Lithium Intensity of Solid-State Batteries

In the ever-evolving world of lithium-ion batteries, solid-state batteries (SSB) are seen as the next generation of lithium-ion batteries. In an SSB, the liquid electrolyte used in conventional lithium-ion cells is replaced by a solid electrolyte capable of conducting lithium. There are three main families of solid electrolytes: oxides, sulphides, and polymers. SSBs promise to … Read more

Effect of Electrode Thickness on Cell Energy Density

In Li-ion batteries, the cathode thickness will heavily influence the energy density of the cell. A thicker cathode means there will be more cathode active material in the electrode. This increases the capacity of the electrode and hence increase the energy density of the cell. However, this relationship is not linear. Using the CAMS model, … Read more

Case-studies on Cell Design and Construction using the CAMS model

The Faraday Institution

This post is a compilation of three separate case-studies covering battery cell design and construction. The data and analysis for these case-studies was carried out using the Faraday Institutions CAMS model. CAMS was designed to rapidly assess the potential energy density of different cell chemistries and cell formats. The model can also be used as … Read more

Thermal Runaway Modeling and Calibration of an LFP Battery Cell

thermal runaway model

This post presents an example of the Thermal Runaway Modeling and Calibration of an LFP Battery Cell using the ARC device, the HWS test protocol and Simcenter Amesim. An abuse test is the most direct way to challenge the thermal stability limits of a Li-ion cell and characterize the thermal runaway phenomena. The Accelerating Rate Calorimeter (ARC) test … Read more

Tesla Fast Charge Thermal Model

Tesla fast charge thermal model building on open source data and a siemens model

Building on the Tesla fast charge thermal model that was discussed in the Siemens post: Race to the clouds: Battery thermal behavior simulation of a Tesla Model 3. This article looks at the cooling system and impact of a change in cooling direction. Starting with the model and the original Fast Charge Scenario. Fast Charge … Read more

Using an ECM to Model HiPot Tests

circuit schematic for HiPot test modelling

Author: Siddharth Kurwa A DC high-potential test (HiPot) is used to detect manufacturing defects in the electrode stack/jelly roll. During the test, a high voltage (orders of magnitude higher than the cell operating voltage) is applied to the cell to screen out early-in-life and latent risks from the production cell population. It is preferred to … Read more

Control-Oriented Reduced-Order Models

Control-Oriented Reduced-Order Models for Lithium-Metal Batteries 22nd Advanced Automotive Battery Conference– San Diego, CA – December 5-8, 2022 Authors: Aloisio Kawakita de Souza, Wesley Hileman, M. Scott Trimboli, Gregory L. Plett Department of Electrical and Computer Engineering, University of Colorado Colorado Springs Background Objectives Develop two physics-based control-oriented models of LMBs for the design of … Read more

Battery Cell Modelling

The need for modelling The primary reason why one is interested in having a model of a battery is it allows us to make informed decisions, optimise or control a battery to deliver on its intended applications. For instance, we may be interested in knowing how different material choices, electrode compositions or cell packaging, will … Read more

Digital Twin of a Battery Module

Battery module construction.

Including the Impact of Bus Bar Design and Weld Quality Electrochemical Cell Model and Current Distribution Busbar Model Authors: Yaxing Ren, W. Dhammika Widanage, James MarcoWMG, University of Warwick Cell Modelling Busbar Modelling Impact / Next Steps References Biography Yaxing is a Faraday Institution Research Fellow at the University of Warwick, working on the Multi … Read more