动车组辅助回路蓄电池均衡方法及均衡策略研究
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摘要
由于制造工艺和使用环境等原因,蓄电池容量、电压、内阻等会存在单体不一致性,是直接影响蓄电池组安全性和循环寿命的因素。为减小动车组辅助回路蓄电池组中单体电池不一致性,提高蓄电池安全性,延长其使用寿命,文章在对蓄电池单体不一致性分析的基础上,结合动车组辅助回路特点,提出了一种适合动车组辅助回路蓄电池的均衡方法与均衡策略。实验结果表明,该均衡方法与均衡策略能有效减小单体电池不一致性,提高蓄电池组的安全性,延长使用寿命。
There is inconsistency in capacity, voltage and resistance of battery cells due to manufacturing process, working environment and etc, which will directly influence battery pack cycle life and safety. In order to reduce the inconsistency of the battery cells in the auxiliary circuit of EMU, improve the battery pack safety and extend the cycle life of battery cells, this paper presents an equalization method and equalization strategy suitable for battery pack in auxiliary circuit of the EMU, on basis of analyzing the battery inconsistency and characteristics of the auxiliary circuit. The experiment results show that the equalization method and equalization strategy can validly reduce the inconsistency of the battery cells, thereby, improve the battery pack safety and extend the cycle life of battery cells.
There is inconsistency in capacity, voltage and resistance of battery cells due to manufacturing process, working environment and etc, which will directly influence battery pack cycle life and safety. In order to reduce the inconsistency of the battery cells in the auxiliary circuit of EMU, improve the battery pack safety and extend the cycle life of battery cells, this paper presents an equalization method and equalization strategy suitable for battery pack in auxiliary circuit of the EMU, on basis of analyzing the battery inconsistency and characteristics of the auxiliary circuit. The experiment results show that the equalization method and equalization strategy can validly reduce the inconsistency of the battery cells, thereby, improve the battery pack safety and extend the cycle life of battery cells.
引文
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[7]于延尊,牛步钊,房新凯,等.动车组蓄电池单节状态监测装置研制[J].工业控制计算机,2017,30(2):115-119.
[8]张树森,刘泽涛,陈丽雯.CRH3型动车组蓄电池欠压保护的设计与实现[J].高速动车组技术,2013,13(2):9-11.
[9]Zheng Y,Ouyang M,Lu L,et al.On-line equalization for lithium-ion battery packs based on charging cell voltages﹕Part 1.Equalization based on remaining charging capacity estimation[J].Journal of Power Sources.2014,247(2):676-686.
[10]郭宏榆,姜久春,王吉森,等.功率型锂离子动力电池的内阻特性[J].北京交通大学学报(自然科学版),2011,35(5):119-123.
[11]Xueqing Y,Zhao L.The Study of Charge Equalizaiton Control Strategy Based on Resistor Shunt Circuit[J].Energy and Power Engineering,2014.
[12]White R E,Walton C W,Burney H S,et al.Predicting shunt currents in stacks of bipolar plate cells[J].Journal of the Electrochemical Society,1986,133(3):485-492.
[2]时玮,姜久春,张维戈,等.磷酸铁锂电池并联充放电特性研究[J].高技术通讯,2012(2):205-210.
[3]冯飞,宋凯,逯仁贵,等.磷酸铁锂电池组均衡控制策略及荷电状态估计算法[J].电工技术学报,2015,30(1):22-29.
[4]鲁文凡,吕帅帅,倪红军,等.动力电池组均衡控制系统的研究进展[J].电源技术,2017(41):161-164.
[5]姜久春,牛利勇,张欣,等.混合动力汽车电池管理系统的研究[J].高技术通讯,2004(6):75-77.
[6]李腾,林成涛,陈全世.磷酸铁锂电池组成组过程的不一致性分析[J].清华大学学报,2012,52(7):1001-1006.
[7]于延尊,牛步钊,房新凯,等.动车组蓄电池单节状态监测装置研制[J].工业控制计算机,2017,30(2):115-119.
[8]张树森,刘泽涛,陈丽雯.CRH3型动车组蓄电池欠压保护的设计与实现[J].高速动车组技术,2013,13(2):9-11.
[9]Zheng Y,Ouyang M,Lu L,et al.On-line equalization for lithium-ion battery packs based on charging cell voltages﹕Part 1.Equalization based on remaining charging capacity estimation[J].Journal of Power Sources.2014,247(2):676-686.
[10]郭宏榆,姜久春,王吉森,等.功率型锂离子动力电池的内阻特性[J].北京交通大学学报(自然科学版),2011,35(5):119-123.
[11]Xueqing Y,Zhao L.The Study of Charge Equalizaiton Control Strategy Based on Resistor Shunt Circuit[J].Energy and Power Engineering,2014.
[12]White R E,Walton C W,Burney H S,et al.Predicting shunt currents in stacks of bipolar plate cells[J].Journal of the Electrochemical Society,1986,133(3):485-492.