动态切换控制策略的电动汽车空冷电池热管理系统优化研究

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中图分类号：TB9;U469.72 文献标志码：A文章编号：1674-5124（2026）02-0153-09

Abstract： Air-cooled battery thermal management systems （BTMS） are stillwidely used in economical electric vehicles due to their low cost and high stability. However， these systems have disadvantages such as large temperature rise，large temperature difference within the battery pack，and high energy consumption， which need to be optimized.In this paper，the thermal characteristics of a 18650 power batteryare tested through internal resistance test experiments and temperature rise experiments，and a heating model is established based on the experimental data. Then， the air-cooled BTMS of the J-type battery pack was optimized by computational fluid dynamics simulation.The optimized system uses a dynamic control strategy based on the opening and closing time and frequency of the two valves to enhance heat disipation and improve thermal management of the batery pack.The results show that the optimized BTMS and switching control strategies significantly improve the heat dissipation performance. At the maximum discharge rate， the dynamic switching control strategy reduces the maximum temperature of BTMS by 3.42K ， the maximum temperature difference by 6.44K ，and the power consumption of the fan by 15.23W .This system provides a certain reference for the effective thermal management of electric vehicles at different discharge rates.

Keywords：battry thermal management; thermal performance testing; electrothermal coupling; dynamic control strate

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我国政府在2020年承诺，2030年达到碳排放峰值，2060年实现碳中和[1]。（剩余11322字）