基于能量总线的锂电池组均衡管理系统设计

发布时间：2018-04-23 08:40

  本文选题：锂电池组 + 能量总线　； 参考：《湖南大学》2016年硕士论文

【摘要】：锂电池组是一个复杂的系统,而现有的对电池组的管理也存在着诸多问题,不当的管理方法既造成能源利用上的巨大浪费,还会严重缩短电池组的使用寿命。针对这种情况,本文结合信号总线的定义,利用“能量总线”的概念,设计了能量总线型的锂电池组均衡管理系统。系统以基于ARM Cortex-M3内核的STM32芯片作为处理器,配合外围的功能电路,通过移植定制的μC/OS-Ⅱ操作系统实现多任务管理,同时配合功能软件实现了系统功能。该系统能对锂电池组进行高效的均衡管理,同时还能通过GPRS网络将电池组的信息发送到服务器,从而能对电池进行大数据分析和对电池的健康状况进行观测。因GPRS网络的覆盖范围几乎遍及全国,并具有数据传输速率快、距离远、可靠性高等优点,所以非常适合对电池组的远程监测。本系统每隔一段时间就会对电池组中单体电池的电压电流信息进行采集,然后通过微处理器芯片判断锂电池组的状态,而后确定系统是否需要均衡。同时系统将采集的信息按照一定的协议格式发送到远程的服务器上。本文在估算锂电池组中的每个单体电池的剩余电量时,分析和对比了现有剩余电量的估算方法的优缺点后,运用无损采样点卡尔曼滤波法进行剩余电量的估算。在与服务器通信这部分,本文介绍了网络连接的实现方法并制定了数据通信协议。本系统整体线路少,结构简单,利于标准化生产。经测试,系统能够实现预期功能,可扩展性好,运行稳定。
[Abstract]:Lithium battery is a complex system, and there are many problems in the management of battery group. Improper management methods not only cause great waste in energy utilization, but also shorten the life of battery pack. In this case, the concept of "energy bus" is used to design the concept of "energy bus". The balance management system of the lithium battery group based on the quantity bus. The system uses the STM32 chip based on the ARM Cortex-M3 kernel as the processor, matches the peripheral functional circuit and transplants the customized mu C/OS- II operating system to realize the multi task management. At the same time, the system functions with the functional software. The system can carry out the efficient balance of the lithium battery group. Management, at the same time, can also send the battery information to the server through the GPRS network, so that the battery can be analyzed in large data and the health of the battery is observed. Because the coverage of the GPRS network is almost all over the country, it has the advantages of fast data transmission rate, far distance and high dependability, so it is very suitable for the battery group. Remote monitoring. This system will collect the voltage and current information of the single cell in the battery group every other time, then determine the state of the lithium battery group by the microprocessor chip, and then determine whether the system needs to be balanced. Meanwhile, the system will send the collected information to the remote server according to a certain protocol format. When estimating the residual quantity of each single cell in the lithium battery group, after analyzing and comparing the advantages and disadvantages of the estimation method of the existing residual electricity, the residual quantity is estimated by using the lossless sampling point card method. In the part of the communication with the server, the realization method of the network connection is introduced and the data communication protocol is made. The system has fewer lines and simple structure, which is conducive to standardized production. After testing, the system can achieve the expected function, good scalability and stable operation.

【学位授予单位】：湖南大学
【学位级别】：硕士
【学位授予年份】：2016
【分类号】：TM912
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本文编号：1791232