Ultra Capacitor Storages for Automotive Applications
Jörg Folchert, Dietrich Naunin, Dimitri Tseronis, Berlin University of Technology

A research group at the Berlin University of Technology is engaged with the applications of Ultra Capacitors in automotive systems. Today Ultra Capacitors have the disadvantage of a too small operation area regarding the voltages and very low voltage levels of a single module. This leads to series connections of Ultra Capacitors which needs a high dynamic energy management to guarantee the lifetime.

A management system for a 42 V power net storage block is under development which includes a protection strategy for the Ultra Capacitors. The concept includes the handling of Peak Power Assistance (400 A at voltages levels from 40 V to 56 V) in combination with a DC/DC converter based (for a better utilization of the stored energy) delivery of medium power (100 A at steady 42 V). Regarding to easy-to-handle requirements the block has only a CAN bus interface and the power connector.

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contact ,Dipl.-Ing. Jörg Folchert

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