Design of a smart battery system for laptop computer

  • Yu Shan Cheng*
  • , Jing Hsiau Chen
  • , Yi Feng Luo
  • , Chun Wei Ko
  • , Yi Hua Liu
  • *Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

The performance and lifespan of Li-ion batteries are closely related to the quality of their charger. To enhance the charger's performance, the Smart Battery System (SBS) Specification presents one element of a complete system solution for rechargeable batteries used in portable electronic equipment. The SBS features charging characteristics that are controlled by the battery itself, in contrast to a charger with fixed charging characteristics that will work with only one cell type. Therefore, the smart battery/smart battery charger combination provides distinct advantages in system safety, performance, and cost. In this chapter, a level 2 SBS is developed and implemented. The power stage is implemented using a level 2 SBC IC ISL88731 from Intersil Corp., and the host controller is realized by using the dsPIC microcontroller from Microchip Corp. The five-step constant-current charging pattern is implemented in the host controller. Comparing to conventional constant-current-constant- voltage (CC-CV) charging pattern, five-step constant-current charging algorithm has the advantages such as higher charging efficiency and shorter charging time.

Original languageEnglish
Title of host publicationIntelligent Technologies and Engineering Systems
Pages543-549
Number of pages7
DOIs
StatePublished - 2013
Externally publishedYes
Event2012 1st International Conference on Intelligent Technologies and Engineering Systems, ICITES 2012 - Changhua, Taiwan
Duration: 13 12 201215 12 2012

Publication series

NameLecture Notes in Electrical Engineering
Volume234 LNEE
ISSN (Print)1876-1100
ISSN (Electronic)1876-1119

Conference

Conference2012 1st International Conference on Intelligent Technologies and Engineering Systems, ICITES 2012
Country/TerritoryTaiwan
CityChanghua
Period13/12/1215/12/12

Keywords

  • Five-step constant-current charging algorithm
  • Level 2 smart battery charger
  • Smart battery
  • Smart battery charger

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