Abstract
Lithium-ion (Li-ion) is the most commonly used battery chemistry in portable applications nowadays. Accurate State-of-Charge (SoC) and remaining run-time (tr) calculation for portable devices is important for the user convenience and to prolong the lifetime of batteries. A new SoC algorithm for Li-ion batteries that combines adaptivity with direct measurement and book-keeping systems has been developed and implemented in a real-time evaluation system. In this paper the error sources in the real-time SoC evaluation system with possible calibration solutions are described. The goal of the SoC system is to predict the remaining run-time of a Li-ion battery with an uncertainty of 1 minute or better under all realistic user conditions, including a wide variety of load currents and a wide temperature range.
Original language | English |
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Title of host publication | 18th IMEKO World Congress 2006 |
Subtitle of host publication | Metrology for a Sustainable Development |
Publisher | Curran Associates Inc. |
Pages | 876-881 |
Number of pages | 6 |
Volume | 2 |
ISBN (Print) | 9781622766468 |
Publication status | Published - 1 Dec 2006 |
Event | 18th IMEKO World Congress 2006: Metrology for a Sustainable Development - Rio de Janeiro, Brazil Duration: 17 Sept 2006 → 22 Sept 2006 Conference number: 18 |
Conference
Conference | 18th IMEKO World Congress 2006 |
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Country/Territory | Brazil |
City | Rio de Janeiro |
Period | 17/09/06 → 22/09/06 |
Keywords
- Error
- Li-ion batteries
- Portable energy
- State-of-Charge