DocumentCode
437124
Title
Bi-directional power system for laptop computers
Author
Cleveland, Terry L.
Volume
1
fYear
2005
fDate
6-10 March 2005
Firstpage
199
Abstract
Today the typical laptop computer uses three to five Li-ion battery cells in series for efficient energy storage. For a typical four-cell system, the Li-ion stacked cell voltage ranges from 10.8 V to 16.8 V. This high voltage poses a problem when attempting to step down to the necessary low voltages internal to the laptop. A new "intelligent" power management system is proposed that will enable the ac-dc converter to provide a regulated lower output voltage while still using three or more series Li-ion cells as the main backup power source
Keywords
AC-DC power convertors; computer power supplies; energy management systems; energy storage; laptop computers; lithium compounds; secondary cells; 10.8 to 16.8 V; Li-ion battery cell; ac-dc converter; backup power source; bidirectional power system; energy storage; intelligent power management system; laptop computer; AC-DC power converters; Batteries; Bidirectional control; Energy management; Energy storage; Intelligent systems; Low voltage; Portable computers; Power system management; Power systems;
fLanguage
English
Publisher
ieee
Conference_Titel
Applied Power Electronics Conference and Exposition, 2005. APEC 2005. Twentieth Annual IEEE
Conference_Location
Austin, TX
Print_ISBN
0-7803-8975-1
Type
conf
DOI
10.1109/APEC.2005.1452918
Filename
1452918
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