Computer-aided engineering (CAE) is a proven pathway, especially in the automotive industry, to improve performance by resolving the relevant physics in complex systems, shortening the product development design cycle, thus reducing cost, and providing an efficient way to evaluate parameters for robust designs. Academic models include the relevant physics details, but neglect engineering complexities. Industry models include the relevant macroscopic geometry and system conditions, but simplify the fundamental physics too much. Most of the CAE battery tools for in-house use are custom model codes and require expert users. There is a need to make these battery modeling and design tools more accessible to end users such as battery developers, pack integrators, and vehicle makers. Developing integrated and physics-based CAE battery tools can reduce the design, build, test, break, re-design, re-build, and re-test cycle and help lower costs. NREL has been involved in developing various models to predict the thermal and electrochemical performance of large-format cells and has used in commercial three-dimensional finite-element analysis and computational fluid dynamics to study battery pack thermal issues. These NREL cell and pack design tools can be integrated to help support the automotive industry and to accelerate battery design.

This presentation uses a vehicle simulator and economics model called the Battery Ownership Model to examine the levelized cost per mile of conventional (CV) and hybrid electric vehicles (HEVs) in comparison with the cost to operate an electric vehicle (EV) under a service provider business model. The service provider is assumed to provide EV infrastructure such as charge points and swap stations to allow an EV with a 100-mile range to operate with driving profiles equivalent to CVs and HEVs. Battery cost, fuel price forecast, battery life, and other variables are examined to determine under what scenarios the levelized cost of an EV with a service provider can approach that of a CV. Scenarios in both the United States as an average and Hawaii are examined. The levelized cost of operating an EV with a service provider under average U.S. conditions is approximately twice the cost of operating a small CV. If battery cost and life can be improved, in this study the cost of an EV drops to under 1.5 times the cost of a CV for U.S. average conditions. In Hawaii, the same EV is only slightly more expensive to operate than a CV.

This presentation was written and presented by Elizabeth Doris (NREL) at the November 17 TAP Webinar to provide background detail about how state policies are transforming the clean energy market in different regions of the country.

Invited Tutorial presented as part of AMS International Short Course Series.

This presentation describes the multi-physics behaviors of internal and external short circuits in large lithium-ion batteries.

This presentation outlines a history of PV field experience.

This presentation discusses about promoting healthy debate on environmental issues and creating appropriate reading lists on environmental science topic areas.

A presentation discussing the Lead and Copper Rule (LCR) and how the EPA is in the process of developing revisions to the rule.

This presentation discusses digital curation, preservation and stewardship. The author provides information on Curation Micro-Services.

This presentation summarizes Entering a New Stage of Learning from the U.S. Fuel Cell Electric Vehicle Demonstration Project.

This presentation outlines utility concerns when evaluating PV technologies for risk.

This presentation discusses the challenges and opportunities of wind energy.

Laboratories run around-the-clock aging tests to try to understand as quickly as possible how long new Li-ion battery designs will last under certain duty cycles. These tests may include factors such as duty cycles, climate, battery power profiles, and battery stress statistics. Such tests are generally accelerated and do not consider possible dwell time at high temperatures and states-of-charge. Battery life-predictive models provide guidance as to how long Li-ion batteries may last under real-world electric-drive vehicle applications. Worst-case aging scenarios are extracted from hundreds of real-world duty cycles developed from vehicle travel surveys. Vehicles examined included PHEV10 and PHEV40 EDVs under fixed (28 degrees C), limited cooling (forced ambient temperature), and aggressive cooling (20 degrees C chilled liquid) scenarios using either nightly charging or opportunity charging. The results show that battery life expectancy is 7.8 - 13.2 years for the PHEV10 using a nightly charge in Phoenix, AZ (hot climate), and that the 'aggressive' cooling scenario can extend battery life by 1-3 years, while the 'limited' cooling scenario shortens battery life by 1-2 years. Frequent (opportunity) charging can reduce battery life by 1 year for the PHEV10, while frequent charging can extend battery life by one-half year.

Advancements in vehicle electronics, along with communication and sensing technologies, have led to a growing number of intelligent vehicle applications. Example systems include those for advanced driver information, route planning and prediction, driver assistance, and crash avoidance. The National Renewable Energy Laboratory is exploring ways to leverage intelligent vehicle systems to achieve fuel savings. This presentation discusses several potential applications, such as providing intelligent feedback to drivers on specific ways to improve their driving efficiency, and using information about upcoming driving to optimize electrified vehicle control strategies for maximum energy efficiency and battery life. The talk also covers the potential of Advanced Driver Assistance Systems (ADAS) and related technologies to deliver significant fuel savings in addition to providing safety and convenience benefits.

Presentation discussing the DataRes and the CLIR/Sloan Research Projects on data management policies and practices. This presentation discusses these two collaborating projects researching emerging policies and practices in data management. These research projects are being undertaken by the Council on Library and Information Resources and the University of North Texas (UNT).

This presentation discusses the NREL/CCSE PEV battery second use project.

This presentation discusses the digitization project of the Gordon Knox film collection. The University of North Texas (UNT) Media Library began working with the donors and assessing the project plan for digitizing this collection in 2007 and the films were made available in the UNT Digital Library in 2010. This presentation describes the strategies, initial challenges, processes, and lessons learned from working on this project.

This presentation summarizes findings of NREL's Renewable Electricity Futures study, published in June 2012. RE Futures investigated the challenges and impacts of achieving very high renewable electricity generation levels in the contiguous United States by 2050.

Presentation for the 2012 All School Day at the University of North Texas (UNT). This presentation discusses open access initiatives at UNT, scholarly communication trends, data management, the UNT Scholarly Works institutional repository, and resources available through the UNT Libraries.

This presentation is part of the faculty lecture series UNT Speaks Out on Coming Home. The author discusses methods and findings from a project she participated in related to how veterans narrated their experiences through art. Her component of the study evaluated participants and described what they gained through creating arts and crafts.

This presentation is part of the faculty lecture series UNT Speaks Out on Coming Home. The author has a grant from the National Institute of Health (NIH) and the National Institute of Mental Health (NIMH) on innovative approaches to understanding and treating PTSD. In this presentation, the author discusses PTSD and other responses to trauma and stress.

This presentation is part of the faculty lecture series UNT Speaks Out on Coming Home and discusses the reintegration of veterans and families. The author directs the Family Attachment Lab and is conducting the Student Veteran Research Project. In this presentation, she discusses the family relationships of veterans after deployment.

This presentation combines session slides from the 2012 International Internet Preservation Consortium sponsored workshop on "How to fit in? Integrate a web archiving program in your organization. This workshop aims to investigate the challenges and methods involved in implementing web archiving in all mainstream activities of a heritage institution.

Presentation for the 2013 Conservation Savvy: From Expert to DIY Conference. This presentation discusses adventures in digital preservation and how not to lose your way.