基于开关电感电池均衡器的CCM软开关实现算法  

CCM Soft-switching Implementation Algorithm for Battery Equalizer Based on Switched Inductor

作　　者：高彬桓 胡勇 刘爱忠 刘俊 刘宇涵 阚加荣[3] GAO Binhuan;HU Yong;LIU Aizhong;LIU Jun;LIU Yuhan;KAN Jiarong(School of Electrical and Electronic Engineering,North China Electric Power University(Beijing),Beijing 102206,China;Smart Energy Branch of Shandong Luruan Digital Technology Co.,Ltd,Ji’nan 250101,China;School of Electrical Engineering,Yancheng Institute of Technology,Yancheng 224051,China)

机构地区：[1]华北电力大学(北京)电气与电子工程学院,北京102206 [2]山东鲁软数字科技智慧能源分公司,济南250101 [3]盐城工学院电气工程学院,盐城224051

出　　处：《电源学报》2024年第5期251-259,共9页Journal of Power Supply

基　　金：国家自然科学基金资助项目(51577164);江苏省“青蓝工程”中青年学术带头人培养对象资助项目;江苏省第五期“333工程”资助项目~~。

摘　　要：针对开关电感的锂离子电池均衡器在小功率便携式用电设备中仍有很强的实用价值,但传统控制策略控制的均衡器中开关管为硬开关的问题,提出1种基于开关电感锂电池均衡器电流连续运行模式下的软开关实现算法。分析均衡器电感电流电池单体充、放电电流大小的决定因素,由此提出均衡器中开关管的软开关实现算法并分析了该算法的控制精度。通过检测电池单体的电压与充电电流的变化率可实时得到电池单体的等效阻抗与开路电压,进一步保证了算法的精度。实验结果表明,所提软开关控制算法性能良好。The lithium-ion battery equalizer based on switched inductor is still of strong practical value in lowpower portable electrical equipment.However,the switching devices in the equalizer operate in a hard-switching state under traditional control strategies.A soft-switching implementation algorithm for battery equalizer based on switched inductor in continuous current mode is proposed.The determinants of the inductor current of the equalizer and the charging and discharging current of a battery cell are analyzed.Then,a soft-switching implementation algorithm for the switching devices in the equalizer is proposed,and its control accuracy is analyzed.The equivalent impedance and opencircuit voltage of the battery cell can be obtained in real time by detecting the change rate of battery cell voltage and charging current,which further ensures the accuracy of the algorithm.Experimental results show that the proposed softswitching control algorithm has a good performance.

关 键 词：锂离子电池 均衡器 开关电感 电流连续模式 软开关算法 

分 类 号：TM46[电气工程—电器]