Power generating element

Power generating element

  • CN 105,518,987 A
  • Filed: 05/15/2014
  • Published: 04/20/2016
  • Est. Priority Date: 09/04/2013
  • Status: Active Grant
First Claim
Patent Images

1. a generating element, vibrational energy is converted to electric energy to generate electric power by described generating element,Described generating element comprises:

  • Flexible plate-like bridge portion (20), axle (Y) extends along the longitudinal;

    Weight body (30), is connected to the one end in described tabular bridge portion;

    Crust of the device (40), holds described tabular bridge portion and described weight body;

    Fixed part (10), is fixed to described crust of the device by the other end in described tabular bridge portion;

    Lower electrode (E0), is layered on the surface in described tabular bridge portion;

    Piezoelectric element (50), is layered on the surface of described lower electrode;

    Upper electrode group (E11, E13, E21, E23;

    E31, E33), be made up of multiple upper electrode, described upper electrode is formed partially on the surface of described piezoelectric element;

    AndElectricity-generating circuit (60), carries out rectification, to extract electric power to the electric current produced based on the electric charge generated on described upper electrode and described lower electrode;

    Wherein,When described weight body (30) is formed at the external force that applying makes described crust of the device (40) vibrate, due to the flexure of described tabular bridge portion (20) in described crust of the device (40) internal vibration,By being applied to stress flexible on layer direction, described piezoelectric element (50) is easy to polarize in a thickness direction,Described upper electrode group (E11, E13, E21, E23;

    E31, E33) be provided with by right electrodes (E11, E21;

    And left electrodes (E13, E23 E31);

    The upper electrode of two types E33) formed, and each upper electrode be set to along the longitudinal axle (Y) extend and relative with the presumptive area of described lower electrode (E0), the presumptive area of described upper electrode and described lower electrode (E0) is facing with each other in the mode that described piezoelectric element (50) is therebetweenWhen described tabular bridge portion (20) limits center line (Y) of axle (Y) along the longitudinal, described right electrodes (E11, E21;

    E31) be arranged on the side of described center line (Y), and described left electrodes (E13, E23;

    E33) be arranged on the opposite side of described center line (Y).

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