Ispitivanje električnih svojstava baterijskih ćelija električnih vozila

master's thesis

• Title (english): Electrical properties of battery cells of electric vehicles
• Author: Romana Milazzi Kovačević
• Mentor: Suzana Jakovljević (mentor)
• Granter: University of Zagreb; Faculty of Mechanical Engineering and Naval Architecture; Zagreb
• Defense date and country: 2024-05-16, Croatia
• Scientific / art field, discipline and subdiscipline: TECHNICAL SCIENCES; Mechanical Engineering

Abstract

Srce svakog električnog vozila je baterija, sastavljena od stotina baterijskih ćelija. Kvaliteta ćelije određuje kvalitetu, svojstva i životni vijek električnog vozila. Mehanička oštećenja ćelija česta su pojava u praksi, no još uvijek nije u potpunosti poznat njihov izravan utjecaj na mikrostrukturu i električna svojstva. U ovom radu ispitivan je utjecaj udubina i ogrebotina na električna svojstva čeličnih i aluminijevih cilindričnih litij-ionskih baterijskih ćelija. Tijekom 39 dana mjerene su unutarnje temperature, napon i otpor baterijskih ćelija. Pokazano je kako promatrana mehanička oštećenja nemaju značajan utjecaj na brzinu pražnjenja baterijskih ćelija, ali da nisu nimalo zanemariva i bezopasna.

Abstract (english)

Battery, the heart of the electric vehicle, is assembled from hundreds of cells. The quality, final properties and life span of electric vehicles are connected to quality of their batteries. It's still not fully discovered how mechanical damages affect the electrical properties and microstructure of battery cells. This master's thesis studies the impact that dents and scratches have on the electrical properties of steel and aluminum cylindrical lithium-ion battery cells. Internal temperature, voltage and resistance were measured during 39 days. Study shows dents and scratches don't affect the discharge rate significantly but they are still harmful and should be avoided if possible.

• Keywords: električno vozilo; baterije; ćelije; mehanička deformacija; električna svojstva
• Keywords (english): electric vehicle; battery; cells; mechanical deformations; electrical properties
• Language: croatian
• URN:NBN: urn:nbn:hr:235:020724
• Study programme: Title: Mechanical Engineering; Study programme type: university; Study level: graduate; Academic / professional title: magistar/magistra inženjer/inženjerka strojarstva (magistar/magistra inženjer/inženjerka strojarstva)
• Type of resource: Text
• File origin: Born digital
• Access conditions: Embargoed access; Embargo expiration date: 2029-05-16
• Created on: 2024-05-22 05:54:53