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

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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.

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Acknowledgements

Financial support from Department of Science & Technology, Government of India and Indian Institute of Science, Bangalore, under the Energy Storage Systems Initiative, is gratefully acknowledged. AB thanks Council of Scientific and Industrial Research, New Delhi, for a Senior Research Fellowship.

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Authors and Affiliations

  1. Solid State and Structural Chemistry Unit, Indian Institute of Science, Bangalore, 560 012, India

    A BANERJEE & A K SHUKLA

  2. enArka Instruments, Bangalore, 560 040, India

    R SRINIVASAN

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  1. A BANERJEE
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BANERJEE, A., SRINIVASAN, R. & SHUKLA, A.K. Series-connected substrate-integrated lead-carbon hybrid ultracapacitors with voltage-management circuit. Bull Mater Sci 38, 129–133 (2015). https://doi.org/10.1007/s12034-014-0817-4

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  • DOI: https://doi.org/10.1007/s12034-014-0817-4

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