基于数字控制的电动汽车直流充电桩系统的设计与实现
发布时间：2018-07-29 18:07
【摘要】：直流充电桩系统作为充电基础设施的重要组成部分,其性能的优劣将直接影响电动汽车的发展。因此,设计功能完善、安全可靠、兼容性好的电动汽车直流充电桩系统就具有重要的实际工程意义。本文在分析了电动汽车直流充电桩系统的功能及软硬件需求后,完成了整桩结构及控制系统的总体方案设计。方案中,功能组件模块化的设计降低了软硬件的设计难度,DSP+ARM双控制板结构的设计提高了数字控制系统的安全性、兼容性和可扩展性。将直流充电桩硬件分为三层结构,完成了基于双控制板的硬件设计并给出了控制板电路、辅助电路的详细设计过程。其中带保护的通信电路,带隔离的供电、采样电路,带反馈的急停、防雷、门禁电路的设计使控制系统满足了更高的安全要求。从充电控制、故障保护、人机交互、联网监控四个方面分析了直流充电桩的设计原理,完成了基于多任务模块的软件设计。将直流充电桩软件分成多个任务模块,研究主要流程中任务模块之间的交互流程,并在此基础上设计了任务模块的程序流程图。软件设计中有限状态机技术的使用提高了控制系统的安全性。搭建了直流充电桩实验平台,进行了充电控制、故障保护、人机交互、联网监控的功能实验,并对实验结果进行分析,验证了总体方案及软硬件设计的正确性及可行性。
[Abstract]:DC charging pile system as an important part of charging infrastructure, its performance will directly affect the development of electric vehicles. Therefore, it is of great practical significance to design DC charging pile system of electric vehicle with perfect function, safety and reliability and good compatibility. After analyzing the function, software and hardware requirement of DC charging pile system of electric vehicle, the overall scheme design of the whole pile structure and control system is completed in this paper. In the scheme, the modular design of functional components reduces the difficulty of hardware and software design and improves the security, compatibility and expansibility of the digital control system. The hardware of DC charging pile is divided into three layers. The hardware design based on double control board is completed and the detailed design process of control board circuit and auxiliary circuit is given. The design of the communication circuit with protection, the power supply with isolation, the sampling circuit, the sudden stop with feedback, the lightning protection circuit and the access control circuit make the control system meet higher security requirements. The design principle of DC charging pile is analyzed from four aspects: charging control, fault protection, man-machine interaction and network monitoring. The software design based on multi-task module is completed. The DC charging pile software is divided into several task modules, and the interaction flow between the task modules in the main flow is studied. Based on this, the program flow chart of the task module is designed. The use of finite state machine technology in software design improves the security of the control system. The experiment platform of DC charging pile is built, and the functional experiments of charging control, fault protection, man-machine interaction and network monitoring are carried out. The results of the experiment are analyzed, and the correctness and feasibility of the overall scheme and the design of software and hardware are verified.
【学位授予单位】：南京理工大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TM910.6
本文编号：2153561
[Abstract]:DC charging pile system as an important part of charging infrastructure, its performance will directly affect the development of electric vehicles. Therefore, it is of great practical significance to design DC charging pile system of electric vehicle with perfect function, safety and reliability and good compatibility. After analyzing the function, software and hardware requirement of DC charging pile system of electric vehicle, the overall scheme design of the whole pile structure and control system is completed in this paper. In the scheme, the modular design of functional components reduces the difficulty of hardware and software design and improves the security, compatibility and expansibility of the digital control system. The hardware of DC charging pile is divided into three layers. The hardware design based on double control board is completed and the detailed design process of control board circuit and auxiliary circuit is given. The design of the communication circuit with protection, the power supply with isolation, the sampling circuit, the sudden stop with feedback, the lightning protection circuit and the access control circuit make the control system meet higher security requirements. The design principle of DC charging pile is analyzed from four aspects: charging control, fault protection, man-machine interaction and network monitoring. The software design based on multi-task module is completed. The DC charging pile software is divided into several task modules, and the interaction flow between the task modules in the main flow is studied. Based on this, the program flow chart of the task module is designed. The use of finite state machine technology in software design improves the security of the control system. The experiment platform of DC charging pile is built, and the functional experiments of charging control, fault protection, man-machine interaction and network monitoring are carried out. The results of the experiment are analyzed, and the correctness and feasibility of the overall scheme and the design of software and hardware are verified.
【学位授予单位】：南京理工大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TM910.6
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