Patent ID: 8922098
Filing Date: 2014-12-30
Classification: B60C,H01L,H02N,Y10T

Abstract:
1. A device for energy harvesting from vibration, strain, turn and/or strike, comprising: a capacitor harvesting module comprising two capacitor plates arranged essentially parallel with each other so that at least one of the plates is adapted to move due to vibration, strain, turns and/or strike in an essentially perpendicular direction to the other capacitor plate and thereby forming a variable gap between the plates and changing the capacitance between the plates and to generate electrical power to a power output; a thin dielectric film arranged between the capacitor plates; and a piezoelectric element adapted to generate a bias voltage to the capacitor harvesting module from vibration and/or strain, wherein at least one of the capacitor plates is related to a spring element so that the spring element enables said plate to oscillate back and forth in relation to said other capacitor plate, a spring constant of which is advantageously selected so that the gap is minimized and maximized during the vibrations, strains, turns and/or strikes of the device.