US Patent 7422666 Photovoltaically powered cathodic protection system for automotive vehicle

A photovoltaically powered cathodic protection system for an automotive vehicle uses electrical energy arising from a photovoltaic array positioned upon an exterior surface of the vehicle, with the cathodic protection current being controlled by a controller which is also connected with an electrical storage device and with at least one electrogalvanic cell sensor. The controller and associated sensors function to assure that sufficient charge passes through conductors applied to the body of the vehicle to maintain cathodic protection on a consistent basis.