Adding Intelligent Battery Management to Lead-Acid Energy Storage Systems

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  Energy Storage RTE Tutorial Course 3/3: Total Battery System RTE – Ranking and Comparison of Different Battery Chemistries

  RTE impacts of HVAC/Ventilation and Inverters will be described. Batteries generate heat, and this must be dissipated by system cooling and/or taken out of the system. Heat generated can be calculated by looking at IR heating and that generated (net) by exothermic reactions. Examples will include LFP, Li-NMC, Lead Acid and Nickel batteries, both when they are fresh, as well as at their end of useful life. The overall ancillary equipment energy usage will be listed for these systems, and a % RTE loss will be calculated for both nominal rate and high rate applications. Commentary will be provided for other systems. RTE will be summarized and ranked for most energy storage battery chemistries including ZA, NaS, LiS, Saltwater, Liquid Metal, Zinc Bromine and Fuel Cells.

  This webinar will focus on the following key topics:

  • RTE impacts of Inverters and HVAC
  • RTE impacts for ancillary equipment for different systems
  • RTE numbers for most battery systems being considered for energy storage

  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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  Beyond Electrochemical Analysis – 2D to 4D Correlation of Microstructure and Chemistry in Li-ion Batteries

  Single imaging instruments as well as correlative microscopy workflows have demonstrated some unique abilities to support LIB research beyond electrochemical analysis methods. Light microscopy delivers insights about ablation effects & phase orientations in the active material, while scanning electron microscopy (SEM) reveals information about aging effects, nanometer cracks & the composition of the active material. Combining SEM with in-situ Raman spectroscopy extends the traditional SEM capabilities to organic and inorganic material identification. X-ray microscopy, furthermore, delivers 3D non-destructive imaging of full battery packs and localized high-resolution information, thus allowing the identification of regions of interest within the battery material volume. This presentation will demonstrate the application of these techniques to Li-ion battery research, including examples on anode, cathode, binder, and separator materials.

  This webinar will focus on the following key topics:

  • Introduction to available microscopic investigation techniques
  for Li-ion battery research:
  – Light Microscopy
  – Scanning Electron Microscopy
  – X-ray Microscopy
  – Raman Spectroscopy
  • Review of recent battery imaging studies in published literature
  • Case studies on using correlative microscopy to characterize battery performance & failure mechanisms

  Presenter
  Stefanie Freitag – Market Segment Manager at Carl Zeiss

  Stefanie is Market Segment Manager in Materials Research at Carl Zeiss Microscopy in Munich. She holds a Diploma in Engineering Physics, gained first work experiences in a nuclear fusion reactor with a pioneering concept in Greifswald, then worked 3 years in the solar industry in Ulm & Hsinchu, Taiwan. In her current position she analyzes and defines new microscopic solutions for specific materials segments including light microscopy, electron microscopy, x-ray microscopy and chemical methods like Raman spectroscopy.

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  Electrochemical Impedance Spectroscopy and Its Application to Battery Analysis

  Electrochemical Impedance Spectroscopy (EIS) is a well-established experimental technique that has applications in coatings, corrosion, sensors, electrochemical double layer capacitors, batteries among others. The power of EIS partly comes from its ability to access a very wide range of frequencies (typically from MHz to μHz). For batteries, parameters such as the internal resistance, electrode surface capacitance and leakage are accessible at different frequencies across the spectrum. This allows EIS to gather all the relevant information with a single measurement. In this webinar, we will briefly introduce EIS and cover its application to batteries. We will talk about how to analyze typical data and how to gather the relevant information. We will further talk about available instrumentation and their limitations.

  This webinar will focus on the following key topics:

  • What is impedance spectroscopy?
  • What can impedance spectroscopy do for Battery analysis?
  • How can capacitance, internal resistance and leakage be determined using EIS?
  • What are the instrumental requirements and limits?

  Presenter

  Chris Beasley – Gamry Instruments

  Chris Beasley received a BS in Chemistry from Kutztown University in 2000 and got a PhD in electrochemistry from University of North Carolina at Chapel Hill in 2010. His doctoral dissertation was on using redox-active nanoparticles as supercapacitors. Chris joined Gamry Instruments in 2010.

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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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