• Series-connected substrate-integrated lead-carbon hybrid ultracapacitors with voltage-management circuit

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      https://www.ias.ac.in/article/fulltext/boms/038/01/0129-0133

    • Keywords

       

      Ultracapacitor; substrate-integrated lead-dioxide electrode; voltage-management cell-balancing circuit.

    • Abstract

       

      Cell voltage for a fully charged-substrate-integrated lead-carbon hybrid ultracapacitor is about 2.3 V. Therefore, for applications requiring higher DC voltage, several of these ultracapacitors need to be connected in series. However, voltage distribution across each series-connected ultracapacitor tends to be uneven due to tolerance in capacitance and parasitic parallel-resistance values. Accordingly, voltage-management circuit is required to protect constituent ultracapacitors from exceeding their rated voltage. In this study, the design and characterization of the substrate-integrated lead-carbon hybrid ultracapacitor with co-located terminals is discussed. Voltage-management circuit for the ultracapacitor is presented, and its effectiveness is validated experimentally.

    • Author Affiliations

       

      A Banerjee1 R Srinivasan2 A K Shukla1

      1. Solid State and Structural Chemistry Unit, Indian Institute of Science, Bangalore 560 012, India
      2. enArka Instruments, Bangalore 560 040, India
    • Dates

       
  • Bulletin of Materials Science | News

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      Posted on July 25, 2019

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