2022 American Controls Conference Workshop

Rapid Intro to Battery Modeling and Control

Full-Day Schedule

Sunday, May 22 via zoom only AND Tuesday, June 7 only in-Person at ACC

(8:30 am-5:30 pm EST)

Organizers: Jason B. Siegel*, Anna G. Stefanopoulou, Youngki kim, Scott Moura, and Xinfan Lin

Videos and slides are now available.

Registrations are handled by ACC 2022.

1) Introduction to Battery Systems

a) Battery Operation, Basic Chemistries, Operating Window, Degradation

b) Systems-Level Specifications: Power, Energy/Range, Sizing

c) Fleet example, routes, pack size, charging alternatives, and optimization, including techno-economic analysis, total cost of ownership, CAPEX for EV transition

2) Equivalent Circuit Methods (OCV-R-RC, OCV-Z, etc)

Electric Behavior

9:15 a) Rational and Parameterization of Equivalent Circuit Models

9:30 b) Electrochemical Impedance Spectroscopy and Physical Interpretation

9:45 c) State of Charge (SOC) Estimation, Model Sensitivity

Electro-Thermal Behavior

10:00 a) Cell-level (from fundamental Heat transfer to identifiable, Cyl & Prism)

10:15 b) Parameter Identification and application to cooling or thermal runaway faults:

10:30 c) State of Power estimation (power limits, derating)

Scale-up & Applications

10:45 a) Fast & safe charging via Reinforcement Learning

11:00 b) Pack State-of-X estimation: Challenges

11:15 c) Pack State-of-X estimation: Solutions via Control Theory & Machine Learning

11:30 d) Fast Discharge during External Short

11:45 e) Optimal Control for Warm-up cold start-up

3) Advanced State Estimation using Electrochemical Models

12:00 a) First-Principle Electrochemical Model and simplification to Single Particle Model with Electrolyte and Temperature dynamics (SMPeT); correlation to Equivalent Circuit Model and EIS

12:20 b) SPM-based battery state and parameter estimation;

12:40 c) Input excitation design for estimating key electrochemical parameters leveraging optimal control and reinforcement learning

1:00-2:00 Lunch

4) Degradation Mode Estimation and Diagnostics.

2:00 a) Capacity and Power Fade, Electrode Stoichiometries, Loss of Active Material

2:15 b) Quantifying Electrode-specific (Cathode & Anode) degradation

2:30 c) Measuring, modeling, and leveraging cell swelling due to aging

2:45 d) Multi-particle model

5) Degradation Modeling for Remaining Cycle Life Prediction/Prognostics

3:00 a) Degradation Mechanisms (what they are, how they hide & interact)

3:15 b) Aging Parameter Tuning for Life Prediction (knee points)

3:30 c) Charging and Balancing

5) Safety and Manufacturing

3:45 a) Abnormal Operation, Thermal Runaway

4:00 b) Sensing, Detecting Faults

4:15 c) Challenges in Fire Suppression and First Response (Venting, ..)

4:30 d) Challenges and Opportunity for control in Battery Manufacturing

Note 1: We hope to have all the material (recording, slides, etc.) available several days before the workshop to get a head start or to cover topics asynchronously if you cannot attend the entire live events.

Note 2: The Tues June 7th event will be in person and there will not be live zoom availability