36results about How to "Reduce shading rate" patented technology

The invention relates to a solar battery, in particular to a back contact heterojunction solar battery based on an N-type silicon slice. According to a back face feature, the back contact heterojunction solar battery is divided into an N-type region and a P-type region, wherein the N-type region forms an N+a-si/i-a-si/N-c-si/N+c-si heterojunction structure; and the P-type region forms an N+a-si/i-a-si/N-c-si/N+c-si/i-a-si/P-a-si heterojunction structure. In the solar battery, the light attenuation phenomenon of the conventional P-type crystal silicon solar battery can be avoided; the solar battery has higher spectral response; the thickness of the solar battery is greatly reduced compared with that of the conventional crystal silicon solar battery; electrodes are all printed on the back face of the battery, so the problem that the front electrode of the conventional solar battery blocks light is solved; therefore, the conversion efficiency of the solar battery is improved greatly; by a low-temperature sintering process, a production process is simplified greatly and production cost is reduced; and the solar battery is applicable to industrialized production.

The invention discloses a three-dimensional cultivation method for greenhouse crops. The method comprises the following steps: (1) building a greenhouse, wherein the front roof angle of the greenhouse is greater than 45 degrees; (2) building a trapezoidal planting table in the greenhouse, wherein the trapezoidal planting table comprises a plurality of steps, handrails are arranged on the two sides of the steps, and the steps and the handrails can all be formed by connecting a plurality of steel pipes of different lengths; (3) placing cultivation vessels on each step of the trapezoidal planting table, and filling a cultivation medium into the vessels; (4) planting photophilous plants in the medium and planting sciophilous plants in the ground below the trapezoidal planting table. The method has the beneficial effects that the greenhouse span is shortened, the front roof angle is increased, the sunlight receiving angle of the greenhouse is increased, the temperature of the greenhouse is increased, the crops planted on the inclined plane are gradient in height, the mutual shading rate is reduced, the planting density can be increased, the yield is improved, and a shady space is formed on the lower part of the greenhouse to plant the sciophilous plants.

The invention relates to a solar cell front face grid line and a solar cell sheet printed with the front face grid line. The front face grid line of the solar cell sheet comprises a main grid and a secondary grid and is formed by four mutually-parallel main grids and a plurality of secondary grid lines which are mutually parallel and are vertical to the main grids; cell back face electrodes are located on a cell back face and correspond to the quantity and the position of front face main grids; and a main grid line and the back face electrodes are formed by solid or hollow or sectioned patterns. According to the solar cell sheet disclosed by the invention, the filling factor and the conversion efficiency of a solar cell can be improved, and silver slurry consumption in a production process is reduced.

The invention discloses a cover plate folding and opening type mechanical attic device and belongs to the field of building attics. By means of the mechanical attic device, an attic cover plate is designed to be of a horizontal curtain-shaped cover plate structure, a cover plate can be controlled to be folded when the attic is not used, the ventilating performance of the whole space is maintained,and the lighting performance of small-area buildings is ensured; meanwhile, a folding stair linked with the folding or unfolding action of the cover plate is further arranged on the mechanical atticdevice, the folding stair is driven to be synchronously unfolded through a linking control frame while the attic cover plate is unfolded, people can enter and exit from the attic conveniently, when the attic cover plate is folded, the stair can automatically reset, and space is not occupied; and in addition, a folding handrail is further arranged, the folding or unfolding action of the folding handrail and the attic cover plate is also of linking design, the linking control frame is used for driving the folding handrail to ascend to be unfolded, the use safety of the attic is improved, when the attic cover plate is folded, the folding handrail can automatically descend to be folded, and the light shielding rate of the handrail is reduced.

The invention discloses a method for cultivating environment-friendly and pollution-free leaf radishes, and belongs to the technical field of agricultural cultivation. The method includes 25-mesh white insect-proof net mulching; utilization of a black sunshade net; high-density seeding without thinning and three-time harvesting. The method has the advantages that pesticides can be omitted owing to 25-mesh white insect-free net mulching, so that the environment-friendly and pollution-free agricultural products can be produced; the germination rate and the emergence rate are increased owing to the sunshade net, and influence of scouring of rainstorms is relieved; owing to a process for high-density seeding without thinning and three-time harvesting, the acre yield is increased while the cost is saved, the frequency of supplying the products for markets is increased, duration of supplying the products for the markets is prolonged, and an acre benefit is increased; by the method for cultivating the environment-friendly and pollution-free leaf radishes, the acre benefit is increased by 600 yuan at least, and the method can be implemented easily and conveniently, is suitable for cultivating the leaf radishes, can be well received by production bases or growers and has an excellent popularization and application prospect.

The invention discloses a solar energy battery module, which comprises a plurality of solar energy batteries. The light-facing side of each solar energy battery is equipped with M first conflux electrodes and the light-back side of each solar energy battery is equipped with N second conflux electrodes. M is a natural number equal to or greater than 1. N is a natural number greater than M.

The invention relates to a low-power backlight component, including a light guide board, a tube and a reflection sheet. The light guide board is of a sheet structure composed of a bottom surface, a top surface and four side surfaces, where the top and bottom surfaces of the four side surfaces are mutually vertical, and the tube is on a side surface of the light guide board and guides the light into the light guide board. The reflection sheet is on the bottom surface of the light guide board and can reflect the incident light into the light guide board, making the light which is guided into the light guide board outgo from the top surface of the light guide board. It coats at least one of the top surface, and the bottom surface /four side surfaces with a layer of fluorescent agent to form a fluorescent layer, where the fluorescent agent can absorb the incident light to make the light stay for a short time and then outgo outwards. Therefore, it has better intensifying property and homogeneous degree, able to reduce the power consumption of the tube.

The invention discloses an efficient LED plant lamp capable of achieving angle adjustment. The efficient LED plant lamp comprises a greenhouse steel frame and a ground support. A support rod is connected to the lower end of the middle of the greenhouse steel frame. A fixing plate is arranged at the top end of the support rod and connected with a slide rail through screws. A clamping jaw is clampedto a slide way of the slide rail, and the lower end of the clamping jaw is rigidly connected with the middle of the upper end of a rigid support. The two sides of the lower end of the rigid support are fixedly connected to the upper end of a main body lamp bracket. The two ends of the main body lamp bracket are provided with hinge-joint grooves in a spaced manner. The efficient LED plant lamp hasthe beneficial effects that by means of a rotary lamp bracket which is arranged in a rotary manner, angle adjustment of a sliding frame can be achieved when an iron cable is taken up and paid off, and furthermore, plants can obtain light illumination at more angles; the shading rate can be reduced to a great extent, and the plant growing speed is increased; and by means of the hanging structure,the traditional plant lamp storage mode can be avoided, the occupied area of the efficient LED plant lamp is reduced to a great extent, and reasonable utilization of resources is achieved.

The invention discloses a rapid suspension type photovoltaic power generation assembly with dynamic linkage adjustment, and relates to the field of photovoltaic power generation mechanisms. Accordingto the invention, a plurality of first in-groove driving gears are fixedly arranged in a second mounting groove body of a second fixed supporting body; a plurality of second in-groove driving gears with corresponding gear radiuses are fixedly arranged in the second mounting groove body of the second fixed supporting body; the second in-groove driving gears are meshed and matched with a third synchronous rack; an output shaft rod of a first power device is fixedly connected with a fourth fixed connecting plate; one end of the fourth fixed connecting plate is fixedly connected with a fourth endside plate; and a fourth telescopic driving device is arranged on the fourth end side plate. According to the invention, a defective photovoltaic panel can be conveniently and rapidly disassembled andtransported to a maintenance center for maintenance, and the installation is very convenient; and the distances between the adjacent third suspension bodies are adjusted through a penetrating rack plate, and shading between the front photovoltaic panel and the rear photovoltaic panel is reduced while the number of the photovoltaic power generation panels is increased.