The profit sources of charging piles basically come from three aspects, one is the profit of hardware, the other is government subsidies and charging service fees. "Su Hao, general manager of Star Charging, once said. Although the profit direction is clear, it actually includes hardware profit and charging service fee, which has little contribution to profit.

First, the definition and function of charging pile:

Charging piles are similar to fuel dispensers in gas stations. They can be fixed on the ground or on the wall and installed in public buildings (public buildings, shopping malls, public parking lots, etc.). ) and parking lots or charging stations in residential areas, and can charge all kinds of electric vehicles according to different voltage levels.

Second, the implementation of charging piles:

1. The input end of the charging pile is directly connected to the AC power grid, and the output end is equipped with a charging plug to charge the electric vehicle.

2. Charging piles generally provide two charging modes: conventional charging and fast charging. Use a specific charging card to swipe the card on the man-machine interface provided by the charging pile, and print the corresponding charging mode, charging time and cost data. The charging pile display screen can display data such as charging amount, cost and charging time.

Third, introduce the types of charging piles:

Charging piles can be divided into DC charging piles, AC charging piles and AC -DC integrated charging piles.

Four, the construction requirements of charging pile:

As an electric vehicle charging pile on the distribution side of the power grid, the particularity of its structure determines that the automatic communication system has the characteristics of many and scattered measuring points, wide coverage and short communication distance. And with the development of the city, the network topology needs flexible and extensible structure. Therefore, the following issues should be considered in the selection of the communication mode of electric vehicle charging piles:

(1) Reliability of communication-The communication system should stand the test of long-term harsh environment and strong electromagnetic interference or noise interference, and keep the communication smooth.

(2) Construction cost-On the premise of satisfying reliability, the construction cost and long-term use and maintenance cost are comprehensively considered.

(3) Two-way communication-not only can upload information, but also can release control quantity.

(4) Multi-service data transmission rate-With the continuous growth of terminal traffic in the future, the communication between the main station and the sub-station and the terminal requires higher and higher data transmission rate of multi-service.

(5) Flexibility and expansibility of communication-Because the charging pile has the characteristics of many control points, wide area and dispersion, it needs standard communication protocol. With the development of "all-IP" network technology trend and the continuous growth of power operation business, it is necessary to consider IP-based service bearer, and at the same time, it is required to be convenient for installation, debugging, operation and maintenance.