“Time Shared Flyback Converter” Based Regenerative Cell Balancing Technique for Series Connected Li-Ion Battery Strings
“Time Shared Flyback Converter” Based Regenerative Cell Balancing Technique for Series Connected Li-Ion Battery Strings
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DOI：
10.1109/tpel.2013.2257861
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发表时间：
2013-04
影响因子：
6.7
通讯作者：
A. Imtiaz;Faisal Khan
中科院分区：
文献类型：
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作者：
A. Imtiaz;Faisal Khan
提出了一种适用于未来插电式混合动力汽车(PHEV)或可再生能源储存的电池电压均衡电路。与文献中发现的传统拓扑相比，这种拓扑具有更少的无源元件，因此，它可以降低实现复杂性。该电路基于分时反激转换器，可以在一个串中使用任意数量的串联单元，而不会出现任何明显的问题，从而确保良好的模块化架构。模块中的每个单元在由低功率微控制器分配的其分配的时隙内共享单个转换器。此外，动态分配时隙可以实现更快的电池平衡，并且该电路以再生的方式在电池之间动态分配耗尽的电荷。文中给出了该拓扑结构的工作原理和设计步骤。根据所提出的拓扑结构，搭建了四芯锂离子电池平衡电路的样机，并给出了测试结果。
A cell voltage equalizer circuit for future plug-in hybrid electric vehicles (PHEV) or renewable energy storage is proposed in this paper. This topology has fewer passive components compared to the conventional topologies found in the literature, and therefore, it could reduce implementation complexity. This circuit is based on a time shared flyback converter, and any number of series connected cells in a string could be used without any apparent issues ensuring good modular architecture. Each cell in a module shares a single converter during its allocated time slot allocated by a low-power microcontroller. In addition, dynamic allocation of time slots is possible to achieve a faster cell balancing, and the circuit dynamically distributes depleted charge among the cells in a regenerative fashion. The operating principles and design procedures of the proposed topology have been presented in the paper. The prototype of a four-cell lithium-ion battery balancer circuit with the proposed topology has been constructed, and the test results have been included.