电动汽车电池剩余电量SOC估计算法的研究
自从1992年索尼发明现代锂离子电池以来，锂离子电池就凭借其超高的比能量和清洁无污染的特点迅速发展，占据消费类电子市场的大半江山。但其在替代燃油机为乘用车提供能源的道路上却发展缓慢，除了电池本身的特性限制之外，针对锂离子电池的能量管理策略和工作状态监控手段发展缓慢也是制约其发展的重要因素。
本文对传统的电池SOC估算方法做出了分析，并提出了自己的估算方法。具体内容如下：
（1）对锂离子电池的工作特性进行了深入的了解，对动力锂离子电池的单体进行解剖，直观地观察了锂离子电池的结构，结合其工作原理确立管理系统的总体思想。
（2）列举并分析了现有的SOC估计算法
（3）提出了根据锂电池工作特性进行分段计算SOC的算法，并通过matlab对其进行仿真验证。
最后,对上述算法的可行性进行验证，结果表明：该算法是可行的。
关键词：锂离子电池，测控系统，SOC算法
毕业论文设计说明书外文摘要
Title Study on the SOC Estimation of Electric Car
Abstract
Recently, oil-based fossil fuels are being consumed at a higher speed.as a result of this condition, the problems of energy shortage and environment are continuously warning us about our life and future. Seeking the substitute of oil-based fossil fuels is a urgent matter for us, which should be clean and environmentally friendly.
Since 1992, Sony Corporation invented the modern lithium-ion battery, it takes the most share of the consumer electronics market . But it is difficult replace the oil-based fossil fuels for providing energy to motor vehicle . Except for its own features, the development of energy management and working condition monitor is also a very important restricting factor.
This paper is written inspired by an enterprise project, which is called “Power lithium.ion batteries and its anatomic parts.” And the measurement and control integration system works well after the software and hardware debugging. This paper contains the following contents:
（1）Study the theory and structure of lithium-ion battery.
（2）Study the estimation algorithm of SOC.
（3）Design a estimation algorithm depend on the characteristics of lithium-ion battery. Verify the algorithm with Matlab.
I verify the function of the system above. the result shows that the measurement and control integration system works well and stable.
Key words: lithium-ion battery, measurement and control system，estimation algorithm of SOC
目 录
1 引言 1
1.1 电动汽车技术研究背景 1
1.2 电池剩余电量的定义 2
1.3 电动汽车动力电池SOC国内外研究现状 2
1.4 论文的研究内容 3
2 锂离子电池的性能分析 4
2.1锂离子电池简介 4
2.2锂离子电池的优缺点 4
2.3 锂离子电池的性能参数 5
2.4锂离子电池的种类 7
2.5磷酸铁锂电池的工作原理 8
2.6影响电池SOC估算的因素 9
2.7 小结 10
3 锂离子电池SOC预测方法详解 11
3.1放电实验法 11