At present, the technology of wireless charging is not advanced enough, so the charging efficiency of wireless charging technology is lower than that of wired charging. At this stage, wireless charging is more as a supplement and auxiliary to wired charging. In addition, the current bottleneck hindering the large-scale use of wireless inductive charging technology is mainly about radiation concerns, because wireless charging will generate a strong magnetic field. When a person or animal is placed between the electric vehicle and the charging device, electromagnetic harm is possible. Therefore, ensuring the safety of wireless charging systems is also a key node