Preisach modelling of lithium-iron-phosphate battery hysteresis

Abstract

The hysteresis of the open-circuit voltage as a function of the state-of-charge in a 20 Ah lithium-iron-phosphate battery is investigated starting from pulsed-current experiments at a fixed temperature and ageing state, in order to derive a model that may reproduce well the battery behaviour. The hysteretic behaviour is modelled with the classical Preisach model used in magnetic materials. The paper shows that the Preisach model can successfully be applied to the lithium-ion battery hysteresis. First, the model is discretised by using the Everett function and identified by means of experiments, in which first-order reversal branches are measured. Then, the model is simulated and compared to some experimental data collected with different current profiles and to a one-state variable model previously used in the literature. The results show that the hysteresis is well reproduced with rms errors around 2%. The advantages of the Preisach-based method, when compared to other models, are the formal and repeatable identification procedure and the limited computational resources needed for the model simulation that makes it appropriate for the online implementation on low-complexity hardware platforms

The Preisach model of hysteresis: fundamentals and applications

“…The battery cell reaches different open circuit voltages at the same state of charge and temperature, depending on the previous charge history. In [217,218] various hysteresis models, including the Preisach model, have been used to describe the properties of lithium-ion battery sources. A more general approach is proposed in [219,220].…”

Стохастическая Модель Гистерезисного Преобразователя С Доменной Структурой

“…Обзор [33] дает представление о применении моделей гистерезиса не только в биологических, но и в макроэкономических, гидрологических и некоторых других задачах (см. также [34][35][36][37][38]).…”

Modeling of LiFePO4 battery open circuit voltage hysteresis based on recursive discrete Preisach model

“…There have been extensive studies dealing with battery hysteresis modeling. [12][13][14][15][16][17][18][19][20][21][22][23][24][25] The Preisach model (PM) is one of the most popular methods for battery hysteresis modeling. The Preisach model was proposed by Preisach [21] in 1935 and has been used for hysteresis modeling in various kinds of systems such as magnetics, piezoelectric actuators, batteries, etc.…”

“…In Ref. [24], the Everett function was adopted to discretize the Preisach model, and the first-order reversal branch test was used to identify the density function, which simplifies the measurement and reduces the computation resources. In Ref.…”