups of coils are respectively connected with one rectification circuit, and are selectively connected in series or in parallel according to the load conditions. When the two groups of coils are connected in series, the voltages obtained by the two groups of coils through the magnetic field are overlapped, thereby obtaining a higher output voltage. When the two groups of coils are connected in parallel, the loading capability of a wireless transmission secondary side is enabled to be stronger, and more stable power is supplied to a load. The device is widely used in the field of electric car mobile charging, effectively inhibits the fluctuation of the charging voltage of an electric car in a moving process, enables the transmission process of energy to be more stable, and provides a new technical means for the mobile charging of the electric car.
Application Domain
Charging stationsCircuit arrangements +4
Technology Topic
Mobile wirelessCharge voltage +10
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