基于STM32的实时电池管理系统研究

发布时间：2018-01-11 23:10

本文关键词：基于STM32的实时电池管理系统研究　出处：《郑州大学》2017年硕士论文　论文类型：学位论文

【摘要】：近年来,能源问题与环境问题已经是我国乃至全世界提的最多的问题,如何减少人类生活对化石能源的依赖性,如何减少人类生活对环境所造成的污染,成为人类研究的重点。而汽车行业恰好是与这两个问题息息相关的行业,如何减少汽车行驶对化石能源的依赖性,如何减少汽车尾气对大气的污染,就导致纯电动汽车成为汽车行业发展的趋势与方向。动力电池组是纯电动汽车的核心动力来源,而电池管理系统则是保证动力电池组正常、安全工作的前提,研究设计完善的电池管理系统对于提升动力电池组工作效率以及使用寿命有着非常重要的意义。本文将以动力锂电池作为研究对象,建立电池等效电路模型,实时估算电池SOC,并搭建相应的硬件平台,从而实现对动力电池组的实时管理。首先,本文将分析比较几种常用动力电池的工作特性,从而选择动力锂电池作为研究对象,然后针对动力锂电池的内部特性,通过比较几种常用电池等效模型的优缺点,确定使用Thevenin等效电路模型来表征动力锂电池的工作特性。然后利用MATLAB对等效电路模型进行参数辨识,并根据Thevenin等效电路模型以及分析目前常用的电池SOC估算方法,推导适合本文研究设计的实时电池管理系统的SOC估算方法。最后根据前面对于电池管理系统关键技术的研究,搭建适合本设计的硬件平台,通过设计数据采集模块、充放电均衡模块、温度监控模块、通信模块、LCD显示模块等硬件电路,并结合相应的软件程序设计,设计了能够实时检测动力电池组工作状态,基于单片机的实时电池管理系统。
[Abstract]:In recent years, the problem of energy and environment is our country and even the world's largest problem of human life, how to reduce the dependence on fossil energy, how to reduce human life caused by the pollution of the environment, has become the focus of human studies. The automotive industry is closely related to the two problems of the industry, driving the dependence on fossil energy to reduce the car, how to reduce automobile exhaust pollution of the atmosphere, leading to pure electric vehicles become the trend and direction of development of the automotive industry. The power battery is the core of pure electric vehicle power source, and the battery management system is to ensure the normal power battery, the premise of the safety work, research battery management system design has a very important significance to enhance the power battery working efficiency and service life. This paper will serve as the research object to power lithium battery, A battery equivalent circuit model, real-time estimation of battery SOC, and build the corresponding hardware platform, so as to realize the real-time management of the power battery. First of all, this paper will analyze the characteristics of several commonly used power batteries, to power lithium battery as the research object, and then according to the characteristics of the internal power lithium battery, by comparing the advantages and disadvantages the equivalent model of several commonly used batteries, to determine the characteristics of using the Thevenin equivalent circuit model to characterize the power lithium battery. Then using MATLAB to identify the parameters of the equivalent circuit model, and according to the Thevenin equivalent circuit model and the analysis of the current commonly used battery SOC estimation method, estimation method is suitable for real-time battery management system, this paper studies the design of SOC. According to the research on the key technology of the battery management system set up front, for the design of the hardware platform, through. Data acquisition module, charge and discharge equalization module, temperature monitoring module, communication module, LCD display module and other hardware circuits, combined with the corresponding software program design, a real-time battery management system based on single-chip microcomputer is designed, which can detect the working state of power battery in real time.

【学位授予单位】：郑州大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TM912;U469.72

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