2017 Archived Content

Battery Safety 2017 image

Final Week to Register - Avoid the On-Site Fee!

Higher energy and higher use lead to higher risk. While research continues to boost the energy storage capability of lithium-ion batteries (LIBs) and leads to expanding applications and consumer use, the task of implementing effective safety strategies falls on regulatory authorities, cell manufacturers, R&D engineers and forensic scientists. Accurate tests and models are critical for predicting and controlling the complex electrochemical, thermal and mechanical behavior of LIBs while forensic investigations and regulations are required for safe transport. The Battery Safety 2017 conference continues this vital dialogue to integrate and implement LIB safety to meet ever-increasing energy demands.

Final Agenda

Tuesday, October 31

5:30-8:30 pm Dinner Workshop*

W2: Battery Safety Training Tutorial

Instructor: Shmuel De-Leon, CEO, Shmuel De-Leon Energy, Ltd.


*Separate registration required.


Wednesday, November 1

5:00 pm Registration for Battery Safety Conference

5:30 Welcome Reception in the Exhibit Hall with Poster Viewing

6:30 Close of Day


Thursday, November 2

8:00 am Morning Coffee

Engineering Safety with Chemistry & Materials

8:30 Organizer’s Welcome

Mary Ann Brown, Executive Director, Conferences, Cambridge EnerTech

8:35 Chairperson’s Opening Remarks

Judith Jeevarajan, Ph.D., Research Director, Electrochemical Safety, Underwriters Laboratories, Inc.


8:45 FEATURED PRESENTATION: Increasing the Intrinsic Safety of Lithium-Ion Batteries

Falko_SchappacherFalko Schappacher, Ph.D., Managing Director and Head, Cell System Division, MEET Battery Research Center, University of Münster

There are several ways to increase the safety of lithium-ion batteries. Measures can be taken on the system (BMS) or cell level (CID, PTC) to overcome critical events like overcharge or external short circuit, but when it comes to an internal failure, these measures are not effective. Hence it is important to increase the intrinsic safety of LIB on the chemistry level.

9:20 Battery Safety: A Materials Chemistry Perspective

Arumugam_ManthiramArumugam Manthiram, Ph.D., Director, Texas Materials Institute; Professor, Mechanical Engineering, University of Texas at Austin

The intrinsic chemistry of the electrode and electrolyte materials used in a battery as well as cell engineering will have a profound influence in controlling battery safety. This presentation focuses on the role of materials chemistry, particularly bulk composition, surface composition, electrode-electrolyte interaction, chemical species crossover from one electrode to another, and metal-dendrite formation and growth.

9:55 The Road to Safe, High-Performance Energy Storage Is Paved with Zinc

Joseph F. Parker, Ph.D., Research Chemist, Chemistry Division, U.S. Naval Research Laboratory

Lithium-ion dominates the energy storage landscape yet remains under threat of catastrophe. Zinc batteries also provide high specific energy while countering with the inherent safety of aqueous electrolytes. Traditional zinc anodes suffer from suboptimal capacity and cyclability, forming short-inducing dendrites upon charging. We redesigned the zinc as a “sponge” architecture that achieves >95% theoretical capacity and dendrite-free cycling.

10:30 Coffee Break in the Exhibit Hall with Poster Viewing

Battery Failure Mode and Effect Analysis (FMEA)

11:00 FEATURED PRESENTATION: Battery Diagnosis and Prognosis for Battery Safety Design and Mitigation

Boryann_LiawBoryann Liaw, Ph.D., Department Manager, Energy Storage and Advanced Vehicles, Idaho National Laboratory

Lithium-ion batteries (LIBs) continue to play a prevailing role in energy storage and power source applications. As performance requirement and specification become more demanding, the battery system configuration and integration are getting complicated as well. It is inevitable that battery performance, durability, reliability and safety issues thus continue to escalate as great concerns among end users, system integrators, battery manufacturers and regulators. Addressing these battery performance issues may require a more advanced approach than what is perceived today. For instance, the traditional design of experiments, optimization and testing might not be able to provide the precision and accuracy in validating battery design parameters to ensure the desired performance requirements are met for durability, reliability and safety in operation. Battery failure mode and effect analysis could provide the enabling techniques to address these battery performance issues. Successfully implementing such practices requires an advanced battery diagnosis and prognosis approach. This presentation is intended to discuss this aspect and to explain what would it take to establish such diagnostic and prognostic capabilities currently undertaken at Idaho National Lab.

11:35 FEATURED PRESENTATION: Thermal Runaway Modeling of Lithium-Ion Battery Abuse

Ahmad_PesaranAhmad Pesaran, Ph.D., Chief Energy Storage Engineer, National Renewable Energy Laboratory


12:10 pm Non-Chromium Soft Packaging Without Chromate Treatment

Masa_TatewakiMasa Tatewaki, Vice President, Toppan USA, Inc.

Along with the increase of lithium ion battery consumption, the issue also raised how to dispose of those battery without impacting the environment. REACH-SVHC already announced Sunset date for Sodium dichromate and chromic anhydride as 9/21/2017. In this session, review current material issue; Chromate compound has been used for lithium ion packaging and present a solution without using Chromate treatment.

12:40 Session Break

12:45 Luncheon Presentation (Sponsorship Opportunity Available) or Enjoy Lunch on Your Own

1:15 Session Break

Advanced Battery Safety Diagnostics

2:00 Chairperson’s Remarks

Boryann Liaw, Ph.D., Department Manager, Energy Storage and Advanced Vehicles, Idaho National Laboratory


2:05 FEATURED PRESENTATION: Characterizing Battery Failure Using Multi-Scale X-Ray Imaging

Paul_ShearingPaul Shearing, Ph.D., Reader, Chemical Engineering & Materials, Department of Chemical Engineering, University College London

Battery electrode materials are complex hierarchical structures, where heterogeneities at microscopic length scales are thought to drive macroscopic failure mechanisms. As these materials are likely to evolve over time, in response to a range of processing and environmental conditions the relationship between the electrode microstructure and the cell performance evolves: understanding how these changes in microstructure can be linked to understanding of degradation and failure is pivotal to improving device lifetime and safety. The increasingly widespread use of tomography has revolutionized our understanding of these materials. With increasing sophistication researchers have been able to characterize samples over multiple time and length scales from nm to mm and from ms to days. Here we consider examples of our work to explore these materials in three and "four" dimensions, presenting case studies ranging from characterization of transport phenomena at nano-meter length scales, to exploring battery failure at millisecond time scales with a particular focus on the use of these tools to understand degradation and failure processes.

2:40 FEATURED PRESENTATION: Nano-Photonic Polymer Sensors for Enhanced Battery State Monitoring

Wolfgang_SchadeWolfgang Schade, Ph.D., Head of Department, Fiber Optical Sensor Systems, Fraunhofer Heinrich Hertz Institute


KULR3:15 Lithium-Ion Battery Thermal Management Solution to Prevent Temperature Damage to Cells and Thermal Runaway Propagation

Michael Mo, CEO, KULR Technology

Battery overheating can cause permanent damage to cells and thermal runaway propagation throughout battery pack. Lithium metal plating, which occurs in cold temperature, can cause rapid aging of battery cells through electrolyte decomposition. KULR Technology presents a carbon fiber based thermal management solution that can heat and cool battery packs and prevent thermal runaway propagation.

3:30 Refreshment Break in the Exhibit Hall with Last Chance for Poster Viewing

Engineering Safety for Diverse Applications

4:10 An Update on the DOE OE Energy Storage Systems Safety Roadmap – Supporting a Goal of Fostering Confidence in the Safety and Reliability of ESS

Summer_FerreiraSummer Ferreira, Ph.D., Principal Member, Technical Staff, Sandia National Laboratories

This presentation provides information on the Roadmap recently revised by the Working Group on Energy Storage Systems safety. This roadmap provides direction and strategy on efforts including research and development priorities, safety codes and standards development and revision, and collaboration activities for system stakeholders.


4:40 A Comprehensive Study on the Safety of Aged Li-Ion Cells and Modules

Judith_JeevarajanJudith Jeevarajan, Ph.D., Research Director, Electrochemical Safety, Underwriters Laboratories, Inc.

The stationary energy storage industry has initiated the installation of Li-ion batteries that had been used in automotive applications. This is a second life for the ‘once-used’ Li-ion batteries. However, there is insufficient data on this type of second use of aged Li-ion batteries, especially with respect to the safety. Underwriters Laboratories in collaboration with Texas A&M University has carried out studies to cycle cells and modules under different voltage ranges as well as under the hybrid electric vehicle profile at different temperatures. The fresh and cycled cells and modules were subjected to off-nominal tests such as overcharge and external shorts to understand the characteristics of the aging process and how it might affect safety. Destructive analysis was carried out on fresh and cycled cells to understand component level changes that occur during the aging process. The results of the test program will be presented in this talk.

5:10 Close of Day


5:30-8:30 Dinner Workshop*

W4: How to Qualify Your Battery Suppliers to Prevent Failures and Thermal Events

Instructor: Vidyu Challa, Ph.D., Technical Director, DfR Solutions


*Separate registration required.


Friday, November 3

8:00 am Battery Breakfast Breakout Discussion Groups

Grab coffee and breakfast and join a discussion group. These are moderated discussions with brainstorming and interactive problem solving, allowing conference participants from diverse backgrounds to exchange ideas and experiences and develop future collaborations around a focused topic.

Designing Safety with Battery Management Systems

9:00 Chairperson’s Remarks

Ahmad Pesaran, Ph.D., Chief Energy Storage Engineer, National Renewable Energy Laboratory

9:05 Thermal Design & Simulation of a Natural Convection Cooled 12V Li-Ion Battery

Kem_ObasihKem M. Obasih, Ph.D., Technical Leader, Thermal, Advanced Power Solutions, Johnson Controls - Power Solutions

The design of a 12V Li-ion battery must ensure adequate thermal management for safe operations. Heat generation rates of the cell jellyrolls during all modes of operation are required for use in battery thermal simulations. Performance of thermal and flow simulation of the battery during normal and abuse operations are essential to ensure the battery meets safe temperature and pressure operation specifications.

9:35 Vehicle Electrification: A123 Systems’ R&D Approach for Low- and High-Voltage Material Development

Maha Hammoud, Ph.D., R&D Manager, Materials Engineering, A123 Systems, LLC

A123’s advanced chemistry and system design has driven our low-voltage lithium-ion battery to industry leadership for both 12V (Starter Battery) and 48V (Auxiliary Battery) applications. The advanced chemistry contains A123’s patented Ultraphosphate™ (LFP) cathode powder, for which a fundamental approach to design the material at the crystal structure has yielded superior performance over our competitors. A123 is implementing the same fundamental material development approach for high-voltage applications. This approach is yielding high-energy density cells utilizing nickel-rich NCM cathodes and high-capacity anode materials that are thermally more stable under abuse conditions. This presentation topic is therefore focused on the high-power material development that has resulted in LiSBs with cold crank capabilities that surpass lead-acid batteries and high-energy advancements at the material and cell level to achieve energy densities approaching 300 Wh/kg and 600 Wh/L for EV applications while maintaining the needed safety performance.

10:05 Safecore Technologies: A New Revolution for Lithium-Ion Battery Safety

Jiang_FanJiang Fan, Ph.D., President, American Lithium Energy Corporation

With recent recalls of consumer products and safety incidents in flights, Li-ion batteries have become an urgent public safety issue. Up to this point, good safety solutions often adversely affect battery performance. For instance, some fire-retardant electrolytes can protect the battery from the fire in the internal short, but it also kills the battery cell life. In this talk, a new battery cell safe design concept called SafecoreTM will be presented. The cell with SafecoreTM will have a “circuit breaker” that can protect the cell from thermal runaway when the battery cell is overcharged or internally shorted due to BMS failure, manufacturing defect, or outside impact. The circuit breaker is a safe layer inside the cell, which will be activated by the heat, voltage, and current to break the electrodes so as to interrupt the overcharge current or internal short current. The properly engineered safe layer will not interfere with any electrochemical reaction and hence have no effect on normal cell performance like cycle life.

10:35 Coffee Break

Mitigating the Risk of Thermal Runaway

11:00 Battery Design Impacts on Thermal Runaway Severity under Worst-Case Test Conditions

Thomas_BarreraThomas P. Barrera, Ph.D., President, LIB-X Consulting

Lessons learned from industry battery thermal runaway incidents indicate that worst-case testing in a relevant configuration and environment is necessary to properly determine safety risk. Worst-case testing includes detailed consideration to the battery electrical, mechanical, and thermal design interfaces employed in the intended application. Safety test results from a heritage NASA non-rechargeable lithium battery indicate that battery design, test protocols, and environments have a significant impact on thermal runaway severity.

11:30 Merits of the Cell Bottom Vent Feature in 18650 Cells for Preventing Side Wall Rupture

Eric_DarcyEric C. Darcy, Ph.D., Battery Technical Discipline Lead, Power Systems Branch, NASA Johnson Space Center

Using an NREL-/NASA-patented on-demand internal short circuit device imbedded in a series of 18650 cell designs with and without bottom vents and with and without thicker can walls, our thermal runaway tests indicate that both features reduce a cell’s propensity to side wall rupture. The results of thermal runaway calorimeter and very high-speed X-ray videography give us unique insight as to why and which feature is more effective.

12:00 pm Session Break

12:15 Luncheon Presentation (Sponsorship Opportunity Available) or Enjoy Lunch on Your Own

12:45 Session Break

Mitigating the Risk of Thermal Runaway (cont.)

1:30 Chairperson’s Remarks

Kevin Fok, Senior Project Manager, LG Chem Power, Inc.

1:35 Thermal Runaway of Lithium Batteries Analyzed by Accelerating Rate Calorimetry and Thermography

Carlos Ziebert, Ph.D., Senior Scientist, Head of the KIT Battery Calorimeter Center, IAM-AWP, Karlsruhe Institute of Technology

Extensive market penetration of electric vehicles and stationary storage systems requires use of safe lithium-ion batteries. Thermal runaway of Li-ion cells in a larger battery pack, especially, is the worst case which must be avoided. To get detailed insight into the exothermic reactions triggering thermal runaway, results from accelerating rate calorimetry, thermography and pressure measurements will be presented.

2:05 Quantification of Thermal Hazards Associated with Lithium-Ion Batteries

Stanislav_StoliarovStanislav I. Stoliarov, Ph.D., Associate Professor, Fire Protection Engineering, University of Maryland

The key aspect defining safety of lithium-ion batteries is the amount of thermal energy that they release upon failure. In the current study, a new experimental technique, Copper Slug Battery Calorimetry, was developed to simultaneously quantify the energy released inside an LIB cell (resulting in increasing cell temperature) and outside the cell (associated with flaming combustion of ejected battery materials). A relationship between these parameters and cascading failure of battery packs was analyzed.

2:35 Mythbusting Battery Fire Investigation

Joseph_NowikowskiJoseph (Joe) Nowikowski, MSEE, PE, CFEI, Electrical Division Manager, Western Region, Rimkus Consulting Group, Inc.

Lithium batteries have been involved in fires, often being immediately assumed as the cause. However, many people do not understand the rigors of proving fire causation and identifying those ultimately responsible for its costs. This presentation focuses on the comprehensive analysis that makes up the investigative end of battery failures and fires.


3:05 PANEL DISCUSSION: First Responders

Much of this meeting has centered on testing and transportation of batteries prior to installation. However, attention must be focused on what protective systems may be needed to both prevent and safely mitigate a fire. Hear from this panel of experts as they share the prevention and response tactics that reduce risk to occupants, first responders, and structures.

Moderator:

Kevin_FokKevin Fok, Senior Project Manager, LG Chem Power, Inc.


Panelists:

Paul Rogers, Fire Department NYC

Matthew_PaissMatthew Paiss, Fire Captain, San Jose Fire Department


Nick_WarnerNicholas Warner, Senior Test Engineer, Energy Advisory Laboratory Services, DNV GL


Brian_OConnorBrian O’Connor, Fire Protection Engineer, National Fire Protection Association





4:05 Conference Wrap-Up

Mary Ann Brown, Executive Director, Conferences, Cambridge EnerTech

Kevin Fok, Senior Project Manager, LG Chem Power, Inc.

4:15 Close of Battery Safety Conference


Speaker Proposals