Battery Control Group
University of Michigan
Welcome to Battery Control Group in the Department of Mechanical Engineering at the University of Michigan!
We work on improving the cost, safety, and lifetime of batteries using a combination of experiments, physics-based modeling, control theory, and data analytics. We are also deeply committed to the education and workforce development needed for the transition to electrification.
Our main research interests are:
Battery Safety
Battery State Estimation and Diagnostics
Battery Degradation Modeling and Lifetime Prediction
Intelligent Battery Manufacturing
Electrification Workforce Development and Education
Head over to our research page to find out more!
Recent News
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: 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
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 Stefanopolou 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"
Session A04 - Battery Material Scale-up and Manufacturing
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).
