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Title: Improving Battery Design with Electro-Thermal Modeling

Operating temperature greatly affects the performance and life of batteries in electric and hybrid vehicles. Increased attention is necessary to battery thermal management. Electrochemical models and finite element analysis tools are available for predicting the thermal performance of batteries, but each has limitations. In this study we describe an electro-thermal finite element approach that predicts the thermal performance of a cell or module with realistic geometry. To illustrate the process, we simulated the thermal performance of two generations of Panasonic prismatic nickel-metal-hydride modules used in the Toyota Prius. The model showed why the new generation of Panasonic modules had better thermal performance. Thermal images from two battery modules under constant current discharge indicate that the model predicts the experimental trend reasonably well.
Authors:
; ; ;
Publication Date:
OSTI Identifier:
944483
DOE Contract Number:
AC36-99-GO10337
Resource Type:
Conference
Resource Relation:
Conference: Vehicle Power and Propulsion, 2005 IEEE Conference Proceedings, 7-9 September 2005, Chicago, Illinois; Related Information: For preprint version see NREL/CP-540-38621. (Title changed at publication.)
Publisher:
Piscataway, NJ: Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Research Org:
National Renewable Energy Laboratory (NREL), Golden, CO.
Sponsoring Org:
USDOE
Country of Publication:
United States
Language:
English
Subject:
25 ENERGY STORAGE; 33 ADVANCED PROPULSION SYSTEMS; DESIGN; GEOMETRY; MANAGEMENT; PERFORMANCE; PROPULSION; SIMULATION Transportation