Design Li-Po Battery Charger with Buck Converter under Partially CC-CV Method

H. Suryoatmojo*

*Corresponding author for this work

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

8 Citations (Scopus)

Abstract

A battery is a device that can store electricity. After being used as an energy source, the battery will decrease its energy capacity, so it can return to its maximum capacity again after the battery is recharged. The method commonly used to charge a Lithium Polymer (Li-Po) battery is a constant current constant voltage that is by giving a constant current first and continuing a constant voltage under certain conditions. To get the desired voltage, the Li-Po battery can be arranged in series connection. Arrangement of the batteries in series causes the time to charge each cell to be unequal because after use, each cell will have a different voltage. This paper proposes a Li-Po battery charger that can be used for charging each cell of the battery individually so that it does not cause overcharging of the battery cell. This Li-Po charger requires a buck converter with the constant current, constant voltage method (CC-CV). From implementation results, the proportional integrator (PI) controller in the buck converter can produce a constant current and a constant voltage at the resistive load, if the battery has a current ripple of 10% at constant current. The full battery charging test shows different times for each cell, for cell 1 for 84 minutes, cell 2 for 92 minutes and cell 3 for 76 minutes, with an average efficiency of 88.3% for converter 1, converter 2 for 89, 4% and converter 3 at 89.3%.

Original languageEnglish
Title of host publicationProceedings - 2020 International Seminar on Intelligent Technology and Its Application
Subtitle of host publicationHumanification of Reliable Intelligent Systems, ISITIA 2020
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages101-106
Number of pages6
ISBN (Electronic)9781728174136
DOIs
Publication statusPublished - Jul 2020
Event2020 International Seminar on Intelligent Technology and Its Application, ISITIA 2020 - Virtual, Online, Indonesia
Duration: 22 Jul 202023 Jul 2020

Publication series

NameProceedings - 2020 International Seminar on Intelligent Technology and Its Application: Humanification of Reliable Intelligent Systems, ISITIA 2020

Conference

Conference2020 International Seminar on Intelligent Technology and Its Application, ISITIA 2020
Country/TerritoryIndonesia
CityVirtual, Online
Period22/07/2023/07/20

Keywords

  • Li-Po battery charger
  • buck converter
  • constant current
  • constant voltage
  • master-slave control

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