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Modelling and design of structural batteries with life cycle assessment
KTH, School of Engineering Sciences (SCI), Aeronautical and Vehicle Engineering, Lightweight Structures.ORCID iD: 0000-0002-1194-9479
(RISE IVF AB)
(RISE IVF AB)
KTH, School of Engineering Sciences (SCI), Aeronautical and Vehicle Engineering, Lightweight Structures.ORCID iD: 0000-0002-9744-4550
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2019 (English)Conference paper, Published paper (Other academic)
Abstract [en]

A multifunctional structural battery consisting of carbon fibers, lithium-electrode coatings and a structural battery electrolyte is investigated with an analytical bottom-up model. This model has a multiphysics approach, calculating both mechanical properties and electrical energy storage. The intention of the model is twofold; first, calculating the potential mass saving with using a structural battery instead of the combination of a monofunctional carbon fiber composite and a monofunctional lithium ion battery. Second, the model is used to investigate the behavior of the mass saving due to changing variables of the structural battery. This variable sensitivity analysis is made in order to understand the behavior of the structural battery and its sensitivity to the different construction variables. The results show that the structural battery can save up to 26% of mass compared to the monofunctional parts.

Next, the model of the structural battery is further utilized in a life cycle assessment, where the manufacturing, usage and recycling of the structural battery is investigated. The life cycle assessment examines the structural battery as the roof of an electric vehicle. This analysis is compared to the same assessment for a steel roof and standard lithium ion batteries, which shows that manufacturing the carbon fibers and structural battery with clean energy is most important for decreasing the emissions from manufacturing.

Place, publisher, year, edition, pages
2019.
Keywords [en]
mass saving, structural battery, life cycle assessment, LCA
National Category
Composite Science and Engineering
Identifiers
URN: urn:nbn:se:kth:diva-258215OAI: oai:DiVA.org:kth-258215DiVA, id: diva2:1349878
Conference
22nd INTERNATIONAL CONFERENCE ON COMPOSITE MATERIALS (ICCM22)
Funder
Swedish Research Council Formas, 2017-03898Swedish Research Council Formas, 621-2014- 4577VinnovaSwedish Energy AgencyClean Sky 2, 738085XPRES - Initiative for excellence in production research
Note

QC 20190917

Available from: 2019-09-10 Created: 2019-09-10 Last updated: 2019-09-17Bibliographically approved

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Johannisson, WilhelmZenkert, DanLindbergh, Göran

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