A CURRENT LIMIT CIRCUIT FOR A SUPERCAPACITIVE DEVICE

摘要

System (2) includes a supercapacitive device (8) that is electrically connected across a starter (motor7) for supplying current to that motor during a starting sequence of engine (3). Device (8) includes a single sealed housing (9) that contains a plurality six substantially identical individual supercapacitive cells (10) which are connected in series to provide a total capacitance of 150 Farads and an equivalent series resistance(ESR) of 5 mOhms. Also contained within housing (9) is an active balance circuit (11) for maintaining substantially the same voltage across each of cells (10) to protect against overvoltage across the cells (10). In other embodiments circuit (11) is a passive balance circuit.