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Title: Thermal modeling of the lithium/polymer battery

Abstract

Research in the area of advanced batteries for electric-vehicle applications has increased steadily since the 1990 zero-emission-vehicle mandate of the California Air Resources Board. Due to their design flexibility and potentially high energy and power densities, lithium/polymer batteries are an emerging technology for electric-vehicle applications. Thermal modeling of lithium/polymer batteries is particularly important because the transport properties of the system depend exponentially on temperature. Two models have been presented for assessment of the thermal behavior of lithium/polymer batteries. The one-cell model predicts the cell potential, the concentration profiles, and the heat-generation rate during discharge. The cell-stack model predicts temperature profiles and heat transfer limitations of the battery. Due to the variation of ionic conductivity and salt diffusion coefficient with temperature, the performance of the lithium/polymer battery is greatly affected by temperature. Because of this variation, it is important to optimize the cell operating temperature and design a thermal management system for the battery. Since the thermal conductivity of the polymer electrolyte is very low, heat is not easily conducted in the direction perpendicular to cell layers. Temperature profiles in the cells are not as significant as expected because heat-generation rates in warmer areas of the cell stack are lower thanmore » heat-generation rates in cooler areas of the stack. This nonuniform heat-generation rate flattens the temperature profile. Temperature profiles as calculated by this model are not as steep as those calculated by previous models that assume a uniform heat-generation rate.« less

Authors:
 [1]
  1. Univ. of California, Berkeley, CA (United States). Dept. of Chemical Engineering
Publication Date:
Research Org.:
Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
Sponsoring Org.:
USDOE Office of Energy Efficiency and Renewable Energy (EERE), Vehicle Technologies Office (EE-3V)
OSTI Identifier:
10107731
Report Number(s):
LBL-36293
ON: DE95004680;; TRN: AHC29505%%20
DOE Contract Number:  
AC03-76SF00098
Resource Type:
Thesis/Dissertation
Resource Relation:
Other Information: TH: Thesis (M.S.); PBD: Oct 1994
Country of Publication:
United States
Language:
English
Subject:
25 ENERGY STORAGE; 33 ADVANCED PROPULSION SYSTEMS; ELECTRIC-POWERED VEHICLES; METAL-NONMETAL BATTERIES; THERMAL ANALYSIS; TEMPERATURE DEPENDENCE; TEMPERATURE CONTROL; TEMPERATURE DISTRIBUTION; LITHIUM SULFATES; TITANIUM SULFIDES; MATHEMATICAL MODELS; POLYETHYLENE GLYCOLS; BATTERY SEPARATORS; T CODES; COMPUTER PROGRAM DOCUMENTATION; EXPERIMENTAL DATA; 250902; 250904; 330300; PERFORMANCE AND TESTING; OTHER APPLICATIONS; ELECTRIC-POWERED SYSTEMS

Citation Formats

Pals, Carolyn R. Thermal modeling of the lithium/polymer battery. United States: N. p., 1994. Web. doi:10.2172/10107731.
Pals, Carolyn R. Thermal modeling of the lithium/polymer battery. United States. https://doi.org/10.2172/10107731
Pals, Carolyn R. 1994. "Thermal modeling of the lithium/polymer battery". United States. https://doi.org/10.2172/10107731. https://www.osti.gov/servlets/purl/10107731.
@article{osti_10107731,
title = {Thermal modeling of the lithium/polymer battery},
author = {Pals, Carolyn R.},
abstractNote = {Research in the area of advanced batteries for electric-vehicle applications has increased steadily since the 1990 zero-emission-vehicle mandate of the California Air Resources Board. Due to their design flexibility and potentially high energy and power densities, lithium/polymer batteries are an emerging technology for electric-vehicle applications. Thermal modeling of lithium/polymer batteries is particularly important because the transport properties of the system depend exponentially on temperature. Two models have been presented for assessment of the thermal behavior of lithium/polymer batteries. The one-cell model predicts the cell potential, the concentration profiles, and the heat-generation rate during discharge. The cell-stack model predicts temperature profiles and heat transfer limitations of the battery. Due to the variation of ionic conductivity and salt diffusion coefficient with temperature, the performance of the lithium/polymer battery is greatly affected by temperature. Because of this variation, it is important to optimize the cell operating temperature and design a thermal management system for the battery. Since the thermal conductivity of the polymer electrolyte is very low, heat is not easily conducted in the direction perpendicular to cell layers. Temperature profiles in the cells are not as significant as expected because heat-generation rates in warmer areas of the cell stack are lower than heat-generation rates in cooler areas of the stack. This nonuniform heat-generation rate flattens the temperature profile. Temperature profiles as calculated by this model are not as steep as those calculated by previous models that assume a uniform heat-generation rate.},
doi = {10.2172/10107731},
url = {https://www.osti.gov/biblio/10107731}, journal = {},
number = ,
volume = ,
place = {United States},
year = {Sat Oct 01 00:00:00 EDT 1994},
month = {Sat Oct 01 00:00:00 EDT 1994}
}

Thesis/Dissertation:
Other availability
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