News
2023
May 30, 2023
A new pre-print for our work titled "Phenomenological model of lithium-ion battery formation cycling and aging" is now available for download here.
May 28, 2023
Sravan, Jason, Andrew, Clement, and Everardo are attending the 243rd ECS meeting in Boston, MA! They will be giving multiple oral and poster presentations throughout the conference:
Session F02: Multi-Scale Modeling, Simulation, and Design
Andrew: "Phenomenological Model of SEI Formation and Growth Leveraging Real-Time Expansion Measurements" | Slides | Paper
Jason: "Using Reference Electrodes to Validate Parameterization of Individual Electrode Soh in the Single Particle Model with Electrolyte"
Session A02: Lithium-Ion Batteries:
Clement: "Voltage Differential Analysis during Power Discharge Operation in Energy Storage Systems"
February 12, 2023
Videos and slides from the ACC 2022 Battery Workshop are now available!
2022
November 12, 2022
Anna gave the Saturday Morning Physics lecture Battery Management System: Engineering a Guardian Angel for Lithium-Ion Batteries. (according to the organizers, it was viewed 4.8k times within the first week).
Saturday Morning Physics, (the venue: Since 1995 The U-M Physics Department organizes Lectures designed for general audiences and open to the public. The Lectures are also recorded and are 1 hour long with 30 min of Q&A.
October 9, 2022
Sravan Pannala is going to present his work on "Impact of Data Window on Prediction of Battery Aging and Swelling" at ECS 242nd Meeting in Atlanta, GA
October 3-5, 2022
Our group has two papers for the 2022 Modeling, Estimation and Controls Conference in New Jersey
"Low-Cost Inductive Sensor and Fixture Kit for Measuring Battery Cell Thickness Under Constant Pressure" by Pannala et al. [video]
This paper was selected as a finalist for ASME Energy Systems Technical Committee (ESTC) Best Paper Award for MECC 2022
"Parallel-Connected Battery Current Imbalance Dynamics" by Weng et al.
September 29, 2022
Congratulations to Joe Drallmeier on his successful Dissertation Defense!
August 29-31, 2022
We have a paper for the 2022 IFAC Advances in Automotive Control (AAC) Conference in Columbus, OH (August 29-31) titled "A Fast Diagnostic to Inform Screening of Discarded or Retired Batteries" (Drallmeier et al.)
March 25, 2022
Anna was invited to serve at the Li-Bridge initiative, an effort coordinated by the US DoE to accelerate the development of a robust domestic supply chain for lithium-based batteries.
March 22, 2022
Congratulations to Dr. Eunjeong Hyeon on her successful Dissertation Defense!
March 10, 2022
Sravan Pannala passed his Dissertation Proposal Exam!
February 18, 2022
Joe Drallmeier passed his Dissertation Proposal Exam!
February 7, 2022
Jason Siegel was awarded the Kenneth M. Reese Outstanding Research Scientist Award for 2021-22 from the College of Engineering!
January 31, 2022
We have 5 papers accepted to the 2022 American Control Conference in Atlanta, GA (June 8-10), 2 for battery-related topics:
Methodology for Accelerated Inter-Cycle Simulations of Li-ion Battery Degradation with Intra-Cycle Resolved Degradation Mechanisms (Pannala et al.)
Equivalent Circuit Model for High C-Rate Discharge with an External Short Circuit (Tran et al.)
2021
26 October 2021 We have 3 papers presented at the Modeling, Estimation and Controls Conference (MECC)!
Safe charging algorithms: In this paper, we present a PI controller-based charging algorithm that imposes varying levels of constraints on variables pertinent to degradation, such as plating potential and mechanical stress. Furthermore, we discuss how uncertainties can be accounted for by considering safety margins for the plating and stress constraints.
Modeling first venting: This study presents a model for CO2 gas generation and internal cell pressure at elevated temperature, which can be used to predict the amount of CO2 generated for setting detection thresholds and predict venting timing based on the buildup of cell internal pressure.
23 October 2021 Our research article on "Predicting the impact of formation protocols on battery lifetime immediately after manufacturing" has been published. In this work, we have identified a low-cost and scalable diagnostic signal for screening batteries for lifetime.
23 October 2021 Our research article on "Predicting the impact of formation protocols on battery lifetime immediately after manufacturing" is out in Joule! In this work, we have identified a low-cost and scalable diagnostic signal for screening batteries for lifetime.
9 July 2021 Our perspective on "The challenge and opportunity of battery lifetime prediction from field data" is out in Joule. We explore the benefit of using field data for better battery lifetime estimation and hence improved reliability, safety, extended usage, and reduced cost, and address some of the challenges [Twitter thread]
9 July 2021 Our perspective on "The challenge and opportunity of battery lifetime prediction from field data" is out in Joule. We explore the benefit of using field data for better battery lifetime estimation and hence improved reliability, safety, extended usage, and reduced cost, and address some of the challenges [Twitter thread]
5 May 2021 Peyman Mohtat will be defending his thesis, "Advanced Diagnostics for Lithium-ion Batteries: Decoding the Information in Electrode Swelling", on May 18th
7 April 2021 Ting Cai will be defending his thesis, "Detection of Lithium-Ion Battery Failure and Thermal Runaway", on Wednesday 7th
6 April 2021 Vivian Tran will be presenting at the BMWS Three-Minute Thesis competition on "Harnessing Battery Abuse for Deactivation and Reignition Prevention"
16 March 2021 Three of our students will be presenting at the 239th ECS conference (May 30 - June 3).
Abstract 1 | Abstract 2 | Abstract 3
24 January 2021 Two of our papers have been accepted in the 2021 ACC!
2020
15 October 2020 A new article is up on ArXiv about "Promise and Challenges of a Data-Driven Approach for Battery Lifetime Prognostics", submitted for ACC 2021
8 October 2020 Valentin Sulzer presented at ECS PRiME 2020 on "Electrochemical Modeling of PEM Fuel Cells"
8 September 2020 Valentin Sulzer presented at the Battery Modeling Webinar Series on "Open-source battery modeling with PyBaMM"
29 July 2020 A new article is out in ECS on "Differential Expansion and Voltage Model for Li-ion Batteries at Practical Charging Rates"