摘要：

在串联锂电池组能量均衡控制算法的基础上，提出一种新的能实现锂电池组能量均衡的控制方案。介绍模糊-PI复合控制器，包括控制器输入输出、规则库和PI参数的设计，结合模糊控制不依赖数学模型及其快速响应性、PI控制无静差的优点，改进电池模糊控制均衡的效率和精度。实验结果表明，该方案能改善模糊控制在电池充放电能量均衡过程中控制精度较差的问题，实现较为高效的均衡。

关键词: 锂电池组, 能量均衡, 均衡效率, 模糊-PI控制, 均衡精度

Abstract:

According to lithium battery pack equalization control algorithm, this paper proposes a novel control scheme for lithium battery pack that can realize energy equalization. The design of fuzzy-PI is represented in detail, including the controller’s inputs and outputs, fuzzy logic rules base and the set of PI parameters. PI control is introduced into fuzzy control to form fuzzy-PI control, which integrates the advantage including fast response of fuzzy-PI, having no steady-state static error of PI and so on, the equalization efficiency and precision are improved. Experimental results show that this scheme can improve the problem that the control precision of fuzzy control application is poor in battery charging and discharging energy equilibrium process, and realize more efficient equalization.

Key words: lithium battery pack, energy equalization, equalization efficiency, fuzzy-PI control, equalization accuracy

中图分类号: 

• TP301.6