Optimization Design and Numerical Study of Liquid-Cooling Structure for Cylindrical Lithium-Ion Battery Pack

Thermal-Switchable, Trifunctional Ceramic–Hydrogel Nanocomposites Enable Full-Lifecycle Security in Practical Battery Systems

“…The measured total enthalpy (25–70 °C) can reach 179.6 J g –1 , close to many advanced PCMs (Figure b), such as silicone grease (161.02 J g –1 ), paraffin-expanded graphite/copper foam (75.00 J g –1 ), and paraffin (124.90 J g –1 ) . Moreover, the corresponding specific heat is higher than that of most reported coolants, including n -eicosane (2.40 J g –1 K –1 ), Ga 68 In 20 Sn 12 (0.35 J g –1 K –1 ), thermal paste (1.70 J g –1 K –1 ), greases (1.20 J g –1 K –1 ), polydicyclopentadiene (1.40 J g –1 K –1 ), and glycol solution (3.40 J g –1 K –1 ) . Thus, the nanocomposites can dissipate 8.8 kJ heat within 25 to 70 °C, resulting in a battery temperature drop of 10.6 °C, generally meeting the thermal management requirements in the battery systems.…”

“…36 Moreover, the corresponding specific heat is higher than that of most reported coolants, including n-eicosane (2.40 J g −1 K −1 ), 37 Ga 68 In 20 Sn 12 (0.35 J g −1 K −1 ), 38 thermal paste (1.70 J g −1 K −1 ), 6 greases (1.20 J g −1 K −1 ), 39 polydicyclopentadiene (1.40 J g −1 K −1 ), 40 and glycol solution (3.40 J g −1 K −1 ). 41 Thus, the nanocomposites can dissipate 8.8 kJ heat within 25 to 70 °C, resulting in a battery temperature drop of 10.6 °C, generally meeting the thermal management requirements in the battery systems. Even after 50 and 100 cycles, the DSC curves of the nanocomposites remained stable and almost coincided with the initial curve (1 cycle).…”