An adaptive pulse charging algorithm for lithium batteries

In this paper, a pulse charge system for lithium based batteries, which adaptively picks the correct charging pulse, is proposed to improve the charging performance in terms of speed and charge efficiency. An experimental setup is designed, implemented and tested on Lithium ion (Li-ion) and Lithium ion Polymer (Li-Po) batteries separately. Both batteries reached up to 3.9 V within 40 minutes and both batteries were able to charged approximately 17 % faster than the conventional Constant Current-Constant Voltage (CC-CV) charger. The proposed system gave 6 % and 5 % of leading charge efficiencies than CC-CV strategy, for Li-ion and Li-Po batteries respectively. Li-Po battery gave slightly leading charging performance by 3 % in terms of charging speed and 2 % in terms of charge efficiency compared to Li-ion battery.