【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。更多还原

【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.更多还原