基于液态金属冷却的电池液冷方案设计及参数多目标优化OA

[Objective]To address the heat generation issue of lithium batteries under high-rate discharge,a liquid cooling scheme based on liquid metal was designed,aiming to enhance thermal performance and system stability through multi-objective optimization.[Methods]A single-inlet double-outlet cooling loop using gallium-based liquid metalwas proposed.Numerical simulations via Fluent were conducted to analyze the effects of coolant velocity,channelheight,branch width increment,and inclination angle on thermal performance.Orthogonal experiments and the NSGA-II multi-objective genetic algorithm were employed for parameter screening and optimization.[Results]The optimalparameters were determined as coolant velocity 0.42 m/s,branch width increment 0.13 mm,inclination angle 87.38°,and channel height 5.76 mm.The optimized system achieved a maximum temperature of 312.66 K,temperature difference of 11.66 K,and pressure drop of 0.712 kPa.Compared to the initial design,the maximum temperature and temperature difference decreased by 0.53%and 8.04%,respectively,with a slight increase in pressure drop.[Conclusion]Liquid metal cooling significantly improves heat dissipation efficiency,with velocity and channel height being dominant factors.The NSGA-II algorithm effectively balances thermal performance and pressure drop,offering a practical solution for high-rate battery thermal management..