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Control-Oriented Multi-Physics Battery Modeling for Fast Discharging Near the Venting Threshold
Control-Oriented Multi-Physics Battery Modeling for Fast Discharging Near the Venting Thre...
Control-Oriented Multi-Physics Battery Modeling for Fast Discharging Near the Venting Threshold

Detailed Information

자료유형  
 학위논문 서양
최종처리일시  
20260202105234
ISBN  
9798291567579
DDC  
620
저자명  
Tran, Vivian.
서명/저자  
Control-Oriented Multi-Physics Battery Modeling for Fast Discharging Near the Venting Threshold
발행사항  
[Sl] : University of Michigan, 2025
발행사항  
Ann Arbor : ProQuest Dissertations & Theses, 2025
형태사항  
142 p
주기사항  
Source: Dissertations Abstracts International, Volume: 87-02, Section: B.
주기사항  
Advisor: Siegel, Jason;Stefanopoulou, Anna.
학위논문주기  
Thesis (Ph.D.)--University of Michigan, 2025.
초록/해제  
요약To improve lithium-ion battery (LIB) safety, predictive multiphysics algorithms are needed that can manage battery operation from normal to abnormal conditions. To address this gap, this dissertation develops control-oriented multiphysics LIB models that capture behavior from normal operation to first venting with minimal parameterization. Two reduced-order multiphysics models are developed by extending a normal operation model to simulate LIB pouch cell behaviors under high temperatures and currents, observed during external short circuit (ESC) experiments. This includes diffusion-limited electrical behaviors, cell expansion, gas generation, and first venting. The model emphasizes computational efficiency by coupling an equivalent circuit model (EqCM) with lumped thermal and cell venting phenomena. This parameterizable model is used to develop a model-predictive controller for safe and fast emergency discharge. Simulations show that imposing temperature and pressure constraints while maximizing discharge current allows a cell to discharge to 60% SOC in 2.5minutes while avoiding venting. However, the empirical EqCM cannot transition between normal and early failure conditions. To address this, a physics-based Single Particle Model with Electrolyte (SPMe) is used to capture the transition between normal and abnormal behavior, predicting venting timing within 10~seconds, consistent with experiments. A global sensitivity analysis of the pouch cell venting model highlights that uncertainties in preload, solid-electrolyte interphase (SEI) decomposition parameters, and temperature-dependent foam stiffness strongly influence the cell expansion force across temperature and age. The venting model shows that gas generation is highly sensitive to SEI stability and quantity, which are difficult to quantify in situ. To this end, a voltage fitting method is combined with a modeled electrode capacity distribution, where the standard deviation represents cell inhomogeneity. Inhomogeneity can accelerate degradation in localized regions, increasing the risks of failure. Taking into account inhomogeneity when characterizing degradation in cells with 50% capacity loss significantly reduced the differential voltage error throughout LIB life. These advances pave the way for an advanced state-of-health (SOH) estimation that accounts for inhomogeneity to help guide robust, aging-aware detection and mitigation strategies.
일반주제명  
Engineering
일반주제명  
Energy
일반주제명  
Mechanical engineering
키워드  
lithium-ion battery
키워드  
Battery safety
키워드  
Solid-electrolyte interphase decomposition
키워드  
External short circuit experiments
기타저자  
University of Michigan Mechanical Engineering
기본자료저록  
Dissertations Abstracts International. 87-02B.
전자적 위치 및 접속  
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MARC

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■1001  ▼aTran,  Vivian.
■24510▼aControl-Oriented  Multi-Physics  Battery  Modeling  for  Fast  Discharging  Near  the  Venting  Threshold
■260    ▼a[Sl]▼bUniversity  of  Michigan▼c2025
■260  1▼aAnn  Arbor▼bProQuest  Dissertations  &  Theses▼c2025
■300    ▼a142  p
■500    ▼aSource:  Dissertations  Abstracts  International,  Volume:  87-02,  Section:  B.
■500    ▼aAdvisor:  Siegel,  Jason;Stefanopoulou,  Anna.
■5021  ▼aThesis  (Ph.D.)--University  of  Michigan,  2025.
■520    ▼aTo  improve  lithium-ion  battery  (LIB)  safety,  predictive  multiphysics  algorithms  are  needed  that  can  manage  battery  operation  from  normal  to  abnormal  conditions.  To  address  this  gap,  this  dissertation  develops  control-oriented  multiphysics  LIB  models  that  capture  behavior  from  normal  operation  to  first  venting  with  minimal  parameterization.  Two  reduced-order  multiphysics  models  are  developed  by  extending  a  normal  operation  model  to  simulate  LIB  pouch  cell  behaviors  under  high  temperatures  and  currents,  observed  during  external  short  circuit  (ESC)  experiments.  This  includes  diffusion-limited  electrical  behaviors,  cell  expansion,  gas  generation,  and  first  venting.  The  model  emphasizes  computational  efficiency  by  coupling  an  equivalent  circuit  model  (EqCM)  with  lumped  thermal  and  cell  venting  phenomena.  This  parameterizable  model  is  used  to  develop  a  model-predictive  controller  for  safe  and  fast  emergency  discharge.  Simulations  show  that  imposing  temperature  and  pressure  constraints  while  maximizing  discharge  current  allows  a  cell  to  discharge  to  60%  SOC  in  2.5minutes  while  avoiding  venting.  However,  the  empirical  EqCM  cannot  transition  between  normal  and  early  failure  conditions.  To  address  this,  a  physics-based  Single  Particle  Model  with  Electrolyte  (SPMe)  is  used  to  capture  the  transition  between  normal  and  abnormal  behavior,  predicting  venting  timing  within  10~seconds,  consistent  with  experiments.    A  global  sensitivity  analysis  of  the  pouch  cell  venting  model  highlights  that  uncertainties  in  preload,  solid-electrolyte  interphase  (SEI)  decomposition  parameters,  and  temperature-dependent  foam  stiffness  strongly  influence  the  cell  expansion  force  across  temperature  and  age.  The  venting  model  shows  that  gas  generation  is  highly  sensitive  to  SEI  stability  and  quantity,  which  are  difficult  to  quantify  in  situ.    To  this  end,  a  voltage  fitting  method  is  combined  with  a  modeled  electrode  capacity  distribution,  where  the  standard  deviation  represents  cell  inhomogeneity.  Inhomogeneity  can  accelerate  degradation  in  localized  regions,  increasing  the  risks  of  failure.  Taking  into  account  inhomogeneity  when  characterizing  degradation  in  cells  with  50%  capacity  loss  significantly  reduced  the  differential  voltage  error  throughout  LIB  life.  These  advances  pave  the  way  for  an  advanced  state-of-health  (SOH)  estimation  that  accounts  for  inhomogeneity  to  help  guide  robust,  aging-aware  detection  and  mitigation  strategies.
■590    ▼aSchool  code:  0127.
■650  4▼aEngineering
■650  4▼aEnergy
■650  4▼aMechanical  engineering
■653    ▼alithium-ion  battery
■653    ▼aBattery  safety
■653    ▼aSolid-electrolyte  interphase  decomposition
■653    ▼aExternal  short  circuit  experiments
■690    ▼a0537
■690    ▼a0791
■690    ▼a0548
■71020▼aUniversity  of  Michigan▼bMechanical  Engineering.
■7730  ▼tDissertations  Abstracts  International▼g87-02B.
■790    ▼a0127
■791    ▼aPh.D.
■792    ▼a2025
■793    ▼aEnglish
■85640▼uhttp://www.riss.kr/pdu/ddodLink.do?id=T17359905▼nKERIS▼z이  자료의  원문은  한국교육학술정보원에서  제공합니다.

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