I. Introduction
Driven by the "new infrastructure" policy, the number of charging piles will continue to increase in the future [1]. Since the new energy vehicle industry is still in a period of rapid development, the formulation of relevant standards is not perfect. For the field of electric vehicle charging, it is still in a state of more standards and more clutter. Different brands of electric vehicle charging devices and charging technologies cannot be shared [2], which restricts the large-scale development of electric vehicles.