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Energy Storage RTE Tutorial Course 2/3: Ampere-Hour (Ah) RTE and Voltage Polarization Energy Losses
Many aqueous systems have water electrolysis to contend with, and above 70-80% SOC, RTE losses from this competing reaction can be significant. Management of these losses has been evolving for decades, and there are now tried and tested methods mostly related to charging algorithms & partial state of charge (pSOC) cycling. These methods will be reviewed. Relevant for every battery chemistry, Cell Voltage factors, will be separated into eight different components, four each, for the cathode and anode. These will be presented & described. The variables that affect them will be reviewed, including the effects of age & cycling and methods for their ongoing measurement. Techniques to reduce and mitigate polarization will be detailed & possible benefits will be quantified in terms of RTE & cost for different scenarios.
This webinar will focus on the following key topics:
• Ah Efficiency losses in aqueous systems
• Types of Voltage Polarization losses for all systems
• Strategies and plans for reducing & mitigating efficiency losses
• Improvement potential for different systems
Presenter
Dr. Halle Cheeseman – Founder/President at Energy Blues LLC
Dr. Halle Cheeseman earned a PhD in Electrochemistry & Corrosion from the University of Nottingham in UK, graduating in 1985. She has held several executive positions in the battery industry over the past 32 years, including Sr. VP of R&D at Spectrum Brands and VP of R&D at Exide Technologies. Her specific battery experience includes Lithium Ion, Zinc Air, Nickel Metal Hydride, Nickel Iron, Alkaline and Lead Acid, focusing on Consumer, Industrial, Automotive & Renewable Energy applications. In July 2017, Dr. Cheeseman founded Energy Blues LLC, an energy storage consulting cooperative comprising 20+ subject matter experts.
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Avoid Battery Explosions and Fires – With Right Data and Better Designs
Modern Li Ion batteries contain hazardous chemicals and heat up during use – this combination always has the potential to cause fires and explosions. This presentation will focus on improving the understanding of how such incidents occur, what can be done to avoid them and how the risk can be minimized during early stage design.
The solution lies in knowledge of the heat generation rate during normal use, and information about safe boundaries such as temperature, discharge rate & overcharge in realistic situations that represent actual conditions of use. Data from commercial batteries of different types, including videos of batteries undergoing thermal runaway, 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 and explosions occur
• How to design safer batteries through 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 generation
Presenter
Dr. Jasbir Singh – Managing Director at Hazard Evaluation Laboratory
Jasbir 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.
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Certification Challenges for Secondary Use EV Batteries
As the 1st generation of Lithium-ion based hybrid and battery electric vehicles are reaching end-of life, or original traction batteries are being replaced with new batteries, the interest in secondary life or repurposing of these batteries continues to grow. Lithium-ion batteries present several challenges to Auto OEM’s, Recyclers and waste operators. Repurposing of EV batteries for non-automotive applications also creates new challenges for certification and acceptance by AHJ’s (Authorities Having Jurisdiction). This webinar discusses the current market challenges and concerns, while providing a roadmap of the current options for various usage cases of reused or repurposed EV batteries.
This webinar will focus on the following key topics:
• Understand the usage cases for secondary life batteries
• Review market drivers for secondary use batteries
• Review the concerns of battery and cell manufacturers with re-use of lithium-ion batteries
• Discuss the unique challenges to certifying used batteries for new applications
• Discuss current options for certification in the US market
Presenter
Rich Byczek – Global Technical Director for Transportation Technologies at Intertek
Rich has over 20 years of experience in product development and validation testing, 14 of which have been spent at Intertek. Mr. Byczek is also an expert in the areas of energy storage, audio equipment and EMC testing. He sits on several SAE, IEC, UL and ANSI standards panels, focusing on Energy Storage and Electric Vehicle Technologies. He holds a Bachelor of Science in Electrical Engineering from Lawrence Technological University in Southfield, Michigan, and is based at the Intertek facility located in Plymouth, Michigan.
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Battery Analytics Tutorial Course 2/3: Data Capture and Trend Reporting
This one-hour webinar is Part 2 of a 3-part series. Battery management systems take large amounts of sensor data readings on a continual basis as part of their functionality. Battery analytics involves leveraging battery performance data for tasks such as identifying issues that can reduce battery life, flagging behavior that can negatively impact energy storage system performance, and predicting remaining cell and pack life.
This webinar will focus on the following key topics:
• Sensor data capture, aggregation and manipulation into performance reports
• Real-life examples will be shared, where aggregated historical data was analyzed and anomalous behaviors were identified
• Also shared will be the inspections and testing of the pack to identify the cause of the anomalous behavior, and the discovery and resolution of the problems that caused the anomalies
Presenter
Michael Worry – CEO at Nuvation Energy
Michael Worry founded Nuvation in 1997 and has grown the company over 21 years into a thriving electronic products and engineering services firm with offices in Sunnyvale, California and Waterloo, Ontario Canada. He is the CEO of Nuvation Energy, a provider of battery management systems and engineering services for large-scale energy storage systems.
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