PIEZOELECTRIC GENERATOR Russian patent published in 2005 - IPC

FIELD: electric generators; mechanical-to-electrical energy conversion.

SUBSTANCE: proposed piezoelectric generator has first bimorph piezoceramic ring with electrodes on main surfaces, as well as rollers and second bimorph piezoceramic ring with electrodes on main pins which is installed inside first bimorph piezoceramic ring coaxially with the latter. Rollers are disposed between these rings. Ring ends carry separators provided with slits accommodating springs. Rollers are held tight against one of rings or against both rings by means of these springs through rods disposed on roller pins. Internal or external ring is free to rotate. Rollers are made of piezoelectric material and have electrodes. One roller electrode is disposed on side surface, and conducting rod disposed on axis of roller revolution functions as second electrode. Electrodes may be mounted on side surface of roller along and perpendicular to axis of revolution and interconnected through switching circuit, or else they may be installed on roller ends perpendicular to its axis of revolution.

EFFECT: enhanced specific power.

5 cl, 1 dwg