电动汽车用电池管理系统试验和开发-车辆工程专业论文.docxVIP

中文 中文摘要 重庆大 重庆大学硕士学位论文 I I PAGE PAGE VI 摘 要 纯电动汽车在日常行驶时不会产生废气污染，达到了节能减排的要求。动力 电池是纯电动汽车的唯一动力源，比混合动力汽车的动力系统简单，但是单体电 池间差异会影响电池组整体性能。因此，动力电池的性能好坏以及电池管理系统 的动态监测就至关重要。 电池管理系统直接监测及管理电动汽车的动力电池运行的全过程，包括电池 的基本信息检测、电量估计、单体电池间的均衡、电池故障诊断几个方面。 本文主要做了以下几方面的工作： ①针对某型号的锂离子电池进行不同充放电倍率的充放电试验；以及在不同 环境温度下的恒功率充放电试验。 ②分析锂离子电池SOC估计方法：最小二乘法和卡尔曼滤波法，并对二者进 行仿真对比分析。 ③设计电池管理系统的硬件系统，并把电池管理系统对电池的信息采集作为 重点设计目标，实现对电池电压、电流、温度等信息的采集。 ④针对设计电池管理系统，进行电池电压、电流、温度等信息采集精度的试 验，以及电池SOC估算精确度试验。 关键词：纯电动汽车，锂离子电池，电池管理系统，试验 英文摘 英文摘要 重庆大 重庆大学硕士学位论文 III III PAGE PAGE IV ABSTRACT The pure electric vehicle doesn’t generate any polluting emissions during working, which benefits the environmental protection, especially the cleanliness of the air. Battery power is the only power source for electric vehicles, and it is simplier than hybrid vehicles power system, but the differences between the cells will affect the overall performance of the battery pack. Therefore, the dynamic monitoring of the performance battery and battery management system is crucial. The whole process of the battery management system is directly monitoring and managing electric car battery operation and basic information strategies including battery capacity estimation, equalization, battery failure between the cells diagnostic aspects. In this paper, the following work areas: ① different charge-discharge rate for a particular model of a lithium-ion battery charge-discharge test; constant power discharge test under different ambient temperatures. ② analysis of lithium-ion battery SOC estimation method: The least squares method and Kalman filter, analysis of the result of the compared simulation of the two methods. ③ designed battery management system hardware, and make the collection of battery information as a key design goal, to achieve the the collection of battery voltage, current, temperature and other information. ④ with the designed battery management system, go on the battery voltage, current, temperature and other inf