Overview of Optical Digital Measuring Challenges and Technologies in Laser Welded Components in EV Battery Module Design and Manufacturing

Ensuring the precision and repeatability of component assembly in the production of electric vehicle (EV) battery modules requires fast and accurate measuring methods. The durability of EV battery packs depends on the quality of welded connections, therefore exact positioning of the module components is critical for ensuring safety in exploitation. Laser welding is a non-contact process capable of welding dissimilar materials with high precision, for that reason it has become the preferred joining method in battery production. In high volume manufacturing, one of the main production challenges is reducing the time required for assessment of dimensional and geometrical accuracy prior to joining. This paper reviews the challenges of EV battery design and manufacturing and discusses commercially available scanner-based measurement systems suitable for fabrication of battery pack components. Versatility of novel metrological systems creates new opportunities for increasing the production speed, quality and safety of EV battery modules</p

18th Nordic Laser Materials Processing Conference (18th NOLAMP) 18th-20th January 2022, Luleå, Sweden

Evolution of additive manufacturing has allowed increased flexibility and complexity of designs over conventional manufacturing e.g. formative and subtractive manufacturing. Restricting factor of laser powder bed fusion of metals (PBF-LB/M) additive manufacturing is the as built surface quality. To promote an understanding of the surface roughness and suitable surface measuring technologies octagon shaped tool steel 1.2709 samples was developed and manufactured. Different surface measuring technologies was also literary reviewed. Studied samples were manufactured with commercially available laser-based powder bed fusion system using standard parameter set provided by the system manufacturer. Surface roughness was measured from top and down skins from multiple different building angles in a way that process specific effects, such as direction of movement of the powder re-coater, was considered. Based on these measuring results of the samples the effect surface inclination are discussed. The results show that building angle strongly affects to surface roughness of laser-based powder bed fused parts. Surface roughness was measured to be more than five times worse in unsupported angle manufactured down facing surfaces when compared with vertical walls

Road to Shipyard 4.0: The state of play, a brief history of maritime developments, and a future roadmap Focusing on the Baltic Sea and Shipyards

ECOPRODIGI is an initiative of the EU-Interreg Baltic Sea Programme, whose mission is to improve and promote the eco-efficiency of shipping and maritime operations. This report is a product of the work package 4 (WP4); a foresight exercise, whose mandate is to provide a roadmap for the future of maritime operations in the Baltic Sea Region with a focus on shipbuilding and shipyard operations. A sister publication exists that provides a policy-innovation roadmap for Ro-Ro shipping, entitled Maritime in the 21st century.This report is a product of inter-disciplinary collaboration. At the core of the team are the consortium members. Early drafts were validated through consultation with experts, and results were then summarised and validated together with wider industry and policy actors through surveys. For more information on the methodology, see Appendix 2.The potential users of this roadmap include a wide variety of stakeholders. Policy makers can use it as an agenda-setting reference for promoting and championing eco-efficient policies, regulations, and standards. Industry stakeholders can use it to check against their own strategies for coherence. Researchers can use it to anticipate questions that might be of particular relevance over the next decade. Technology developers can use it to benchmark against their own expectations for technology development. In all, this roadmap can be a starting point for discussion so that all stakeholders can move together into the future, forward, by sharing the expectations for development in order to coordinate action to enact eco-efficiency in the Baltic Sea and beyond.The report is organised as follows. The introduction will lay out the current state-of-play of eco-efficiency and the zeitgeist of the current situation on maritime that we find ourselves in, in 2020. The next section will provide some historical context looking back to 2010 and 2000 to trace the trajectory and developmental course that we are on.The core contribution of this report is the Shipyard 4.0 Roadmap, that can be found in Figure 1 on page 9. This illustration plots the expectations for technological capabilities and policy from 2020 to 2030. The descriptions of the elements of the roadmap are provided in Appendix 1.It should be acknowledged that the current COVID-19 pandemic has played a significant role in societies during the development of this roadmap. Indeed, the injection of such uncertainty has caused the authors of this report to reflect quite significantly. The ECOPRODIGI consortium considers this of utmost concern and thus requests that users of this roadmap take the status of the pandemic into consideration when using this roadmap. As it had always been thought of as a working roadmap of the future since its beginning, prudence is required in its use and it should be suggested that users create their own updates and assessments in an ongoing fashion as the future unfolds