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Home > Press > MIT & Johnson Controls join Battery Safety and Lithium Battery Power conferences to present on computational modeling for li-ion crash safety and battery management for safety, performance & reliability.

Abstract:
Leading experts from around the world will convene in Las Vegas on December 4-7, 2012 for the 8th International Lithium Battery Power & 3rd International Battery Safety 2012 conferences. With over 45 presentations over 4 days these meetings will showcase the very latest scientific developments from around the world. MIT & Johnson controls are the latest organizations to join the extensive list of presenters for this key industry event. The presentation abstracts from these two organizations are featured below.

MIT & Johnson Controls join Battery Safety and Lithium Battery Power conferences to present on computational modeling for li-ion crash safety and battery management for safety, performance & reliability.

Boston, MA | Posted on November 11th, 2012

Characterizing Crash Safety of Cylindrical and Pouch Li-ion Batteries using Computational Modeling
Tomasz Wierzbicki, PhD, Department of Mechanical Engineering, Massachusetts Institute of Technology
Mechanical integrity of Lithium-ion batteries is one of the most important issues on safety of electric cars, but the least studied topic. As these batteries are not limited to stationary applications anymore, and are being used in vehicle battery packs, this aspect of their safety is more urgent to be characterized and quantified. The automotive industry has realized that no battery pack could be rigid enough to ensure zero deformation to battery pack in severe enough crash conditions. In this research, two common form factors of cylindrical and pouch batteries are characterized for several scenarios of deformation applied to these cells. A comprehensive testing program was used to characterize the material properties of the cells under combined tension and predominantly compression and shear loading. Then, computational models of the cells were developed. The models successfully predict load-deformation trajectory and kinematics of the cell under various types of tests. Additionally, the models are capable of predicting failure in the jelly-roll of the cell, indicating an internal short-circuit under mechanical deformation. To compare the pouch and cylindrical cells tested in this research, the cylindrical cell tolerated a load of 5,500N and a deformation of about 7 mm before reaching short circuit, while the pouch cell tolerated a load of 7,500N and a deformation of 3 mm before failure. Predicting onset of electric short circuit is a necessary condition for possible thermal runaway.

Battery Management at the System Level: Safety, Performance and Reliability
Larry J. Yount, LaunchPoint Energy and Power - LEAP LLC &
Mark Gunderson, Johnson Controls, Inc
• The advent of electronic controls in the vehicle has brought on an increasing need or relevance to safety
• Drive by wire, break by wire, cruise controls have been leading functions for safety in the vehicle
• Electric propulsion has exposed the automotive industry to new areas of safety hazard - new large energy source, high voltage
• More rigorous regulations and standards are being brought to bear into the automotive space due to the advance battery electric propulsion - i.e. ISO26262
• Historically, critically safety systems have implied rigorous design methods and redundant systems driving significant cost.
• Automotive has be a high volume cost conscious industry
• JCI is making a strong effort to provide state-of-the-art safety systems at the battery system level
• JCI has addressed battery system safety through our material, cell, electronic controls, and system level components.
• With varying conditions and failure modes within an electric propulsion system, there are always some hazards that can only be sufficiently mitigated through BMS intervention
• JCI has developed a battery that optimizes system safety taking maximum advantage of capabilities provided through BMS electronics and software control.
• Key Messages:
- Developed fully ISO26262 ASIL D capable fail-safe controls system without significant electronic redundancy
- System level top-down safety concept development approach optimizes battery system cost while meeting safety regulations
- Adopted best in class safety analysis approaches in safety development
- JCI has focused to develop system safety with cell safety as an integral element of the total solution

Distinguished Faculty:
-Brian Barnett, PhD, TIAX LLC
-Andrew F. Burke, PhD, Institute of Transportation Studies, University of California-Davis
-Steve Carkner, Panacis, Inc
-Zonghai Chen, PhD, Argonne National Laboratory
-Hua Cheng, PhD, Newcastle University, United Kingdom
-Michael D. Eskra, Eskra Technical Products, Inc.
-Alejandro A. Franco, Prof Dr, Atomic and Alternative Energy Commission of France
-Mark Gunderson, Johnson Controls, Inc.
-Wei He, University of Maryland
-Judith Jeevarajan, PhD, NASA Johnson Space Center
-Steven Kaye, PhD, Wildcat Discovery Technology
-Brian J. Landi, PhD, Rochester Institute of Technology
-David S. Lashmore, PhD, Nanocomp Technologies Inc.
-Andrew J. Manning, Lithium Battery Engineering, LLC
-Shreefal Mehta, PhD, Paper Battery Company
-Kai-Christian Mφller, PhD, Fraunhofer Institute for Chemical Technology, Germany
-Ahmad Pesaran, National Renewable Energy Laboratory
-James E. Powell, Transportation Development Group
-Ajay Prasad, PhD, University of Delaware
-Frank Puglia, Yardney Technical Products
-Vishal Sapru, Frost & Sullivan
-Hans J. Seifert, PhD, Karlsruhe Institute of Technology, Germany
-Christian E. Shaffer, PhD, EC Power LLC
-Erik J. Spek, PEng, TάV SάD Canada
-Saburo Tanaka, PhD, Toyohashi University of Technology, National University Corporation
-Larry Thomas, Primet Precision Materials, Inc.
-Swati Umbrajkar, PhD, Chilworth Technology, a DEKRA Company
-Karl Vestin, Lithium Balance A/S, Danmark
-Tomasz Wierbicki, PhD, Massachusetts Institute of Technology
-Nicholas Williard, CALCE - University of Maryland
-Alvin Wu, Underwriters Laboratories Taiwan Co., Ltd., Underwriters Laboratories
-Qingliu Wu, PhD, Argonne National Laboratory
-Rachid Yazami, PhD, Nanyang Technological University, Singapore
-Larry J. Yount, LaunchPoint Energy and Power - LEAP LLC
-Yunhua Yu, PhD, Beijing University of Chemical Technology, China
-Ji-Guang (Jason) Zhang, PhD, Pacific Northwest National Laboratory
-Sheng S. Zhang, PhD, U.S. Army Research Laboratory


Participating Organizations to date:
3M Company
Advance Battery Technology
AIST
Alion Science & Technology
Altenergymag
Apple
Argentine Wind Energy Association
Argonne National Laboratory
Atomic and Alternative Energy Commission of France
BASF
Battery Power
Beijing University of Chemical Technology
Best Magazine
BioLogic USA
Buhler, Inc.
Charged Magazine
Chilworth Technology
Dow Kokam
Eaglepicher Medical Power LLC
EC Power LLC
Electrochem Solutions, Inc.
Element Materials Technology
Esacpsa
ETP, Inc.
ETRI
EV Hub
FCBAT
Fraubhofer Institute for Chemical Technology
Frost & Sullivan
GFS Chemicals, Inc
Global Automotive
GN Resound A/S
Harris Corporation
HEL Ltd
Heritage International
Honda R&D Americas
Inovus, Inc
INERIS
INTI
Johnson Controls, Inc.
Karlsruhe Institute of Technology
Kobelco Research Inst., Inc.
KRI Inc.
LaunchPoint Energy and Power
Lithium Battery Engineering, LLC
Maccor, Inc
Massachusetts Institute of Technology
MTI Corporation
Nanocomp Technologies, LLC
Nanyang Technological University
NASA Johnson Space Center
National Renewable Energy Laboratory
Naval Surface Warfare Center
Netzsch Instruments North America, LLC
Newcastle University
nGimat, LLC
Pacific Northwest National Laboratory
Panacis, Inc.
Paper Battery Company
PCTEST
Pike Research
PMB Defense
Renault-Nissan
Rochester Institute of Technology
Shmuel De-Leon Energy, Ltd
Sony Corporation
SouthWest Electronic Electronic
Southwest Research Institute
Thermal Hazard Technology
TIAX LLC
Tohoku University
Tosoh USA
Toyo Systems
Toyohashi University of Technology
Transportation Development Group
U.S. Army Research Laboratory
UNC - Chapel Hill
Univeristy of the Basque Country
University of California - Davis
University of Delaware
University of Maryland
wildcat Discovery Tech
Yardney Technical Products
ZPower LLC


Lithium Battery Power 2012:
Recent significant innovations within lithium-ion batteries have propelled the technology into a position in the marketplace far exceeding recent market survey results. Breakthroughs in new battery chemistries, novel electrode and electrolyte materials, system integration for a vast array of mobile and portable applications, from micro medical devices to high-energy/high-power automotive, have paved the roadmap for an emerging market with unlimited potential.

New chemistries & materials to increase energy & decrease cost
Meeting the EV challenge: cycle life, power & energy, cost and safety
Advanced materials for improved electrode & electrolyte performance
Application driven lithium ion battery development
Advanced technology for greater safety, reliability and performance
From novel materials and components to systems design and integration
Role of nanotechnology in improving power and energy density

Battery Safety 2012:
Widely publicized safety incidents and recalls of lithium-ion batteries have raised legitimate concerns regarding lithium-ion battery safety. Battery Safety 2012 is conveniently timed with Lithium Battery Power 2012, and will address these concerns by exploring the following topics:

Application specific battery safety issues affecting battery performance
Major battery degradation and reliability factors
Battery management systems
Commercial cells evaluation and failure analysis
Advances in testing techniques and protocols
High throughput testing, automation and modeling for better safety
Standardization and regulatory issues


Hotel Discount Deadline is November 23, 2012 - $85 per Night

*Save $75 with Advanced Registration - Expires November 9, 2012

####

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