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A Silicon-Organic Hybrid Voltage Equalizer for Supercapacitor Balancing
Linköping University, Department of Electrical Engineering, Information Coding. Linköping University, Faculty of Science & Engineering.
Acreo Swedish ICT AB, Sweden.
Acreo Swedish ICT AB, Sweden.
Acreo Swedish ICT AB, Sweden.
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2017 (English)In: IEEE JOURNAL ON EMERGING AND SELECTED TOPICS IN CIRCUITS AND SYSTEMS, ISSN 2156-3357, Vol. 7, no 1, p. 114-122Article in journal (Refereed) Published
Abstract [en]

Cell voltage equalizers are an important part in electric energy storage systems comprising series-connected cells, for example, supercapacitors. Hybrid electronics with silicon chips and printed devices enables electronic systems with moderate performance and low cost. This paper presents a silicon-organic hybrid voltage equalizer to balance and protect series-connected supercapacitor cells during charging. Printed organic electrochemical transistors with conducting polymer poly(3,4-ethylenedioxythiophene): poly(styrene sulfonate) (PEDOT: PSS) are utilized to bypass excess current when the supercapacitor cells are fully charged to desired voltages. In this study, low-cost silicon microcontrollers (ATtiny85) are programmed to sense voltages across the supercapacitor cells and control the organic electrochemical transistors to bypass charging current when the voltages exceed 1 V. Experimental results show that the hybrid equalizer with the organic electrochemical transistors works in dual-mode, switched-transistor mode or constant-resistor mode, depending on the charging current applied (0.3-100 mA). With the voltage equalizer, capacitors are charged equally regardless of their capacitances. This work demonstrates a low-cost hybrid solution for supercapacitor balancing modules at large-scale packs.

Place, publisher, year, edition, pages
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC , 2017. Vol. 7, no 1, p. 114-122
Keywords [en]
Hybrid electronics; organic electrochemical transistors; printed electronics; supercapacitor balancing; voltage equalizer
National Category
Other Electrical Engineering, Electronic Engineering, Information Engineering
Identifiers
URN: urn:nbn:se:liu:diva-136632DOI: 10.1109/JETCAS.2016.2612724ISI: 000397101200011OAI: oai:DiVA.org:liu-136632DiVA, id: diva2:1089853
Note

Funding Agencies|Swedish Foundation for Strategic Research-"Batterifonden" programme of the Swedish Energy Agency

Available from: 2017-04-21 Created: 2017-04-21 Last updated: 2017-05-09

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Keshmiri, VahidForchheimer, RobertTu, Deyu
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CiteExportLink to record
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Citation style
  • apa
  • harvard1
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