Ocenjevanje zmogljivosti akumulatorjev za uporabo v letalih na električni pogon

Juriševič, Gabrijel (author), Žemva, Andrej (mentor)

Namen diplomske naloge je postopek karakterizacije in zasnova modela litij-ionske baterijske celice, ki je sestavni del baterije za letala na električni pogon. V uvodnem delu so na splošno predstavljene baterije, njihov razvoj skozi čas in kako jih delimo. Sledi poglavje o litij-ionskih baterijah in opis njihovega delovanja. V glavnem delu je natančno opisan postopek meritev litij-ionskih baterij, ki nam omogočajo izračun parametrov. Sledi predstavitev modela baterijske celice in opis vseh parametrov ter postopek izračuna le teh. Poleg parametrov je opisan algoritem za izračun stanja napolnjenost s Coulombovim števcem. Nato so predstavljeni rezultati meritev in njihov opis ter model baterije v programu Simulink. Sledi verifikacija modela in primerjava z dejanskimi meritvami celice. Na koncu se dotaknemo še starosti litij-ionskih baterij in kaj se z njimi dogaja skozi čas ter določitvi stanja iztrošenosti akumulatorja.

• Language: Slovenian
• Keywords: litij-ionska baterija, stanje napolnjenosti baterije, model baterije, Coulombov števec, karakterizacija litij-ionske baterije, stanje iztrošenosti akumulatorja
• Work type: Bachelor thesis/paper
• Organization: FE - Faculty of Electrical Engineering
• Year: 2023
• PID: 20.500.12556/RUL-149880
• COBISS.SI-ID: 167643907
• Publication date in RUL: 11.09.2023

JURIŠEVIČ, Gabrijel, 2023, Ocenjevanje zmogljivosti akumulatorjev za uporabo v letalih na električni pogon [online]. Bachelor’s thesis. [Accessed 26 April 2025]. Retrieved from: https://repozitorij.uni-lj.si/IzpisGradiva.php?lang=eng&id=149880

Secondary language

• Language: English
• Title: Performance evaluation of batteries for use in electric powered aircraft

Abstract

The main topic of the thesis is the characterization process and the design of a lithium-ion battery cell model, which is an integral part of the electric propulsion system for aircraft. The introductory section provides a general overview of batteries, their development history, and how they are categorized. This is followed by the detailed explanation of lithium-ion batteries and their functionality. The main part describes in detail the measurement procedure process of lithium-ion batteries, which allows us to calculate the parameters. This is followed by the presentation of the battery cell model and description of all battery parameters and how they are calculated. In addition, the algorithm for calculating the state of charge with a Coulomb counter is described. Experimental results of the measurements are presented, as well as the battery model in the program Simulink. Verification of the model and the comparison with actual cell measurements follows next. Finally, the age of lithium-ion batteries, their degradation over time and the determination of the battery's state of health are presented.

• Keywords: lithium-ion battery, state of charge, battery model, Coulomb counter, characterization of lithium-ion battery, state of health