基于STM32的直流充电桩控制系统设计

Design of Direct Current Charging Spot Control System Based on STM32

设计了一种双枪直流充电桩的电气结构,阐述了其单枪和双枪工作原理,提出了一种双枪充电桩的均充和轮充的输出控制策略。详细阐述了以STM32F407ZGT6处理器为核心的主控制系统应具有的基本功能及其主要的控制流程,分析各程序模块的功能。完成了主控制系统的硬件电路设计,包括CAN通讯、RS485、RS232等总线接口电路,并进行板上CAN接口电路的验证,通过ST官方库函数编程实现CAN在回环模式下的自发自收。通过软件设计,进而实现充电过程中的电气连接确认、电压电流等输出控制、电量计量、人机交互、刷卡结算等功能,满足电动汽车双枪直流充电桩系统的基本功能要求,提高控制智能化水平。

By designing and analyzing the electrical topology of direct current charging spot for eletric vehicle,a strategy of controling the output of double charging gun was proposed. The main control system based on STM32 F407 ZGT6 was designed. The basic function of main control system and the process of control were elaborated. The hardware circuit of main control system which including the interface circuit design of CANBUS,RS485 and RS232 was completed. And the circuit of CAN in loop back mode is Verificated. Besides,the confirmation of eletrical connection,the control of voltage and current output,the computation of eletric quantity,man-machine interaction,cash settlement,power-down memory and so on were completed. Then the requirement of the direct current charging spot system was satisfied and the standard of intelligent control was enhanced.