Experimental and Numerical Studies on the Effect of Lithium-Ion Batteries’ Shape and Chemistry on Heat Generation

Journal article


Authors/Editors


Strategic Research Themes


Publication Details

Author listPiyatida Trinuruk ,Warongkorn Onnuam ,Nutthanicha Senanuch ,Chinnapat Sawatdeejui ,Papangkorn Jenyongsak andSomchai Wongwises

PublisherMDPI

Publication year2023

Volume number16

Issue number1

Start page264

ISSN19961073

eISSN1996-1073

URLhttps://www.mdpi.com/1996-1073/16/1/264


View on publisher site


Abstract

Data sets of internal resistances and open-circuit voltage of a particular battery are needed in ANSYS Fluent program to predict the heat generation accurately. However, one set of available data, called Chen’s original, does not cover all types and shapes of batteries. Therefore, this research was intended to study the effects of shapes and polarization chemistries on heat generation in Li-ion batteries. Two kinds of material chemistries (nickel manganese cobalt oxide, NMC, and lithium iron phosphate, LFP) and three forms (cylindrical, pouch, and prismatic) were studied and validated with the experiment. Internal resistance was unique to each cell battery. Differences in shapes affected the magnitude of internal resistance, affecting the amount of heat generation. Pouch and prismatic cells had lower internal resistance than cylindrical cells. This may be the result of the forming pattern, in which the anode, cathode, and separator are rolled up, making electrons difficult to move. In contrast, the pouch and prismatic cells are formed as sandwich layers, resulting in electrons moving easily and lowering the internal resistance. The shapes and chemistries did not impact the entropy change. All batteries displayed exothermic behavior during a lower SOC that gradually became endothermic behavior at around 0.4 SOC onwards.


Keywords

No matching items found.


Last updated on 2023-29-09 at 07:37