A device (100) harvests energy from vibration and/or strain and utilizes both capacitive (102a, 102b) and piezoelectric elements (105). The principle of operation is out-of-plane capacitive harvester, where the bias voltage for the capacitive element is generated with a piezoelectric element (105). The device utilizes a thin dielectric film (104) between the capacitor plates (102a, 102b) maximizing the harvested energy and enabling the harvester operation in semi-contact mode so that short circuits are prevented. For example when utilized in a wheel or the like, the capacitor is closed and opened at every strike or every turn of a wheel being thus independent of the harvester's mechanical resonance frequency.


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    Title :

    METHOD AND DEVICE FOR ENERGY HARVESTING


    Additional title:

    VERFAHREN UND VORRICHTUNG ZUR STROMGEWINNUNG
    PROCÉDÉ ET SYSTÈME DE RÉCUPÉRATION D'ÉNERGIE


    Contributors:

    Publication date :

    2016-08-10


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

    IPC:    B60C VEHICLE TYRES , Fahrzeugreifen / H01L Halbleiterbauelemente , SEMICONDUCTOR DEVICES / H02N Elektrische Maschinen, soweit nicht anderweitig vorgesehen , ELECTRIC MACHINES NOT OTHERWISE PROVIDED FOR




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