多模式电池组的能量快速扩展与分配方法研究

发布时间：2017-12-28 19:01

本文关键词：多模式电池组的能量快速扩展与分配方法研究　出处：《上海应用技术大学》2016年硕士论文　论文类型：学位论文

【摘要】：因为石油等化石燃料的普遍使用,现如今环境日益恶劣。尤其是随着全球经济的发展,使得汽车得以普及,环境问题将更加的严峻。使用纯电动汽车替换燃油汽车将会是一个新的趋势。电动汽车中的动力电源系统由许多电池组串并联而成,怎么对如此多的电池进行最为高效的管理,如何增加汽车的行驶里程,将会是本文将要研究的内容。本文以动力电池磷酸铁锂为研究对象,研究多模式电池组的能量快速扩展与分配方法,设计了用于监测电池电压、电流等信息的电池管理系统(battery management system,BMS),使用开路电压法与安时积分法计算磷酸铁锂电池的荷电状态(State of Charge,SOC)。为了方便对电池充放电过程的各信息量进行观察,开发了上位机监控软件,上位机监控软件对电池的充放电电流、电压及电池温度等信息,并将采集的数据保存在表格中。在文中利用采集到的数据,分析磷酸铁锂电池的回弹电压特性、阻抗特性等外特性。根据电池的这些特性,提出了磷酸铁锂电池的等效电路模型,通过辨识所需要的参数,建立Simulink仿真模型,在仿真模型上验证了等效电路模型的有效性。利用建立了的电池仿真模型搭建能量扩展与分配方法研究平台,在该平台上研究如何对多模式电池组的能量进行快速分配与扩展,提出了一种对电池组实现分配的方法,通过仿真实验证明了方法的可行。
[Abstract]:Because of the widespread use of fossil fuels such as oil, the environment is getting worse now. In particular, with the development of the global economy, the automobile can be popularized and the environmental problems will be more severe. Replacing fuel cars with a pure electric vehicle will be a new trend. The power supply system of electric vehicle is made up of many battery groups. How to manage the most efficient batteries and how to increase the mileage of cars will be the contents of this paper. In this paper, the power battery of lithium iron phosphate as the research object, the research on multi mode battery energy rapid expansion and allocation method for battery management system monitors the battery voltage and current information design (battery management, system, BMS), calculation of lithium iron phosphate battery using open circuit voltage method and an integral method of state of charge (State of Charge, SOC). In order to observe the information of battery charging and discharging process conveniently, we have developed the host computer monitoring software. The host computer monitors the charge and discharge current, voltage and battery temperature of the battery, and stores the collected data in the form. In this paper, using the collected data, the characteristics of the springback voltage and impedance characteristics of the lithium iron phosphate battery are analyzed. According to these characteristics of the battery, the equivalent circuit model of LiFePO4 battery is put forward. By identifying the parameters needed, Simulink simulation model is established, and the validity of the equivalent circuit model is verified on the simulation model. Use the battery simulation model was established to build the energy spread and distribution method research platform, the platform on the research on how to model the battery energy distribution and rapid expansion, puts forward a method to realize the distribution of the battery, through the simulation experiment shows that the method is feasible.
【学位授予单位】：上海应用技术大学
【学位级别】：硕士
【学位授予年份】：2016
【分类号】：TM912;U469.72

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