High-Efficiency Digitally Controlled Charge Equalizer for Series-Connected Cells Based on Switching Converter and Super-Capacitor
High-Efficiency Digitally Controlled Charge Equalizer for Series-Connected Cells Based on Switching Converter and Super-Capacitor
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DOI：
10.1109/tii.2012.2223479
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发表时间：
2013-05
影响因子：
12.3
通讯作者：
F. Baronti;G. Fantechi;R. Roncella;R. Saletti
中科院分区：
文献类型：
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作者：
F. Baronti;G. Fantechi;R. Roncella;R. Saletti
存储在串联连接的锂电池中的电荷需要在串联的元件之间很好地均衡。我们在这里提出了一种创新的锂电池单元到单元的有源均衡器，能够使用超级电容器作为能量罐在串联连接的单元之间移动电荷。该系统暂时将从超级电容器中的电池中汲取的电荷存储，然后将电荷移动到另一个电池中，而不会像被动均衡那样浪费能量。该系统采用了数字控制开关转换器的架构进行了比较，与最先进的，然后充分调查，连同在其设计中使用的方法。通过介绍和讨论实验室测试的实验结果来描述该系统的性能。该系统最具创新性和吸引力的方面是其非常高的效率，超过90%。
The charge stored in series-connected lithium batteries needs to be well equalized between the elements of the series. We present here an innovative lithium-battery cell-to-cell active equalizer capable of moving charge between series-connected cells using a super-capacitor as an energy tank. The system temporarily stores the charge drawn from a cell in the super-capacitor, then the charge is moved into another cell without wasting energy as it happens in passive equalization. The architecture of the system which employs a digitally-controlled switching converter is compared with the state of the art, then fully investigated, together with the methodology used in its design. The performance of the system is described by presenting and discussing the experimental results of laboratory tests. The most innovative and attractive aspect of the proposed system is its very high efficiency, which is over 90%.