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Force-electricity energy converter and array thereof

The invention discloses a force-electricity energy converter and an array thereof. The energy converter works in a bending-pressing mode and converts vibration of an environment or energy generated when a human body walks into electric energy by using a piezoelectricity principle. The energy converter of the invention comprises a pair of piezoelectric units and a pair of bow-shaped elastic elements, wherein the piezoelectric units and the elastic elements are fixed by pre-loading devices; and the elastic elements convert a transverse force (or outside vibration) applied by the outside to an elastic strip into longitudinal (axial) pressure which is applied to the piezoelectric units and is amplified in the bending-pressing mode and then the piezoelectric units efficiently generate electricity through the piezoelectric effect. The invention further relates to the array of the force-electricity energy converter. The array is used for converting mechanical energy which is generated when the human body (including other moving vehicles) operates on a plate into the electric energy and outputting the electric energy. The force-electricity energy converter and the array thereof have the advantages of simple structure, low resonant frequency and low manufacturing cost and can guarantee to work for a long term under the high-pressure working condition.
Owner:PEKING UNIV

Photovoltaic system and tracking mechanism thereof

The invention discloses a photovoltaic system and a tracking mechanism thereof. The tracking mechanism comprises a stand column, a transmission mechanism and a driver, wherein the driver is fixed on the stand column and is connected with the transmission mechanism; the transmission mechanism comprises a main beam connecting rod, a first supporting rod, a drive connecting rod and a second supporting rod which are sequentially hinged to form a four-rod linkage mechanism; a mounting part used for fixedly mounting a main beam is arranged on the main beam connecting rod; hinge points of the main beam connecting rod and the first and second supporting rods are positioned on both sides of the mounting part separately; and the drive connecting rod is connected with an output end of the driver. The photovoltaic system and the tracking mechanism thereof omit a plastic bearing between the main beam and the stand column, thereby avoiding the influence of short service life and unstable structure of the plastic bearing on the whole set of tracking mechanism; and the photovoltaic system and the tracking mechanism thereof enable a rotating center of the four-rod linkage mechanism to coincide with gravity centers of the main beam and a photovoltaic assembly, thereby avoiding extra torque generated to the main beam by gravity of the main beam and the photovoltaic assembly when the main beam and the photovoltaic assembly rotate.
Owner:ARCTECH SOLAR HLDG CO LTD

Force-electricity energy converter and array thereof

The invention discloses a force-electricity energy converter and an array thereof. The energy converter works in a bending-pressing mode and converts vibration of an environment or energy generated when a human body walks into electric energy by using a piezoelectricity principle. The energy converter of the invention comprises a pair of piezoelectric units and a pair of bow-shaped elastic elements, wherein the piezoelectric units and the elastic elements are fixed by pre-loading devices; and the elastic elements convert a transverse force (or outside vibration) applied by the outside to an elastic strip into longitudinal (axial) pressure which is applied to the piezoelectric units and is amplified in the bending-pressing mode and then the piezoelectric units efficiently generate electricity through the piezoelectric effect. The invention further relates to the array of the force-electricity energy converter. The array is used for converting mechanical energy which is generated when the human body (including other moving vehicles) operates on a plate into the electric energy and outputting the electric energy. The force-electricity energy converter and the array thereof have the advantages of simple structure, low resonant frequency and low manufacturing cost and can guarantee to work for a long term under the high-pressure working condition.
Owner:PEKING UNIV
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