$0.00
Part 1 focuses on the safety tests with large lithium-ion cells. We explain our test method and equipment to trigger and characterize a thermal runaway (TR). Then we present a case study with a large pouch cell which is brought into TR by over-temperature. We discuss the temperature curves, the voltage/resistance curves, gas releases and gas compositions.
Part 2 covers composition analysis of large lithium-ion cells to interpret what happened during high temperature test. We also conduct thermal stability analysis of charged electrode to know the temperature when exothermic decomposition and oxygen release from cathode start. From that information, we can obtain key parameters to control thermal runaway from material design point of view.
This webinar will focus on the following key topics:
• Methods for safety tests of large lithium-ion cells
• Thermal runaway of a large pouch cell caused by over-temperature
• Detailed analysis of the gas, which is released during thermal runaway
• Composition analysis of large scale lithium-ion cells
• Thermal stability of charged electrode
Presenters
Yasuhito Aoki – Researcher at Toray Research Center
Christiane Essl – Researcher at Virtual Vehicle Research GmbH
Andrey Golubkov – Researcher at Virtual Vehicle Research GmbH
Yasuhito Aoki is a researcher at Toray Research Center. He has been working on material analysis of Lithium ion battery using various instrumental analysis (mainly, Raman, FT-IR spectroscopy).
Christiane Essl is a researcher at the Virtual Vehicle Research GmbH and an external PhD student at AUDI AG. She works on Battery Safety with the focus on vent gas analysis and early battery failure detection.
Andrey Golubkov is a researcher at Virtual Vehicle Research GmbH. He has been working on thermal runaway testing of automotive Li-ion cells for 10 years.
Toray Research Center and Virtual Vehicle Research GmbH are proud sponsors of this event.
Related products
-
Understand and Prevent Battery Fires and Explosions – and Avoid Costly Failures Like the Samsung Note 7
Modern batteries (eg Li-Ion) contain hazardous chemicals & they heat up during use: this combination always has the potential to cause fires & explosions. This presentation will focus on improving the understanding of how these incidents occur, what can be done to avoid them & how the risk can be minimized during early stage design.
The Samsung Note 7 phone & Boeing Dreamliner airplane fires are very costly examples of how even large corporations fail to understand the potential fire risk of batteries.
The solution lies in knowledge of heat generation rate during normal use & information about safe boundaries such as temperature, discharge rate & overcharge, in realistic situations that represent actual use conditions. Data from commercial batteries of different types will be used to illustrate these points.
A relatively new technique will also be discussed with data, which allows total heat output during discharge to be measured on-line and this can be used both for design and battery modelling. Examples of the data will be provided.
This webinar will focus on the following key topics:
• Why battery fires & explosions occur
• How to design safer batteries though understanding of heat generation
• Video evidence of batteries under explosive conditions
• How better thermal management systems can be designed – based on heat measurement from isothermal calorimetry
• Laboratory instruments suitable for testing and data generationPresenter
Dr. Jasbir Singh – Managing Director at Hazard Evaluation LaboratoryJasbir is a chemical engineer specializing in thermal hazards and calorimetry, traditionally for the chemical industry but now increasingly involved in battery safety, especially Li-ion EV and related types.
A graduate of Imperial College (London), where he undertook PhD into combustion and explosions, his experience includes many years in process design for the chemical and petrochemical industries. He is currently developing test methods and instruments for use in design of battery thermal management systems.
Buy Now -
Battery Selection Tutorial Course 3/3: Integrating Your Battery Into Your Product – Designing for Worst-Case Scenarios
The last part in Exponent’s three-part series, this webinar will focus on the finished product from the viewpoint of the battery. How can you best protect your battery within your device? Is your battery going to be user-replaceable? If you’re creating multi-cell packs, how should they be separated from (yet still connected to) each other? Should a thermal event occur, how can you prevent that from cascading through the whole pack? This webinar will help to answer many of those questions, and discuss design questions to help safeguard your battery pack throughout its entire lifecycle.
This webinar will focus on the following key topics:
• Creating multi-cell packs
• Containing thermal runaway eventsPresenter
Buy Now
Exponent – a multidisciplinary engineering and scientific consulting firm with significant experience in various aspects of battery design, safety testing and failure analysis. -
Determination of Battery Safety and Performance Parameters Using Adiabatic and Isothermal Calorimetry
FREE Webinar – Thermal Hazard Technology is a proud sponsor of this event.
This presentation describes two main types of calorimetry which can be used to carry out safety and performance testing on batteries. Isothermal calorimeters allow for direct heat measurement on cells during use, while adiabatic calorimeters can measure heat released from batteries during thermal runaway.
Calorimetry can serve as a quantitative scientific method for evaluation of battery safety but it requires appropriate instrumentation. The principles of operation of both types of calorimeters are described along with specific applications within the field of battery testing.
A combination of both technics allows for detailed thermal characterization of lithium-ion and other rechargeable cells, and differences due to chemistry, cell design, cell age, state of charge and cell size can be evaluated.
This webinar will focus on the following key topics:
• The principles of adiabatic and isothermal calorimetry
• How calorimetry can be used in battery testing
• Parameters established by adiabatic safety testing
• Parameters established by isothermal performance testing
• Pressure measurement and gas collectionPresenter
Danny Montgomery – Technical Performance Manager at Thermal Hazard TechnologyDanny Montgomery has worked at Thermal Hazard Technology for 9 years. His current role is Technical Performance Manager; overseeing the lab and technical aspects of instrumentation manufactured by THT. He joined the company in 2009 after graduating from Southampton University with a master’s degree in physics.
Danny’s focus is primarily on lithium battery calorimetry; both adiabatic and isothermal. He oversees the use of calorimeters for customer sample testing as well as installing calorimeter systems and provided training for battery and automotive companies worldwide, such as Panasonic, BMW and Samsung. Danny works in Thermal Hazard Technology’s UK office in Milton Keynes.
Buy Now -
Stability of Li7La3Zr2O12 Garnet Solid-State Electrolyte Against Metallic Lithium
Energy storage demands will require safer, cheaper and higher performance electrochemical energy storage. While the primary strategy for improving performance has focused on state-of-the-art Li-ion batteries, this work seeks to develop solid-state batteries employing metallic Li anode. Recently, the ceramic electrolyte, Li7La3Zr2O12 (LLZO) cubic garnet, has shown promise owing to its unique combination of properties such as high Li-ion conductivity and electrochemical stability. Generally, LLZO is synthesized through powder processing and sintering at high temperature to produce dense membrane. Processing of the ceramic materials produces internal and surface flaws which will inhibit lithium transport creating localized current density and control the stability against Li dendrite propagation. This presentation will discuss new improvement in methodology to evaluate the integrity of LLZO membrane.
This webinar will focus on the following key topics:
• Methodology to evaluate the integrity of LLZO by identifying the microstructural flaws and their impact on mechanical properties
• DC cycling, EIS, XPS will be shown to determine the reactions that govern the maximum current density
• Correlate the electrochemical stability and critical current density with defects in polycrystalline solid state LLZO electrolytePresenter
Asma Sharafi – PhD Student with Jeff Sakamoto at University of MichiganAsma received her MS in Chemistry (material science) in 2013 at University of Georgia. Currently, she is a PhD student in Mechanical Engineering at University of Michigan under Jeff Sakamoto’s supervision. The primary focus of her research is on the development of new solid state electrolyte (SSE) with the garnet structure (Li7La3Zr2O12) that offer unprecedented safety and durability.
Buy Now