Review on the risk and treatment of electric vehicle charging pile charging leakage

As the power supply source for electric vehicles, charging piles have caused frequent safety accidents due to electric leakage in recent years, which has attracted high attention from the society. The electricity risks of charging piles will directly affect the sales and promotion of electric vehicles. According to the different types of leakage current, the application of residual current protection is introduced in detail, and the corresponding leakage protection is analyzed on the basis of the four different charging modes of charging pile. At the same time, the influence and harm of other electric vehicle charging leakage and DC leakage is studied. Finally, through the comparison and summary of existing technologies, the future development trend of intelligentized charging piles is proposed. It not only helps to enhance the understanding of electric vehicle charging safety issues, but also provides a new direction for the application and innovation research in this field.