Semi-empirical models for battery SoH estimation

The estimation of the state of the health (SoH) of the Li-ion batteries allows to improve the safety of the Li-ion battery operation and estimate the its operation time. The semi-empirical models are one of the simplest methods for the prediction of the loss of capacity and increasing of the internal resistance based on…

Series hybrid powertrain simulations

Through powertrain simulations, one can: predict drive motor operation and temperature; predict battery usage; predict energy flows, overall system efficiency and losses in; different part of system; determine the fuel consumption; estimate battery lifetime. Text and simulations by Paula Immonen (LUT University)

New laboratory facilities at Turku University of Applied Sciences

We are moving, see https://www.turkuamk.fi/fi/turun-amk/yksikot-ja-kampukset/educity/! TUAS Laboratory Facilities for Battery and Vehicle Research (summary by Mika Lauren 15.5.2020) Turku University of Applied Sciences is investing to new laboratory facilities in Kupittaa Campus area. A new EduCity building started in autumn -20. There is listed most important laboratory facilities concerning the battery- and vehicle research.…

Technical online seminar 15th May 2020

Another afternoon filled with very interesting presentations on electrification of heavy machinery! A big thank-you to all presenters! Stay healthy!

Retrofit Optimization of Battery Air Cooling By CFD and Machine Learning

We investigate a simulation methodology for systematically optimizing air cooling in an existing battery system by placement of passive components. The goal in such retrofit optimization is to achieve design improvement by making as few and cheap changes in the original system as possible. Our methodology utilizes CFD for fluid flow and heat transfer…

ModelConductor: An Open-Source Real-Time Data Management Library for Digital Twins

In the attached article, to be submitted to the IEEE ETFA 2020 conference, we introduce an open-source Python-based framework, called ModelConductor, for real-time input-output data management in digital twin applications. For data interexchange, ModelConductor supports periodic polling of a database (such as MySQL) or a TCP socket connection. For simulation model interfacing, ModelConductor supports…

Modelling of a hybrid powertrain

Interest in electric hybridization of non-road mobile machinery is increasing during the last few years, because of tightening emission regulations and standards. Hybridization of non-road working machine can be implemented in many different configuration, parallel hybrid or series hybrid, only one drive motor or all-wheel drive. Target of modelling of a hybrid powertrain is…

Analysis of SoH estimation methods for Li-ion batteries

  Li-ion technology is a fast growing and the most promising battery technology nowadays. Despite the advantages of the Li-ion batteries, there are major technical and financial challenges remaining that limit their application. The Li-ion battery is a non-linear and a time-variable system, whose internal electrochemical processes are almost impossible to be observed directly.…