Abstrakt

Coupled Electrochemical Modeling and Transient Thermal Analysis of a Lithium-Ion Battery Pack comparing different cooling solutions in STAR CCM+

Armando De Vita*, Massimo Santarelli, Massimiliana Carello

Li-Ion batteries are rapidly becoming the technology of choice for the next generation of Electric Vehicles, Battery Electric Vehicles, Plug-In Hybrid and Hybrid Electric Vehicles (EVs/BEVs/PHEVs/HEVs). Li-Ion battery, so far, is the technology that best fits for the need of these vehicles, due to their large specific energy density and specific power, making these cells ideally suited for high rate-of-discharge applications such as acceleration of electric vehicles. Lithium-ion cells performance depends on both the temperature and the operating voltage. Lithium-Ion cells work well when cells operate within limited voltage and temperature. Otherwise, damage will occur to the cells and will be irreversible. This paper presents a computationally efficient modeling approach to characterize the internal temperature distribution within a Li-Ion battery pack. This would be as a tool to design models characterizing the thermal behavior of Li-Ion battery cells to be used in order to perform thermal management studies for battery pack cooling systems.