Zero-Current Switching Switched-Capacitor Zero-Voltage-Gap Automatic Equalization System for Series Battery String
Zero-Current Switching Switched-Capacitor Zero-Voltage-Gap Automatic Equalization System for Series Battery String
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DOI：
10.1109/tpel.2011.2181868
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发表时间：
2012-07
影响因子：
6.7
通讯作者：
Yuanmao Ye;K. W. E. Cheng;Y. Yeung
中科院分区：
文献类型：
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作者：
Yuanmao Ye;K. W. E. Cheng;Y. Yeung
提出了一种基于准谐振开关电容变换器的串联电池组或超级电容组自动均衡系统。它实现了电池之间的零电压间隙，并允许串联电池系统或超级电容器系统中的最大能量回收。它既继承了传统的开关电容式电池均衡系统的优点，又克服了导通损耗、开关损耗和电池间电压差有限的缺点。所有开关均为MOSFET，仅由一对互补信号以同步触发模式控制，谐振回路在充电和放电两种状态之间交替工作。实现了开关管的零电流开关和零电压间隙。不同的谐振回路设计可以满足不同平衡时间的需要，以满足不同储能装置的需求。实验结果表明，该系统的效率高达98%以上。该系统非常适用于电池管理系统中的平衡。
The series battery string or supercapacitor string automatic equalization system based on quasi-resonant switched-capacitor converter is presented in this paper. It realizes the zero-voltage gap between cells and allows maximum energy recovery in a series battery system or supercapacitor system. It not only inherits the advantage of conventional switched-capacitor battery cell balancing system, but also overcomes the drawback of conduction loss, switching loss, and finite voltage difference among battery cells. All switches are MOSFET and controlled by just a pair of complementary signals in synchronous trigger pattern and the resonant tanks operate alternatively between the two states of charging and discharging. Zero-current switching and zero-voltage gap are achieved in this paper. Different resonant tank designs can meet the needs of different balancing time to meet the needs of different energy storage devices. Experimental results indicate that the efficiency of the system is high exceeding 98%. The system is very suitable for balancing used in battery management system.