电动汽车动力电池均衡技术对于电动汽车的推广有非常重要的意义。电池均衡技术 可以有效的减少动力电池组中各单体电池的不一致性，提高电池组电池的容量利用率。 本文对电动汽车用动力电池的特性进行分析，选取了相应的均衡变量。并从电池均衡的 原理出发，通过对比电池均衡的两大均衡方法主动均衡与被动均衡，分析了电池均衡电 路的拓扑结构和均衡控制策略。最后，设计了电池组充放电控制回路，在此基础上设计 了基于被动均衡方法的电阻式均衡电路和基于主动均衡方法的电容式均衡电路，并使用 Simulink 进行了仿真实验。通过不同电路仿真结果的分析和比较，得出不同均衡电路与 均衡策略对于电池组使用过程有不同影响的结论。77754

毕业论文关键词 动力电池 主动均衡 被动均衡 均衡策略

毕 业 设 计 说 明 书 外 文 摘 要

Title The eletric car battery equalization technology research

Abstract Electric vehicle power battery balancing technology for the extension of electric bars has important significance。Battery equalization technology can effectively reduce the inconsistency of each monomer battery in the power battery groupe, raise the utilization ratio of the capacity of the battery cell。In this paper, the characteristics of the power battery for electric vehicle are analyzed, and the corresponding equilibrium variables are selected。According to the principle of battery equalization, the topology structure and the control strategy of the battery equalization circuit are analyzed by comparing the two methods of the battery equalization。Finally, design the battery charge and discharge control circuit,on the basiss of this design the resistance balanced circuit based on passive equalization method and capacitance balanced circuit based on active equalization method, and the simulation experiment was made use of simulink。By means of the analysis and comparison for different circuit simulation results, wo can draw a conclusion that different equalization circuit and the equilibrium strategies for the battery pack using process has different influence conclusion。

Keywords Power Battery，Active Equalization，Passive Equalization Balance Strategy

本科毕业设计说明书 第 I 页

目 次

1 引言 1

1。1 电动汽车与动力电池概述 1

1。2 电池均衡技术的必要性 2

1。3 电池均衡技术的研究现状 3

1。4 本章小结 3

2 动力电池不一致性与充放电特性 4

2。1 电池不一致性产生 4

2。2 电池不一致性的主要表现 4

2。3 本章小结 7

3 电池均衡控制策略与拓扑 8

3。1 电池均衡目标与均衡控制策略 8

3。2