( 電池の安全性 )
2023年3月21 - 22日
よりエネルギー密度の高い電池が市場に供給されるにつれて、最新技術の開発に対応して安全検査・規制を進歩させて、電池の安全機能を確保し消費者の便宜を図ることがますます重要となっています。今回の電池の安全性の部会では、国際電池セミナー・展示会の一部として、研究開発 (R&D) の大きな流れに対応するのに必要な、重要な電池規制・安全検査について検討します。監督官庁や関係機関、電池R&Dエンジニア、信頼性エンジニアが参集し、複雑化し続けるセル・パック設計に対する堅牢で信頼できる検査手法をどうやって開発しているのかを議論します。また、電池パックの安定性の維持や、熱暴走の緩和による安全性の改善といった議題も取り上げます。
- 4:45 pm Conference Tutorials8:00 am
Choose from 16 tutorials to maximize your networking and educational opportunities
Registration and Morning Coffee7:00 am
UNDERSTANDING INTERNAL SHORT CIRCUITS
Victoria Mosolgo, Conference Producer, Cambridge EnerTech
Investigating How Plastic Current Collectors Isolate Internal Shorts
Eric C. Darcy, PhD, Battery Technical Discipline Lead, Power Systems, NASA Johnson Space Center
Tests were performed inside our fractional thermal runaway calorimeter to quantify the heat transferred and its distributions and those runs done at a synchrotron yielded fascinating very high-speed X-ray videography. These show tolerance to nail penetration and activation of defect internal shorts and when thermally forced into thermal runaway, the heat output is significantly reduced.
Mitigating Internal Shorting to Enhance Battery Safety with Gradient-Conductivity Cathodes
Ping Liu, PhD, Professor and Director, Sustainable Power and Energy Center, University of California, San Diego
Internal short circuits and the resulting catastrophic battery failure is difficult to detect and can occur under normal working conditions. To enable future high-energy density batteries, particularly lithium metal, an inexpensive internal short protection scheme is required. Here, we selectively remove conductive carbon from the cathode surface, creating a gradient-conductivity electrode.
Comprehensive Failure Analysis of Solid Electrolyte Cells
Emily Klein, Materials Scientist, Energy Assurance
This presentation will focus on Solid Electrolyte (SE) cells and the Safety and Failure analysis considerations. The energy density of SE’s is the biggest draw since SEs are expected to satisfy energy and power requirements of electric vehicles and enabling electric aircraft. With increasing advancements in SE cells, it is important to have specialized abuse testing and failure analysis techniques that can determine performance and safety concerns.
Grand Opening Refreshment Break in the Exhibit Hall with Poster Viewing9:45 am
Analysis and Early Detection of Failing Automotive Batteries
Christiane Essl, Researcher, Battery Safety, VIRTUAL VEHICLE Research GmbH
This presentation shows the setup and results of three different thermal runaway triggers, different cell chemistries, and different aging paths of modern battery cells in a custom-made TR reactor. It focuses on the trigger overtemperature, overcharge, and nail penetration. The investigated cell types are state-of-the-art automotive cells. Different thermal runaway trigger methods, cell chemistries, and aging paths have an impact on the battery failing behavior. Results will be presented and discussed in the categories: thermal behavior, vent gas production, and vent gas composition. In the second part of the presentation, experimental results of the use of different gas sensors as early detectors of battery failures will be proposed.
Novel Aspects of Li-ion Battery Thermal Runaway: Cell Variability and Health Retention
Peng Zhao, PhD, Associate Professor, Mechanical, Aerospace & Biomedical Engineering, University of Tennessee
In this talk, we will disseminate our recent results on cell variability during thermal runaway test., with statistical analysis. Thermal runaway suspension with health retention will also be discussed.
Cathode Design for Safe Lithium-ion Batteries: Composition, Structure and Surface
Gui-Liang Xu, Chemist, Chemical Sciences & Engineering, Argonne National Laboratory
Layered lithium transition metal oxide are one of the most promising cathode materials for next-generation lithium-ion batteries due to their high specific capacity. However, they suffer from severe safety concerns due to their poor thermal stability. Herein, we have presented a comprehensive understanding of the failure mechanism and developed a series of approaches by tailoring the composition, structure and surface of layered cathodes to bypass the degradation pathway.
Bob Laudisi, Applications/Mechanical Engineering, Associated Environmental Systems
Concepts in Lean Methodologies lend naturally to safer, more efficient, battery testing. By creating a scenario for managing high-density testing in small batches, it increases safety and reduces cost per channel. Safety is increased by limiting propagation in the case of an event. Cost is reduced by utilizing standardized products.
Matthew Wang, Ph. D., Vice President of Technical Programs, Amionx
A discussion that will summarize the technology transfer of the process to include SafeCore in a scale battery manufacturing facility. SafeCore is a coating that acts like a fuse during an overcharge or short that will increase resistance of the cell and/or decompose and cause the electrode to separate from the current collector, thereby slowing the release of energy within the cell to help prevent thermal runaway.
Networking Luncheon12:30 pm
Dessert Break in the Exhibit Hall with Poster Viewing1:15 pm
PLENARY KEYNOTE PROGRAM
KEYNOTE FIRESIDE CHAT
Drew Baglino, Senior Vice President, Powertrain & Energy Engineering, Tesla
Drew has served as our Senior Vice President, Powertrain and Energy Engineering since October 2019. Previously, Drew served in various engineering positions continuously since joining Tesla in March 2006. Drew holds a B.S. in electrical engineering from Stanford University.
Delivering on Global Demand: Overcoming the Obstacles to Success
Matthew Howard, Chief Strategy Officer, Faraday Institution
This international panel of the key OEMs, Battery Manufacturers, Raw Materials Providers and Institutional Experts will take a deep dive into how the international battery community will deliver on the surging global demand for EVs. Addressing how the industry will achieve the volumes predicted is a key component to the success or failure of adoption of EVs around the world. The many issues that need to be addressed will include improvements needed to the supply chain, manufacturing capacity, mining, recycling methods, and regulatory compliance. The global battery industry is at a very important crossroads now that market demand has arrived. Will the industry be able to deliver? This unprecedented assembly of global experts will answer those questions and provide insight into the pathway forward.
David Howell, Principal Deputy Director, Office of Manufacturing and Energy Supply Chains, United States Department of Energy
SAFETY OF SECOND USE & CHEMISTRIES
Are Aged Cells More Dangerous than Fresh Cells?
Jun Xu, PhD, Associate Professor, Mechanical Engineering & Engineering Science, University of North Carolina, Charlotte
By combining mechanical abusive testing and physics-based models on commercialized cells with various state-of-health and state-of-charge, we discovered that the ISC triggering delays with the decay of SOH and soft ISC mode will be triggered more frequently, mainly due to the mechanical behaviors of the current collectors. The peak temperature during the subsequent TR also becomes milder for aged cells due to the reduced capacity and deterministic soft ISC process.
Battery Safety Analytics
Partha P. Mukherjee, PhD, Professor, Mechanical Engineering, Purdue University
Battery safety fundamentally relies on the underlying electrochemical-chemical-thermal interactions, involving complex interfaces and degradation mechanisms. Dependent on the battery chemistry and reaction pathways, intrinsic factors including the stability of the electrode/electrolyte interfaces, interphase growth, morphological behavior, and oxygen release has a distinct effect on the thermal stability response. In this presentation, a mechanistic framework, synergistically integrating electrochemical analytics, calorimetry, and physics-based modeling to probe the critical role of degradation-safety interactions will be discussed.
Thermal Study of Lithium Titanate Oxide-Based Lithium-ion Batteries
Seyed S. Madani, PhD, PostDoc, Karlsruhe Institute of Technology
A precise interpretation of Lithium-ion Battery (LIB) heat generation is indispensable for different applications including electric vehicles. The internal resistance of a lithium titanate oxide-based LIB was determined at different state of charge (SOC) levels and current rates to understand the relationship between internal resistance and heat generation. Random and different pulse discharge current step durations were applied to consider the effect of different SOC interval levels on the heat generation. The total generated heat was measured for different discharge rates and operating temp.
Reception in the Exhibit Hall with Poster Viewing5:15 pm
INTERACTIVE ROUNDTABLE DISCUSSIONS
Roundtable discussions are informal, moderated discussions with brainstorming and interactive problem-solving, allowing participants from diverse backgrounds to exchange ideas and experiences and develop future collaborations around a focused topic.
TABLE 1: Battery Raw Materials Supply Chain
Moderator: Robert M. Privette, Manager, Business Development, Rechargeable Battery Materials North America, Umicore USA, Inc.
TABLE 2: Li-ion NMC Fast Charging New Cells for E-Mobility
Moderator: Shmuel De-Leon, CEO, Shmuel De-Leon Energy Ltd.
TABLE 3: Li-ion Battery Safety: Prediction, Prevention, Levels and Legalities
Moderator: John Zhang, PhD, Senior Technology Executive Officer, Asahi Kasei SSBU Polypore, Celgard LLC
TABLE 4: Electrolyte Developments: New Components and Approaches
Moderator: Sam Jaffe, Vice President, Battery Solutions, E Source
TABLE 5: Battery Pack System Cost and Safety - Will Future xEV Battery Packs Increase in Complexity or Simplify and How Will Cost and Safety Be Impacted?
Moderator: Kevin Konecky, Battery and Energy Storage Systems Consultant, Total Battery Consulting
TABLE 6: Innovations in Recycling Battery Materials & Second Life
Moderator: Steven E. Sloop, President, OnTo Technology LLC
TABLE 7: Battery Management Systems
Moderator: Sheldon Williamson, PhD, Professor & Canada Research Chair, Electrical & Computer & Software Engineering, University of Ontario Institute of Technology
TABLE 8: Regulatory Initiatives & Transportation Safety
Moderator: Mike Pagel, Senior Consultant, Hazmat Safety Consulting
TABLE 9: Fire Safety Response
Moderator: Michael O'Brian, CEO, Code Savvy Consultants and Fire Chief, Brighton Area Fire Department
TABLE 10: Multi-Scale and Multi-Physics Modeling
Moderator: Lin Liu, PhD, Associate Professor, Mechanical Engineering, University of Kansas
TABLE 11: Using Synchrotron Tools to Build the Batteries of the Future at Canadian Light Source
Moderator: Jigang Zhou, PhD, Senior Industrial Scientist, Industry Services, Canadian Light Source, Inc.
TABLE 12: Safety in Transporting End of Life or DDR Batteries
Moderators: Joshua Davis, Scientist, U.S. Department of Transportation and Andrew Leyder, Program Analyst, Research, Development & Technology, U.S. Department of Transportation
TABLE 13: Requirements for Comprehensive Physical Characterization of Electrodes and Separators
Moderator: Martin Thomas, PhD, Lead Scientist, Product Competence, Anton Paar QuantaTec
TABLE 14: Energy Storage for the Grid
Moderator: Susan Babinec, Program Lead, Stationary Storage, Argonne Collaborative Center for Energy Storage Science (ACCESS), Argonne National Laboratory
TABLE 15: How Simulation and Modelling Tackle Battery Development Challenges?
Moderator: Waldemar Linares, Director of Advanced Simulation Technologies, AVL Mobility Technologies
TABLE 16: Opportunities and Barriers to Fast Charge in Automotive and Other Applications
Moderator: Brian Barnett, PhD, President, Battery Perspectives
Close of Day7:15 pm
Registration Open7:30 am
Utsav Panchamia, Manager Battery Systems Engineering, Engineering, Kautex
The materials and processes used to produce composite battery enclosures and underbody battery protection, such as those used for the Kautex Pentatonic™ Battery System, offer advantages over industry standard metal alternatives. Pentatonic has been validated to structural and safety industry standards, utilizing new technologies alongside a legacy of testing and safety expertise. Composite enclosures not only provide BEV safety and structural integrity, but also reduce cost, weight and CO2 emissions.
Donald Wright, Vice President, Engineering, Unico, LLC
Introduction into a new high power capable battery test platform from Unico which can combine multiple isolated channels of high voltage pack testing, high current module testing, and high current cell testing all in one system. This provides many channels of testing with a single building grid connection and offers increased efficiency by recirculating the energy between all the channels. Optional AC or DC BESS integration enables additional energy recycling capabilities.
Regulatory Initiatives that Can Impact Your Ability to Manufacture and Transport Lithium Batteries
Mike Pagel, Senior Consultant, Hazmat Safety Consulting
This presentation will cover the regulatory safety initiatives that are ongoing to develop a packaging standard for lithium batteries transported by aircraft and to regulate lithium batteries based on their inherent hazards including their ability to propagate from cell to cell and how violent they react when forced into thermal runaway.
Experimental and Numerical Study on the Burning Behaviors of Lithium-ion Batteries during Thermal Runaway
Ya-Ting Liao, PhD, Associate Professor, Case Western Reserve University
The presentation will start with a series of fire experiments using cylindrical and pouch Lithium-Ion Battery (LIB) cells. Venting gas compositions, venting rates, and fire behaviors will be compared in detail between different cell States of Charge (SOC). We will then present the concept and methodology to develop a physics-based numerical model for LIB fires using the data obtained in the experiments. Preliminary modeling results will also be shared.
Daniel Higgs, PhD, Director, Revenue, Iontra Inc
This presentation will provide conclusive electrochemical data showing how to safely achieve double the charge speed and double the cycle life on today's commercial cells. Iontra has spent the past several years in stealth mode understanding how batteries want to be charged, then providing them with a charging environment that results in maximum safety, minimal degradation, maximum cell health, faster charging, longer life, and lower temperature charging.
Nima Lotfi, PhD, Director, New Product Development, Bitrode Corp. Member of the Schuler Group
To facilitate integration of batteries into different applications, battery developers should ensure the conformance of their products to safety standards. Will review these safety considerations and outline the testing equipment that are traditionally used to test and certify safety conformance. We will then discuss the innovations that Bitrode is incorporating in its next generation of battery cyclers to facilitate and to streamline safety-related testing procedures in every stage of battery development.
Coffee Break in the Exhibit Hall with Poster Viewing10:00 am
NFPA 855: Explosion Control for Li-ion BESS
Matthew Paiss, Tech Advisor, Battery Materials & Systems, Pacific Northwest National Lab
With code requirements in NFPA 855 for explosion control, the mitigations for achieving this vary greatly in both complexity and reliability. We will discuss best practices emerging for deflagration prevention designs for BESS cabinets.
Lithium-ion Battery Fire Suppression - Module-Level Study
Taina Rauhala, Research Scientist, UL Research Institutes
When abused, lithium-ion batteries can go into thermal runaway, leading to smoke, fire, and high temperatures. Once ignited, lithium-ion battery fires can be difficult to extinguish, and re-ignitions are frequently observed. In this talk, we will summarize the experiments conducted with three different fire suppressants (water, nitrogen gas, and potassium-based aerosol) and lithium-ion modules of two different chemistries.
Gerard Quoirin, Dr, Battery Expert, Special Fluid, TotalEnergies Lubricants
Immersion cooling of a lithium battery is a good solution to control the heat generated by the cells during rapid charging or intensive use. It also seems that thanks to this technology: it is almost impossible to have a major failure of the battery: a fire or the propagation of a thermal runaway of the cell. Thanks to our work, we can demonstrate that this is indeed the case.
Networking Luncheon (Sponsorship Opportunity Available)12:45 pm
Dessert Break in the Exhibit Hall with Poster Viewing2:15 pm
PLENARY KEYNOTE PROGRAM
If a Lithium-ion Cell Can Operate for More Than 6 Months at 85°C How Long Can It Last at Ambient Temperature?
Jeff Dahn, FRSC, PhD, Professor of Physics and Atmospheric Science, NSERC/Tesla Canada Industrial Research Chair, Canada Research Chair, Dalhousie University
In a few of our recent papers, we have presented Li-ion cell designs with liquid electrolytes that give astounding lifetime at temperatures as high as 85°C. In fact, we have been testing these cells now at 100°C and they are operating well for more than one month so far. I will discuss what is required to make such awesome cells and then consider what their lifetime at ambient temperature might be. I will show that the energy density of these cells is very reasonable and that Co-free moderate-nickel designs also work equally well.
Next-Generation Batteries - An Update on Li Metal Battery and All Solid-State Battery
Shirley Meng, PhD, Professor, University of Chicago; Chief Scientist, Argonne Collaborative Center for Energy Storage Science, Argonne National Laboratory
With the recent success in deploying lithium-ion batteries for light-duty passenger cars, it is time for researchers and scientists to work on a road map of next-generation batteries beyond lithium-ion. In this talk, I will give an update on the current status of research efforts in enabling lithium metal batteries and all solid-state batteries. A few cutting-edge scientific tools will be introduced, including X-ray CT, Cryo-EM, Titration GC, and more, all aimed at quantitative understanding of the failure mechanisms of next-gen batteries.
Best of Show Exhibitor Award Ceremony & Refreshment Break in the Exhibit Hall with Poster Viewing4:00 pm
Close of Battery Safety Conference4:30 pm