电动汽车锂离子电池荷电状态估计方法研究
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摘要
锂离子电池的寿命长,放电电压高,具有无记忆效应和安全性等优点。文章以锂离子电池研究成果为根基,分析其动力学特性,以在线方式估算其荷电状态,对模型进行比较研究。特别值得注意的是,通过估算锂离子电池荷电状态,对开路电压法、安时积分法等方法对比分析,对这些方法有了更加深刻的认识,最后在综合分析初始SOC值修正、安时积分法的基础上得到了更加科学的方法。
Lithium ion battery has many advantages,such as long life,high discharge voltage,no memory effect and safety.Based on the research results of Lithium ion battery,the dynamic characteristics of lithium ion battery were analyzed.The state of charge was estimated online,and the model was compared.It is noteworthy that we should estimate the nuclear power status of Lithium ion battery,and compare the open circuit voltage method and the ampere hour integration method,then there was a more profound understanding of these methods.Finally,a more scientific method was obtained based on the comprehensive analysis of the initial SOC value correction and the current time integral method.
Lithium ion battery has many advantages,such as long life,high discharge voltage,no memory effect and safety.Based on the research results of Lithium ion battery,the dynamic characteristics of lithium ion battery were analyzed.The state of charge was estimated online,and the model was compared.It is noteworthy that we should estimate the nuclear power status of Lithium ion battery,and compare the open circuit voltage method and the ampere hour integration method,then there was a more profound understanding of these methods.Finally,a more scientific method was obtained based on the comprehensive analysis of the initial SOC value correction and the current time integral method.
引文
[1]高安同,张金,陈荣刚,等.锂离子电池荷电状态估算及剩余寿命预测[J].电源技术,2014,38(6):1066-1068.
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[3]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(自然科学版),2012,(7):1001-1006.
[4]赵淑红,吴锋,王子冬.磷酸铁锂动力电池工况循环性能研究[J].电子元件与材料,2009,28(11):43-47.
[5]时玮,姜久春,李索宇,等.磷酸铁锂电池SOC估算方法研究[J].电子测量与仪器学报,2010,24(8):769-774.
[2]宋永华,阳岳希,胡泽春.电动汽车电池的现状及发展趋势[J].电网技术,2011,20(4):382-385.
[3]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(自然科学版),2012,(7):1001-1006.
[4]赵淑红,吴锋,王子冬.磷酸铁锂动力电池工况循环性能研究[J].电子元件与材料,2009,28(11):43-47.
[5]时玮,姜久春,李索宇,等.磷酸铁锂电池SOC估算方法研究[J].电子测量与仪器学报,2010,24(8):769-774.