Qualitative thermal characterization and cooling of lithium batteries for electric vehicles

31st UIT (Italian Union of Thermo-fluid-dynamics) Heat Transfer Conference 2013

Mariani, A.^1 ; D'Annibale, F.^1 ; Boccardi, G.^1 ; Celata, G.P.^2 ; Menale, C.^3 ; Bubbico, R.^3 ; Vellucci, F.^4

ENEA Laboratory of Thermal Fluid-Dynamics Applied to Energy Systems, Italy^1

ENEA, Technical Unit for Advanced Technologies for Energy and Industries, Italy^2

University of Roma la Sapienza, Italy^3

ENEA Laboratory of Low Environmental Impact Automotive, Italy^4

关键词: Cooling Capacity;    Electric charging;    Experimental facilities;    Experimental test;    Normal operations;    Temperature profiles;    Thermal behaviours;    Thermal characterization;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/501/1/012035/pdf
DOI  :  10.1088/1742-6596/501/1/012035

来源: IOP

【 摘 要 】

The paper deals with the cooling of batteries. The first step was the thermal characterization of a single cell of the module, which consists in the detection of the thermal field by means of thermographic tests during electric charging and discharging. The purpose was to identify possible critical hot points and to evaluate the cooling demand during the normal operation of an electric car. After that, a study on the optimal configuration to obtain the flattening of the temperature profile and to avoid hot points was executed. An experimental plant for cooling capacity evaluation of the batteries, using air as cooling fluid, was realized in our laboratory in ENEA Casaccia. The plant is designed to allow testing at different flow rate and temperatures of the cooling air, useful for the assessment of operative thermal limits in different working conditions. Another experimental facility was built to evaluate the thermal behaviour changes with water as cooling fluid. Experimental tests were carried out on the LiFePO4 batteries, under different electric working conditions using the two loops. In the future, different type of batteries will be tested and the influence of various parameters on the heat transfer will be assessed for possible optimal operative solutions.