Charging method based on constant current-constant voltage output characteristics of wireless power transfer system
A technology of wireless power transmission and constant voltage output, which is applied to battery circuit devices, current collectors, electric vehicles, etc., can solve the problems of rapid battery capacity drop and shortened cycle life, and achieve stable output and strong robustness Effect
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[0148] The research method of the present invention is carried out simulation analysis, in the parameter calculation process, known simulation parameters have: DC voltage source output voltage is 100V, high-frequency inverter output square wave AC voltage effective value U 1v =90V, resonant frequency f 0 = 85kHz;
[0149] Set the self-inductance L of the primary side coil of the coupler 1 =125μH, the self-inductance L of the secondary side coil 2 =125μH, mutual inductance M=37.5μH (that is, coupling coefficient k=0.3), L 0 = 125 μH. Parallel capacitance C on the primary side 1 =56.09nF, the secondary side series capacitor C 2 =28.05nF, from the formula (18), when the coupling coefficient k=0.3, ω nB =1.144, that is, the high operating frequency point f 0B =1.144, f 0 = 97kHz; do not consider the application of complex working conditions in the charging process of the battery, so only the influence of its internal resistance is considered. In the simulation, the resista...
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