A New Intense Pulse-charging Method for the Prolongation of Life in Lead-acid Batteries

抄録

Prolonging the life of lead-acid batteries which are used for vehicles is an important research project for the further development of motorization and because of the finite nature of resources. Based on the assumption that the deterioration of batteries is caused by sulphating at the anodes, a method of charging a large current in a short period of time in order to activate Pb-ions at anodes is possible. But if the electric charge of a large current is conducted simply by using direct current, it will cause a large amount of thermo genesis in batteries, and this will hasten the deterioration of the batteries. In order to prevent this, a pulse-charging method with a high duty cycle was considered. Batteries (28AH) for starting vehicles were used for this experiment, and the deterioration of the batteries was evaluated from the discharge time at approx. 0.3C charge and discharge time. An experiment was conducted by equalizing the average charge current between cases using direct current and cases using a pulse. As a result, pulse charging prolonged the possible discharge time of the batteries.