PIEZOELECTRIC BACKUP POWER SUPPLY (VERSIONS) Russian patent published in 2020 - IPC H02N2/18 H02J9/06 

FIELD: electrical engineering.

SUBSTANCE: invention relates to electrical engineering, to electromechanical energy converters. Piezoelectric backup power supply comprises a piezoelectric transducer made in the form of a flat sectioned converter, the sections of which are electrically connected to each other. Each section consists of one or more piezoelectric elements glued to each other and electrically connected to each other. Elastic cantilever beam is fixed on base post. Inertial load is fixed on the cantilever beam. On external end of elastic cantilever beam there is a forcing element in the form of two elastic plate springs, and on the base outside the beam there is a cone-shaped stop limiting movement of the forcing element of elastic beam in axial direction. Besides, in the power supply according to the second version, in addition on the lower surface of the base there is a U-shaped plate spring fixed by the upper part on the base. At the same time the rotating support with the fixed U-shaped leaf spring is movably fixed on the round board rigidly fixed on the object, and also on the base fixed the air pressure receiver with the additional load and the feathering element forming effective forced oscillations and rotation relative to the object.

EFFECT: technical result consists in creation of conditions of intense loading of piezoelectric elements due to application of forcing element.

4 cl, 6 dwg