Title :
Advanced lithium ion battery charger
Author :
Teofilo, V.L. ; Merritt, L.V. ; Hollandsworth, R.P.
Author_Institution :
Lockheed Missiles & Space Co. Inc., Sunnyvale, CA, USA
fDate :
11/1/1997 12:00:00 AM
Abstract :
A lithium ion battery charger has been developed for four and eight cell batteries or multiples thereof. This charger has the advantage over those using commercial lithium ion charging chips in that the individual cells are allowed to be taper charged at their upper charging voltage rather than be cutoff when all cells of the string have reached the upper charging voltage limit. Since 30-60% of the capacity of lithium ion cells may be restored during the taper charge, this charger has a distinct benefit of fully charging lithium ion batteries by restoring all of the available capacity to all of its cells
Keywords :
battery chargers; lithium; secondary cells; 30 V; C; C anode; Li ion battery charger; LiMnO; cell shunting circuit; charge control; resistive equalisation; solid electrolyte; taper charge; transformer equalisation; Anodes; Batteries; Cathodes; Circuits; Cobalt; Lithium; Missiles; Space charge; Switches; Voltage control;
Journal_Title :
Aerospace and Electronic Systems Magazine, IEEE
