A model for battery lifetime analysis for organizing applications on a pocket computer

Daler Rakhmatov, Sarma Vrudhula, Deborah A. Wallach

Research output: Contribution to journalArticle

147 Scopus citations

Abstract

A battery-powered portable electronic system shuts down once the battery is discharged; therefore, it is important to take the battery behavior into account. A system designer needs an adequate high-level battery model to make battery-aware decisions targeting the maximization of the system's online lifetime. We propose such a model that allows a designer to analytically predict the battery time-to-failure for a given load. Our model also allows for a tradeoff between the accuracy and the amount of computation performed. The quality of the proposed model is evaluated using typical pocket computer applications and a detailed low-level simulation of a lithium-ion electrochemical cell. In addition, we verify the proposed model against actual measurements taken on a real lithium-ion battery.

Original languageEnglish (US)
Pages (from-to)1019-1030
Number of pages12
JournalIEEE Transactions on Very Large Scale Integration (VLSI) Systems
Volume11
Issue number6
DOIs
StatePublished - Dec 1 2003

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Keywords

  • Analysis
  • Batteries
  • Low-power design
  • Performance-tradeoffs
  • System-level

ASJC Scopus subject areas

  • Software
  • Hardware and Architecture
  • Electrical and Electronic Engineering

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