Electric vehicle as a development prospect of the broad green transport, the future will be very rapid pace of popularization, the future of the market is also very huge market prospects. In the context of the global energy crisis and environmental crisis is serious, the Chinese government actively promote the application and development of new energy vehicles, charge for power plants as required for the development of electric vehicles an important supporting infrastructure, with a very important social and economic benefits. A campaign to build an 220v EV charger / replacement station is already in the country.
The whole system is composed of four parts: portable electric vehicle charger, concentrator, a battery management system (BMS), charging management service platform.
220v electric car charger, the control circuit is realized by the embedded ARM processor, the user can self card user authentication, balance inquiries, billing inquiries, can also provide voice output interface, the realization of interactive voice. The user can according to the liquid crystal display to choose 4 kinds of charging mode: including charging, charging according to charge, automatically charging, charging according to the mileage, etc..
Electric vehicle charger controller and concentrators using CAN bus for data exchange, concentrator and the server platform using wired internet or GPRS wireless network data exchange, for the sake of safety, electricity charges and the amount of data realized security encryption.
The main function of the battery management system (BMS) is monitoring the battery working state (battery voltage, current and temperature), prediction power battery battery capacity (SOC) and the corresponding residual driving mileage, battery management to avoid over discharge, over charge, overheating and monomer battery voltage is seriously unbalanced phenomenon, to maximize use battery storage capacity and cycle life.
Charging service management platform has three main functions: charging management, charging operation, integrated query. Charging management related to the system of basic data for centralized management, such as information of electric vehicles, battery information, user card information, electric vehicle charging units information; charging operations mainly to the user for charging management, integrated query to query on data management and operation of the comprehensive analysis.
