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SUMMARY:Model-Based Prediction Augmented with Sensing Techniques for Batte
 ry Management Systems - Professor Anna G. Stefanopoulou\, University of Mi
 chigan
DTSTART:20150115T160000Z
DTEND:20150115T170000Z
UID:TALK57129@talks.cam.ac.uk
CONTACT:Tim Hughes
DESCRIPTION:Real-time estimation of internal battery states is critical fo
 r predicting and controlling the complex electrochemical\, thermal and mec
 hanical behavior of lithium-ion batteries. In this presentation\, I will h
 ighlight key accomplishments in:\n\n Inner-cell temperature estimation 
 and associated monitoring of cell aging using non-uniform forgetting facto
 rs to capture the long term resistance growth.\n\n Investigations for s
 ensor placement in large prismatic cells and pack thermal monitoring.\n\n
  Optimal control for fast warm-up from sub-zero temperatures.\n\n Re
 al-time power limit to improve safety from thermal runaways.\n\n State 
 of Charge (SOC) estimation augmented by bulk stress measurements utilizing
  the observed cell signature during lithium intercalation and thermal expa
 nsion.\n\n Estimation of individual cell SOC under cluster voltage meas
 urements \n\nIf time allows\, I will also show snapshots from our neutron 
 imaging for in situ measurement of the lithium concentration inside a comm
 ercial Lithium Iron Phosphate (LFP) pouch cell battery to define the valid
 ity limits of various model simplifications such as the electrode-averaged
  assumption in single-particle battery models.\n\nSupported by ARPA-E\, US
  Army\, NSF\, NIST\, A123\, Amphenol\, GE\, Ford\n\n\nBio Sketch:\n\nAnna 
 G. Stefanopoulou is a Professor at the Mechanical Engineering Department a
 nd the \n\nDirector of the Automotive Research Center at the University of
  Michigan. She is an ASME and an IEEE Fellow\, the Founding Chair of the A
 SME DSCD Energy Systems Technical Committee\, a member of the SAE Dynamic 
 System Modeling Standards Committee and a member of a U.S. National Resear
 ch Council committee on Vehicle Fuel Economy Standards. She has co-authore
 d a book on Control of Fuel Cell Power Systems\, 10 US patents\, 5 best pa
 per awards and more than 200 publications on estimation and control of int
 ernal combustion engines and electrochemical processes such as fuel cells 
 and batteries.\n\nhttp://www-personal.umich.edu/~annastef/
LOCATION: Cambridge University Engineering Department\, LR4
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