【作者】 李海军；

【导师】 李军伟；

【作者基本信息】 山东理工大学 ， 车辆工程， 2008， 硕士

【摘要】 随着全球环保意识的增强和能源问题的突出,电动汽车已成为节能环保绿色车辆最主要的发展方向之一,在二十世纪得到迅速发展。电动汽车的动力源——动力电池,是目前电动汽车发展的瓶颈。电池技术和电池管理系统(BMS)的研究是解决该问题的关键,倍受人们的关注。本课题以云雀轿车改装的双轮驱动纯电动汽车(EV)为试验平台,以阀控式铅酸蓄电池为研究对象,研制适用于电动汽车的电池管理系统。目的是延长电池使用寿命、提高电池的能量效率和运行可靠性。本论文利用安时法(A.H)和卡尔曼滤波(KALMAN)来估算电池荷电状态,并利用MATLAB/Simulink仿真验证估算方法的精确性。在设计电池管理系统时,采用分散采集集中处理的电池管理系统设计方案,即首先对各个单电池的基本信息进行采集,然后由电池管理系统的控制芯片(Infineon XC164CS)进行集中处理计算,从而得出电池荷电状态和电池工作状态等信息。在硬件设计中详细介绍了ECU控制单元、信号采集电路、主电路短路保护电路、CAN通信接口电路等的设计。利用XC166集成开发环境Tasking与Simulink Real-Time Workshop(RTW)连接进行代码的硬件仿真与软件调试,采用V字型的开发流程,使各个开发阶段之间实现了无缝连接,提高了开发效率,保证研发系统的可靠性。最后,将铅酸蓄电池与本文所设计的电池管理系统联合进行调试、试验。试验结果表明,本文所设计的电池管理系统(BMS)可以实现蓄电池的电压、放电电流、温度等模拟量的采集,能够对电池剩余电量和电池荷电状态进行估算,液晶显示板能实时显示电池剩余电量并能够进行故障报警。更多还原

【Abstract】 With the enhancement of global environmental considerations and the prominence of energy problems, electric vehicle have become one of the most important trends for energy-saving green vehicles, and developed quickly in 20th century. The power supply—power battery of electric vehicle is the choke point of development of electric vehicle at present. The research of battery technology and battery management system is the key to solve this problem, which is paid more attention.This paper used the testing platform——electric vehicle of dual wheel driving basedon refitted lark car, taken Valve Regulated Lead Batteries as the research subject. The aim is to lengthen the service life of the batteries, to advance the energy efficiency of the batteries and operational reliability.Battery state of charge (SOC) can be accuretly estimated by using Ampere-Hour method and Kalman Filter method. The methods were verified by using MATLAB / Simulink simulation. When Battery Management System sampled the data, BMS design scheme of dispersal acquisition and centralized processing was adopted, which is used to collect essential information of every battery for BMS control chip. Thereby, the information on battery state of charge and battery operating state were acquainted. At the aspect of hardware design, design of ECU control unit system, acquisition circuit and short-circuit protection dcircuit were introduced in detail. Used XC166 integrated development environment Tasking and Simulink Real Workshop, realized the codes of hardware emulation and the software debugging, which advanced development efficiency and guaranteed reliability of Battery Management System.Finally, combinated the batteries with Battery Management System tested and debugged in the testing platform. Experimental results indicated that designed BMS system could realize analog singa acquisition, calculation of residual capacity and estimation of SOC, and so on.更多还原