AGV车用锂离子电池管理系统的设计与实现

发布时间：2018-06-16 20:17

本文选题：电池管理系统(BMS) + 容量评估　；参考：《西南科技大学》2015年硕士论文

【摘要】：随着手机、笔记本电脑、数码相机、MP4等消费便携式电子产品在生活中的广泛应用,市场对于锂离子电池的巨大需求也引导电池行业的继续走强,但是在锂离子电池使用中,电池存在过充、过热、过放、过流等现象,这将导致其寿命缩短,甚至出现燃烧、爆炸等安全问题,因此电池管理系统(Bsttery Management System:BMS)的研究成为了解决问题的关键,对提高锂离子电池的寿命和保证锂离子电池的安全有着极为重要的意义。本文首先介绍了锂离子电池的工作特性,并对锂离子电池类型进行了选择。然后对锂离子电池管理的功能进行了研究,针对本系统的均衡策略,容量评估,系统保护及通信管理方面制订了详细的解决方案。另外,分别对系统的电源电路,采集电路,充放电控制电路,主动均衡电路,通信和时钟等电路进行了说明。接着对系统的软件进行了详细的分块设计说明,本课题采用主动均衡方式实现电池组的均衡管理,结合开路电压法与安时积分法的优点实现对电池容量评估,并采用RS232串口通信实现数据的传送和参数的修改。最后,针对电池管理系统的常见问题,进行了一系列的测试,保证锂离子电池管理系统安全可靠的运行,达到了预期的设计目的。
[Abstract]:With the widespread application of portable electronic products such as mobile phones, laptops, digital cameras and MP4 in daily life, the huge market demand for lithium ion batteries has also led to the continued strength of the battery industry, but in the use of lithium ion batteries, There are overcharge, overheating, overdischarge, overcurrent and so on, which will shorten its life, even lead to safety problems such as burning and explosion, so the research of battery management system: Bsttery Management system: BMShas become the key to solve the problem. It is of great significance to improve the life of lithium-ion battery and ensure the safety of lithium-ion battery. In this paper, the working characteristics of lithium ion battery are introduced, and the type of lithium ion battery is selected. Then, the function of lithium ion battery management is studied, and a detailed solution is made for the balance strategy, capacity evaluation, system protection and communication management of the system. In addition, the power supply circuit, acquisition circuit, charge and discharge control circuit, active equalization circuit, communication circuit and clock circuit of the system are explained respectively. Then the software of the system is designed and explained in detail. In this paper, the active equalization method is used to realize the equalization management of the battery pack, and the capacity of the battery is evaluated by combining the advantages of the open-circuit voltage method and the Ampere-hour integration method. RS232 serial communication is used to transmit data and modify parameters. Finally, aiming at the common problems of the battery management system, a series of tests are carried out to ensure the safe and reliable operation of the lithium ion battery management system.
【学位授予单位】：西南科技大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TM912

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