Adaptive active piezoelectric energy acquisition device
A piezoelectric energy and harvesting device technology, applied in piezoelectric effect/electrostrictive or magnetostrictive motors, electrical components, generators/motors, etc., and can solve problems such as low energy harvesting power
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[0069] The present invention will be described in further detail below in conjunction with the accompanying drawings.
[0070] Such as figure 1 The shown adaptive active piezoelectric energy harvesting device is composed of a main circuit and its control unit. Similar to the prior art, the main circuit of the present invention includes a piezoelectric device for converting the vibration energy of the external excitation force into electrical energy. Components, the piezoelectric element is connected to a full-bridge rectifier unit composed of diodes through the output of the inductor L1, the DC side of the full-bridge rectifier unit is connected to an energy storage unit through a DC / DC unit output, the full-bridge rectifier unit and the DC / DC unit There is also a charging capacitor C1 between them.
[0071] The main inventive point of the present invention is that a switch tube Q1-Q4 is connected in parallel on each diode of the full-bridge rectifier unit, and the DC / DC uni...
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