Optimization for cooling system of batteries having porous material using design of experiments

A hybrid power composed of fuel cell and batteries has become the reasonable strategy for hybrid electric vehicles. On the contrary, the produced heat by batteries can affect the total performance of hybrid electric vehicles significantly. In this paper, analysis methods and optimization strategy were constructed for obtaining the high performance cooling system for batteries having porous material. At first, a numerical method for obtaining the temperature distribution of battery pack including porous material was developed by using CFD technique. In the following step, the cooling systems for batteries with porous material or not were compared for showing the merit of the cooling system for batteries having porous material. Ultimately, an optimization strategy based on D-optimal DOE method was obtained through a real optimal design process. There was 13.3% reduction on the view of the root mean square temperature between batteries compared with the original cooling system for batteries as shown in the optimization result. The constructed analysis method and optimization strategy can be used to improve the performance of the cooling system for batteries, and these works have made the theoretical basis for simulation and optimization of the cooling system for batteries.