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A Silicon-Organic Hybrid Voltage Equalizer for Supercapacitor Balancing
Linköping University, Sweden.
RISE - Research Institutes of Sweden, ICT, Acreo.
RISE - Research Institutes of Sweden, ICT.
RISE - Research Institutes of Sweden, ICT, Acreo.
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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. 114-122, article id 7817802Article 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
2017. Vol. 7, no 1, p. 114-122, article id 7817802
Keyword [en]
Hybrid electronics, organic electrochemical transistors, printed electronics, supercapacitor balancing, voltage equalizer, Conducting polymers, Conductive plastics, Equalizers, Silicon, Styrene, Transistors, Charging current, Electric energies, Electronic systems, Hybrid solution, Poly(styrene sulfonate), Poly-3, 4-ethylenedioxythiophene, Series-connected, Capacitance
National Category
Computer and Information Sciences
Identifiers
URN: urn:nbn:se:ri:diva-31012DOI: 10.1109/JETCAS.2016.2612724Scopus ID: 2-s2.0-85009877621OAI: oai:DiVA.org:ri-31012DiVA: diva2:1138091
Available from: 2017-09-04 Created: 2017-09-04 Last updated: 2018-01-13Bibliographically approved

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CiteExportLink to record
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  • apa
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