智能快速充电设备的CAN总线通讯设计

Communication Design Based on CAN Bus for Quick Smart Charger

摘要: 为了满足快速充电市场对充电设备的实时状态监控，在大电流充电器的基础上，研究了加入CAN总线接口的通讯工作。利用CAN总线传输距离远，抗干扰能力强，易于扩展的特点，将充电器数据实时传送到上位机设备，上位机对充电器的电压和电流实时调整，实现充电最优化。详细分析了CAN总线工作原理和通讯协议的建立，最后通过搭建一个实验样机，验证了理论分析的正确性和可行性。

Abstract: In order to meet the real-time status monitoring of chargers in the fast charging market, on the basis of high-current chargers, we add the CAN bus interface to communicate. With the character-istics of long distance transmission, strong anti-interference ability and easy expansion, we transmit the charger data to the upper computer equipment in real time. The upper computer adjusts the voltage and current of chargers in real time to achieve the best charging. The working principle of CAN-bus and the establishment of communication protocol are analyzed in detail. Finally, an experimental prototype is built to verify the correctness and practicability of the theoretical analysis.