An experimental study of heat pipe thermal management system with wet cooling method for lithium ion batteries

An effective battery thermal management (BTM) system is required for lithium-ion batteries to ensure a desirable operating temperature range with minimal temperature gradient, and thus to guarantee their high efficiency, long lifetime and great safety. In this paper, a heat pipe and wet cooling comb...

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Bibliographic Details
Published in:Journal of power sources 2015, Vol.273, p.1089-1097
Main Authors: Zhao, Rui, Gu, Junjie, Liu, Jie
Format: Article
Language:English
Subjects:
Applied sciences
Battery
Convection cooling
Cooling effects
Cooling systems
Direct energy conversion and energy accumulation
Electric batteries
Electrical engineering. Electrical power engineering
Electrical power engineering
Electrochemical conversion: primary and secondary batteries, fuel cells
Exact sciences and technology
Heat pipes
Lithium-ion batteries
Operating temperature
Thermal management
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Summary:An effective battery thermal management (BTM) system is required for lithium-ion batteries to ensure a desirable operating temperature range with minimal temperature gradient, and thus to guarantee their high efficiency, long lifetime and great safety. In this paper, a heat pipe and wet cooling combined BTM system is developed to handle the thermal surge of lithium-ion batteries during high rate operations. The proposed BTM system relies on ultra-thin heat pipes which can efficiently transfer the heat from the battery sides to the cooling ends where the water evaporation process can rapidly dissipate the heat. Two sized battery packs, 3 Ah and 8 Ah, with different lengths of cooling ends are used and tested through a series high-intensity discharges in this study to examine the cooling effects of the combined BTM system, and its performance is compared with other four types of heat pipe involved BTM systems and natural convection cooling method. A combination of natural convection, fan cooling and wet cooling methods is also introduced to the heat pipe BTM system, which is able to control the temperature of battery pack in an appropriate temperature range with the minimum cost of energy and water spray.
ISSN:0378-7753
1873-2755
DOI:10.1016/j.jpowsour.2014.10.007