Cambridge EnerTech’s

Battery Managment Systems

Engineering Reliability and Robustness

March 27-28, 2019


Creating safe battery cells and designing robust battery management systems are vital to successful battery integration. Creating versatile and well-designed battery management systems is one of the top hurdles battery engineers face. Hear from top scientists as they provide insight on how to extend the life of their battery packs and use battery management systems to maintain storage capacity and maintain safety. High-level battery pack engineers, and battery scientists from OEMS, national labs, and top academic institutions will discuss designing internal battery pack structure, new SOC and SOH monitoring methods, and simplifying circuitry to develop reliable and robust batteries.

Final Agenda

Wednesday, March 27

1:45 Plenary Keynote Session: Organizer's Remarks

1:50 Shep Wolsky Battery Innovator Award

2:00 PANEL DISCUSSION: What Innovations/Advancements Do OEMs Need to Enable Near-Term, Large-Scale Production?

Moderator:

Celina Mikolajczak, Director of Engineering, Energy Storage Systems, Uber


 

Panelists:

Mohamed Alamgir, PhD, Research Director, LG Chem

Micheal Austin, Vice President, BYD US Operations (BYD America-IT, BYD Motors, BYD Energy)

Craig Rigby, Vice President Technology, Power Solutions, Johnson Controls

Bob Taenaka, Technical Specialist, Battery System Development, Ford Motor Company

What do OEMs need for near term, large-scale innovation? Can the global battery R&D community deliver on what advancements OEMs need for large-scale production? Our distinguished panel will discuss what they need to innovate and what they anticipate their future requirements will be. In addition, our panelists will discuss what innovation can be achieved to meet the OEMs requirements.

2:55 Refreshment Break in the Exhibit Hall with Poster Viewing

NEW OUTLOOKS ON BATTERY MANAGEMENT SYSTEMS

3:40 Organizer’s Opening Remarks

Victoria Mosolgo, Conference Producer, Cambridge EnerTech

3:45 Chairperson’s Remarks

Anil Paryani, CEO, CTO, Automotive Power, Inc.

3:50 A New Paradigm of Lithium-Ion Batteries

Chao-Yang Wang, PhD, William E. Diefenderfer Chair Professor, Pennsylvania State University

4:20 Software First Approach to BMS

Anil Paryani, CEO, CTO, Automotive Power, Inc.

There are many types of balancing hardware and software architectures for lithium battery packs. Passive bleed and active (inductive) balancing circuits are considered. For controls, different strategies are employed for EVs vs. HEVs.

4:50 Strain-Enabled Multi-Physical Models of Li-Ion Battery Cells for Control and State Estimation

Bogdan Epureanu, PhD, Professor, Mechanical Engineering, University of Michigan

This presentation focuses on recent results of creating multiphysical models that enable the use of strain to enhance control and state estimation of battery cells. This model can capture electrical, thermal, and mechanical behaviors of battery cells.

5:20 Dinner Tutorial Registration*


5:457:45 Dinner Tutorial*

7:45 Close of Day

Thursday, March 28

7:30 am Registration Open

7:45 Interactive Breakout Discussion Groups with Continental Breakfast (See website for details.)

8:45 Session Break

BMS MODELING & CONTROLS

9:00 Chairperson’s Remarks

Brian Barnett, President, Battery Perspectives

9:05 Advances in Methods to Generate Reduced-Order Physics-Based Li-Ion Cell Models for BMS Controls

Gregory Plett, PhD, Professor, Electrical and Computer Engineering, University of Colorado, Colorado Springs

Equivalent-circuit models cannot predict internal cell dynamics and hence cannot be used by next-generation controls to predict the onset of degradation behaviors and therefore mitigate aging. Physics-based models must be used. And, these models must be computationally simplified for practical application. Methods are needed to convert high-complexity physics-based models into reduced-order models. This presentation will show advances in methods to create reduced-order physics-based models. This is an important enabler of using physics-based models in BMS.

9:35 A Multi-Cell Battery-Management Approach to Ease Performance Restrictions Imposed by Weakest Cell

Scott Trimboli, PhD, Associate Professor, Electrical and Computer Engineering, University of Colorado, Colorado Springs

This presentation describes a novel multi-cell control approach (implemented in the context of an active-balancing architecture) that monitors individual cell behavior and acts to reduce the limiting effect of the weakest cell on overall pack performance.

10:05 Battery Performance and the Internet of Things

Wilson Lee, Senior Technical Marketing Manager, Marketing, Tektronix, Inc.

The Internet of Things affects all aspects of our lives in one way or another. Battery performance – specifically battery life cycle – is a key enabler in this paradigm. Designers are needing to precisely and reliably measure, simulate and model battery life cycles in the presence of very small current requirements. Attendees will come away better being able to meet the challenges on selecting and qualifying low power components, and reliably measuring power consumption.

10:35 Coffee Break in the Exhibit Hall with Poster Viewing

11:20 Improved Cell Behavior Understanding for Better Parametrized Control Models

Yatish Patel, PhD, Research Fellow, Department of Mechanical Engineering, Imperial College of London

Presented is a novel adiabatic experimental procedure which investigates cell heat generation, independent of other parameters such as state of charge and internal cell concentration gradients. This facilitates an assessment of the impact of temperature on the cell’s performance.

11:50 Power Electronic-Based Active Battery Energy Management Solutions for E-Transportation and Autonomous E-Mobility

Sheldon Williamson, PhD, Associate Professor, University of Ontario

Fundamental topologies of power electronic converters, specifically utilized for bidirectional current flow in cell balancing applications, will be discussed. The design, implementation, and testing/validation of an active cell equalization circuit for a traction Li-ion battery pack will also be presented.

12:20 pm Effective Battery Control Instead of Monitoring and Balancing the Death of the Battery

Hans Harjung, CEO, e-moove GmbH

Monitoring and balancing has been state-of-the-art in battery management (BMS) for 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.

12:50 Walking Luncheon in the Exhibit Hall with Poster Viewing or Plated Luncheon in the Exhibit Hall Foyer (Sponsorship Opportunity Available)

1:50 Dessert Break in the Exhibit Hall with Poster Viewing

LIFE & RELIABILITY

2:20 Chairperson’s Remarks

Margret Wohlfahrt-Mehrens, PhD, Head of Department, Accumulators Materials Research, ZSW

2:25 Rapid Charging Made Practical in Lithium Batteries via Integrated Surface Acoustic Wave Turbulent Electrolyte Mixing to Overcome Diffusion-Limited Charging

James Friend, PhD, Professor, Mechanical and Aerospace Engineering, University of California, San Diego

We aim to overcome diffusion limitations in charging liquid electrolyte lithium-ion batteries through inclusion of robust, fingernail-sized, and solid-state ~100-MHz surface acoustic wave microdevices that produce turbulent acoustic streaming even through separator structures. These low-power (~10 mW of power per 1 cm^2 of electrode area) devices are fabricated from single crystal lithium niobate and are compatible with lithium electrochemistry.

2:55 Instrumented Commercial Lithium Batteries

Rohit Bhagat, PhD, FIMMM, Associate Professor, Head, Electrochemical Engineering Group, International Automotive Research Centre, WMG, University of Warwick

This presentation focuses on utilisation of embedded reference electrodes, fibre optics and sensors within commercial 18650 lithium-ion cells. These instrumented cells are then used to conduct in operando investigations of lithium battery safety by giving real-time information on the internal state of the battery.

3:25 Lithium Plating: A Critical Side Reaction in Lithium-Ion Cells

Margret Wohlfahrt-Mehrens, PhD, Head of Department, Accumulators Materials Research, ZSW

This presentation will detail the following: How lithium plating affects lifetime and safety, how to predict lithium plating, how to avoid lithium plating, how to select charging protocols to avoid lithium plating.

3:55 Presentation to be Announced

4:25 Networking Refreshment Break


4:40 Closing Plenary Keynote Session: Organizer's Remarks

4:40 - 5:40pm PANEL DISCUSSION: Solving the Innovation Barrier for Production of Improved Li-Ion

Moderator:

Brian Barnett, President, Battery Perspectives


 

Panelists:

Michael Fetcenko, Director, Global Licensing, BASF Battery Materials, BASF

Tobias Glossman, Senior Engineer, Mercedes-Benz Research and Development North America

Bruce Miller, Technology Strategist, Dell

Donald R. Sadoway, PhD, John F. Elliott Professor of Materials Chemistry, Department of Materials Science and Engineering, Massachusetts Institute of Technology

Paul Schiffbanker, Product Manager Battery Systems, AVL

Demands for improved lithium-ion are increasing even while markets are expanding dramatically amidst relentless cost reduction pressures. New materials, components and technologies are required, and an unprecedented level of R&D is responding. Battery manufacturers and their suppliers face enormous engineering and investment challenges ramping up production. One consequence is a major innovation barrier:  long multi-year qualification periods and technologies “frozen” for manufacturing. This culture requires screening of new technologies in complete cells. Most innovators do not make cells or know how to demonstrate realistic cell-level performance. This panel of experts will examine these challenges and consider approaches to unblock innovation.

5:45 Close of Conference


* The program is subject to change without notice, due to unforeseen reason.

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