Ispitivanje učinkovitosti različitih načina hlađenja vrećastih baterijskih ćelija

master's thesis

• Title (english): Investigation of efficiency of different cooling methods for pouch battery cells
• Author: Karla Smolčić
• Mentor: Irena Žmak (mentor)
• Granter: University of Zagreb; Faculty of Mechanical Engineering and Naval Architecture; Zagreb
• Defense date and country: 2024-12-05, Croatia
• Scientific / art field, discipline and subdiscipline: TECHNICAL SCIENCES; Mechanical Engineering; General Mechanical Engineering (Construction)

Abstract

U diplomskom radu provedeno je ispitivanje hlađenja vrećastih ćelija na četiri ćelije, pri čemu
je svaka podvrgnuta različitoj vrsti hlađenja. Svaka ćelija opremljena je s 28 temperaturnih
senzora, ravnomjerno raspoređenih po površini, kako bi se osiguralo precizno praćenje
temperature tijekom ispitivanja. Ispitivanje je provedeno prema unaprijed definiranoj ispitnoj
proceduri, a svaki slučaj hlađenja obuhvaćao je nekoliko podslučajeva.
U prvom slučaju analizirano je hlađenje terminala: najprije pozitivnog, zatim negativnog, a
potom oba terminala istovremeno. Drugi slučaj uključivao je hlađenje jedne strane ćelije, a
zatim obje strane. U trećem slučaju ispitano je hlađenje jednog ruba ćelije, kao i oba ruba
istovremeno. Konačno, četvrti slučaj primijenio je kombinirano hlađenje, koje je obuhvatilo
hlađenje terminala i strana ćelije.
Rezultati pokazuju da je četvrti, kombinirani način hlađenja najučinkovitiji. Ovaj pristup
omogućio je postizanje najnižih i najravnomjernijih temperatura tijekom ispitivanja,
osiguravajući optimalne toplinske uvjete za rad ćelije. Zaključci istraživanja ističu važnost
kombiniranog pristupa hlađenju za učinkovito toplinsko upravljanje u vrećastim ćelijama.

Abstract (english)

The Masters’ thesis presents the cooling examination of pouch cells, which was conducted on
four cells, each subjected to a different type of cooling. Each cell was equipped with 28
temperature sensors, evenly distributed across its surface, to ensure precise temperature
monitoring during the tests. The testing was carried out according to a predefined test
procedure, with each cooling scenario comprising several sub-cases.
In the first scenario, terminal cooling was analyzed: first the positive terminal, then the negative
terminal and finally both terminals simultaneously. The second scenario involved cooling one
side of the cell, followed by cooling both sides. In the third scenario, cooling of one edge of the
cell was tested, as well as cooling of both edges simultaneously. Finally, the fourth scenario
implemented combined cooling, which included cooling of the terminals and the sides of the
cell.
The results indicate that the fourth, combined cooling method was the most effective. This
approach achieved the lowest and most uniform temperatures during testing, ensuring optimal
thermal conditions for cell operation. The study’s conclusions highlight the importance of a
combined cooling approach for efficient thermal management in pouch cells.

• Keywords: Vrećasta ćelija; temperaturni senzori; rashladni sustav; rashladni postav; ispitna procedura; terminali ćelije
• Keywords (english): Pouch cell; temperature sensors; cooling system; cooling setup; test procedure; cell terminals
• Language: croatian
• URN:NBN: urn:nbn:hr:235:504970
• Study programme: Title: Mechanical Engineering; specializations in: Design, Process and Energy Engineering, Production Engineering, Engineering Modelling and Computer Simulation, Marine Engineering, Industrial Engineering and Management, Materials Engineering, Mechanics and Robotics, Autonomous Systems, Mechatronics and Robotics; Course: Materials Engineering; Study programme type: university; Study level: graduate; Academic / professional title: sveučilišni/a magistar/magistra inženjer/inženjerka strojarstva (sveučilišni/a magistar/magistra inženjer/inženjerka strojarstva)
• Type of resource: Text
• File origin: Born digital
• Access conditions: Embargoed access; Embargo expiration date: 2029-12-05
• Created on: 2024-12-05 19:33:38