Additional cell for power supply system of motor vehicle, has electric energy storage unit and voltage converter that are connected in parallel, where cell is connected in series with electric energy storage device

摘要

The cell (18) has an electric energy storage unit i.e. ultra-capacitor (19), and a step-up/step-down type voltage converter i.e. direct current/direct current (DC/DC) converter (20), that are connected in parallel, where the cell is connected in series with an electric energy storage device e.g. battery (12) such as 12 volt battery. The cell is connected in series with elementary cells. An independent claim is also included for a power supply system supplying power to an electrical network.