With rapid progress in the research and development of electric vehicles in my country, more and more electric vehicles have entered people's lives and vision. With the popularization of electric vehicles, the charging problem of electric vehicles has gradually become a concern of everyone. Electric vehicles replace oil with electricity, which can achieve "zero emission" and "low noise", which is an important means to solve energy and environmental problems. The charging system provides energy supply for the operation of electric vehicles. It is an important support system for electric vehicles and an important link in the commercialization and industrialization of electric vehicles. The charging system is mainly composed of four parts: charging pile, concentrator, battery management system, and charging management service platform. Among them, the self-service controller of the charging pile is mainly completed by an embedded industrial computer. Users can implement user authentication, balance inquiry, billing inquiry and other functions according to the voice prompts. They can also choose charging modes such as charging on time, charging according to power, automatic charging, and charging according to mileage according to the display screen. The self-service controller of the charging pile includes the control system, touch screen and card reader, etc. The data backup and management are realized by the control system. As an outdoor system that operates 24 hours a day, the control system needs to have the characteristics of robustness and wide temperature to ensure stable, safe and efficient operation of the system.
requires the control system to have the following characteristics:
● Fanless design, with a high mean time between failures, easy maintenance, and high reliability.
● Good anti-interference ability and can adapt to complex field environment.
● Good compatibility, compatible with car power supplies, and support for external network devices.
● Rich I/O interfaces can be flexibly connected to card readers, printers, watt-hour meters and other devices, allowing users to operate the charging pile freely.
● Compact structure, easy to embed and install in various narrow space equipment.
