Title :
Modeling the overcharge process of VRLA batteries
Author :
Gu, W.B. ; Wang, G.Q. ; Wang, C.Y.
Author_Institution :
Dept. of Mech. & Nucl. Eng., Pennsylvania State Univ., University Park, PA, USA
Abstract :
A multiphase, electrochemical and thermal coupled model is developed for valve-regulated lead-acid (VRLA) batteries. Physical phenomena that are involved in the VRLA battery overcharge process, such as gas generation, transport and recombination, electrolyte displacement and capillary flow and the venting event during discharge/rest/charge, are incorporated in the model. The effects of important parameters, including the electrolyte saturation level, interfacial mass transfer coefficient of oxygen, and electrode morphology factor, are extensively studied. An overview of the simulation capabilities of the present comprehensive model is provided
Keywords :
electrochemical electrodes; electrochemistry; electrolytes; lead acid batteries; mass transfer; thermal analysis; Pb; VRLA battery overcharge process modelling; capillary flow; electrode morphology; electrolyte displacement; electrolyte saturation level; gas generation; interfacial mass transfer coefficient; multiphase electrochemical-thermal coupled model; recombination; simulation capabilities; transport; venting event; Batteries; Electrodes; Engines; Hydrogen; Kinetic theory; Lead; Mathematical model; Nuclear power generation; Particle separators; Thermal engineering;
Conference_Titel :
Applications and Advances, 2001. The Sixteenth Annual Battery Conference on
Conference_Location :
Long Beach, CA
Print_ISBN :
0-7803-6545-3
DOI :
10.1109/BCAA.2001.905121
