Title :
Methods of energy conservation and management for commercial Li-ion battery packs of mobile phones
Author :
Takeno, Kazuhiko ; Ichimura, Masahiro ; Takano, Kazuo ; Yamaki, Junichi
Author_Institution :
NTT DoCoMo, Japan
Abstract :
We have described the power system and the battery management for mobile phones used by NTT DoCoMo subscribers. We focus on the energy requirements of the phones´ AC-adaptors, their power-management systems, and trend in energy consumption. Safety tests of new Li-ion batteries, quick tests assessing capacity deterioration, and lifetime predictions are also presented.
Keywords :
battery management systems; lithium; mobile handsets; secondary cells; telecommunication power supplies; AC-adaptors; Li; Li-ion battery packs; NTT DoCoMo subscribers; battery management; energy consumption; mobile phones; power-management systems; Battery management systems; Circuits; Energy conservation; Energy consumption; Energy management; Industrial power systems; Life testing; Mobile handsets; Power system management; Safety;
Conference_Titel :
Telecommunications Energy Conference, 2003. INTELEC '03. The 25th International
Conference_Location :
Yokohama, Japan
Print_ISBN :
4-88552-196-3
