电压恢复特性对车用动力电池充电特性影响
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摘要
针对车用动力电池,研究了其充放电过程中的电压恢复特性,对电池组和电池单体进行了充电实验。分析了电压恢复特性对电池充电特性的影响,提出了电压容量密度作为电池能量状态估算的指标。发现了动力电池组在恒压充电阶段单体电池电压变化的异常现象。分析结果表明,电压容量密度更能准确表征电池能量状态,在电池组恒压充电阶段应对单体进行充电保护。
For traction battery,the voltage recovery characteristics during charging and discharging are studied. A charging experiment is conducted on battery pack and cells respectively,and the influence of voltage recovery effect on charging characteristics is analyzed. Voltage capacity density is defined to show the energy states of battery. The abnormal phenomenon of cell's voltage variation at constant voltage charging stage is pointed out. The results show that voltage capacity density can accurately show the energy states and the charging protection measures for cells must be adopted at constant voltage charging stage.
For traction battery,the voltage recovery characteristics during charging and discharging are studied. A charging experiment is conducted on battery pack and cells respectively,and the influence of voltage recovery effect on charging characteristics is analyzed. Voltage capacity density is defined to show the energy states of battery. The abnormal phenomenon of cell's voltage variation at constant voltage charging stage is pointed out. The results show that voltage capacity density can accurately show the energy states and the charging protection measures for cells must be adopted at constant voltage charging stage.
引文
[1]连静,郑宁安,周雅夫,等.基于电池荷电状态和行驶工况辨识的电动汽车续驶里程估算[J].科学技术与工程,2016,16(13):113-117.
[2]王震坡,孙逢春,林程.不一致性对动力电池组使用寿命影响的分析[J].北京理工大学学报,2006,26(7):577-580.
[3]Zhang Y,Song W,Lin S,et al.A critical review on state of charge of batteries[J].Journal of Renewable&Sustainable Energy,2013,5(2):93-110.
[4]Gallardo Lozano J,Romero Cadaval E,Milanes Montero M I,et al.Battery equalization active methods[J].Journal of Power Sources,2014,246(3):934-949.
[5]Zhang Hong,Li Zhao,Yong Chen.A lossy counting-based state of charge estimation method and its application to electric vehicles[J].Energies,2015,8(12):13811-13828.
[6]胡银全,刘和平,刘平,等.电动汽车用磷酸铁锂电池充电特性的分析[J].汽车工程,2013,35(4):293-297.
[7]Cheng Lin,Hao Mu,Li Zhao,et al.A new datastream-mining-based battery equalization method[J].Energies,2015,8(7):6543-6565.
[8]李礼夫,张东羽.磷酸铁锂电池充电后静置的电压预测方法[J].科学技术与工程,2017,17(5):109-113.
[9]高飞,杨凯,惠东,等.储能用磷酸铁锂电池循环寿命的能量分析[J].中国电机工程学报,2013,33(5):41-45.
[10]中华人民共和国国家质量监督检验检疫总局,中国国家标准化管理委员会.电动汽车用动力蓄电池电性能要求及试验方法:GB/T 31486—2015[S].北京:中国标准出版社,2015.
[11]Bruen T,Marco J.Modelling and experimental evaluation of parallel connected lithium ion cells for an electric vehicle battery system[J].Journal of Power Sources,2016,310:91-101.
[12]侯秋梦,龚国庆,汪锋,等.基于加速度控制的复合电源能量管理策略[J].北京信息科技大学学报,2017,32(02):60-65.
[2]王震坡,孙逢春,林程.不一致性对动力电池组使用寿命影响的分析[J].北京理工大学学报,2006,26(7):577-580.
[3]Zhang Y,Song W,Lin S,et al.A critical review on state of charge of batteries[J].Journal of Renewable&Sustainable Energy,2013,5(2):93-110.
[4]Gallardo Lozano J,Romero Cadaval E,Milanes Montero M I,et al.Battery equalization active methods[J].Journal of Power Sources,2014,246(3):934-949.
[5]Zhang Hong,Li Zhao,Yong Chen.A lossy counting-based state of charge estimation method and its application to electric vehicles[J].Energies,2015,8(12):13811-13828.
[6]胡银全,刘和平,刘平,等.电动汽车用磷酸铁锂电池充电特性的分析[J].汽车工程,2013,35(4):293-297.
[7]Cheng Lin,Hao Mu,Li Zhao,et al.A new datastream-mining-based battery equalization method[J].Energies,2015,8(7):6543-6565.
[8]李礼夫,张东羽.磷酸铁锂电池充电后静置的电压预测方法[J].科学技术与工程,2017,17(5):109-113.
[9]高飞,杨凯,惠东,等.储能用磷酸铁锂电池循环寿命的能量分析[J].中国电机工程学报,2013,33(5):41-45.
[10]中华人民共和国国家质量监督检验检疫总局,中国国家标准化管理委员会.电动汽车用动力蓄电池电性能要求及试验方法:GB/T 31486—2015[S].北京:中国标准出版社,2015.
[11]Bruen T,Marco J.Modelling and experimental evaluation of parallel connected lithium ion cells for an electric vehicle battery system[J].Journal of Power Sources,2016,310:91-101.
[12]侯秋梦,龚国庆,汪锋,等.基于加速度控制的复合电源能量管理策略[J].北京信息科技大学学报,2017,32(02):60-65.