Modelado multifísico de celda comercial LFP2714897P-27Ah

MUÑOZ, PEDRO MATÍAS; HUMANA, RITA MARIANGELES; FALAGUERRA TOMÁS; CORREA PERELMUTER, GABRIEL

2020-06-01/2020-09-01

Lingüística

Energia-Electrica

The development of thermal coupled models becomes important as a nexus betweeninvestigation and product development. Lithium-ion battery modelling has been subject of interest inelectrochemistry and engineering for a long time. The most widely used model is the one publishedby Doyle, Fuller and Newman in 1993 [7] and called pseudo-two-dimensional model (P2D). Later,Pals and Newman added an energy balance to that model to take into account the heat generation ofthe cell [8]. The P2D model is regarded today as the standard model for the analysis of thermal effects,and simplified formulations are proposed in recent literature as the next step in battery managementsystems (BMS) [9?12].To adequately capture the behavior of batteries, P2D models require a long set of parameters[13?16] that can be obtained during the production stage of the battery.Frequently the battery and pack manufacturer are not the same and the parameters needed forthe P2D models are obtained following different approaches [17?21], that range from the selection ofparameters found in literature to the design of parameterization protocols and tear-down methodologiesin order to experimentally determine this quantities. It is important to highlight that the latter approachdoes not guarantee the best fit between model predictions and experimental measures, and therefore,some parameters may need to be tuned to achieve better results [21].Thermal coupled models of Li-ion batteries are used in product development to design suitablethermal management systems (TMS) for battery packs that ensure proper conditions during batteryoperation [16, 22, 23].In this report, firstly, a brief description of the model. Later, we discuss the parameterization ofa P2D model to simulate the behaviour of the LFP2714897P-27Ah Li-ion battery (see Appendix A),based on the data provided in its data-sheet. After finding a set of parameters that provide a good fitbetween experimental and simulation data, the electrochemical and thermal behaviour of the cell is investigated.