In order to study the influence of the coupling coils on the transmission efficiency in wireless power transmission system with low-frequency excitation source

the dual software co-simulation method is used to analyze the magnetic field distribution under different placement modes of the electromagnetic coupling coil

and the relationship between the system efficiency and the excitation source waveform and the position of electromagnetic coupling coil is also given.The results show that no matter how the relative positions of the coils are distributed

the system transmission efficiency of the sine wave and triangle wave excitation sources has a small relationship with the coil position arrangement

the transmission efficiency of the two is similar

and the system transmission efficiency under the square wave excitation source is the lowest.Finally

using the lithium battery PNGV model as the system load

the system efficiency and time-varying waveforms are presented

so that the system charging process is closer to the actual charging situation.