Numerical Study of Heat Transfer Enhancement in the Electric Vehicle Battery via Vortex‑Induced Agitator  

作　　者：Yubo Lian Yinsheng Liao Jianjian Liu Zhiming Hu Haolun Xu 

机构地区：[1]BYD Auto Industry Company Limited,518118 Shenzhen,China

出　　处：《Automotive Innovation》2023年第2期244-255,共12页汽车创新工程（英文）

摘　　要：Convective heat transfer plays an important role in the development of a high-performance battery cell.Electric vehicles carry a large amount of the battery cells to reach a longer range of endurance mileage.Thermal diffusion around the battery cells can be considered as obstacles to improve the convective heat transfer coefficient.In this paper,a novel agitator taking advantage of strong vortices is designed to disrupt the thermal boundary layer around the battery cells,thereby improving the fluid mixing for enhanced convective heat transfer.A fluid–structure interaction algorithm is developed to simulate the convective heat transfer rate at various flapping motion.Under the comparison with clean channel,the vortex-induced vibra-tion by the agitated beam can increase the average Nusselt number by 119.59%.This research can be applied to optimize the thermal-structure design inside the electric vehicle battery.

关 键 词：Electric vehicle battery Thermal management Fluid–structure interaction Air cooling 

分 类 号：U469.72[机械工程—车辆工程]