20.500.12556/RUL-186793 Primerjava različnih sistemov za merjenje elektrokemijske impedančne spektroskopije baterij Comparison of different systems for measuring electrochemical impedance spectroscopy of batteries V diplomski nalogi je izvedena primerjava različnih sistemov za merjenje elektrokemijske impedančne spektroskopije (EIS) pri karakterizaciji litij-ionskih baterij. Primerjani so laboratorijski merilni sistemi in cenovno dostopnejši sistemi. Meritve so bile izvedene pri različnih stanjih napolnjenosti baterije, rezultati pa predstavljeni in analizirani z uporabo Nyquistovih in Bodejevih diagramov. Pri tem so ovrednotene natančnost, stabilnost in primerljivost rezultatov posameznih merilnih sistemov ter njihove omejitve pri karakterizaciji baterijskih celic. Na podlagi primerjave je ocenjena primernost cenovno dostopnejših EIS-sistemov za širšo uporabo pri karakterizaciji litij-ionskih baterij. Posebna pozornost je namenjena tudi vplivu spreminjanja polnosti baterije na rezultate EIS-meritev. The thesis presents a comparison of different systems for measuring electrochemical impedance spectroscopy (EIS) for the characterization of lithium-ion batteries. Laboratory measurement systems and more cost-effective systems are compared. Measurements were performed at different states of charge of the battery, and the results were presented and analyzed using Nyquist and Bode plots. The accuracy, stability, and comparability of the results obtained with individual measurement systems, as well as their limitations in the characterization of battery cells, were evaluated. Based on the comparison, the suitability of more cost-effective EIS systems for wider use in the characterization of lithium-ion batteries was assessed. Particular attention was also paid to the influence of changes in the battery's state of charge on the EIS measurement results. litij-ionske baterije elektrokemijska impedančna spektroskopija merilni sistemi Nyquistov diagram Bodejev diagram karakterizacija baterij lithium-ion batteries electrochemical impedance spectroscopy measurement systems Nyquist plot Bode plot battery characterization true false false [M. Mušič] Slovenski jezik Angleški jezik Diplomsko delo/naloga 2026-09-05 08:32:46 2026-09-05 08:32:47 2026-09-07 12:46:02 0000-00-00 00:00:00 2026 0 Ljubljana 0 XIII, 39 f. 0000-00-00 NiDoloceno NiDoloceno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 621.355:537.8(043.2) 289383 290189571 49166.pdf 49166.pdf 1 9A1F6A4C641199D64CC9389E918DB31A 33bdd51904aa42e86daf586f53a08ca63d2f672f9e78e93266516b64b44b9496 9a6f5763-a8f3-11f1-8bc5-0050569b8976 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=246164 Fakulteta za strojništvo 0 0 0