20.500.12556/RUL-152009 Analiza uporovnega točkovnega varjenja električnih vodnikov na litijeve baterije Analysis of resistance spot welding of electrical conductors to lithium batteries V proizvodnji so se uveljavile različne tehnike spajanja litijevih baterij z električnimi vodniki. Zaradi nevarnosti, povezanih z varjenjem baterij, moramo uporabiti natančne parametre spajanja in dobro kontroliran proces. Preučevali smo uporovno točkovno varjenje za spajanje električnih vodnikov na baterije. Obravnavali smo različne vire varilnega toka in materiale, ki se uporabljajo v praksi. Dobljene zvare smo mehansko in metalografsko preiskovali. Ugotovili smo, da ima ob uporabi virov enosmernega električnega toka, kot sta kondenzatorski in inverterski vir, prva od varjenih zvarnih točk večjo nosilnost. Kljub dobri nosilnosti in velikosti točke v primerih zlepov smo ugotovili, da gre za zelo krhek tip spoja, ki je neprimeren za dinamično obremenjene aplikacije. Different methods for joining of lithium batteries with electrical conductors are being used in the industry sector. Due to potential hazards associated with battery welding, it is crucial to employ precise joining parameters and have good process control. We studied resistance spot welding of electrical conductors to lithium batteries. We focused on different energy sources and materials that are currently in use. We conducted a mechanical and metallographic analysis of resistance welds between the electrical conductors and lithium batteries. The findings indicate that the use of direct current energy sources, such as capacitor or inverter-based energy sources, result in higher mechanical strength of the first weld. Despite the substantial surface area and good mechanical strength in welds with insufficient fusion, we have determined that they are inappropriate for dynamic loads due to their low ductility. električni vodniki uporovno točkovno varjenje (UTV) serijsko varjenje litijeve baterije baterijski paketi optimalni parametri electrical conductors resistance spot welding (RSW) series welding lithium batteries battery packs optimal parameters true false false [V. Uran] Slovenski jezik Angleški jezik Magistrsko delo/naloga 2023-10-27 08:30:30 2023-10-27 08:30:34 2023-11-15 11:37:59 0000-00-00 00:00:00 2023 0 Ljubljana 0 XX, 67 str. 0000-00-00 NiDoloceno NiDoloceno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 621.791.763:621.352(043.2) 257799 172239875 32438.pdf 32438.pdf 1 70A0D4EAC730878C743FB8399F36568D ec00fd322e5dae7fc64fd56f311acc4161c20022bee6817ec52172be8cfd7ba9 52ff5ba0-7492-11ee-ad91-0050569b8976 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=177184 Fakulteta za strojništvo 0 0 0