2025

July 7-10, 2025

See you at the American Control Conference, 2025, in Denver!

May 7-8, 2025

We were at the Battery & EV Congress (BEV) organized by the Global Automotive Management Council in Troy, Michigan!

Professor Anna spoke about Degradation and Short Detection in Parallel-Connected Cell Groups.

Apoorva & Hamid presented on Health Estimation for Second Use/Life Batteries.

April 14-16, 2025

We attended the SAE World Congress conference in Detroit! 

As part of the Battery Safety Summit, Vivian Tran participated in a panel discussion on "Shaping the Future of E-Mobility: Safety, Sustainability, and Design Challenges”.

In addition, the following members presented:

Omar: Control-Oriented Statistical Model of In-Cylinder Pressure, Combustion Phasing, and Torque for Compression-Ignition Engines Operating with Low Cetane Fuels

Ali: Initial Assessment of Component Sizing and Power-Split for Fuel Cell Hybrid Electric Heavy-Duty Trucks

Ashwin: Lessons and Challenges from Crowd-Sourced Data in Rural Michigan to Assess EV Suitability based on Analyzing Personal Driving

Apoorva: Electric Vehicle Batteries: Repurposing for Second Life

2024

October 28-30, 2024

The group attended the 2024 Modeling, Estimation, and Control Conference (MECC) in Chicago.

Anna Stefanopoulou gave the prestigious Nyquist Lecture, titled Battery State Estimation from Manufacturing to End of Life.

We also presented the following lightning talks and posters:

Zhiwen (presented by Xin Hui): Degradation and Expansion of Lithium-Ion Batteries with Silicon/Graphite Anodes: Impact of Temperature, Pretension and State-Of-Charge Window 

Jingchen: Opportunities for Improving Winter Performance of Electric School Buses with Thermal Preconditioning

Vivian: Sensitivity of Li-Ion Battery Aging on Cell Venting Behavior

Sravan: Tuning Physics-Based Models for Battery Lifetime Prediction

Andrew: On Using "OCV-R" to Describe Parallel-Connected Battery System Dynamics: Deeper Insights from Simpler Models, and

Towards Battery Formation Protocol Optimization Via Pressure, Temperature, and Current Control: New Experimental and Modeling Insights 

Hamid: Throughput Gained versus Days Lost (TvD) in V2G Services Considering Multiple Battery Degradation Mechanisms, and

      The Case for DeepSOH: Addressing Path Dependency for Remaining Useful Life in Li-Ion Batteries 

October 6-11, 2024

The group attended ECS PRiME (Pacific Rim Meeting), 2024 in Hawaii, where the following talks were presented:

Jason Siegel: (Keynote) on the Challenges and Opportunities for Parameterizing Multi-Physics Battery Models with Expansion Measurements

Vivian Tran: (Invited) Impact of Preload Compression and Aging on High-Temperature Li-Ion Battery Pouch Cell Venting

Zhiwen Wan, Sravan Pannala: Modeling Degradation to Predict Capacity and Cell Level Reversible and Irreversible Expansion throughout Life across Various Cycling Conditions

Apoorva Roy: Forecasting Electrode State of Health (eSOH) for Managing Battery Lifetime Using Domain-Knowledge-Informed Machine Learning

September 16, 2024

Our paper "Higher labor intensity in US automotive assembly plants after transitioning to electric vehicles" is now published open access in Nature Communications!

May 20, 2024

The group attended Cell Symposia: Technology barriers to electric vehicle implementation at University of Michigan. 

Anna Stefanopoulou gave an invited talk titled "Battery Mechatronics: Decoding Battery Expansion from Manufacturing to End of Life". This invited talk will be a part of Session 2: Battery Management and Safety chaired by Jason Siegel on May 21. 

Vivian, Omar, Jingchen, Zhiwen presented posters on Tuesday May 21: 

Vivian: "Enhancing Safety by Predicting the Venting Timing of Abused Li-ion Batteries"

Omar: "30% fewer jobs in EV assembly plants: harbinger or myth?"

Jingchen: "Thermal Preconditioning of Electric School Buses During Cold Weather Operation"

Zhiwen: "Identification framework for degradation mechanisms in lithium-ion batteries with composite material electrodes"

Andrew, Clement, Hamid, Sravan presented posters on Wednesday May 22: 

Andrew: "Battery formation modeling and end-of-line diagnostics: toward closed-loop battery manufacturing process control"

Clement: "Detection of high-risk imbalances in parallel-connected cell groups"

Hamid: "Benefit to harm (B2H) of bulk V2G operations "

Sravan: "Impact of applied pressure on cell irreversible dimensional changes as the cell ages"

May 20, 2024

Sravan, Hamid, Andrew, Vivian, and Zhiwen will be attending the 244rd ECS meeting in San Francisco! They will be giving multiple oral and poster presentations throughout the conference:

Session A02: Lithium-Ion Batteries:

Sravan: "Lifetime Predictive Model of Capacity Loss, Resistance Increase, and Irreversible Thickness Growth"

Hamid: "Benefit to Harm (B2H) Ratio for Bulk Vehicle to Grid (V2G) Services Using Lifetime Degradation Digital Twin: Emulating Various Dominant Degradation Mechanism"

Vivian: "A Reduced-Order Model of the Coupled Venting-Thermal-Electrochemical Behavior to Predict First Venting Under External Short Circuit Conditions"

Session A04 - Battery Material Scale-up and Manufacturing

Andrew: "Towards Rational Design of Battery Formation Protocols: From Electrochemical Modeling to Factory Deployment"

Session A05 - Cathode & Anode Materials

Zhiwen: "Impact of Pretension and Cycling Window on Degradation of Graphite/Silicon Composite Anodes"

April 16-17, 2024

We attended the SAE World Congress conference in Detroit! 

Apoorva presented her talk "V2X Communication Protocols to Enable EV Battery Capacity Measurement: A Review".

Omar presented his talk "30% Fewer Jobs in EV Assembly Plants: Harbinger or Myth?".

Anna Stefanopoulou participated on the panel "How to apply technical skills and knowledge from traditional (i.e., fossil fuels) engine development to the development of components and management systems for alternative fueled engines, batteries and fuel cells?".

January 31, 2024

Clement's paper "Differential Voltage Analysis and Patterns in Parallel-Connected Pairs of Imbalanced Cells" was accepted to the 2024 American Control Conference in Toronto, Canada (July 8-12). 

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