A novel air-cooled Li-ion battery (LIB) array thermal management system – a numerical analysis

Abstract

Li-ion battery cell operations, as an energy storage device, are delicate to changes in temperature. Extreme environmental conditions affect their cycle life and performance. Therefore, effective cell temperature management is necessary for secure and dependable battery operation. Additionally, the high production costs of electric cars must be countered by the adaptability of the battery pack design for Electric Vehicles. As the reactions generate more heat and raise the battery's temperature, it may cause the battery to explode and cause fires in the workplace. The CFD simulation is used to study the influence of a novel design of an efficient Air-cooling system to improve the performance of lithium-ion batteries by reducing the operating temperatures under a different coolant flow rate. The operational performance and service life of lithium-ion batteries are greatly affected by operating temperature. The different spacing between the batteries is investigated (S = 2, 4, and 6 mm) by using air as a cooling fluid to dissipate the heat from lithium-ion batteries by flowing the air inside flow air inside the cooling pack. The Reynolds numbers (Re) vary from 15,000 to 30,000 in the current analysis. The increasing Re number increases the average Nusselt numbers (Nu). The findings demonstrate that the thermal performance (Nu) rises as the spacing rises. The outcome of this study will provide helpful information for the designer for proper modeling of the actual battery pack design of modern, efficient EVs.