Energy efficient cluster approach for dry room operation in lithium-ion battery production
As a matter of fact, the operation of low dew point dry rooms is essential for the clean and safe production of lithi-um-ion battery cells. However, the high demand in electrici-ty, natural gas and further supplies is a barrier on the path to sustainable energy storage solution. As Vogt et al simulated in their work, […]
Digital twins for sustainable battery cell production
Climate change requires the use of renewable energies, which goes hand in hand with the indispensability of efficient electrical energy storages – leading to an increase in demand for battery cells. Approaches to ensure the sustainable production of battery cells lie in product-specific analyses and to improve production and recycling processes. This is only possible […]
Data-driven parameter identification of an electrochemical model for lithium-ion batteries with artificial intelligence
Electrochemical models are more and more widely applied in battery diagnostics, prognostics and fast charging control, considering their high fidelity, high extrapolability and physical interpretability. However, parameter identification of electrochemical models is challenging due to the complicated model structure and a large number of physical parameters with different identifiability. The scope of this work is […]
Simulating the Temperature Spread within a Commercial Li-Ion Battery Module – A performant and non-destructive Characterization and Modeling Process
Modeling the effects of thermal cell-to-cell variations within a so-called digital twin running in parallel to the physical battery system offers various advantages, especially for large-scale and investment-intensive automotive, marine or stationary systems. In this context, FEM/CFD approaches as well as thermal equivalent circuit models represent the current state of the art in calculating the […]
LiIon Round Cell Alternatives for the automotive market
Currently most so called high end suppliers for round cells LiIon are not able to supply to the general market as they are focusing on the automotive market. When talking about the automotive market we are not only talking about demand for traction batteries, but also batteries for other functions like E-Call are considered. Especially […]
Lithium Plating Detection and Characterization Utilizing Impedance Changes During the Lithium Deposition
Lithium plating is one of the most damaging ageing mechanisms in Lithium Ion Batteries that also poses a safety risk due to dendrite growth. It is very challenging to detect the onset of lithium plating in operando before the plating even occurs to prevent plating during battery operation as well as very time consuming to […]
Financial viability of electric vehicle battery recycling
The steep increase in electric vehicle (EV) sales will inevitably lead to a large amount of end-of-life lithium-ion batteries (LIBs) accumulating in the coming decades. Those will need to be disposed of in a safe and eco-friendly manner to prevent landfill fires and leakage of toxic materials into the environment. Here, battery recycling is pivotal […]
Prediction of loss of lithium caused by anode overhang effects – Model validation and parameter study
Most lithium-ion batteries contain areas of active material with no opposing counter-electrode as a result of the production process. This overhang, which is formed by the graphite anode in most lithium-ion battery designs, contributes to the overall cell performance as a sink or a source of cyclable lithium inventory over time periods ranging from days […]
Configuration and Sizing of Machine Learning Algorithms for Battery SOC, SOH, and Temperature Estimation
While there is increasing interest in neural network machine learning algorithms for battery state estimation and modeling, the process of determining what type of network to use and how to size and configure the networks remains difficult. Battery applications typically utilize networks which fall into a few broad categories, including (1) non-recurrent networks with no […]
Recent progress in continuous slurry production – towards smart manufacturing of electrode slurries
State of the art electrode manufacturing lines rely usually on discontinuous slurry production processes. Especially with the increasing demand for battery electrodes, the extrusion process for continuous slurry production has caught the interest of both public research and industry. Twin screw extrusion lines combine superior scalability with short processing times and decent dispersing efficiency in […]