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首页> 外文期刊>Research journal of applied science, engineering and technology >Temperature Field Analysis and Thermal Dissipation Structure Optimization of Lithium-ion Battery Pack in PEVs
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Temperature Field Analysis and Thermal Dissipation Structure Optimization of Lithium-ion Battery Pack in PEVs

机译：电动汽车中锂离子电池组温度场分析及散热结构优化

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摘要

Aimed to achieve good thermal stability of lithium batteries in electric vehicles under the conditions of high-power. This study established a three-dimensional, transient heat dissipation model for Lithium-ion battery package in the three-dimensional Cartesian coordinate system based on theoretical knowledge of thermodynamics and heat transfer. With the help of the numerical simulation theoretical of CFD, the flow and temperature field of force air cooling Lithium-ion battery pack was simulated with the heat source obtained from dynamic performance simulations of Pure Electric Vehicles (PEVs) under 15% climbing conditions. For the issues of high temperature rise and large temperature difference, optimal programs to improve the cooling effect of Lithium-ion battery pack were proposed. Simulation results indicate that the optimal measures make heat dissipation well and temperature distribution uniform, which satisfies the application requirement in PEVs.
机译：旨在在大功率条件下实现电动汽车中锂电池的良好热稳定性。本研究基于热力学和热传递的理论知识，建立了三维直角坐标系下锂离子电池组的三维瞬态散热模型。借助于CFD的数值模拟理论，利用纯电动汽车（PEV）在15％的爬升条件下的动态性能仿真获得的热源，对强制风冷锂离子电池组的流场和温度场进行了仿真。针对温升高，温差大的问题，提出了改善锂离子电池组散热效果的最佳方案。仿真结果表明，采取的最佳措施使散热良好，温度分布均匀，满足了电动汽车的应用要求。

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