Comparison of standards for conductive charging interfaces for electric vehicles

China [CN]

Overview: The development of electric vehicles is driving changes in the automotive, power and energy industries. In this emerging industry, the process of standardization is crucial. For example, the charging interface standards between electric vehicles and charging infrastructure, as well as wires and cables of different specifications and models, affect the transmission efficiency between power grids of different models in different countries and regions. It is easy to supplement electric power. The following introduces the methods used for conductive charging of electric vehicles and the comparison of the concept standards of combined charging interfaces.

Concept of the methods used for conductive charging: In the current conductive power supply process of electric vehicles, two methods are mainly used: DC charging (DC) and AC charging (AC). Generally speaking, since DC non-onboard chargers can generate higher power (more than 100Kw), the charging time is shorter and is mostly used in occasions that require fast charging, such as service areas and businesses. AC charging generally uses civilian 220V or 110V voltage to supplement the battery through the on-board charger. However, due to the limitations of the volume and heat dissipation conditions of the on-board charger, its power is usually below 7kW, so the charging time is long. Therefore, it is often used during the peak wind speed at night, and the night conduction charging is used to transfer the core technology of the car interaction to the electric vehicle.

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