Cambridge EnerTech’s

Battery Engineering for Automotive Applications

Meeting the Global Demand for Safe, Higher Energy Batteries

October 29-30, 2019

To meet demand, engineers must consider many factors including materials, design, integration and safety. This international forum will bring together delegates from the key organizations within the global battery community to discuss the latest engineering advancements. This conference will encompass both cell and pack engineering and how advancements in these areas will meet the demand for safer, higher energy density batteries.

Final Agenda

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Tuesday, October 29

8:00 Registration and Morning Coffee

BATTERY MANAGEMENT SYSTEMS

9:00 Chairperson’s Opening Remarks

Brian Barnett, PhD, President, Battery Perspectives LLC

9:05 Addressing Key Battery Issues for Electromobility

Rachid Yazami, PhD, School of Materials Science & Engineering, Program Director, Energy Storage, Energy Research Institute, Nanyang Technological University, Singapore; Founding Director, KVI PTE, LTD

Lithium-ion batteries (LIB) are expected to play a major role in the future of electromobility owing to outstanding energy storage performances. Yet, several issues still need to be addressed to ensure a smooth mass-market acceptation and penetration. Among important issues are safety, long service life, and fast charging. At KVI, we have developed a thermodynamics-based technology, which proved to efficiently serve as a diagnosis tool to assess online LIB cell’s state of charge, state of health, and state of safety.

9:30 Low Material Cost and High Safety Level High-Voltage BMS Concept

Jaehoon Park, Principal Engineer, Samsung SDI

General BMS description based on the difference between low-voltage (LV from below) & high-voltage (LV from below) BMS. The key features of HV BMS, in addition to the LV BMS feature, will be presented. Trade-off between safety and cost – generally speaking, high safety requirement is figured out to result in high material cost. However, it could be the opposite way, such that high safety requirement enforces to implement low cost BMS concept. The idea and justification will be presented.

9:55 A Prediction-Based Lithium-Ion Multi-Cell Battery-Management Approach to Address Performance Limitations Imposed by Weakest Cell

Scott Trimboli, PhD, Associate Professor, Department of Electrical & Computer Engineering, College of Engineering & Applied Science, University of Colorado

Electric vehicle (EV) battery systems require careful and continuous management to ensure safe and reliable performance. This presentation describes a novel multi-cell control approach (in the context of an active-balancing architecture) that monitors individual cell behavior and acts to mitigate the limiting effect of the weakest cell on overall pack performance.

10:20 Grand Opening Coffee Break in the Exhibit Hall with Poster Viewing

10:50 On-Board Diagnostic Power Fade Monitoring as Function of State of Charge of Higher Energy Density Lithium-Ion Batteries

Pierrot Sassou Attidekou, PhD, Faraday Institution Research Fellow, School of Engineering, Newcastle University

Both energy and power density of Li-ion batteries degrade with aging and hence, impede their health. A realistic, accelerated aging driving cycling profile has been designed and applied to Kokam-type batteries. An in situ method was utilized to estimate the internal resistance. The resistance growth was monitored and modelled at three different voltage regions. The model shows that the batteries degrade less around the nominal voltage when compared to other voltage regions.

11:15 Closing the Gap Between the Features of the Individual Cells and the Performance of the Battery Pack

Hans Harjung, PhD, CEO & Founder, e-moove GmbH

Today’s features of an individual automotive battery cell would enable EVs to run more than a million kilometers (3-5000 cycles of 3-500 km). But real-life-data shows a different and quite heterogeneous picture. The difference is based on the heterogeneous aging of the individual cells. Today’s balancing strategies cannot get out the full potential of the battery. A completely new approach is needed: effective control of each individual cell by its health and aging parameters.

11:40 From Battery to BMS to Battery Intelligence System (BIS): Preparing Global Industry for the Electrification Tsunami

Tal Sholklapper, MS, PhD, CEO, Voltaiq

To accelerate battery development and qualification in order to meet aggressive new product launches, companies are making investments into personnel, equipment, and Battery intelligence Systems (BIS). This presentation introduces BIS and explains how they are enabling battery teams to work more efficiently to meet launch targets.

12:05 Understanding and Formulations of Material Selection for Battery Pack Designs

Terence Kearns, Manager, Business Development, WEVO-CHEMIE GmbH

WEVO-CHEMIE GmbH, years of research and amassed data from customers, applications and industry stakeholders, has complied a simpler guide for material selection. Explain the key attributes and boundaries of each chemistry. Considerations for processing and the consequent disparate influences. Formulated into an easy to understand engineering format.

12:30 Q&A

12:50 Networking Lunch

13:45 Dessert Break in the Exhibit Hall with Poster Viewing

BATTERY PERFORMANCE & ENGINEERING

14:15 Chairperson’s Remarks

Tal Sholklapper, CEO & President, Voltaiq

14:20 How Ragone Plots Illustrate Performance Prospects for EVs

Brian Barnett, PhD, President, Battery Perspectives LLC

Power-Energy curves, now widely known as “Ragone Plots” were first employed in 1967 by David Ragone during US government hearings into air pollution and the prospects for electric vehicles. The first plots illustrated the status of batteries circa 1965, clearly demonstrating the challenges batteries faced to deliver both the required range and power for EVs. With EVs now a growing reality, much has changed. This talk uses Ragone plots to illustrate how battery technology changed and still can improve.

14:45 Increasing Battery Systems Performance and xEV Industry Trends Analysis

Kevin Konecky, Battery Systems Consultant, Total Battery Consulting, Inc.

Battery systems are complex systems with the battery cell as the core technology of the system, but then integrated with multiple subsystems, including mechanical, thermal, and battery management systems (BMS). This presentation will look into the different subsystems that contribute to the overall battery system performance and opportunities for improvement in next-generation battery systems. Industry trends will be evaluated to show how the xEV industry has progressed over the recent wave of electrification.

15:10 Refreshment Break in the Exhibit Hall with Poster Viewing

15:50 Homogenized Cylindrical Cell Model for Thermal-Structural Simulation of the Module

Youngwon Hahn, PhD, Senior Industry Solution Manager, SIMULIA T&M Initiative, Dassault Systemes SIMULIA

In this talk, the methodology to build the numerical model for homogenized cylindrical battery cell model which can capture SOC-dependency and strain-rate dependency is presented. Some of the results in module-level structural and thermal simulation are also discussed.

16:15 Analysis of LV-xEV Applications and Battery Design Optimization with SCiB™

Masahiro Sekino, Chief Specialist, Battery System Application Engineering Department, Toshiba Corporation

Low-voltage hybrid vehicles (LV-xEV) with lithium-ion battery will prevail to be mainstream in the near future. On the other hand, a difference in system voltage (12V through 48V) will be evident depending on region (Japan and Europe). In this presentation, the energy and power requirement of various components for a LV-xEV system will be analyzed in the viewpoints of fuel efficiency and CO2 emission. Furthermore, optimized battery design with SCiB will be proposed.

16:40 Detecting, Diagnosing, and Controlling Degradation in Lithium-Ion Battery Packs

Gregory Offer, PhD, Senior Lecturer, Mechanical Engineering, Imperial College London

The latest work of the electrochemical science & engineering group at Imperial College London on understanding how thermal management affects performance and degradation, and how thermal techniques can be used to detect and diagnose path-dependent degradation will be presented. A comparison of surface cooling vs. tab cooling shows that surface cooling limits useable capacity considerably and causes accelerated degradation.

17:05 Innovative and State-of-Art LASER Technologies for Battery Manufacturing

Shigeto Mizutani, Market Development Manager, Sales Development, Automotive, Coherent Japan Inc.

Laser has been expected as a cost- and energy-saving process tool that enables material processing more precise and faster. Batteries, especially for EV, are demanded to be lighter weight with higher capacity. Coherent is introducing new laser developments for EV materials processing utilizing the unique process expertise and know-how.

17:30 Sponsored Presentation (Opportunity Available)

17:55 Q&A

18:15 Close of Day

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18:15 Tutorial Registration*

18:30 - 20:45 TUT5: Improving the Energy Density of Batteries with Silicon-Based Anodes

TUT6: Lithium-Ion Battery Raw Materials Markets: Supply and Demand Outlook and Pricing Evolution

*Separate registration required.

Wednesday, October 30

8:30 Registration and Morning Coffee

BATTERY SAFETY

9:00 Chairperson’s Remarks

Kevin Konecky, Battery Systems Consultant, Total Battery Consulting, Inc.

9:05 EDV Explosion and Fire Mechanism and a Method to Stop the Explosion and the Fire of EDV

John Zhang, PhD, Senior Technical Executive Officer, Asahi Kasei Separator

Based on our old and new studies, a NEW understanding of EDV explosion and fire will be presented. At meantime we will also show our new and TRULY effective and simple technologies (patents pending) to STOP or greatly reduce EDV explosion and/or fires.

9:30 Safety Testing of Cells Helping in Design of Battery Packs

Johannes Roessner, Global Focus Segment Manager NEV, Transportation Testing, TÜV SÜD

Safety testing of cells does not only give insights into the behavior of the cell, but also helps to draw conclusions about the design of the module and pack. This helps to speed up development time and gain results more efficiently.

9:55 Numerical Prediction and Countermeasure Evaluation for Cell Venting and Thermal Runaway in Lithium-Ion Battery Systems

Daniele Suzzi, PhD, Lead Engineer HV-Battery & EE Thermal, CFD-Simulation, Engineering and Technology Powertrain Systems, AVL LIST GmbH

While the failure of a single cell leads to a rather limited hazard, the propagation to adjacent cells may release the whole energy stored in the battery pack, leading to severe conditions, such as fire and fierce explosions. These investigations are of significant relevance for developing strategies to prevent or postpone TR propagation, as well as to meet safety requirements for LIB modules in electric vehicles.

10:20 Coffee Break in the Exhibit Hall with Poster Viewing

10:50 Lessons Learned from Post-Mortem Analysis of Degraded Li-Ion Batteries

Mariyam Darma, Institute for Applied Material-Energy Storage System, Karlsruhe Institute of Technology

Tremendous works on post-mortem analysis have successfully revealed the most dominant mechanisms for battery degradation in correlation with the cycling and storage histories of the cells, such as charge rate, depth of discharge, operating voltage window, temperature, and state of charge. Interesting questions: How do relevant industries (automotive and battery) take benefit from the results? For battery second-life application: Can we use the current know-how to recommend a robust routine to predict the main degradation mode of batteries that have reached their end of life?

11:15 Comprehensive Degradation Analysis of the PEFCs Operated in Different Conditions by Morphological and Chemical Structure Analysis

Tsuyoshi Akiyama, Senior Research Chemist, Organic Analysis Laboratory, Toray Research Center

Degradation analysis of the respective sites (catalyst layer, electrolyte membrane, and wastewater) of polymer electrolyte fuel cell (PEFC) subjected to the start-stop cycle test and the load cycle test were performed by morphological structure analysis (X-ray CT, SEM, EPMA) and chemical structure analysis (GPC, IC, LC/MS, LC/CAD). As a result, the morphological and chemical structure changes were different between two type cycle tests.

11:40 Sponsored Presentation (Opportunity Available)

12:30 Q&A

12:50 Networking Lunch

13:45 Dessert Break in the Exhibit Hall with Poster Viewing

14:15 Close of Battery Engineering for Automotive Applications

Day 1 | Day 2 | Download Brochure