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基于Cuk斩波电路的电池组均衡方法
引用本文:刘征宇,武银行,李鹏飞,黎盼春.基于Cuk斩波电路的电池组均衡方法[J].仪器仪表学报,2019,40(2):233-241.
作者姓名:刘征宇  武银行  李鹏飞  黎盼春
作者单位:合肥工业大学机械工程学院;安徽云翼航空技术有限公司
基金项目:安徽省自然科学基金(1808085MF200)、工业和信息化部民用飞机专项科研(MJ 2017 D 26)项目资助
摘    要:电池均衡技术可有效减小锂电池组串联使用过程中的不一致性。基于此提出了一种使用Cuk斩波电路作为均衡器的新型均衡拓扑,该均衡拓扑使用双层开关选择均衡单体电池连接到Cuk均衡器,同时该均衡器采用零电压导通技术。均衡方案使用单层均衡器实现模组内部单体之间以及不同模组的单体之间均衡能量的同时转移。该均衡方案具有均衡电流连续且波动较小、均衡能量转移效率高等优点。对12节串联的锂电池组进行了充放电均衡实验以及静置均衡对比试验,实验结果表明,该方案可以有效减小单体电池间的不一致性,提升电池组的整体性能。

关 键 词:电池均衡  Cuk斩波电路  零电压导通  双层开关

Battery pack equalization method based on Cuk chopper circuit
Liu Zhengyu,Wu Yinhang,Li Pengfei,Li Panchun.Battery pack equalization method based on Cuk chopper circuit[J].Chinese Journal of Scientific Instrument,2019,40(2):233-241.
Authors:Liu Zhengyu  Wu Yinhang  Li Pengfei  Li Panchun
Affiliation:School of Mechanical Engineering, Hefei University of Technology, Hefei 230009, China;Anhui Yunyi Aviation Technology Co., Ltd, Hefei 230009, China
Abstract:Battery equalization technology can effectively reduce the inconsistency in the process of using the series connected lithium battery packs. A new equalization topology is proposed using Cuk chopper circuit as the equalizer. The equalization topology uses a two layer switch to select the single equalization cells to connect to the Cuk equalization converter. At the same time, the Cuk equalization converter adopts zero voltage conduction technology. The equalization scheme uses a single layer equalizer to achieve simultaneous transfer of the equalization energy among the single cells in the module and the single cells in different modules. The equalization scheme has the advantages of continuous equalization current, small fluctuation and high equalization energy transfer efficiency. The charge discharge equalization experiment and static equalization comparison experiment on a battery pack with 12 series lithium batteries were performed. The experiment results show that this scheme can effectively reduce the inconsistency among single cells and improve the overall performance of the battery pack.
Keywords:battery equalization  Cuk chopper circuit  zero voltage conduction  two layer switch
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