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A hybrid thermal management system for lithium ion batteries combining phase change materials with forced-air cooling
被引:526
|作者:
Ling, Ziye
[1
]
Wang, Fangxian
[1
]
Fang, Xiaoming
[1
]
Gao, Xuenong
[1
]
Zhang, Zhengguo
[1
]
机构:
[1] S China Univ Technol, Sch Chem & Chem Engn, Minist Educ, Key Lab Enhanced Heat Transfer & Energy Conservat, Guangzhou 510640, Guangdong, Peoples R China
来源:
关键词:
Phase change material;
Forced air convection;
Thermal management;
Li-ion battery;
Passive cooling;
Hybrid system;
ELECTRIC VEHICLES;
TEMPERATURE DISTRIBUTION;
ENERGY MANAGEMENT;
CAPACITY FADE;
POWER BATTERY;
HEAT-TRANSFER;
CELLS;
PACKS;
PERFORMANCE;
SIMULATION;
D O I:
10.1016/j.apenergy.2015.03.080
中图分类号:
TE [石油、天然气工业];
TK [能源与动力工程];
学科分类号:
0807 ;
0820 ;
摘要:
Passive thermal management systems using phase change materials (PCMs) provides an effective solution to the overheating of lithium ion batteries. But this study shows heat accumulation in PCMs caused by the inefficient cooling of air natural convection leads to thermal management system failures: The temperature in a battery pack operating continuously outranges the safety limit of 60 degrees C after two cycles with discharge rate of 1.5 C and 2 C. Here a hybrid system that integrates PCMs with forced air convection is presented. This combined system successfully prevents heat accumulation and maintains the maximum temperature under 50 degrees C in all cycles. Study on airspeed effects reveals that thermo-physical properties of PCMs dictate the maximum temperature rise and temperature uniformity in the battery pack, while forced air convection plays a critical role in recovering thermal energy storage capacity of PCMs. A numerical study is also carried out and validated with experiment data, which gives theoretic insights on thermo-physical changes in this hybrid battery thermal management system. (C) 2015 Elsevier Ltd. All rights reserved.
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页码:403 / 409
页数:7
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