TITLE

How to Meet Host-Side Fuel Gauge System Design Challenges for Portable Devices

AUTHOR(S)
Jinrong Qian; Vega, Michael
PUB. DATE
November 2007
SOURCE
Portable Design;Nov2007, Vol. 13 Issue 11, p34
SOURCE TYPE
Periodical
DOC. TYPE
Article
ABSTRACT
The article explains how to improve fuel gauge accuracy and host-side battery management for portable electronic devices. Many portable devices relied on voltage measurement alone to approximate the remaining battery capacity. The host-side fuel gauge can reduce the end user's total cost for buying a replacement battery pack when the original battery life has expired. However, there are several host-side gauging system design challenges. One is to get the battery initial capacity when a battery is inserted. Therefore, the open circuit voltage (OCV) should be measured before charging or discharging starts. Another design challenge is how to monitor the battery temperature for charging qualification and adjusting the battery capacity.
ACCESSION #
27945563

 

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