基于改进型飞渡电容的电池组动态均衡控制方法研究

摘要

为了改善由于电池单体之间差异而导致的电池组在充放电过程中的失衡问题,在对飞渡电容和辅助充电电源均衡方法深入研究的基础上,通过改进储能电路设计,搭建了一种新型电池组管理系统,给出了电池组处于放电和充电两种状态下的均衡控制方法,并将该系统用于胃肠道机器人外部无线接收器进行实验研究.研究结果表明该系统可工作于辅助充电电源均衡和能耗均衡两种模式下,与改进前相比,电池组实际容量及其利用率均提高2倍以上.%In order to improve the unbalancing problem of battery caused by the difference between single cells during the charging and the discharging processes,an improved energy storage circuit and a new type of battery management system were designed based on the study of flying-capacitor and charging power balance method,while at the same time,a balance control method was developed.A test was carried out on the wireless receiver of gastrointestinal robot,showing that the battery management system can work on the type of assisted charging balance as well as the type of energy consumption balance,and has more than twice the actual capacity of the battery pack and its utilization,compared to the previous balanced control method.