DocumentCode :
2616753
Title :
Thermal management of lithium-ion battery pack with liquid cooling
Author :
Saw, L.H. ; Tay, A.A.O. ; Zhang, L. Winston
Author_Institution :
Dept. of Mech. Eng., Nat. Univ. of Singapore, Singapore, Singapore
fYear :
2015
fDate :
15-19 March 2015
Firstpage :
298
Lastpage :
302
Abstract :
Electric Vehicles (EVs) are projected as the most sustainable solutions for future transportation. EVs have many advantages over conventional hydrocarbon internal combustion engines including energy efficiency, environmental friendliness, noiselessness and less dependence on fossil fuels. However, there are also many challenges which are mainly related to the battery pack, such as battery cost, driving range, reliability, safety, battery capacity, cycle life, and recharge time. The performance of EVs is greatly dependent on the battery pack. Temperatures of the cells in a battery pack need to be maintained within its optimum operating temperature range in order to achieve maximum performance, safety and reliability under various operating conditions. Poor thermal management will affect the charging and discharging power, cycle life, cell balancing, capacity and fast charging capability of the battery pack. Hence, a thermal management system is needed in order to enhance the performance and to extend the life cycle of the battery pack. In this study, the effects of temperature on the Li-ion battery are investigated. Heat generated by LiFePO4 pouch cell was characterized using an EV accelerating rate calorimeter. Computational fluid dynamic analyses were carried out to investigate the performance of a liquid cooling system for a battery pack. The numerical simulations showed promising results and the design of the battery pack thermal management system was sufficient to ensure that the cells operated within their temperature limits.
Keywords :
calorimeters; computational fluid dynamics; cooling; electric vehicles; iron compounds; lithium compounds; numerical analysis; phosphorus compounds; power engineering computing; secondary cells; thermal management (packaging); transportation; EV; EV accelerating rate calorimeter; LiFePO4; battery capacity; battery cost; cell balancing; charging and discharging power; computational fluid dynamic analyses; cycle life; driving range; electric vehicles; energy efficiency; environmental friendliness; fossil fuels; hydrocarbon internal combustion engines; liquid cooling system; lithium-ion battery pack; noiselessness; numerical simulation; operating conditions; operating temperature range; performance enhancement; pouch cell; recharge time; sustainable solutions; thermal management system; transportation; Batteries; Cooling; Resistance heating; Temperature distribution; Thermal management; Vehicles; Battery temperature; CFD analysis; battery pack; heat generation; thermal management;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Thermal Measurement, Modeling & Management Symposium (SEMI-THERM), 2015 31st
Conference_Location :
San Jose, CA
ISSN :
1065-2221
Type :
conf
DOI :
10.1109/SEMI-THERM.2015.7100176
Filename :
7100176
Link To Document :
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