Journal
JOURNAL OF CENTRAL SOUTH UNIVERSITY
Volume 22, Issue 10, Pages 3970-3976Publisher
JOURNAL OF CENTRAL SOUTH UNIV TECHNOLOGY
DOI: 10.1007/s11771-015-2941-8
Keywords
lithium-ion battery; thermal management; reciprocating air-flow; temperature difference; orthogonal optimization; simulation
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Funding
- National Natural Science Foundation of China [50803008]
- Natural Science Foundation of Hunan Province, China [14JJ4035, 2011RS4067]
- State Key Laboratory of Luminescent Materials and Devices (South China University of Technology), China [2013-sdllmd-08]
- China Postdoctoral Science Foundation, China [20100480946, 201104508]
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Single cell temperature difference of lithium-ion battery (LIB) module will significantly affect the safety and cycle life of the battery. The reciprocating air-flow module created by a periodic reversal of the air flow was investigated in an effort to mitigate the inherent temperature gradient problem of the conventional battery system with a unidirectional coolant flow with computational fluid dynamics (CFD). Orthogonal experiment and optimization design method based on computational fluid dynamics virtual experiments were developed. A set of optimized design factors for the cooling of reciprocating air flow of LIB thermal management was determined. The simulation experiments show that the reciprocating flow can achieve good heat dissipation, reduce the temperature difference, improve the temperature homogeneity and effectively lower the maximal temperature of the modular battery. The reciprocating flow improves the safety, long-term performance and life span of LIB.
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