电动叉车锌聚苯胺电池管理系统的研究

发布时间：2018-03-23 11:58

本文选题：电动叉车　切入点：锌聚苯胺电池　出处：《哈尔滨工业大学》2013年硕士论文

【摘要】：电动叉车与传统内燃机相比，具有灵活性更好、可操作性更强、操作强度更轻的优点，并且污染更小，，更符合中国的新能源策略，近年来发展非常迅速。制约电动叉车发展的技术瓶颈是电动叉车的蓄电池，电池管理系统是解决蓄电池问题的关键技术难点之一，备受关注。以锌聚苯胺电池管理系统为研究对象，目的是对电池的工作状态信息实时监测、提高电池的能量效率和延长电池的使用寿命。对锌聚苯胺电池的充放电特性进行了分析，确定了电池充放电截止判据。对影响锌聚苯胺电池剩余电量的因素进行了分析，对几种常用的SOC估算方法进行了研究，并分析了各种方法的优缺点。设计了结合安时法与开路电压法优点的SOC估算方法。通过实验确定了安时-开路电压法的补偿方法，并对其进行了仿真，通过仿真结果与实验结果的对比证明了安时-开路电压法的准确性。设计基于微控制器的电池管理系统硬件电路。硬件部分设计了单片机最小系统模块、电源转换模块、电池状态信息采集模块、电池组均衡模块、故障报警模块、液晶显示模块以及CAN通讯模块，可对电池的实时状态信息进行检测，防止电池出现过充、过放、温度过高等导致电池使用寿命缩短的现象；可在液晶显示器上显示出实时SOC，方便驾驶员对电池状态进行判断；可与整车控制器进行通讯，使整车控制器可以对电池异常状态做出相应处理措施。根据设计的电池管理系统所需实现的功能与设计的SOC估算方法，绘制了相应的程序流程图，并使用C语言进行了程序编写。
[Abstract]:Compared with traditional internal combustion engines, electric forklifts have the advantages of better flexibility, stronger maneuverability, lighter operating intensity, less pollution and more in line with China's new energy strategy. In recent years, the technology bottleneck of electric forklift truck is the battery of electric forklift truck. Battery management system is one of the key technical difficulties to solve the problem of battery, and has attracted much attention. Taking the Zn-Polyaniline battery management system as the research object, the aim is to monitor the working state information of the battery in real time, improve the energy efficiency of the battery and prolong the battery service life. The charge-discharge characteristic of Zn-Polyaniline battery is analyzed, and the cutoff criterion of battery charge and discharge is determined. The factors influencing the residual charge of Zn-Polyaniline battery are analyzed, and several common SOC estimation methods are studied. The advantages and disadvantages of various methods are analyzed, and the SOC estimation method combining the advantages of the ampere-voltage method and the open-circuit voltage method is designed. The compensation method of the ampere-open-circuit voltage method is determined by experiments, and the simulation is carried out. The accuracy of the method is proved by comparing the simulation results with the experimental results. Design the hardware circuit of battery management system based on microcontroller. The hardware part designs the minimum system module, power conversion module, battery status information collection module, battery equalization module, fault alarm module. Liquid crystal display module and CAN communication module can detect the real-time state information of the battery to prevent the battery from overcharging, overdischarge and excessive temperature which lead to the shortening of battery service life. The real time SOC can be displayed on the LCD, which is convenient for the driver to judge the battery state, and can communicate with the vehicle controller so that the vehicle controller can deal with the abnormal state of the battery. According to the function of the designed battery management system and the SOC estimation method of the design, the corresponding program flow chart is drawn, and the program is programmed with C language.
【学位授予单位】：哈尔滨工业大学
【学位级别】：硕士
【学位授予年份】：2013
【分类号】：TH242

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