Change search
ReferencesLink to record
Permanent link

Direct link
Powering devices using ultra-capacitor batteries
KTH, School of Information and Communication Technology (ICT), Communication Systems, CoS, Network Systems Laboratory (NS Lab).
KTH, School of Information and Communication Technology (ICT), Communication Systems, CoS.ORCID iD: 0000-0002-9626-1496
2015 (English)In: PROCEEDINGS OF THE 2015 12TH IEEE AFRICON INTERNATIONAL CONFERENCE - GREEN INNOVATION FOR AFRICAN RENAISSANCE (AFRICON), IEEE conference proceedings, 2015Conference paper (Refereed)Text
Abstract [en]

We explore the use of ultra-capacitors as backup storage for solar powered electronic devices. We discuss two use cases: routers in off-grid broadband networks consuming a few Watt and wireless sensor network nodes using a few mW when operating and a few mu W in quiescent mode. We have been testing batteries with ultra-capacitor based cells, both EDLC and LIC, in the range from 40 to 3000F. We found them viable alternatives in some applications and started long term field tests to sort out some unclear aspects regarding maximum discharge levels. Besides the traditional function of a backup battery storage in low-power applications, the very low internal resistance of capacitors make them useful also in hybrid solutions to accommodate transient needs for high currents that traditional batteries cannot deliver. Due to the low resistance, charging/discharging can be very fast. We also show how a very simple design requiring only one LIC capacitor can power a WSN mote sending at 1 packet/minute for 6 weeks on a single charge.

Place, publisher, year, edition, pages
IEEE conference proceedings, 2015.
Series
, Africon, ISSN 2153-0025
Keyword [en]
Batteries, Internet of Things, Lithium Ion Capacitors, LIC, Low power systems, Ultra-capacitors, Wireless sensor networks, WSN
National Category
Electrical Engineering, Electronic Engineering, Information Engineering
Identifiers
URN: urn:nbn:se:kth:diva-183236DOI: 10.1109/AFRCON.2015.7331869ISI: 000369096500010ScopusID: 2-s2.0-84962616678ISBN: 978-1-4799-7498-6OAI: oai:DiVA.org:kth-183236DiVA: diva2:908805
Conference
12th IEEE International Conference on Green Innovation for Africon Renaissance (AFRICON), SEP 14-17, 2015, Addis Ababa, ETHIOPIA
Note

QC 20160303

Available from: 2016-03-03 Created: 2016-03-03 Last updated: 2016-09-05Bibliographically approved

Open Access in DiVA

No full text

Other links

Publisher's full textScopus

Search in DiVA

By author/editor
Olsson, RobertPehrson, Björn
By organisation
Network Systems Laboratory (NS Lab)Communication Systems, CoS
Electrical Engineering, Electronic Engineering, Information Engineering

Search outside of DiVA

GoogleGoogle Scholar
The number of downloads is the sum of all downloads of full texts. It may include eg previous versions that are now no longer available

Altmetric score

Total: 12 hits
ReferencesLink to record
Permanent link

Direct link