This review collects various studies on the origin and management of heat generation in lithium-ion batteries (LIBs). It identifies factors such as internal resistance, electrochemical reactions, side reactions, and external factors like overcharging and high temperatures as contributors to heat generation.
Heat Generation and Thermal Transport in Lithium-Ion Batteries: A Scale-Bridging Perspective Lithium-ion batteries (LIBs) are complex, heterogeneous systems with coupled electrochemical and thermal phenomena that lead to elevated temperatures, which, in turn, limit safety, reliability, and performance.
In addition, some researchers have also studied the effect of aging on the heat generation characteristics of lithium-ion batteries during charging/discharging. Zhang found that the total heat generation decreased while the heat generation rate increased significantly during the discharge process under the fast charge aging path.
Various parameters influence the heat generation of LIBs, with battery temperature being affected by factors such as cooling and heating systems in the thermal management system, ambient temperature, battery thermal conductivity, heat generation, and battery heat capacity.
Recent advancements in lithium-ion battery (LIB) technology have underscored the critical importance of understanding and managing heat generation to enhance performance, safety, and longevity.
The self-production of heat during operation can elevate the temperature of LIBs from inside. The transfer of heat from interior to exterior of batteries is difficult due to the multilayered structures and low coefficients of thermal conductivity of battery components , , .