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Main Title: MATLAB/Simulink model for predicting voltage and impedance during discharge of a lithium-ion battery cell
Author(s): Kim, Jonghyeon
Type: Software
Abstract: An electrical equivalent circuit model of a lithium-ion cell is developed in MATLAB/Simulink. Overcharging and over-discharging of lithium-ion battery cells can shorten battery life and cause safety issues. Cells also perform differently with aging conditions. The battery cell impedance can be used to estimate the cell State-of-Charge and cell State-of-Health. However, it takes a long time for cells in each state to be prepared and the cell voltage response during charging and discharging under each condition to be measured. Accurate simulation models eliminate not only the purchase cost of experimental devices, but also the time required for cells to be prepared in different states, and significantly reduce the time required for measurement. Cell impedance output from the simulation model takes into account cell SoC, SoH, temperature, and C-rate. The developed model successfully outputs cell impedance through real-time prediction of cell voltage during discharge. This simulation model is suitable for use in cell SoC and cell SoH monitoring studies.
Subject(s): Li-ion battery
battery cell model
Issue Date: 13-Jan-2022
Date Available: 13-Jan-2022
Language Code: en
DDC Class: 620 Ingenieurwissenschaften und zugeordnete Tätigkeiten
TU Affiliation(s): Fak. 4 Elektrotechnik und Informatik » Inst. Energie- und Automatisierungstechnik » FG Elektrische Energiespeichertechnik
Appears in Collections:Technische Universität Berlin » Research Data

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