Showing 9–12 of 106 results

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    How to Safely Select DC Fuses for EES Systems

    Proper selection of direct current (DC) overcurrent fuses is not as simple as it may seem, and several factors need to be looked at for proper selection. Design engineers need to look at many different things such as what we’re protecting, system voltage changes, circuit fault currents, minimum breaking currents, mechanical requirements, temperature deratings, system operation regarding cycling, etc. All of these and other factors need to be taken into consideration to safely select the proper DC fuse for each unique application. This presentation will take you through the basics of DC and AC fuses, DC circuit protection methods, and review EES fuse selection along with a case study. With the rapid growth of Electrical Energy Storage systems being implemented and deployed, we see an opportunity to educate everyone on this topic.

    This webinar will focus on the following key topics:

    • Fuseology
    • Fuse Selection Practices
    • DC Circuit Protection
    • EES Fuse Selection Methodology
    • Case Study

    Presenter
    Cynthia Cline – Principal Solutions Engineer at Mersen

    Cynthia Cline, is Mersen’s Principal Solutions Engineer and has over 35 years of experience with customer applications and providing detailed circuit analysis to meet customer needs with AC and DC fuse protection. She is also active with codes and standards for UL and IEC protection products. She graduated with a degree in Electrical Power Systems from Michigan Technological University.

    Mersen is a proud sponsor of this event.

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    The Role of All-Solid-State Batteries for Grid Energy Storage

    All solid-state batteries (ASSBs) are widely believed to be a promising technology for next-generation energy storage. While Li-ASSBs are slated to serve the electric vehicles market, Na-ASSBs are a promising technology for electrical grid storage due to their lowered costs and longevity. Prevailing obstacles to commercialization include poor cathode interfacial stability, and the lack of a robust sodium anode, in addition to low areal capacities. In this webinar, we will discuss design strategies to enable stable interfaces, as well as utilize sodium alloy-based anodes to enable ASSBs with higher energy densities, longer cycle life, and longer calendar life.

    This webinar will focus on the following key topics:

    • State-of-the-art Na solid-state batteries and their role for grid energy storage applications
    • Low cost, novel solid electrolytes enabling long cycle life via interface stabilization
    • Na alloy-based anodes eliminating dendrite formation and enabling wide temperature operation
    • Processing considerations to achieve high areal capacities for high energy densities

    Presenters
    Darren H. S. Tan – Co-Founder at UNIGRID LLC
    Dr. Erik A. Wu – CTO at UNIGRID LLC

    Darren H. S. Tan is a Co-Founder of UNIGRID LLC, an energy storage company based on cutting edge ASSB technologies. He is a PhD candidate leading the ASSB research work at UC San Diego at the Sustainable Power and Energy Center (SPEC).

    Dr. Erik A. Wu is the Chief Technology Officer of UNIGRID LLC, where he leads the development of Na-ASSBs for large scale grid energy storage applications, and is a recent alumnus of the Laboratory of Energy Storage and Conversion at UC San Diego.

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    Effects of Partial Nail Penetration on Li-ion Pouch Cell Operation

    While many technological advancements have recently been made to ensure Li-ion batteries operate safely during normal cycling, many hazards exist when it comes to operation in abusive environments. Physical damage to batteries can lead to decreased performance and increased operating temperatures. This often causes thermal runaway, which in severe cases can lead to combustion and possibly explosion. In order to design cells in a way that mitigates these dangerous outcomes, it is important to understand what happens when a battery experiences physical abuse and continues to operate. This work focuses on the operational effects and indications for cells that operate in abusive environments where physical damage can be a concern.

    This webinar will focus on the following key topics:

    • Dynamic impact testing on Li-ion pouch cells
    • Operational indications of cell damage
    • Quantifying accelerated capacity fade due to physical damage
    • Effect of increased operating temperature on coulombic efficiency
    • Incremental capacity analysis for investigation into aging mechanisms

    Presenter
    Casey Jones – Ph.D. Candidate at Purdue University

    Casey Jones is a PhD student in the School of Aeronautics and Astronautics at Purdue University, where he works in the Interfacial Multiphysics Laboratory for Dr. Vikas Tomar. His research focuses on destructive testing of Li-ion batteries and the characterization of the effects on cell operation and is funded by the Office of Naval Research. Prior to studying at Purdue he served in the US Navy as a nuclear electronics technician aboard a fast-attack submarine based in Pearl Harbor, and received his BS in Mechanical Engineering from the University of Hawai’i at Manoa.

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    Battery Safety Analytics

    Despite their unrivaled performance and longevity, Lithium Ion batteries (LIBs) are also increasingly recognized as a safety hazard, especially in large scale energy storage installations. Although high-voltage battery packs and modules can be subject to numerous failure modes which are not present at the single cell scale, safety testing on full-scale battery packs can be prohibitively expensive and highly destructive to perform. In this talk, we demonstrate the importance of combining safety testing at the material, cell, and module scales to enhance the design of cells and packs which may mitigate the potential for catastrophe. Strategies to minimize full-scale testing requirements through a combination of carefully designed single cell tests and physics-based modeling are explored.

    This webinar will focus on the following key topics:

    • Bridging the gaps between safety concerns at single cell and module levels
    • Experimental characterization of li-ion cells under abusive conditions
    • Use of reference electrode instrumentation for degradation mode characterization
    • Selection of safe battery materials to enhance cell and module level safety
    • Role of modeling in ensuring safe battery design

    Presenter
    Conner Fear – Senior Ph.D. Candidate at Purdue University

    Conner Fear is a senior Ph.D. candidate in the School of Mechanical Engineering at Purdue University. He is the laboratory manager of the Energy and Transport Sciences Laboratory (ETSL, https://engineering.purdue.edu/ETSL/), where he works under the guidance of Dr. Partha Mukherjee. Conner’s research interests include thermal safety and degradation of lithium-ion batteries, especially under extreme conditions such as fast charging and overdischarge. Throughout his studies, Conner has worked in the U.S. Naval Research Laboratory Chemistry Division with the team of Dr. Corey Love. His work is funded by the Office of Naval Research (ONR) Naval Undersea Research Program (NURP).

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