Selection of adhesives and their removal methods for battery pack
2023 (English)Independent thesis Advanced level (degree of Master (One Year)), 10 credits / 15 HE credits
Student thesis
Abstract [en]
This thesis report compares adhesives commonly used in battery packs and methods of debonding adhesives. The comparison was made concerning finding less carbon dioxide (CO2) emission adhesive for the bonding process and less CO2 emission debonding process. Andrea Temporelli's articles say a recent study estimates 500,000 premature deaths yearly due to European Union. Using vehicles powered by fossil fuels has significantly contributed to CO2 emissions and air pollution. Eckard Helmers's and Roeland Bisschop's articles say electric vehicles have been identified as a critical technology in reducing future emissions and energy consumption in the mobility sector. Most fuel-powered vehicles operate below 50% efficiency, but electric vehicles' operating efficiency is 95%. This is one of the reasons for the recent massive growth of the electric vehicle market, which directly implies the number of lithium-ion batteries for electric cars globally. But the Battery remains the most expensive part of a battery-electric vehicle. So, a minimum lifetime of 10 years is demanded by the user. This raises the question of the next step for processing end-of-life lithium-ion batteries. Gavin Harper's discussion says the environmental footprint of manufacturing electric vehicles is heavily affected by the extraction of raw materials and production of lithium-ion batteries. Martin Brand’s article discusses the possible 2nd - life application of aged BEV-battery modules. The metals from the end-of-life Li-ion batteries should be retained for recycling and reuse, which can reduce the extraction of raw materials. Chengjian Xu ‘s article provides information about the future demand for key battery materials, considering potential electric vehicle fleet and battery chemistry developments as well as second-use and recycling of electric vehicle batteries.
To avoid human intrusion in the recycling and reuse process, it should be reduced, and instead, robots should be used. However, complete automation for battery recycling is only possible when the design of battery packs is standardized worldwide and produced on a large scale. So, efforts have been made in this study to support a robotic removal of adhesive parts in the battery pack that includes finding an efficient, cheap, and less CO2 emissive adhesive and bonding process with a recommendation for adhesive removal which facilitates the battery recycling process using robots specifically for prismatic cell battery pack by achieving this, parts in the battery pack are often secured using adhesive materials, making their removal an easy task.
Place, publisher, year, edition, pages
2023. , p. 40
Keywords [en]
battery recycling, automation, adhesive removal
National Category
Electrical Engineering, Electronic Engineering, Information Engineering
Identifiers
URN: urn:nbn:se:hv:diva-20607Local ID: EXE700OAI: oai:DiVA.org:hv-20607DiVA, id: diva2:1788533
Subject / course
Electrotechnology
Educational program
Master Programme in Electric vehicle engineering
Supervisors
Examiners
2023-08-212023-08-162023-08-21Bibliographically approved