74results about How to "Improve light energy conversion efficiency" patented technology

The invention relates to a titanium dioxide/polyaniline photocatalyst with a 3D pattern structure and a preparation method of the titanium dioxide/polyaniline photocatalyst. The preparation method comprises the steps of dispersing carbon balls in absolute ethyl alcohol, adding TBOT, dropping distilled water, centrifugally separating, and drying to obtain brown powder; calcining the brown powder to obtain hollow titanium dioxide nanometer particles, dispersing the hollow titanium dioxide nanometer particles in the absolute ethyl alcohol, dispersing ANI (aniline) in hydrochloric acid, agitating in an ice-water bath to obtain a deep green suspension; and centrifugally separating, and drying to obtain a deep green TiO2/polyaniline (PANI) compound photocatalyst. Polyaniline is used as a sensitizer for modifying titanium dioxide, the operation is simple, reaction conditions are mild and the cost is low. Light is repeatedly refracted and absorbed by using polyaniline nanometer sheets which are mutually meshed, and thus full utilization on solar light is realized, the specific surface area of a composite material can be increased by the polyaniline nanometer sheets, more active sites are provided for light-catalyzed reaction, the light energy conversion efficiency and the photo-catalysis efficiency are improved, the PANI is high in absorption coefficient in a visible light region, and azo-dyes, namely MO and CR, can be directly degraded by using solar light.

The invention provides a light source automatic tracking type solar collecting device. The light source automatic tracking type solar collecting device can automatically track a sun light source, a solar cell panel can be irradiated by sun light vertically and continuously, and therefore the light energy conversion efficiency is improved. The light source automatic tracking type solar collecting device comprises a base, a solar cell panel base is movably connected to the base through a horizontal steering device and a dip angle pitching device, the solar cell panel is flatly laid on the solar cell panel base, a horizontal steering collecting pipe and a dip angle pitching collecting pipe which are perpendicular to the solar cell panel are arranged on one side of the solar cell panel base, and photoelectric sensors are arranged in the horizontal steering collecting pipe and the dip angle pitching collecting pipe. A control device is further included. The invention further provides a control method of the device.

A light charging redox flow battery comprises a sensitized semiconductor electrode (1), a cathode electrolyte (7), an anode electrolyte (8), a diaphragm (2), a current collector (6), a liquid storagetank (4), a pump (3) and a liquid flow battery reaction chamber. By sensitizing semiconductor electrode, solar energy can be directly used to charge cathode electrolyte and anode electrolyte, and solar energy can be directly converted into chemical energy, which can be stored in liquid storage tank in the form of redox electrolyte, and can be reused in the form of electric energy at any time. Theinvention has the advantages of optimizing the combination of the existing dye-sensitized solar cell and the liquid-flow cell, not only having the advantages of light energy conversion function of thedye-sensitized solar cell, friendly environment and low cost, but also having the advantages of relatively independent output power and capacity of the liquid-flow cell, flexible system design and the like.

The invention discloses a solar charging pile for an electric vehicle. The solar charging pile for the electric vehicle comprises a solar panel, a connecting wire, a charging head, an illuminating lamp, a limiting buckle, a motor, a heat insulation tank, a third gear, a shock absorbing springs, a mounting frame, fixing triangular supports, second electric push rods, rollers and a bracket. As the second electric push rods and the rollers are arranged, the solar charging pile for the electric vehicle is convenient to convey in the transporting process; as the motor is arranged, the solar panel is convenient to slowly rotate so that the direction of the solar panel can be right against the sun to enhance the optical energy conversion efficiency every day; as the heat insulation tank is arranged, the operations of parts in the mounting groove cannot be conveniently prevented from being affected due to high temperature caused by exposure to sunlight; as the limiting buckle is arranged, thecharging head can be conveniently prevented from being repeatedly taken by other people at will to cause the wear of the connecting wire so that the risk of electric shock is avoided; as the illuminating lamp is arranged, convenience is provided for customers to use at nights; and as the mounting frame is arranged, the box body can be effectively isolated from the ground so that a box body is noteasy to get rusty.

The invention relates to a large-scale solar heat collector capable of integrating heat conveying and heat collection and a method for manufacturing the large-scale solar heat collector and belongs to the technical field of solar photo-thermal utilization. The large-scale solar heat collector is characterized by comprising an air channel structure supporting frame in a cage structure, wherein the sections of two ends are in an opening structure; one side face is a heat collection surface, and the rest of side faces are non-heat-collection surfaces; an air heat exchange device is arranged on the heat collection surface, and sandwiched heat-preserving air channel composite plates are arranged on the non-heat-collection surfaces; and a pipeline structure is formed by enclosing the sandwiched heat-preserving air channel composite plates and the heat collection surface. During the manufacturing of the large-scale solar heat collector, the air channel structure supporting frame is manufactured firstly, and then the sandwiched heat-preserving air channel composite plates, the air heat exchange device, a keel and the like are fixedly arranged. The invention has the advantages that: the air heat exchange device with a selective heat-absorbing coating plate absorbs solar energy; gas in the pipeline structure is heated, and hot air is generated and used for industrial and agricultural production; and the large-scale solar heat collector can have any length according to practical requirements, can integrate the heat conveying and the heat collection and provide hot water, is convenient to use, high in optical energy conversion efficiency and long in service life.

The invention discloses a novel micro-photovoltaic solar street lamp, which comprises a photovoltaic panel, a battery pack, an LED module, a digitally controlled full-bridge buck-boost circuit, a power input/output sampling circuit (5a) and a processor circuit, wherein the photovoltaic panel is electrically connected with the battery pack through the digitally controlled full-bridge buck-boost circuit; the power input/output sampling circuit (5a) is electrically connected with the photovoltaic panel and the processor circuit; the power input/output sampling circuit (5a) is used for sampling output voltage and current of the photovoltaic panel and then outputting the output voltage and current into the processor circuit for data collection; and the processor circuit is used for calculatingan optimum power point for MPPT according to the collected data and adjusting output charging voltage of the digitally controlled full-bridge buck-boost circuit, so that the photovoltaic panel chargesthe battery pack through a maximum power point. Microcurrent is collected and boosted through the digitally controlled full-bridge buck-boost circuit and is fully utilized, so that the efficiency ofconverting light energy into electric energy can be effectively improved.

The invention discloses a thin Fresnel lens with a short focal length. The thin Fresnel lens comprises a reference plane and a light-condensing plane, wherein the light-condensing plane is provided with a light-condensing projection formed by an inclined surface and a vertical surface. The light-condensing projection comprises a reflection projection performing reflection on the inclined surface. The light-condensing plane of the Fresnel lens is provided with the reflection projection such that when light perpendicular to the reference plane is irradiated to the inclined surface of the reflection projection, total reflection occurs on the inclined surface of the reflection projection. And then, light is focused at the focal point of the lens through refraction, thereby effectively shortening the focus length of the lens.

The invention discloses a roof tile or tile type solar thermal energy collector. The solar thermal energy collector comprises a fixing plate fixed on a roof, the fixing plate is formed by welding a plurality of stainless steel plates, and a hydrophobic groove is formed in the upper end of each stainless steel plate; a supporting rod is fixedly connected to the upper end of the fixing plate, a mounting plate is arranged at the upper end of the supporting rod in a rotating mode, and the supporting rod is located at the lower end of one side of the mounting plate; a hydraulic oil cylinder is arranged in the middle of the upper end of the fixing plate, and the telescopic end of the hydraulic oil cylinder is rotationally connected to the lower end of the mounting plate; two buffering devices are fixedly connected to the upper end of the fixing plate, and the upper ends of the two buffer devices are rotationally connected to the lower end of the mounting plate; and a plurality of solar vacuum tubes are fixedly connected to the upper end of the mounting plate at equal intervals, and a water tank is fixedly connected to the upper end of the mounting plate. According to the solar thermal energy collector, the structural design is reasonable, the light energy conversion efficiency of the solar collector is improved, and resources are saved.

The invention discloses a photovoltaic water heater which comprises a photovoltaic panel assembly, a water storage tank, a first controller and a heating element. The heating element is arranged in the water storage tank and is a low-voltage heating rod, the water storage tank is arranged in an indoor environment, a first temperature sensor is arranged in the water storage tank and is connected with an input end of the first controller, the photovoltaic panel assembly is connected with the low-voltage heating rod by a wire and a first control switch, and the first control switch is connected with an output end of the first controller. The photovoltaic water heater has the advantages that the low-voltage heating rod is used as the heating element, and can be normally started to work under the condition of insufficient illumination, accordingly, water can be heated, the problem that water can be heated by the aid of light energy only under the condition of sufficient illumination in the prior art can be solved, and the light energy conversion efficiency can be improved.

The invention discloses a heterojunction back contact solar cell and a forming method thereof. The heterojunction back contact solar cell comprises but is not limited to a semiconductor substrate, a first passivation layer and a heterojunction. The first passivation layer is formed on the back surface of the semiconductor substrate, the heterojunction can be formed on the back surface of the firstpassivation layer, the heterojunction comprises an N-type doped silicon thin film and a P-type doped silicon thin film, and the N-type doped silicon thin film and the P-type doped silicon thin film form a laminated structure along the vertical direction. The forming method of the heterojunction back contact solar cell comprises: forming a heterojunction on the back surface of a semiconductor substrate, the heterojunction comprising an N-type doped silicon thin film and a P-type doped silicon thin film which are formed in sequence, and the N-type doped silicon thin film and the P-type doped silicon thin film form a laminated layer in the vertical direction. According to the invention, the production cost of the heterojunction back contact solar cell can be effectively reduced on the premise that the cell efficiency is not reduced, and the light energy conversion efficiency is relatively high.

The invention discloses a preparation method of a rodlike N-doped niobium pentoxide photocatalyst. The preparation method comprises the steps of preparing rodlike niobium pentoxide; and preparing the rodlike N-doped niobium pentoxide photocatalyst. According to the preparation method, metal niobium powder and urea are used as raw materials to prepare the rodlike N-doped niobium pentoxide photocatalyst. The preparation method can remarkably improve the photocatalytic activity of the niobium pentoxide, effectively enhance the sunlight utilization rate of the niobium pentoxide and further widen the application range of theniobium pentoxide photocatalyst. The rodlike N-doped niobium pentoxide photocatalyst can rapidly and effectively mineralize organic pollutants in water into CO2 and H2O, has high repeating utilization rate, has good application prospect and economic benefit and achieves an environment-friendly effect.

The invention relates to a microscopic endoscopy imaging method and system based on structured light illumination. The method comprises the following steps of controlling a first illumination light source and a second illumination light source to sequentially transmit exciting light, and respectively produce fluorescence signals; controlling a double-shutter camera to acquire the produced fluorescence signals and obtain two images; and performing treatment on the acquired two images to obtain one image, wherein the first illumination light source is a structured light illumination light source, and the second illumination light source is a wide field illumination light source. The system comprises a first illumination light path, a second illumination light path, a beam combining light path and an imaging light path. According to the method and system disclosed by the invention, a scanning device is not needed; a manner of combining structured light illumination image with wide field illumination imaging is adopted, the fluorescence signals are sequentially acquired, the high-quality fluorescence in-focal images can be obtained through synthetizing of the two images, and the imaging speed is high; the situation that a pinhole blocks the light is avoided, the light energy utilization rate is high, the number of the produced fluorescence signals is large, the fluorescence imagingsensitivity is high, and the obtained fluorescence tissue images are rich in information.

The invention provides a colorful photovoltaic lawn lamp which comprises a main lamp device. The main lamp device comprises a base support. A lamp cover is fixedly connected above the base support. The area of the bottommost layer of the base support is a loudspeaker box and storage battery storage area. The middle portion of the base support is a hollow part, and a supporting plate used for carrying a signal processing controller is arranged at the position, above the hollow part, of the base support. The lamp cover comprises an upper top plate and a lower bottom plate which are horizontallyarranged. The lower bottom plate is installed at the upper end of the base support, a main lamp illumination lamp is fixedly connected to the middle portion of the lower end face of the upper top plate, and the upper end of the upper top plate is provided with a main lamp solar photovoltaic plate of an off-network photovoltaic device. The main lamp solar photovoltaic plate is connected with a storage battery, music color lamps are fixedly connected to the periphery of the upper top plate, the music color lamps are connected with corresponding music color lamp illumination circuits, and the music color lamps can flicker with different colors along with the music frequency. By means of the colorful photovoltaic lawn lamp, the functions that music can be played, and the music color lamps canconduct illumination and can change the brightness along with music are added.

The invention discloses a preparation method and application of a biodegradable rare earth fluorescent film. According to the method, a PLA matrix is doped with a trinuclear rare earth europium complex luminescent material Eu3(TTA)9-TPMB to obtain the biodegradable rare earth fluorescent film with PLA as the matrix, wherein, the mass ratio of the PLA to the Eu3(TTA)9-TPMB is 100: (1-10). The biodegradable rare earth fluorescent film made of the Eu3(TTA)9-TPMB-doped PLA matrix has the advantages that the biodegradable rare earth fluorescent film can be degraded completely and is environmentallyfriendly, green and free from pollution; the biodegradable rare earth fluorescent film also has the advantages of trinuclear rare earth europium complex luminescent materials, including superior luminescent property and high energy transfer efficiency; europium ions have unique red-light luminescent property, the wavelength is between 610nm and 640nm, plant photosynthesis is benefited to help plant production, and a good agricultural value is achieved; the biodegradable rare earth fluorescent film has a simple preparation process and a low cost, and is suitable for popularization and application.

The invention belongs to the technical field of agricultural cultivation, and particularly relates to a method of interplanting wheat and pumpkins. The method comprises the steps of wheat planting, pumpkin planting, interplanting and watering management and harvesting. Compared with the prior art, the method for interplanting the wheat and the pumpkins has the advantages that the pumpkins are interplanted among the wheat, water or angelica sinensis treatment liquid are irrigated in an appropriate period, so that water supplement can be conducted on the flowering and vine-stretching period of the pumpkins, and the quantity accumulation of dry matter of root systems and the portions above the ground is facilitated to make a root-shoot ratio reach 2% or above; meanwhile, through the cooperation of the grain-filling period of the wheat and the angelica sinensis treatment liquid, the yield of the interplanted wheat can be significantly increased; compared with the prior art, the irrigation amount under a high-yield condition is reduced by about 30%, the fluorescence parameters of leaves keeps at a relatively high level in the late growth period, and the conversion efficiency of light energy is improved; meanwhile, in cooperation with drought stress in the early period, the stress resistance capability of leaves can be significantly improved, and the uniformity of water saving and high yield can be achieved.

The invention discloses a greenhouse system for cultivating plants by means of solar energy. The greenhouse system comprises a greenhouse room and a control system. A dual-glass light permeable photovoltaic module is laid on the top of the greenhouse room. Three of the four wall bodies of the greenhouse room are of glass wall body structures. French windows are evenly distributed on the glass wall bodies. The control system comprises a centralized control system, an irrigation system, a temperature control system, a window opening and closing control system, a light control system and a storage battery. The centralized control system is connected with the irrigation system, the temperature control system, the window opening and closing control system, the light control system and the storage battery. The window opening and closing control system is connected with the French windows. The storage battery is connected with the power generation dual-glass light permeable photovoltaic module.

The present invention relates to a solar energy generation network device. The device comprises a box body and a device body installed at the inner side of the upper portion of the box body, the lower portion of the box body is hemispheric, and the quality of the lower portion of the box body is larger than the quality of the upper portion of the box body; a motor having an upward output shaft is fixedly arranged at the upper end of the box body, a solar panel is obliquely arranged at the output shaft of the motor, and the output shaft of the motor drives the rotation of the solar panel; the upper end of the motor is provided with a photoresistor, the photoresistor is located at the back of the solar panel; and one end of the photoresistor is connected with the motor, the other end of the photoresistor is connected with a storage battery, and the storage battery is connected with the solar panel through a line. Compared to the prior art, the solar energy generation network device facilitates transportation and disposing, realizes automatic control for arrangement facing to the sun of the solar panel and improves the optical energy conversion efficiency.

The invention discloses a solar water heater comprising a machine body and a mounting rack fixedly arranged on the top of the machine body, an adjustment cavity with an upward opening is arranged in the end face of the top of the mounting rack, a reflection cavity communicating with the adjustment cavity is arranged in the machine body, a mounting plate is arranged in the inner wall of the rear side of the adjustment cavity, a first rotation shaft extending forwards is rotationally matched and mounted in the mounting plate, the front side end of the first rotation shaft is in power connectionwith a first motor fixedly arranged in the inner wall of the front side of the adjustment cavity, the first rotation shaft is fixedly provided with a circular lens positioned in the adjustment cavity,arc-shaped slots are symmetrically arranged in left and right inner walls of the adjustment cavity, and a sliding block is mounted in each arc-shaped slot in a sliding manner.

The invention is suitable for the technical field of agricultural greenhouses and provides a new energy greenhouse, which comprises a supporting frame, a solar panel and a fixing frame connected withthe solar panel; the fixing frame is provided with a plurality of moving devices and tilting devices; the moving devices comprise a moving rod, a driven piece sleeved with the moving rod, a driving piece meshed with the driven piece and limit plates positioned at two sides of the driven piece; the driving piece is connected with a driving device, the tilting device comprises a fixing plate, a rotating frame movably connected with the fixing plate and an adjusting rod arranged on the rotating frame, wherein a guide plate is arranged on the fixing plate, a moving space is arranged on the guide plate, one side of the rotating frame is connected with the guide plate through a fixing rod and a rotating wheel, the adjusting rod is connected with the solar panel through a synchronous rod, an arc-shaped guide groove is arranged on the rotating frame, one end of the adjusting rod is movably connected with the rotating frame, and the other end of the adjusting rod is positioned in the guide groove. Therefore, the position and angle of the solar panel can be effectively controlled and adjusted, and the light energy conversion effect is fully achieved.

The invention provides a solar steam thermoelectric system and belongs to the field of power generation equipment. The solar steam thermoelectric system comprises a solar energy collecting assembly, a high-pressure hot water boiler, a steam converting power device, a generator, a steam radiator and a high-temperature water pressing-back device. The high-pressure hot water boiler is located at the energy output end of the solar energy collecting assembly. The steam converting power device is provided with a high-pressure water steam input end, a power output end and a lower-pressure water steam output end. The high-pressure water steam input end is connected with the high-pressure hot water boiler. The generator is connected with the power output end. The steam radiator is connected with the lower-pressure water steam output end. High-pressure liquid water flows back into the high-pressure hot water boiler through the high-temperature water pressing-back device. According to the solar steam thermoelectric system provided by the invention, after high-pressure water steam does work, the steam radiator lowers the temperature of low-pressure steam to the critical point, low-temperature steam condenses into high-temperature hot water, high-temperature hot water flows back into the high-pressure hot water boiler, the internal energy of water steam can be fully used, and the efficiency of light energy conversion is further improved.

The invention discloses a one-button arm extending and retracting system and method of a solar panel cleaning device. The system comprises a control device, a processor, an executing device, and a data collecting device mounted on a mechanical arm, wherein the control device and the data collecting device are electrically connected with the signal input end of the processor, and the signal output end of the processor is electrically connected with the executing device; the mechanism comprises a vertical arm, a horizontal arm, a brush rack lifting push rod and a cleaning brush rack; the control device comprises an operating panel and a display unit, the operating panel is provided with two function buttons including an one-button arm retracting button and a three-position button; when stirred upwards, the three-position button achieves left arm extending, when stirred downwards, the three-position button achieves right arm extending, and when stirred in the middle, the three-position button is in zero position. The method comprises one-button arm extending, one-button arm retraction and teaching programming. According to the one-key arm extending and retracting system and method of the solar panel cleaning device, through improvement of a traditional solar panel cleaning device, the solar panel cleaning device can achieve precise positioning to rapidly clean solar panels, thereby improving the light energy transformation efficiency of the solar panels, reducing operating time and increasing the working efficiency.