Accession Number : ADA583295


Title :   Online Parameterization of Lumped Thermal Dynamics in Cylindrical Lithium Ion Batteries for Core Temperature Estimation and Health Monitoring


Descriptive Note : Journal article


Corporate Author : MICHIGAN UNIV ANN ARBOR DEPT OF MECHANICAL ENGINEERING


Personal Author(s) : Lin, Xinfan ; Perez, Hector E ; Siegel, Jason B ; Stefanopoulou, Anna G ; Li, Yonghua ; Anderson, R D ; Ding, Yi ; Castanier, Matthew P


Full Text : https://apps.dtic.mil/dtic/tr/fulltext/u2/a583295.pdf


Report Date : Jan 2012


Pagination or Media Count : 13


Abstract : Lithium ion batteries should always be prevented from overheating and hence thermal monitoring is indispensable. Since only the surface temperature of the battery can be measured, a thermal model is needed to estimate the core temperature of the battery, which can be higher and more critical. In this paper, an online parameter identification scheme is designed for a cylindrical lithium ion battery. An adaptive observer of the core temperature is then designed based on the online parameterization methodology and the surface temperature measurement. A battery thermal model with constant internal resistance is explored first. The identification algorithm and the adaptive observer is validated with experiments on a 2:3Ah 26650 lithium iron phosphate/graphite battery. The methodology is later extended to address temperature dependent internal resistance with non-uniform forgetting factors. The capability of the methodology to track the long term variation of the internal resistance is beneficial for battery health monitoring.


Descriptors :   *LITHIUM BATTERIES , *THERMODYNAMICS , ADAPTIVE SYSTEMS , ALGORITHMS , CORES , CYLINDRICAL BODIES , ESTIMATES , HEALTH , IDENTIFICATION , IONS , MEASUREMENT , METHODOLOGY , MODELS , MONITORING , NONUNIFORM , OBSERVERS , ONLINE SYSTEMS , REPRINTS , RESISTANCE , SURFACE TEMPERATURE , SURFACES , TEMPERATURE , THERMAL PROPERTIES , VALIDATION , VARIATIONS


Subject Categories : Electrochemical Energy Storage
      Thermodynamics


Distribution Statement : APPROVED FOR PUBLIC RELEASE