An Adaptive Sensorless Measurement Technique for Internal Temperature of Li-Ion Batteries Using Impedance Phase Spectroscopy
In 2021, Dr. Abbas Fardoun, Assistant Dean of the Faculty of Engineering at the Al Maaref University, participated in a journal paper titled "An Adaptive Sensorless Measurement Technique for Internal Temperature of Li-Ion Batteries Using Impedance Phase Spectroscopy".
This study was conducted in collaboration with Dr. Ala Husseinis, a Research Associate with the Florida Solar Energy Center and the Electrical and Computer Engineering Department, University of Central Florida, and an Associate Professor with the Electrical Power Engineering Department, Yarmouk University, Irbid, Jordan.
Abstract:
This article proposes an adaptive sensorless measurement technique for internal temperature of lithium-ion (Li-ion) batteries. The proposed technique is based on measuring the impedance phase of the battery in real time by a simple search algorithm. The proposed technique then identifies the zero-crossing frequency at which the phase of the impedance is zero. From the value of the zero-crossing frequency, the cell's internal temperature is estimated. Details on the proposed technique followed by the experimental verification using a 3.8-V/2600-mAh Samsung Li-ion battery cell at temperatures between -20 °C and +50 °C are presented.