圆柱形电池组纵向流风冷散热性能仿真
Heat dissipation performance simulation of longitudinal flow air-cooling for cylindrical battery pack
揭琳锋 1李伟 2熊树生3
作者信息
- 1. 扬州工业职业技术学院交通工程学院,江苏 扬州 225000
- 2. 杭州伟生科技有限责任公司,浙江 杭州 310000
- 3. 浙江大学能源工程学院,浙江 杭州 310000
- 折叠
摘要
为提高圆柱形电池组的能量密度,提出密排形式的电池组,研究纵向流风冷对该电池组的散热效果.纵向流冷却的电池组的体积相比横向流方式缩小 9.62%.在多物理场仿真软件中,将集总参数电池模型和流体传热模型相耦合,开展数值仿真,发现:在 4 m/s的风速下,电池温升可控制在 15℃以内;在相同的放电倍率(2.0 C)下,环境温度每提高 10℃,电池温升约增加 1℃;放电倍率每升高 1.0 C,最大温升约增加 10℃,最大温差约增加 4℃.纵向流风冷对圆柱形电池组具有良好的冷却效果,特别是用于对体积和质量有严格要求的应用场景时.
Abstract
In order to improve the energy density of cylindrical battery packs,a compact battery pack is proposed,the heat dissipation effect of longitudinal air-cooling on the battery pack is studied.The volume of the battery pack cooled by longitudinal flow is reduced by 9.62%compared with that by transverse flow.The lumped parameter battery model and the fluid heat transfer model are coupled in the multi-physical field simulation software,the numerical simulation results show that the temperature rise of the battery can be controlled within 15℃with 4 m/s wind speed.With the same discharge rate(2.0 C),the temperature of the battery increases about 1℃with an increase of 10℃of ambient temperature,the maximum temperature increases about 10℃and the maximum temperature difference increases about 4℃with an increase of 1.0 C discharge rate.The longitudinal flow air cooling has a good cooling effect on the cylindrical battery,especially for applications with strict requirements on volume and weight.
关键词
锂离子电池/热管理/模拟仿真/电池组/圆柱形电池/纵向流/风冷Key words
Li-ion battery/thermal management/simulation/battery pack/cylindrical battery/longitudinal flow/air-cooling引用本文复制引用
出版年
2024
国家科技期刊平台
NSTL
万方数据