UDC 533.035
SIMULATION OF CHANGES IN ELECTRICAL CHARACTERISTICS OF LEAD-ACID BATTERY
S. S. Volkov, Dr. Sc. (Phys. and Math.), professor, professor of the Department of automotive engineering, Ryazan guards higher airborne command school, Ryazan, Russia;
orcid.org/0000-0002-4870-9356, e-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.
M. E. Ilyin, Ph.D. (Phys. and Math.), associate professor, associate professor of the Department of higher mathematics, Ryazan state radio engineering university, Ryazan, Russia;
orcid.org/0000-0002-8161-1318, e-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.
V. D. Rogachev, Ph.D. (Tech.), associate professor, lecturer, Department of automotive engineering, Ryazan guards higher airborne command school, Ryazan, Russia;
orcid.org/0000-0002-4927-2387, e-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.
A. V. Nabatchikov, adjunct of the Department of automotive engineering, Ryazan guards higher airborne command school, Ryazan, Russia;
orcid.org/0000-0003-1524-4860, e-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.
The paper is devoted to theoretical modeling of physical and chemical processes in accumulators. The aim of the work was to study physical and chemical causes and regularities of self-discharge of lead-acid battery, build a mathematical model and an algorithm for creating self-discharge compensation devices. The analysis of processes that change electrical characteristics of lead-acid batteries is carried out. The process of diffusion of antimony atoms from the rods of current-carrying grids of electrode plates and antimony scattering over battery volume, in particular, segregation of antimony on the surface of active mass of negative electrode in the form of a two-dimensional film and positive electrode in the form of three-dimensional for mations, is considered. On the basis of known laws, an analytical model for changing the EMF of lead battery has been developed. Comparison of analytical models of antimony transition processes from grids on the surface of active electrode masses showed satisfactory correlation by time changes between them.
Key words: battery, lead, charge capacity, self-discharge, diffusion, simulation, migration, grids, antimony, active mass.