空气冷却系统对学生方程式电动汽车锂离子电池组热管理的实验研究

Sagar Wankhede, Ajay D. Pingale, Atharva Kale
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引用次数: 0

摘要

电动汽车(ev)的日益普及推动了广泛的研究和开发工作,以优化其储能系统的性能和安全性,特别是锂离子电池组。电动汽车电池温度升高的主要原因是在各种操作、行驶和充电条件下的热不稳定性。在学生电动汽车方程式(FSEV)比赛中,效率和可靠性至关重要,有效冷却电池组(BP)至关重要。本研究利用相关系统参数和精确的热建模,通过CFD仿真分析了风冷式热管理系统的冷却性能。系统地调整各种冷却参数,如冷却剂流量、风扇转速和冷却通道几何形状,以评估它们对BP温度分布、热平衡和整体性能的影响。关键指标,包括电池模块内的最高温度和温度分布,用于比较模拟结果,并为未来的应用优化结果。实验验证了最优解的仿真结果。这项研究的结果为设计和改进fsev的LIBPs主动冷却系统提供了有价值的见解。根据模拟结果,所得温度数据的平均方差为4.256%。当风速为17 m·s−1时,BP温度保持在30 ~ 40℃的理想范围内。增强冷却策略可以提高bbp的热稳定性,延长其使用寿命,并降低热失控的风险。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Experimental investigation on thermal management of lithium-ion battery pack for formula student electric vehicle using air-cooling system
The increasing adoption of electric vehicles (EVs) has driven extensive research and development efforts to optimize the performance and safety of their energy-storage systems, particularly lithium-ion battery (LIB) packs. Elevated temperatures in EV batteries primarily result from thermal instability during various operating, traveling, and charging conditions. In formula student electric vehicle (FSEV) competitions, where efficiency and reliability are critical, effective cooling of the battery pack (BP) is essential. This study analyzed the cooling performance of an air-cooled thermal management system using relevant system parameters and precise thermal modeling through CFD simulations. Various cooling parameters, such as coolant flow rate, fan speed, and cooling channel geometry, were systematically adjusted to evaluate their effects on BP temperature distribution, thermal equilibrium, and overall performance. Key metrics, including maximum temperature and temperature distribution within the battery module, were used to compare simulation results and optimize outcomes for future applications. Experiments validated the simulations of the optimal solution. The results of this investigation provide valuable insights for designing and improving active cooling systems for LIBPs in FSEVs. The average variance of the obtained temperature data was 4.256% based on simulation results. At an air velocity of 17 m·s−1, the BP temperature remained within the ideal range of 30–40 °C. Enhanced cooling strategies can improve the thermal stability of bBPs, extend their lifespan, and reduce the risk of thermal runaway.
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CiteScore
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