International Scientific Journals
of Scientific Technical Union of Mechanical Engineering "Industry 4.0"

In modern industry self-powered devices are an important component. For such devices, the most important component is the energy storage device used, most often based on lithium-ion technology. The article presents an equivalent circuits of lithium-ion batteries and a mathematical description of charge-discharge processes. Investigated in Matlab / SimPowerSystems built-in library component of lithium-ion battery. Mathematical models of equivalent circuits of different types of lithium-ionic batteries have been analyzed.

Renewable energy has been demanding in recent years and work on it has increased, but it does not have the potential to meet the required energy level. Energy can only meet high demand when it is used more efficiently and when correct conversions are made. The correct and economical use of energy can only be achieved by storing energy. There are many problems such as the situations where the resources are present and insufficient, the unbalance of the production consumption and the supply demand balance are prevented by storing energy. There are many ways of storing energy. When we examine these under 4 headings; electrical energy storage, mechanical energy storage, thermal energy storage and chemical energy storage.