摘要
电动飞机已成为航空飞行器的重要发展方向。电动飞机配置的电池组能量密度更高,工作时功率大产热多,如果热管理不善,容易使电池组自燃,且飞行过程难以紧急避险,所以必须重视电动飞机电池组热管理。提出在常规Z型风冷系统中增设微通道冷板的方案,对电动飞机电池组进行散热;对电池组工作过程进行仿真,计算各种环境和使用条件下电池组生热及散热功率,以便采取措施更有效地实施电池组热管理。仿真计算了电动飞机滑跑、加速和爬升段飞行时的无风条件、常规Z型风冷和增设微通道冷板新型Z型风冷的生热和散热功率。结果表明:增设微通道冷板新型Z型风冷散热效果最好,与常规Z型风冷比较,电池组最高温度下降约7℃,温差下降约6℃。
Electric aircraft has become an important direction for the development of aviation.The energy density of battery packs used in electric aircraft is higher,resulting in greater power and heat generation during operation.If the thermal management is inadequate,it can lead to battery pack combustion,posing a greater threat as emergency avoidance during flight becomes more difficult.Therefore,it is crucial to prioritize thermal management of electric aircraft battery packs.In this paper,a solution is proposed to enhance the heat dissipation of the battery packs in electric aircraft by adding microchannel cold plates to the conventional Z-type air cooling system.The working process of the battery packs is simulated,and the heat generation and dissipation power of the battery packs under various environmental and operating conditions are calculated.This allows for the implementation of more effective measures for battery pack thermal management.The simulation calculates the heat generation and dissipation power under windless conditions,conventional Z-type air cooling,and the newly proposed Z-type air cooling system with added microchannel cold plates during taxiing,acceleration,and climb phases of electric aircraft flight.The results show that the newly proposed Z-type air cooling system with added microchannel cold plates provides the best heat dissipa‐tion performance.Compared to the conventional Z-type air cooling system,the battery pack's highest temperature decreases by approximately 7°C,and the temperature difference decreases by approxi‐mately 6°C.
作者
王邱宇
徐斌
施文奎
李晓龙
WANG Qiuyu;XU Bin;SHI Wenkui;LI Xiaolong(School of Manufacturing Science and Engineering,Southwest University of Science and Technology,Mianyang Sichuan 621000,China;Computational Aerodynamics Institute,China Aerodynamics Research and Development Center,Mianyang Sichuan 621000,China;State Key Laboratory of Aerodynamics,China Aerodynamics Research and Development Center,Mianyang Sichuan 621000,China)
出处
《电源技术》
CAS
北大核心
2024年第9期1755-1763,共9页
Chinese Journal of Power Sources
关键词
电池热管理
电动飞机
风冷散热
微通道
数值模拟
battery thermal management
electric aircraft
air cooling heat dissipation
microchan‐nel
numerical simulation
