A plate folding and unfolding device and a solar panel structure are provided. The plate folding and unfolding device includes a cam fixed with first plate piece, and a rotating shaft is disposed inside the cam in an axial direction of the cam; a connecting rod, where the connecting rod includes a first end and a second end that are opposite to each other, the first end is connected vertically to the rotating shaft, and the second end is fixed to a second plate piece; a positioning shaft, where the positioning shaft is disposed, on the connecting rod; and an elastic piece, where the elastic piece is disposed on the connecting rod, one end of the elastic piece is connected to the positioning shaft, where a groove that accommodates the positioning shaft is disposed at at least one location of the outer peripheral surface of the cam.

According to the invention an energy conversion system, in particular a solar park, is proposed, which is configured to be arranged floating on a body of water, with at least three floating units (48a, 48b) and with at least one connection device (66), wherein the connection device (66) connects at least two floating units (48) in a rigid manner and/or at least two floating units (48a, 48b) in a movable manner.

According to the invention an energy conversion system, in particular a solar park, is proposed, which is configured to be arranged floating on a body of water, with at least three floating units (48a, 48b) and with at least one connection device (66), wherein the connection device (66) connects at least two floating units (48) in a rigid manner and/or at least two floating units (48a, 48b) in a movable manner.

A mobile generator includes a housing having a top portion, a first side portion, and a second side portion, wherein the first side portion includes an energy-receiving component. The mobile generator also includes an arm pivotally coupled to the housing at a first pivot point and to the first side portion at a second pivot point. A first motion controller is configured to drive rotation of the arm about the first pivot point, and a second motion controller configured to drive rotation of the first side portion about the second pivot point.

Systems and methods for applying flexible solar panels to flexible underlying membranes are disclosed. The embodiments disclosed herein involve systems and methods for applying flexible photovoltaic modules to flexible underlying membranes, including large and small span and permanent membrane structures.

Systems and methods for applying flexible solar panels to flexible underlying membranes are disclosed. The embodiments disclosed herein involve systems and methods for applying flexible photovoltaic modules to flexible underlying membranes, including large and small span and permanent membrane structures.

The invention relates to a system for displaying information, comprising: an emission device arranged to emit light so as to display information to a user, the emission device being adapted to emit the light in a pulsed manner so that the intensity of the light varies between a high value and a low value, a selective viewing device comprising a panel, the panel being adapted so that the user can view the light which is emitted by the emission device through that panel so as to visually perceive the information being displayed, the panel having a variable transparency which can be varied between a state of high transparency and a state of low transparency, the system being adapted to synchronize the emission device and the selective viewing device so that the states of the emission device emitting light at a high-intensity value and the states of the panel of the selective viewing device of high transparency overlap in time, the system further comprising a photoelectric conversion means arranged to convert ambient light into electric energy so as to feed the electric energy into the system.

The invention relates to a system for displaying information, comprising: an emission device arranged to emit light so as to display information to a user, the emission device being adapted to emit the light in a pulsed manner so that the intensity of the light varies between a high value and a low value, a selective viewing device comprising a panel, the panel being adapted so that the user can view the light which is emitted by the emission device through that panel so as to visually perceive the information being displayed, the panel having a variable transparency which can be varied between a state of high transparency and a state of low transparency, the system being adapted to synchronize the emission device and the selective viewing device so that the states of the emission device emitting light at a high-intensity value and the states of the panel of the selective viewing device of high transparency overlap in time, the system further comprising a photoelectric conversion means arranged to convert ambient light into electric energy so as to feed the electric energy into the system.

The present application discloses a power generation device so as to solve the generator set overspeed problem. The power generation device comprises: a stand column; and at least one generator set located on the stand column. The generator set comprises a support, blades connected to the support, and a power generator generating power by means of rotation of the blades, and an adjustment device located on the support and used for adjusting a windage area of the blades by moving or rotating the blade according to a wind speed. The wind power generation device may reduce an effective windage area to zero when the wind force is too high, thereby improving stability and applicability in a changeable environment and prolonging the service life of the apparatus.

A camping awning mountable to a vehicle at or above head-height comprises a core having a cylinder extending between a pair of spaced ends of the core, an awning sheet adapted to be returned onto the core in a storage state, the awning sheet also adapted to be paid out to present an upper surface of the awning sheet, in an extended state, and a flexible solar charging device attached to or forming part of the upper surface. The solar charging device is adapted to bend with the awning sheet as it is returned onto the core, such that the awning sheet including the solar charging device is adapted to be fully returned onto the core, and covers by area at least 20% of the upper surface when the awning sheet is fully paid out.