摘要
为了确保电动汽车行驶过程中锂离子电池组保持良好的工作性能,基于FLUENT软件对锂电池组在恒流放电下进行了温度场仿真,为了考察电池组不同工况的温升程度,分别建立了不同的整车行驶车速、坡度与电池组温升的关系,为开展电池组热管理提供参考依据,提出了基于温升变化规律的强制风冷电池组散热优化方案,同时通过对电池组不同工作条件下的仿真结果的比较,结果表明优化方案能实现电池组良好的散热,最高温度都控制在最佳工作温度范围内。
For ensuring lithium-ion battery pack good performance while electric vehicle driving , battery pack temperature field was simulated with FLUENT software under constant-current discharge. In order to investigate the battery temperature increasing level, the relationship between different vehicle speed,slope and battery temperature increasing was set up respectively. For providing reference to battery thermal management, the optimization scheme of battery forced air cooling based on temperature rising change law was proposed. The simulation results of batteries of different working conditions was compared at the same time, the results show that optimization scheme can realize good heat dissipation of the battery pack and highest temperature was controlled in the optimal operating temperature range.
出处
《机械设计与制造》
北大核心
2017年第10期55-59,共5页
Machinery Design & Manufacture
基金
国家自然科学基金(51505086)
关键词
电动汽车
锂电池组
FLUENT
恒流放电
散热优化
行驶工况
Electric Vehicle
Lithiun-Ion Battery Pack
FLUENT
Constant-Current Discharge
Thermal Optimization
Driving Cycle
