混合动力汽车电池组双介质冷却管理系统设计
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摘要
随着混合动力电动汽车数量的不断增加,电池的循环寿命和使用安全性越来越受到重视。为降低大负荷工况下放热对电池性能的影响,需要改进电池组冷却系统。基于锂离子电池的生热原理模型,进行了风冷、液冷双介质方式下散热器的设计及仿真,计算和分析结果表明:冷却介质流速和电池组的放电倍率是影响混合动力汽车电池热性能的重要因素。根据工况调整冷却介质的比例,使电池组在最低能耗下,将最大温升和最大温差控制在合理范围内。
With the increase of hybrid electric vehicles, the cycle life and safety of battery is becoming more and more important. The design of cooling system of battery pack needs to be improved in order to reduce the heat effect of the battery under heavy load condition. Based on the heating principle of lithium-ion battery, radiator design and simulation analysis for lithium-ion battery pack with air and liquid cooling double medium system was finished. The results show that the velocity of the fluid and the battery discharge rate are important factors to influence the performances of hybrid car batteries. According to the working condition of the proportion of different cooling medium,it can be guaranteed that the maximum temperature and maximum temperature difference of battery pack will be kept in a reasonable range under the minimum energy consumption.
With the increase of hybrid electric vehicles, the cycle life and safety of battery is becoming more and more important. The design of cooling system of battery pack needs to be improved in order to reduce the heat effect of the battery under heavy load condition. Based on the heating principle of lithium-ion battery, radiator design and simulation analysis for lithium-ion battery pack with air and liquid cooling double medium system was finished. The results show that the velocity of the fluid and the battery discharge rate are important factors to influence the performances of hybrid car batteries. According to the working condition of the proportion of different cooling medium,it can be guaranteed that the maximum temperature and maximum temperature difference of battery pack will be kept in a reasonable range under the minimum energy consumption.
引文
[1]张上安.混合动力车用锂电池组液体冷却散热机理研究[D].长沙:湖南大学,2013.
[2]王文,夏保佳.混合动力汽车镍氢电池组通风结构优化分析[J].汽车工程,2010, 32(3):204-208.
[3]钱舜田.电动汽车动力锂电池散热结构设计与冷却系统仿真[D].杭州:浙江工业大学,2013.
[4]吴忠杰,张国庆.混合动力车用镍氢电池的液体冷却系统[J].广东工业大学学报,2008, 25(4):28-31.
[5] PAUL N, DENNIS D, KHALIL A, et al. Modeling thermal management of lithium-ion PNGV batteries[J]. Journal of Power Sources,2002, 110:349-356.
[6] GUO G, LONG B, CHENG B, et al. Three-dimensional thermal finite element modeling of lithium-ion battery in thermal abuse application[J].Journal of Power Sources, 2010, 195(8):2393-2398.
[2]王文,夏保佳.混合动力汽车镍氢电池组通风结构优化分析[J].汽车工程,2010, 32(3):204-208.
[3]钱舜田.电动汽车动力锂电池散热结构设计与冷却系统仿真[D].杭州:浙江工业大学,2013.
[4]吴忠杰,张国庆.混合动力车用镍氢电池的液体冷却系统[J].广东工业大学学报,2008, 25(4):28-31.
[5] PAUL N, DENNIS D, KHALIL A, et al. Modeling thermal management of lithium-ion PNGV batteries[J]. Journal of Power Sources,2002, 110:349-356.
[6] GUO G, LONG B, CHENG B, et al. Three-dimensional thermal finite element modeling of lithium-ion battery in thermal abuse application[J].Journal of Power Sources, 2010, 195(8):2393-2398.