magistrsko delo magistrskega študijskega programa II. stopnje Strojništvo
Gašper Žlebnik (Author), Janko Slavič (Mentor), Tomaž Katrašnik (Co-mentor)

Abstract

Po pregledu literature smo pripravili eksperimentalno progo in načrt meritev za testiranje vpliva vibracijskega utrujanja na kapaciteto LFP celic. Preverili smo še lastne frekvence sistema z utežmi. Vpetje za par celic smo oblikovali tako, da smo prisilili vzbujanje v prvi upogibni modalni obliki. Meritve smo izvajali pri različnih amplitudah pospeškov vzbujanja, kontrolirali smo še kapaciteto celice, ki ni bila vzbujana. Dodatno smo pripravili poenostavljen 3D model za analizo mehanskega napetostnega stanja celice. Rezultati so pokazali opazen vpliv vibracij tako na maksimalno, kot tudi obdržano kapaciteto. Napetostni model je pokazal mehansko napetostno stanje celice.

Keywords

magistrske naloge;vibracijsko utrujanje;baterijske celice;LFP celice;stresalnik;tip 18650;lastne frekvence;

Data

Language: Slovenian
Year of publishing:
Typology: 2.09 - Master's Thesis
Organization: UL FS - Faculty of Mechanical Engineering
Publisher: [G. Žlebnik]
UDC: 534:620.178.3:621.352(043.2)
COBISS: 156698883 Link will open in a new window
Views: 133
Downloads: 50
Average score: 0 (0 votes)
Metadata: JSON JSON-RDF JSON-LD TURTLE N-TRIPLES XML RDFA MICRODATA DC-XML DC-RDF RDF

Other data

Secondary language: English
Secondary title: Vibration fatigue of battery cells
Secondary abstract: After reading through the relevant field literature, we setup the experimental site and prepared the measurement plans for testing the effect of vibration fatigue on LFP cell capacity. We also checked the natural frequencies of the system with added weights. The cell fixture was constructed in a way to force the first bending modal shape. The test was done at different acceleration amplitudes and we had an extra control cell. Additionally, we prepared a simplified 3D model to analyse the mechanical stress state of the cell. Results showed a visible effect of vibration fatigue on both the maximum capacity and kept capacity throughout the test. The stress model displayed the mechanical stress state inside the cell.
Secondary keywords: master thesis;vibration fatigue;battery cells;LFP cells;shaker;type 18650;natural frequencies;
Type (COBISS): Master's thesis/paper
Study programme: 0
Thesis comment: Univ. Ljubljana, Fak. za strojništvo
Pages: X, 59 str.
ID: 19366057
Recommended works: