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— Parameterization and Observability Analysis of Scalable Battery Clusters for Onboard Thermal Management — Thermal management is an important issue for lithium ion batteries, as overheating may result in disastrous consequences. Although the battery surface temperature is commonly measured, the core temperature of a cell may be much higher hence more(More)
— 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(More)
— Temperature monitoring is a critical issue for lithium ion batteries. Since only the surface temperature of the battery can be measured, a thermal model is needed to estimate the core temperature, which can be higher and hence more critical. In this paper, an on-line parameter identification scheme is designed for a cylindrical lithium ion battery thermal(More)
In this paper, for the first time, an equivalent circuit electrical model is integrated with a two-state thermal model to form an electro-thermal model for cylindrical lithium ion batteries. The parameterization of such model for an A123 26650 LiFePO 4 cylindrical battery is presented. The resistances and capaci-tances of the equivalent circuit model are(More)
This paper shows how the principle of neutron radiography can be used to quantify the critical physical state of lithium concentration across battery electrodes at steady-state conditions (after a long relaxation time or small load) as a first step in this important effort to measure in-situ battery physical states and validate electrochemical battery(More)
— In an effort to evaluate the accuracy of various battery models we use neutron imaging which is a non-destructive in situ measurement technique that has been successfully used to track the migration of lithium between the anode and cathode electrode layers during battery operation. In this work we extend the previous results, acquired during steady state(More)