SERVICE LIFE LIMITATION OF CHEMICAL SOURCES OF VEHICLE CURRENT AND THEIR RESTORATION POSSIBILITIES
The PURPOSE of the paper is the analysis of the reasons for limiting the lifetime of lithium-ion batteries and identification of their operation conditions in order to ensure the possibility of their working capacity restoration. METHODS. The set problem is solved through the use of the method of experimental studies. RESULTS AND THEIR DISCUSSION. The main causes of lithium-polymer battery degradation have been identified on the basis of the analysis of electrochemical transformations on electrodes. The main outcome of the performed researches is identification of the reasons for service life limitation as well as the possibilities and mechanisms for the restoration of lithium-ion (Li-Ion) electric batteries discharged below the permissible level. In addition to this, a new pulsed charging method developed on the basis of experimental results and protected by the Russian patent for the invention has been proposed. Specific recommendations for extending the service life of the accumulator batteries have been given. CONCLUSIONS. The use of the invention allows to restore the Li-ion batteries discharged below the permissible level (and, therefore, to extend their actual service life) and achieve their full charging in one go during charging directly into the charger. This results in a pronounced economic efficiency and increased reliability of the whole complex, which includes a battery.