Design & Experimental Analysis of Heat Management Optimization & Vibration Isolation Battery Enclosure in Electric Vehicles
Keywords:
parameters, low-pressure, delta wingletsAbstract
The Li-ion battery operation life is strongly dependent on the operating temperature and the temperature variation that occurs within each individual cell. Liquid- cooling is very effective in removing substantial amounts of heat with relatively low flow rates. On the other hand, air- cooling is simpler, lighter, and easier to maintain. However, for achieving similar cooling performance, a much higher volumetric air flow rate is required due to its lower heat capacity. This paper describes the fundamental differences between air-cooling and liquid-cooling applications in terms of basic flow and heat transfer parameters for Li-ion battery packs in terms of QITD (inlet temperature difference). For air- cooling concepts with high QITD, one must focus on heat transfer devices with relatively high heat transfer coefficients (100–150 W/m2/K) at air flow rates of 300–400 m3/h, low flow induced noise, and low-pressure drops. This can be achieved by using tabulators, such as delta winglets. The results show that the design concepts based on delta winglets can achieve QITD of greater than 150 W/K.
References
Rao and S.Wang, A review of power battery thermal energy management, Renewable & Sustainable Energy Reviews 15 4554-4571
Z Wan, J D Eng, B Li, Y Xu, X Wang and Y Tang, 2015 thermal performance of a miniature loop heat pipe using water-copper nanofluid Applied Thermal Engineering 78 712-719
Zhao, R Zhang, S Liu and Gu J 2015 A review of thermal performance improving methods of lithium- ion battery electrode modification and TMS Journal of Power Sources 299 557-577
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