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

Jinrong Qian; Vega, Michael
November 2007
Portable Design;Nov2007, Vol. 13 Issue 11, p34
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.


Related Articles

  • Intelligent Li-Ion Charge-Management Systems Overcome Challenges in Powering Portable Devices. Chu, Brian // Portable Design;Nov2007, Vol. 13 Issue 11, p40 

    The article discusses the potential of Lithium-Ion (Li-Ion) charge management systems in powering portable electronic devices. The high cell voltage, high density, long shelf life and maintenance-free nature of Li-Ion batteries make them ideal for a variety of portable-electronic applications....

  • Modeling Automotive Buttery Diagnostics. Khare, Neeta; Govil, Rekha // Power Electronics Technology;Mar2008, Vol. 34 Issue 3, p36 

    The article focuses on modeling the automotive battery through the use of Neuro-fuzzy and statistical models. The new approach can be used to accurately model the state of charge (SoC) and state of health (SoH) of a lead-acid battery so that the parameters maybe displayed in real time in a...

  • Energy Storage: Asian Systems & Apps. Ishac, Mark // Electroindustry;Dec2012, Vol. 17 Issue 12, p20 

    The article offers an outlook on the Asian and global market for energy storage systems. Projection shows the growth of the global grid-scale energy storage systems market from 2012-2020. Data reported in "Energy Storage: Asian Systems & Apps" forecasts the growth of the global and Asian markets...

  • The Researching of a Power Supply Design Scheme for T/R Assemblies. Weichang Wang; Jincheng Zhao // Applied Mechanics & Materials;2014, Issue 556-562, p1802 

    This paper presents a distributed power supply scheme for T/R assemblies which are the key pate of the active phased radar. Based on the analysis of the characteristics and design difficulties of T/R assemblies, the power supply uses the energy storage capacitor to provide the high peak current...

  • The Specs That Matter [and the Specs That Don't]. Gladstone, Darren // PCWorld;Oct2008, Vol. 26 Issue 10, p116 

    The article offers some suggestions for a consumer who wants to buy a computer systems. Vendors love to highlight GHz numbers in advertisements, because those numbers go up constantly and are sure to look better than what one has on his current system. One should also determine whether...

  • NEW PRODUCTS.  // Wireless Design & Development;Aug2003, Vol. 11 Issue 8, p22 

    Presents information on various electronic products developed in the U.S., as of August 2003. Features of MegaSphere antenna developed by Centurion Wireless Technologies Inc.; Applications of A048A connector gage kit designed by Maury Microwave Corp.; Output power provided by FlatPAC-EN range...

  • New batteries charge into CES. McDonald // TWICE: This Week in Consumer Electronics;01/17/2000, Vol. 15 Issue 2, p37 

    Informs on a variety of new products introduced by battery suppliers during the 2000 Consumer Electronics Show. Includes Leap Energy's entry into the consumer battery business; Panasonic's `digital' batteries; Lenmar's battery kiosk; Sanyo Energy's rechargeable line; Electric Fuel's cellphone...

  • Latest power requirements pose tough design challenges. Morrison // Electronic Design;12/06/99, Vol. 47 Issue 25, p139 

    Discusses the key issues in power-supply design for electronic equipment such as notebook computers, wireless phones and other handheld equipment. Importance of extending the operating life of batteries; Increased significance of improving efficiency at lower supply voltage levels to satisfy...

  • Design and Simulation of UPQC with Super-Capacitor to Energy Storage and Improve Power Quality. Siahi, M.; Hoseynpoor, M.; Najafi, M.; Ebrahimi, R. // Australian Journal of Basic & Applied Sciences;2011, Vol. 5 Issue 3, p674 

    This paper proposes a new configuration of UPQC (Unified Power Quality Conditioner) that consists of the DC/DC converter and the super-capacitors for compensating the voltage interruption. The proposed UPQC can compensate the reactive power, harmonic current, voltage sag and swell, voltage...


Read the Article


Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics