36results about How to "Improve light receiving effect" patented technology

The invention provides a fruit and vegetable planting frame convenient to move, and relates to the technical field of fruit and vegetable planting frames. The fruit and vegetable planting frame convenient to move comprises a planting frame body, wherein a moving device is arranged in the planting frame body; sliding grooves are formed in a framework body of the planting frame body; second slidingblocks are respectively in sliding connection to each sliding groove; a fruit and vegetable placing disk is fixedly connected to each second sliding block; a limiting block is fixedly connected to oneside of each second sliding block; and a first gear is movably connected to the planting frame body. According to the fruit and vegetable planting frame convenient to move disclosed by the invention,through the united arrangement of the planting frame body, supporting columns, the moving device, a telescopic rod, first fixing rods, a sliding rod, a first sliding block, a first connecting rod, afixing wheel, a first supporting rod, a second fixing rod and moving wheels, the moving wheels of the device can achieve the effect of moving up and down; and when moving is needed, the fruit and vegetable planting frame convenient to move can be moved, and when moving is not needed, the fruit and vegetable planting frame convenient to move is fixed to prevent moving.

The invention discloses an intelligent solar distributed power station illumination energy-saving system comprising a plurality of portal frames arranged on a pavement. Cross-beam frames are erected on the tops between the adjacent portal frames; a plurality of pedestal support frames are arranged on the cross-beam frames; a plurality of bearing frames are arranged on the pedestal support frames; a plurality of condensation assemblies are arranged uniformly in the bearing frames and are connected with photoelectric conversion devices; the photoelectric conversion devices are connected with electric energy storage devices connected with light bands; and the light bands are arranged at the bottoms of the portal frames. Switch controllers are arranged between the light bands and the electric energy storage devices. According to the invention, with the condensation assemblies having high conversion efficiency, the equipment size is reduced; little setting geographic restriction exists; power transmission can be carried out conveniently; power losses are reduced; and the usage rate is improved.

The present invention discloses a Fresnel lens with a light receiving effect, including a converging surface and an incidence surface opposite to the converging surface. The incidence surface is provided with an optically effective refractive region and an optically reflective region annularly surrounding the optically effective refractive region. The optically reflective region is provided at least with a prism annularly disposed outside the optically effective refractive region. The prism is provided with a refraction surface which is in adjacent to the optically effective refractive region and a reflection surface which is disposed at a first angle relative to the refraction surface. In addition, a tail end of the prism is an inverted hook part. Therefore, the effective working area of the refraction surface and the reflection surface can be increased, thereby improving the light receiving effect of the Fresnel lens.

The invention belongs to an illuminance detection device for photoelectric components and in particular discloses an intermittent illuminance detection device. The intermittent illuminance detection device comprises a pedestal, wherein a photoelectric component opening / closing device for placing a photoelectric component is arranged at the bottom of the pedestal; and a driver for driving the photoelectric component opening / closing device to rotate and driving the photoelectric component opening / closing device to extend out of the bottom surface of the pedestal is arranged on the pedestal. Theintermittent illuminance detection device has the advantages that: when the photoelectric component is detected, the illuminated surface of the photoelectric component is not sheltered completely, and when the photoelectric component is not detected, the illuminated surface of the photoelectric component is sheltered completely, so that the accuracy of the detection result is effectively improved; and at the same time, the intermittent illuminance detection device has certain dustproof and rainproof functions, so that overlong illumination duration of the photoelectric component is avoided and the service life of the photoelectric component is guaranteed; in addition, the intermittent illuminance detection device has a better self-checking function, so when the external illuminance does not need to be detected, the illuminated component can be placed in a sealed darkroom, and the normal using performance of the photoelectric component is guaranteed by adopting a standard light source to perform self-checking and correction.

The invention discloses a passivated emitter region back surface partial diffused crystalline silicon solar cell preparation method. The method includes the following steps of: silicon wafer front surface inverted pyramid structure production; silicon wafer back surface partial region boron diffusion; silicon wafer front surface gate interdigital electrode heavy phosphorous diffusion; silicon wafer front surface light phosphorus diffusion; silicon wafer front surface silicon oxide (SiO2) anti-reflection passivation layer deposition; silicon wafer back surface silicon oxide (SiO2) passivation layer deposition; silicon wafer back surface electrode contact hole photoetching; silicon wafer front surface gate interdigital electrode lead hole photoetching, silicon wafer front surface gate interdigital electrode evaporation; silicon wafer back surface aluminum electrode evaporation; silicon wafer front surface electrosilvering and annealing; and solar cell formation. With the method of the invention adopted, the front surface of a cell is of an inverted pyramid structure, and the light receiving effect of the cell is better than that of an ordinary texturized surface structure, and the cell has very low reflectivity, and therefore, the Jsc of the cell can be improved.

The invention provides a slot type solar energy collection device based on a black body absorption principle. A rotary table fixedly-connected gear is installed on the lower portion of a heat collection device rotary table of the device, a paraboloid heat collection tube joint shaft drives two heat collection tube supporting columns and a parabolic reflector to rotate axially, a heat collection tube is installed on the two heat collection tube supporting columns, a water pump is communicated with the heat collection tube through two flexible water tubes to form a water circulation passage, a gap is formed in the side face of the heat collection tube which is of a double circular tube sleeve cavity structure, and an interlayer of a double circular tube is filled with a nanofluid medium; a photoelectric sensor and a temperature sensor transmit a sensed signal to a control integrated box. The problems that for an existing slot type solar energy collection heat collection technology, the heat collection tube heat collection efficiency is low, the heat transmission efficiency is low, and the heat loss is large are solved. Accordingly, the collection efficiency and transmission efficiency are improved, and by means of an aerogel insulating layer, heat loss due to radiation is reduced; by means of a light chasing system and a temperature control system, the whole adaptability of the device is improved.