用于电动汽车无线充电线圈互操作性评价的量规设备研究

With the development of wireless charging technology for electric vehicles, more and more types of charging coils emerge. However, due to the different magnetic flux distribution, it is difficult to ensure the interoperability between the transmitter and receiver of different products, which hinders the interconnection between products. To accurately evaluate the interoperability between different coils, the fundamental mutual inductance (FMI) is selected as the indicator, and the relationship between the FMI and the coil interoperability is analyzed. Then, the open-loop voltage of the gauge device is used to calculate the FMI, which makes the FMI be measured easily. Aiming at the problem that the parameter design method of gauge device in the standard SAE j2954 is not clear, this paper analyzes the influence of different parameters on the evaluation results and proposes an optimization method for the gauge device. Finally, a prototype of the gauge device is designed. The evaluation results prove the effectiveness of the proposed design method of the gauge device.