Alternating current charging system of charging pile

Abstract

The invention discloses an alternating current charging system of a charging pile. The system comprises a man-machine interaction unit, a control module, a measurement module, a safety protection module and a communication module, and the alternating current charging system further comprises a protection function thunder preventer used for preventing inductive thunder and preventing switching overvoltage; the man-machine interaction unit is provided with a touch screen operation interface, and the charging mode on the interface can be set as an automatic fully charging mode, an electric quantity-based mode, a money amount-based mode and a time-based mode; the charging start mode is an immediate start charging mode; the charging mode, time, electric quantity and expense messages are displayed in real time in the charging process; the control module acquires the measurement information of the measurement module through an RS485 circuit, and conducts charging billing and coordinated control over the charging process based on the measurement information. The alternating current charging system of the charging pile has the advantages that the system can be expanded, a battery can be effectively protected by means of the charging function, and the service life of an electric vehicle can be prolonged.

Description

technical field [0001] The invention relates to the field of electric vehicle charging equipment, in particular to an AC charging system for a charging pile. Background technique [0002] New energy emerges as the times require, among which the development of new energy electric vehicles is a typical example, and charging piles, as supporting facilities for providing power to electric vehicles, are particularly important for new energy electric vehicles. Charging pile is a terminal device used for charging new energy electric vehicles. Its function is similar to that of a fuel dispenser in a gas station. It can be fixed on the ground or wall and installed in public buildings (public buildings, shopping malls, public parking lots, etc.) and In the parking lot or charging station of the residential area, various types of electric vehicles can be charged according to different voltage levels, and charging can be realized by timing, electricity meter, and amount meter, and can b...

AI Technical Summary

Problems solved by technology

Since the DC charging pile is powered by a three-phase four-wire system, it can provide sufficient power, and the output voltage and current can be adjusted in a large range, which can meet the requirements of fast charging, but such a defect is that the life of the battery is greatly reduced, and the battery life of the electric vehicle is greatly reduced. The service life is also greatly reduced, which increases the cost of using the car

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