Researchers used heat flux sensors from greenTEG to track thermal behavior in a 60Ah prismatic Li-ion battery. The research has been published in International Communications in Heat and Mass Transfer.

Experimental analysis and transient thermal modelling of a high capacity prismatic lithium-ion battery

Authors: Rania Rizk, Hasna Louahlia, Hamid Gualous, Pierre Schaetzel

Abstract:

In this paper, a three-dimensional transient model, predicting the thermal behaviour of a 60 Ah prismatic Li-ion battery during charge/discharge cycles under natural convection, is proposed. Also, an experimental test bench is used to charge and discharge the battery at different current rates (1C, 5/6C and 2/3C) in order to track its thermal behaviour using thermocouples and heat flux sensors. The model includes heat generation and solves conduction inside the battery and natural convection as boundary condition. Some of the required parameters, such as heat transfer coefficients, thermal conductivities along y and z directions and electrical resistance, are determined using experimental data. Heat capacity, thermal conductivity along x direction and entropy change are determined based on literature. Simulated battery surface temperatures are compared to experimental measurements resulting in less than 5% relative error. Additionally, core temperatures as well as reversible and irreversible heat generations are simulated using the proposed model. Simulated total heat generation is compared to measured heat generation at steady state showing a good agreement, which makes it possible, using this simple model, to predict the maximum heat generated inside the battery, and consequently the core temperature, in order to design a suitable thermal management system.

Full publication: https://www.sciencedirect.com/science/article/pii/S073519331830071X

Thermal and Structural Performance of Geopolymer Concrete Containing Phase Change Material

U-value measurements on a roof: challenges and best practices

greenTEG is hiring!

Effects of electrode composition on heat generation in Electrical Double Layer Capacitors EDLCs

We will visit the Medtec fair in Japan

Thermal Analyses of Crushed-Rock Layers for Permafrost Protection

Where to meet us: upcoming show and fair participations

gO-Measurement System used to estimate the specific thermal capacity of building components per unit surface area