Improved Thermal Management of Lithium-Ion Battery Module through Microtexturing of Serpentine Cooling Channels Dwijendra Dubey, Ashutosh Mishra, Hithesh Chandrakant Shriyan, Tej Pratap, Ramesh Pandey Energy Technology, 2024 Elevated battery temperature and its heterogeneity are responsible for many battery‐related problems such as short lifespan and thermal runaway. For longer life and safe functionality of lithium‐ion battery (LIB), both the average battery temperature and temperature heterogeneity must be controlled. The present work analyzes a modified cooling channel design that can control both the average battery temperature and its heterogeneity. The design adopts microtexturing approach for the heat transfer augmentation of the serpentine cooling channels. First, the transient thermal analysis of different geometry of microtextures, viz., microchannels (MCs) and microdimples (MDs), is carried out on an aluminum slab. The rectangular MCs and square MDs are found to be the most efficient among the other considered microtexture geometries. Further, the modified design is employed for a 19‐cell battery pack to analyze the thermal performance, pressure drop, and coolant pump power requirements. A decrease in maximum temperature difference (MTD) by 6.03 % and 3.72% is observed for 380 MCs (rectangular) and 960 MDs (squared), respectively. While MDs improve the temperature homogeneity within the LIBs, the coolant pump power requirement and pressure drop (by ≈15.42%) are higher for it compared to the MC‐based design for a given MTD.
INFLUENCE OF PROCESS PARAMETERS ON MECHANICAL STRENGTHS OF 3D-PRINTED CARBON-PLA BASED COMPOSITES FOR ORTHOTICS AND PROSTHETICS APPLICATIONS Divya Pandey, Ramesh Pandey, Ravi Prakash Tewari Composites Mechanics Computations Applications, 2023 The objective of the present work is to study the influence of process parameters on the mechanical behavior of composite material parts developed by Fused Deposition Modeling (FDM). Carbon-PLA-based composite specimens are used in the present work. Experimental results have shown that with increases in printing temperature from 225°C and 240°C, there is an increase in tensile strength, whereas flexural strength decreases with the temperature rise. The effect of printing orientation is the same on both tensile and flexural strength. Tensile and flexural strengths are higher for flat orientation (0°) than for upright orientation (90°). It is also found that when layer height decreases from 0.3 mm to 0.2 mm, both the tensile and flexural strength increases. The experimental results of the present study signify the importance of Carbon-PLA-based composites for orthotic and prosthetic devices due to their high strength, low cost, and biocompatibility.
