Bending transducer for generating electrical energy from mechanical deformations

A circuit module, comprising:

• a housing;
• a piezoelectric generator accommodated in the housing, the piezoelectric generator having a mass element configured to be movable inside the housing and a bending transducer, wherein the mass element and the bending transducer form a vibration-capable system, and wherein the piezoelectric element is elastically deformable with the vibration of the vibration-capable system;
• and
• a power supply circuit for receiving a piezoelectric voltage output by the piezoelectric element during a mechanical deformation of the piezoelectric element and for supplying power to the circuit module;
• wherein the bending transducer includes:
• a deformable support device, wherein a first connecting electrode and a second connecting electrode are formed on the deformable support device;
• and
• a piezoelectric element attached to the support device and having at least one first electrode and one second electrode;
• and wherein the following conditions are satisfied:
• the first connecting electrode is contacted with the first electrode of the piezoelectric element, and the second connecting electrode is contacted with the second electrode of the piezoelectric element;
• at least one of the first connecting electrode and the second connecting electrode is applied as areas of at least one structured conductive layer on the support device;
• at least one of the first electrode and the second electrode is integrally and mechanically attached on and contacted with at least one of the first connecting electrode and the second connecting electrode with the aid of one of a conductive adhesive or a conductive solder;
• at least a portion of each one of the first and second connecting electrodes is formed beneath the piezoelectric element and extends laterally outward;
• the first electrode is integrally and mechanically attached on and contacted with the first connecting electrode with the aid of a first conductive connecting middle area;
• the second electrode is integrally and mechanically attached on and contacted with the second connecting electrode with the aid of a second conductive connecting middle area;
• and
• the piezoelectric element has at least one first segment and one second segment having differently oriented polarizations, the first electrode being formed on the first segment, the second electrode being formed on the second segment, and the first segment and the second segment being electrically connected in series.