Efficient Temperature Control of Lithium‐Ion Battery Through an Ambient Cooling Model

There exists a long‐standing challenge on how to cool down the heat released from a lithium‐ion battery. Usually researchers adopted expensive techniques for battery cooling. This study attempts to propose an ambient cooling model using electrochemical and thermodynamic principles to address this issue. A standard lithium‐ion battery is used. This battery is based on nickel–cobalt–aluminum oxide (NCA) cathode material which is known to have high energy density. This study calculates heat generation during the charging process and installs an air coolant to control cell temperature. The battery is positioned in an air‐flowing compartment of a battery pack. Thermal analysis demonstrates superior temperature control, with approximately a 29.34% reduction in temperature compared to a commercial battery. Air coolant velocity contributes to more efficient cooling from the periphery to the center, depicting a gradient of temperature from 331 K to 335 K. Additionally, the specific capacity was improved by roughly 7.63%, followed by a gradual voltage increment of 1.16% compared to commercial LIBs. During the charging period, specific energy and power densities increase by approximately 14.09% and 67.55%, respectively, compared to previous cells. These findings highlight the superior temperature control, enhancement of cell performances, and thermal safety of LIBs.