Battery Engineering Symposium
Building Better Batteries
28-29 January 2019 (Room: Madrid)
With new improvements in battery chemistries, battery engineers are working to create high-energy, cost-effective, and reliable batteries that fully utilize the battery’s chemistry. To achieve this goal, engineers must consider materials and cell
engineering, mechanical, electrical, and thermal design and integration of packs, as well as output, safety, and durability of the key designs. Battery Engineering will bring together engineering representatives from top OEM companies, the battery
supply chain, and top academic institutions to discuss the recent advancements in battery technology. This symposium will encompass both cell and pack engineering and how advancements in these areas are not only building better, but safer and more
robust batteries.
Final Agenda
Monday, 28 January
8:00 Symposium Registration and Morning Coffee
9:30 Chairperson’s Opening Remarks
Yatish Patel, PhD, Faculty of Engineering, Department of Mechanical Engineering, Imperial College London
9:35 Thermal Runaway Propagation in Li-Ion Batteries
Andreas Pfrang, PhD, Scientific Officer, Joint Research Centre, Directorate for Energy, Transport and Climate, European Commission
If thermal runaway occurs in a single cell inside battery assemblies, the heat generated typically cannot be easily dissipated and will lead to a temperature increase in adjacent cells. Such thermal runaway can cascade through the whole battery module
or pack leading to significant heat and gas release. In this presentation, a model describing thermal runaway based on thermal data of reactions taking place in cells during thermal runaway is shown and thermal runaway initiation methods are compared.
Finally, an overview of current standards on thermal propagation is given.
9:55 Calorimeters to Advance Thermal Management and Safety of Batteries
Carlos Ziebert, PhD, Head, Battery Safety Center, IAM-AWP, Karlsruhe Institute of Technology (KIT)
This talk will show how the calorimeters allow studying of the thermal runaway propagation to develop and qualify suitable countermeasures, such as heat protection barriers, which is currently becoming a very "hot topic." The acquired data are essential
on all levels of the value chain, from safe design on materials level up to thermal management and adaptation of safety systems, or implementation into modelling and simulation tools.
10:15 Enhancing Cooling System Durability for Battery Packs and Fuel Cells
Michael Harenbrock, Business Development Manager, Mann+Hummel GmbH
Air and Liquid Cooling is required to keep Li Ion Battery Systems at the right temperature range to maintain system performance and to avoid system failure. The presentation will give an overview of the different cooling methods established – open
and closed air cooling systems, direct and indirect cooling systems for battery systems. Failure modes caused by coolant contamination will be explained, and technical solutions for particle filtration, water adsorption and ion exchange will be highlighted.
10:35 Networking Coffee Break with Poster Viewing
11:05 Components to Improve Lithium Battery Safety
Peter Kritzer, PhD, Senior Application Manager, Sales Automotive, Freudenberg Sealing Technologies
The presentation will give an overview of products and approaches to improve battery safety. Beside cell separators, specially developed overpressure valves and heat shields, new concept ideas will be presented, which could improve battery safety
on a higher level. Besides this, we will produce components enabling a reliable function of the batteries under normal operation.
11:25 Preventing Lithium-Ion Battery Failure During High Temperatures by Externally Applied Compression
Yatish Patel, PhD, Faculty of Engineering, Department of Mechanical Engineering, Imperial College LondonYatish Patel, PhD, Faculty of Engineering, Department of Mechanical Engineering, Imperial College London
Lithium-ion cells can unintentionally be exposed to temperatures outside manufacturers' recommended limits without triggering a full thermal runaway event. The question addressed in this paper is: Are these cells still safe to use? In this study,
externally applied compression has been employed to prevent lithium ion battery failure during such events.
11:45 How Silicone Materials are Answering the Performance and Assembly Requirements of EV Battery Packs
Julien Richeton, PhD, Technical Service & Development Scientist, Dow Performance Silicones, Dow Silicones Deutschland GmbH
High-energy density, more compact batteries requires gap fillers with higher thermal conductivity but also higher flow to fill intricate geometry. Thanks to their highly-tunable properties, silicone materials are in a position to offer the right balance
between a long-term performance and a simplified assembly process.
12:05 Q&A
12:30 Networking Lunch
13:55 Chairperson’s Remarks
Wenzel Prochazka, Battery Manager, Battery Benchmarking Program, AVL List GmbH
14:00 Smart Sensing for Future Batteries
Yue Guo, PhD, Project Manager, Deputy Head, Energy Innovation Centre, WMG, The University of Warwick
A more effective battery thermal and structural deformation monitoring system by applying distributed optical fibre sensing techniques has been proposed and demonstrated in this paper, to meet the challenge hindering the mass adoption of lithium-ion
or more advanced chemistries in future battery applications.
14:20 ANSYS Simulation Tools for Battery Development
Rolf Reinelt, PhD, Senior Application Engineer, Application Engineering, ANSYS Germany
ANSYS battery tools range from 3D field simulation (in CFD) to Reduced Order Model (ROM) extraction to system simulation. In particular it is possible to calculate the distribution of ohmic and electrochemistry sources in the battery. This allows
us to accurately predict the temperature distributions in the battery and to assess the performance and durability. In our presentation we will give an overview of the underlying techniques and comprehensive system simulation methods for electric
drivetrain and battery development.
14:40 Optimizing and Qualifying New Electrolyte Designs Faster with Advanced Analytics
Tal Sholklapper, PhD, CEO, Voltaiq
As global automotive OEMs race to electrify their fleets, there's a need for new electrolytes to enable safer, higher energy density batteries. In this presentation we will discuss how companies are putting together the data infrastructure and analytics
environment that enables them to support electrification of the global automotive market.
15:00 Q&A
15:15 Refreshment Break with Poster Viewing
15:50 Chairperson’s Remarks
Wenzel Prochazka, Battery Manager, Battery Benchmarking Program, AVL List GmbH
15:55 Homogeneity of Lithium Analysis in Lithium-Ion Batteries – A Study on Half Cells, Full Cells and Parallel Connected Cells of the Tesla Model S 85
Friedrich Hust, Chief Engineer, Modelling, Analytics and Lifetime Prediction, RWTH-Aachen, Institut für Stromrichtertechnik und Elektrische Antriebe
In this work, the inhomogeneous distribution of lithium on the electrodes of lithium-ion batteries is assessed by analyzing the voltage response in half-cells, full-cells, and parallel connected cells. A set of experiments has been conducted ranging
from differential voltage analysis to voltage relaxation measurements and electrochemical impedance spectroscopy. This submission summarizes the former stated experiments, derives and explains the theory of homogeneity of lithium distribution.
16:15 A Challenge of Reliable Circuit Protection in Automotive Applications
Liwu Wang, PhD, Director, Business Development, Sales & Marketing, AEM Components (USA), Inc.
This presentation highlights some potential safety concerns in circuit protection associated with EV applications. It demonstrates how advanced “Wire-in-Air” fuse technology could yield much more consistent and reliable performance.
The newly developed solid, robust structure of CMF fuses assure the best safe power density in higher power applications.
16:35 Effective Battery Control Instead of Monitoring the Death of the Battery
Hans Harjung, CEO, e-moove GmbH
Monitoring and balancing is state-of-the-art in battery management (BMS) since decades. In fact, this means monitoring the death of the battery. Effective battery control (ebc) is controlling all cells according to their individual state-of-health
(SoH) and aging parameters. This leads to a maximum lifetime and performance of the battery pack combined with highest safety.
16:55 Q&A
17:10 Welcome Reception with Poster Viewing
18:15 Dinner Tutorial Check-In*
20:30 Close of Day
Tuesday, 29 January
7:30 Symposium Registration and Morning Coffee
8:30 Chairperson’s Opening Remarks
Uwe Wiedemann, PhD, Managing Director, Munich Electrification GmbH
8:35 A Glance at Next Generation Battery Management System Requirements: Safety and Security
Uwe Wiedemann, PhD, Managing Director, Munich Electrification GmbH
8:55 Continued Glimpses into xEV Batteries on the Market – AVL Series Battery Benchmarking
Wenzel Prochazka, Manager, Battery Benchmarking Program, AVL List GmbH
he Program provides a database for objective comparison in technical attributes as well as in engineering methodology with market competitors for clear system target definition of high performing, reliable and safe batteries. 270 different
criteria are evaluated through AVL benchmarking metrics displayed in 8 high level attributes. The found integrated system performance values in cell, mechanical and electrical system are pointed out to support current and future development
programs. Example vehicles are the Tesla Model 3, Volkswagen e-Golf and Chevrolet Bolt.
9:15 Initialization of Thermal Runaway in Lithium-Ion Batteries and Measures to Prevent Thermal Propagation
Olaf Böse, PhD, Deputy Head of Department, Battery Test Center, ZSW
9:35 Digitalization as a Game Changer for Battery Cell and Battery Production
Kai Peter Birke, PhD, Electrical Engineering, University of Stuttgart
Paul Schmidhäuser, MSc, Research Associate, Corporate Strategy and Development, Fraunhofer Institute for Manufacturing Engineering and Automation (IPA)
Vladimir Jelschow, MSc, Research Associate, Corporate Strategy and Development, Fraunhofer Institute for Manufacturing Engineering and Automation (IPA)
Many so-called developments in the field of Li-Ion battery cells and batteries still rely purely on trial and error. The reason is that some currently present battery cell production methods are extremely challenging to digitalize. Both new
and modified production methods as well as digitalization can change the game and tremendously improve high volume production. However, digitalization counts on measurable values as well as a constant and optimized production flow. We
will report and highlight examples of improving battery cell production by digitalization as well as sophisticated production flows.
9:55 Q&A
10:10 Grand Opening Coffee Break with Exhibit & Poster Viewing
11:00 Chairperson’s Remarks
Bob Spotnitz, PhD, President, Battery Design LLC
11:05 Roll-To-Roll Pre-Lithiation for Lithium Ion Battery Anodes
Jan Ronsmans, Technology Manager, Emerging Technologies, JSR Micro NV
This presentation will explain a new way for lithiation of lithium ion battery anodes. This method that can result in significant battery performance improvements and its applicability to an industrial mass manufacturing process is already
demonstrated. The roll-to-roll pre-lithiation technique can be applied to a wide variety of anode materials and offers opportunities to reduce lithium ion battery manufacturing cost, such as excess loading of cathode due to low first-cycle
efficiency of anode.
11:25 Next Generation of Primed Al/Cu Foils to Support the Battery Market Evolution
Thierry Dagron, Business Development Director, ARMOR Films for Batteries, ARMOR
In order to increase the energy density and cope with supply chain and safety regulations, most of the battery manufacturers look to develop nickel-rich cathodes, silicone-based anodes, higher voltages, water-based processes, etc. With such
changes, new technical issues may occur at the interface between the electrode and the current collector. We demonstrate how primed current collectors (Al/Cu foils with a protective and conductive coating) solve these problems. ARMOR has
developed specific primed Al/Cu foils for these new electro-chemistries. Benefits are longer cycle life, increased safety, fast charging, high power and energy density.
11:45 Continuous Mixing Process for LIB Electrode Slurries Contributes to Cost-Effective Cell Manufacturing
Philipp Stössel, PhD, Technologist Battery Solutions, Grinding & Dispersing, Bühler AG
The present production methods for lithium-ion battery (LIB) electrode slurries are largely based on batch processes. However, for the expected LIB market growth, especially in the automotive industry, these methods will no longer fulfill
the requirements of the industry. Therefore, Bühler has developed a novel process based on a twin-screw mixer for fully continuous electrode slurry production. This process increases productivity per mixing line and eliminates batch-to-batch
variations.
12:05 New Approaches in Battery Cell Production - From Standardization to Flexible and Agile Production Systems
Jürgen Fleischer, PhD, Manager, Machines, Equipment and Process Automation, Karlsruhe Institute of Technology
12:25 Q&A
12:40 Networking Lunch
13:55 Dessert Break with Exhibit & Poster Viewing
14:40 Chairperson’s Remarks
Kevin Konecky, Battery Systems Consultant, Total Battery Consulting, Inc.
14:45 xEV Industry Trends of Charging & Battery Systems
Kevin Konecky, Battery Systems Consultant, Total Battery Consulting, Inc.
Lithium-ion battery systems are an enabling technology in the propagation of xEVs with longer range and higher-energy-density batteries. Further enabling public acceptance are convenient and time-effective charging options. This presentation
will review many xEVs currently in production and discuss trends and diversity in the subsystem design choices that were implemented in each production system including charge capabilities. Different charging protocols and standards across
the globe will be discussed with trends analyzed, as well as improvements to user convenience including faster DC-charging and wireless charging.
15:05 Charge Fast but Don’t Plate – How Validated Battery Models Can Solve the Dilemma
Michael Schoenleber, PhD, Co-Founder & CEO, Research & Development, Batemo GmbH
We will show that development time and effort can be drastically decreased by instead physically modelling a Lithium-Ion cell, proving the validity of the model in the whole operational range and subsequently using the model-predicted anode
potential to investigate under which conditions Lithium-plating will start to occur. We will further show from that how charging strategies can be derived, that charge the battery truly as fast as possible while still avoiding Lithium-plating.
15:25 Presentation to be Announced
Peter Pichler, PhD, Manager, Samsung SDI Battery Systems
15:45 Electrical Parameters and Kinetics of Constrained Li-Ion Pouch Cells
Jan Singer, Electrical Energy Storage Systems, Institute for Photovoltaics, University of Stuttgart
Constraining Li-Ion pouch cells extends their cycling lifetime. The literature reports mechanical defects like delamination of the active material layers and localized deformation of the separator as well as surface film coverages on the
anode as effects affecting the aging. Appling a light stack pressure on the electrodes housing helps to prevent the layer delamination. However, too high stack pressure accelerates the cyclic ageing due to enhanced delamination. In
the first part of our presentation, we discuss the electrical parameters like internal cell resistances, usable capacity, coulombic and energy efficiency of constrained Lithium-ion pouch cells at different temperatures. The second
part of the presentation provides the interfaces kinetics of constrained Lithium-ion pouch cells. We discuss tracking systems for battery stacks and look beyond possibilities for fast charging concepts using these tracking systems
based on the electrical parameters and the kinetics of constrained Li-ion pouch cells.
16:05 Q&A
16:25 Networking Reception with Exhibit & Poster Viewing (Sponsorship Opportunity Available)
17:25 Dinner Tutorial Check-In*
17:25 Close of Day
* Separate registration required
