An Adaptive Sensorless Measurement Technique For Internal Temperature Of Li-Ion Batteries Using Impedance Phase Spectroscopy

Keywords

Impendance; Internal temperature; Lithium-ion battery; Zero-crossing frequency

Abstract

This paper 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 experimental verification using a 3.8V/2600mAh Samsung Li-ion battery cell at temperatures between -20 and +50 deg C are presented.

Publication Date

12-3-2018

Publication Title

2018 IEEE Energy Conversion Congress and Exposition, ECCE 2018

Number of Pages

3555-3559

Document Type

Article; Proceedings Paper

Personal Identifier

scopus

DOI Link

https://doi.org/10.1109/ECCE.2018.8558442

Socpus ID

85060298788 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/85060298788

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