Universal Li-Ion Cell Electrothermal Model

Li-Ion Cell Operation at Low Temperatures

Lithium-ion Battery Electrothermal Model, Parameter Estimation, and Simulation Environment

The market for lithium-ion batteries is growing exponentially. The performance of battery cells is growing due to improving production technology, but market request is growing even more rapidly. Modeling and characterization of single cells and an efficient simulation environment is fundamental for the development of an efficient battery management system. The present work is devoted to defini...

Mesoscale Modeling of a Li-Ion Polymer Cell

Finite element models of a three-dimensional, porous cathode were constructed and analyzed by the COMSOL multiphysics package version 3.2 . Four types of cathode active material particles, arranged in both regular and random arrays, were modeled. Experimental studies of Li/PEO-LiClO4/Li1+xMn2O4 where 0 x 1 were used to validate simulation results. Two parameters, Li ion diffusivity into Li1+xMn...

Doped sulfone electrolytes for high voltage Li-ion cell applications

We show that, with appropriate doping, the ethersulfone-based electrolytes that we earlier reported to have 5.6 V electrochemical windows but poor cycling performance in Li-ion cells, can succeed. We show they can be used to make cells that, at C/20 charge/discharge rates, have cycling performance equal to those with the standard LiPF6-carbonate electrolytes. A difference in performance that de...

An Acausal Li-Ion Battery Pack Model for Automotive Applications

In this work, a novel acausal and reconfigurable battery pack model is presented. The model structure adopted for the battery cell is based on an equivalent circuit representation. The circuit elements are modified to take account of both hysteresis and diffusion limitation. The latter is known to be a nonlinear function of large operating currents or long operating times. It is shown that the ...