The development of cities is inseparable from convenient transportation, but social progress has put forward higher requirements for the environment. In cities with serious exhaust emissions from fuel vehicles, public transportation is an important component. The use of new energy electric vehicles in this field, It plays a decisive role in energy conservation and emission reduction. It can not only achieve huge low-carbon environmental benefits, reduce urban pollution and purify the environment, but also has a good demonstration and promotion effect.

The electric vehicle charging and swapping service network is a strong support for the development of the electric vehicle industry, and the construction of an operation monitoring system is an important supporting platform for the rapid development of the electric vehicle intelligent charging and swapping service network. Focusing on the State Grid Corporation of China's "power exchange as the mainstay, plug-in charging as the supplement", a development strategy for regional and national charging service networks has been gradually formed.

Solutions for smart charging systems for electric vehicle groups:

The intelligent box-type transformer is used to support the electric vehicle group intelligent charging system, and a four-layer structure of equipment layer, control layer, dispatching layer and platform layer is established. Group control and group management are used to achieve priority for residents' power consumption, orderly charging of remaining load vehicles, and realize low-efficiency charging. Charging, safe electricity use, and building a charging terminal that is pile-free, waterproof, anti-crush, and the plug is not charged when not charging, connects human-computer interaction with mobile Internet and cloud platforms, forming a high-voltage to low-voltage, A large system and platform from AC to DC, from centralized control to dispatch, from man-machine to mobile phone, from charging management to Internet cloud platform management.