Tensorial effective transport properties of Li-ion battery separators elucidated by computational multiscale modeling

Overview on Theoretical Simulations of Lithium‐Ion Batteries and Their Application to Battery Separators

“…From the microscale solution, homogenized fluxes and their dependence on the downscaled macroscale variables have been upscaled, demonstrating the drawbacks associated with currently accepted procedures, leading in some cases to severe variations in the prediction of field quantities. [146] The stress analysis of polymeric separators in a lithiumion battery was performed using different softwares such as Comsol [147] or LS-Dyna. [148] The simulations with a meso-scale representative volume element (RVE) reveal that the stress in the separator varies in phase with the battery cycles, its state, and magnitude depending upon Young's modulus of the separator, electrode particle size, packing, and the pressure of the cell.…”

“…From the microscale solution, homogenized fluxes and their dependence on the downscaled macroscale variables have been upscaled, demonstrating the drawbacks associated with currently accepted procedures, leading in some cases to severe variations in the prediction of field quantities. [ 146 ]…”

Variationally Consistent Modeling of a Sensor-Actuator Based on Shape-Morphing from Electro-Chemical-Mechanical Interactions

“…Computational homogenization has been proposed for the electrochemical-mechanical interaction in order to upscale to macroscale effective properties/variables, e.g. Salvadori et al (2014Salvadori et al ( , 2015, Zhang et al (2020), Gupta and Gudmundson (2021), Zhuo et al (2021).…”