An Electro-Thermal Model for LFP Cells: Calibration Procedure and Validation

Lithium batteries for energy storage systems are a prominent solution for both stationary and mobile applications. Electro-thermal modelling of the cell is a useful tool for monitoring voltage and temperature in order to predict battery behaviour especially in cases of critical operative conditions....

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Bibliographic Details
Published in:Energies (Basel) 2022-04, Vol.15 (7), p.2653
Main Authors: Barbieri, Michele, Ceraolo, Massimo, Lutzemberger, Giovanni, Scarpelli, Claudio
Format: Article
Language:English
Subjects:
Applications programs
Batteries
battery
Calibration
Cell surface
Electric potential
Energy storage
experimental
Lithium
Lithium batteries
Model accuracy
Modelling
Partial differential equations
Physics
Storage batteries
Storage systems
Surface temperature
Temperature profiles
test
Thermal analysis
Thermal stress
Voltage
Working conditions
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Summary:Lithium batteries for energy storage systems are a prominent solution for both stationary and mobile applications. Electro-thermal modelling of the cell is a useful tool for monitoring voltage and temperature in order to predict battery behaviour especially in cases of critical operative conditions. This paper provides a modelling approach focusing on the calibration of parameters of an electro-thermal model for large prismatic LFP lithium cells. The designed model is tuned by means of experimental tests that identify a set of parameters that are function of a cell’s state-of-charge and temperature. The model outputs are voltage, cell surface, and internal temperature profiles, which are validated against experimental data referring to realistic working conditions, even providing an intense level of thermal stress. The model accuracy is marked by a voltage mean average error lower than 1% and a mean cell surface temperature deviation lower than 1 K.
ISSN:1996-1073
1996-1073
DOI:10.3390/en15072653