Numerical analysis and optimization of thermal performance of lithium battery pack based on air-cooling strategy

Abstract

An effective and robust thermal management system can control the temperature of lithium batteries and maintain the long service life and high performance of the module. In this work, the thermal design and optimization of cylindrical battery packs based on air-cooled thermal management strategies are studied. Lumped model is implemented to investigate the thermophysical characteristics of single cell, and the experimental measurements is used to determine the transient heat generation of cylindrical lithium batteries under different discharge rates. On this basis, the computational fluid dynamics (CFD) method is used to analyze the temperature of the battery pack, and the heat dissipation performance of the air-cooled heat management system is explored. Finally, different air cooling strategies are investigated by changing the area and position of inlet and outlet to obtain the best cooling scheme. The results indicate that the multi-inlet and multi-outlet structure in this paper can significantly lower the temperature and improve the temperature uniformity in the battery pack. A better air-cooling performance can be obtained under the optimal parameter configuration, which will help the design of the air-cooled battery thermal management system.

Survey of air battery thermal management on the autonomous mobile robots

“…Metal foams have become a preferred material for the development of heat transfer and flow processes in recent years, thanks to their advantageous geometries. Metal foam structure is also a preferred material in battery thermal management system design development studies [69][70][71] used a thermal air thermal management design with an aluminum foam-based heat exchanger. M. R. Giuliano et al [69] used a thermal air thermal management design with an aluminum foam-based heat exchanger.…”

“…M. R. Giuliano et al [69] used a thermal air thermal management design with an aluminum foam-based heat exchanger. Wang et al [71] studied the effects of metal foam porosity and pore density on thermal management capability for a system using metal foam in the battery pack flow field. Wang et al stated that aluminum foam heat sink is used in thermal management system provides 30% lower average max temperature than without matal foam thermal management system, at the expense of pumping power losses.…”