Journal
JOURNAL OF POWER SOURCES
Volume 270, Issue -, Pages 273-280Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.jpowsour.2014.07.120
Keywords
Heat generation model; Thermal management design; Flow rate estimates; Lithium-ion battery; Lumped thermal model
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Thermal management has been one of the major issues in developing a lithium-ion (Li-ion) hybrid electric vehicle (HEV) battery system since the Li-ion battery is vulnerable to excessive heat load under abnormal or severe operational conditions. In this work, in order to design a suitable thermal management system, a simple modeling methodology describing thermal behavior of an air-cooled Li-ion battery system was proposed from vehicle components designer's point of view. A proposed mathematical model was constructed based on the battery's electrical and mechanical properties. Also, validation test results for the Li-ion battery system were presented. A pulse current duty and an adjusted US06 current cycle for a two-mode HEV system were used to validate the accuracy of the model prediction. Results showed that the present model can give good estimations for simulating convective heat transfer cooling during battery operation. The developed thermal model is useful in structuring the flow system and determining the appropriate cooling capacity for a specified design prerequisite of the battery system. (C) 2014 Elsevier B.V. All rights reserved.
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