【作者】 江秀道；

【导师】 黄菊花；

【作者基本信息】 南昌大学 ， 车辆工程， 2011， 硕士

【摘要】 当今世界面临着的能源危机和环境污染两大难题都与汽车的使用相关,要保持汽车行业的可持续发展,发展零排放的电动汽车势在必行。磷酸铁锂电池由于其安全、环保、性能稳定及经济的优点越来越多的应用于电动汽车动力系统中,但磷酸铁锂电池的智能、安全充电是电动汽车能够推广应用的前提,因此本文对磷酸铁锂电池智能充电系统进行了研究,其主要研究内容和创新点如下：本文首先进行了智能充电系统总体方案设计,确定了充电系统的设计参数、全桥变换电路的功率模型及PWM开关状态控制电路,在分析了常用充电方法的基础上根据磷酸铁锂电池的相关特性提出了四阶段智能充电法；其次进行了硬件设计,包括抑制电磁干扰的滤波电路、IGBT驱动电路、高频变压器、输入输出滤波电路、单片机控制回路、辅助电源及智能逻辑判断电路的设计,软件上为设计的四阶段智能充电法编制了相应的程序,并进行了软件调试与测试；最后对开发的磷酸铁锂电池智能充电系统进行了充电实验,结果表明：所设计的智能充电系统硬件部分能正常工作,充电过程可按所设计的四阶段智能充电法预定流程自动进行,为后续对磷酸铁锂电池智能充电系统研制提供了参考。更多还原

【Abstract】 Energy crisis and environmental pollution are the two problems that today’s world faces, and both of them are related with the use of vehicles. In order to maintain the sustainable development of auto industry, it is imperative to develop zero-emission electric vehicle. Lithium iron phosphate battery has been applied to power system of electric vehicle more widely because it has the advantages of secure, environmental protection, stable performance and economic. However, to apply and publicize the electric vehicles, characters of intelligent and safe charge of lithium iron phosphate battery are the prerequisites. In this paper, it introduces the research of the lithium iron phosphate battery intelligent charging system, the main research content and innovation points are as follow:First of all, this paper introduces the whole scheme of the intelligent charging system, and determines the design parameter, power model of full bridge transform circuit and PWM switch situation control circuit. Based on the analysis of common charging methods, a four-phase intelligent charging method has been proposed according to the related characteristics of lithium iron phosphate battery.Secondly, this paper introduces the designed hardware, including the design of filter circuit to restrain electromagnetic interference, IGBT driving circuit, high-frequency transformer, input/output filter circuit, SCM control loop, auxiliary power and intelligent logic circuit. In software, corresponding program for the four-phase intelligent charging method has been worked out, and debugging and testing have been done.Finally, charging experiment on the designed lithium iron phosphate battery intelligent charging system shows that the designed hardware part of intelligent charging system can work normally, and the charging process can going on automatically according to the predetermined process with the use of designed four-phase intelligent charging method. It provides reference value for follow-up research.更多还原