5724 results about "Sunlight" patented technology

The invention discloses an optical storage and charging integrated micro-grid energy management system, which relates to the related technical field of micro-grids and comprises an electric energy collection layer, a digital twinborn layer, a collaborative optimization layer, an application execution layer, a photovoltaic power generation unit, an energy storage unit, a charging load unit and a distributed measurement and control terminal. The invention further discloses an energy management method of the photovoltaic, storage and charging integrated micro-grid. The energy management method comprises the steps of data acquisition, digital twin modeling, multi-target strategy generation and optimization, strategy evaluation and screening, strategy issuing and execution and closed-loop feedback and dynamic correction. According to the invention, through short-term prediction of a digital twinborn layer and real-time generation of a charging and discharging strategy by a collaborative optimization layer, fluctuating renewable energy sources are preferentially consumed, the light abandoning rate is reduced, energy storage charging is automatically triggered in an illumination peak period, and power overflow is avoided; based on the simulation result of the digital twinborn model, the power distribution of energy storage and load is dynamically adjusted, so that the photovoltaic utilization rate is improved, and the dependence on a traditional power grid is reduced.

The invention provides a solar cell, a manufacturing method thereof and a photovoltaic module, and relates to the photovoltaic field. The solar cell comprises a substrate which comprises a first surface and a second surface which are opposite to each other, the first surface is provided with a groove, microstructures are arranged on the first surface of the periphery of the groove, the bottom surface of the groove and the side face of the groove respectively, and the multiple microstructures comprise a first conical structure, a second conical structure and a columnar structure, the height direction of the first conical structure intersects with the height direction of the second conical structure, and the side face of the columnar structure inclines towards the peripheral direction of the groove. The first passivation layer is located on the first surface. The problem that in the prior art, a solar cell is low in sunlight absorption rate is at least solved.

The invention provides a building external sunshade dynamic photo-thermal regulation and control optimization method and system based on joint simulation, and relates to the technical field of building design, and the method comprises the steps: building a building model, and setting building operation parameters; constructing an external shading calculation model of the building; simulating and calculating energy consumption intensity, sunlight utilization indexes and glare probabilities under different external sunshade regulation and control thresholds according to historical meteorological data on the basis of the constructed building model and the external sunshade calculation model; and performing multi-objective optimization on the obtained energy consumption intensity, sunlight utilization index and glare probability under different external sunshade regulation and control thresholds, and determining an optimal external sunshade regulation and control threshold. The optimal external sunshade opening threshold value can be screened, and the user experience is improved.

The invention provides a perovskite laminated photovoltaic cell assembly and a preparation method thereof, the perovskite laminated photovoltaic cell assembly comprises a plurality of first battery packs connected in parallel, each first battery pack comprises a plurality of laminated cells connected in series, and each laminated cell comprises a perovskite cell and a crystalline silicon cell which are stacked; a first light absorption layer and a first hole transport layer of the perovskite cell are etched by P2 laser to form a plurality of perovskite sub-cells which are connected in parallel, and the perovskite cell is used for absorbing short-wavelength light in front sunlight; the second hole transport layer and the intermediate electrode layer of the crystalline silicon cell are etched by P1 laser to form a plurality of crystalline silicon sub-cells which are connected in parallel, the perovskite cell is used for absorbing long-wavelength light in front sunlight, and the absolute value of the difference between the current density of the perovskite cell and the current density of the crystalline silicon cell is smaller than or equal to a first preset value. According to the laminated battery piece, the current density consistency of the perovskite battery and the crystalline silicon battery in the laminated battery piece is high, the electrical loss can be reduced, and the power generation efficiency can be improved.

The invention relates to the technical field of satellite orbit prediction, and discloses a satellite orbit prediction method based on a physical information neural network, a terminal and a medium. The method comprises the following steps: constructing a sample set based on satellite position data, sun position data and moon position data in the same time period; constructing a physical information neural network; the network takes satellite historical position data as input to predict a satellite orbit position at a future moment; training a physical information neural network by using the sample set, and executing a satellite orbit prediction task by using the trained physical information neural network; the trained loss function comprises data loss, physical loss and smoothness loss; the data loss is used for measuring the difference between network prediction output and actual observation data; the physical loss is jointly calculated by the earth aspheric perturbation, the three-body gravitational perturbation and the solar light pressure physical perturbation borne by the satellite; the smoothness loss is used for constraining the smoothness of the predicted satellite orbit. According to the invention, the prediction precision and robustness of the satellite orbit are improved.

The invention relates to a method for setting power loss of a mountain photovoltaic array. The method comprises the following steps of: establishing a coupling causal spectrum of multi-source factors including terrain, angle, sunlight, temperature, dust and wiring mode to component output; identifying a dominant loss path based on an identification method of a Bayesian network; outputting a structure weight matrix of the power loss, and identifying an inclination angle gt; a temperature gt; a set of influence factors of the wiring topology pair setting; calculating a power loss response index of each component based on the loss path weight; forming a response index thermodynamic diagram by using a space weight interpolation algorithm, and performing array space sensitive partitioning; the high response area is used as a preferential setting target, and the low response area enters an observation maintenance mechanism; by constructing the response index and the correction response potential function based on multi-factor coupling, the power response potential of the component to the setting operation can be accurately identified, the problems of average adjustment and low-efficiency resource allocation in a traditional setting method are effectively avoided, and it is ensured that setting resources are intensively input into a high-response area.

The invention discloses a toilet head product defect automatic detection production line, and relates to the technical field of defect optical detection, the toilet head product defect automatic detection production line comprises a production conveying roller, an optical detection chamber is fixedly connected to the upper end face of the production conveying roller, a power switch is fixedly connected to the side wall of the production conveying roller, and a mounting rack is fixedly connected to the upper end face of the optical detection chamber; the two sides of the optical detection chamber can be intermittently and automatically opened in the closestool product conveying process, the two sides are closed after the closestool product is moved into the optical detection chamber, an external light source is prevented from entering the optical detection chamber, interference of external light rays (such as sunlight and workshop lighting light) can be effectively isolated, and the detection efficiency is improved. The light received by the detection equipment only comes from the detection light source, so that the problem of unstable light intensity is avoided, the accuracy and the reliability of a detection result are improved, the condition of light pollution caused by superposition of an external light source and the detection light source is avoided, and the precision of detecting surface flaws of a closestool product by an optical detection room is improved.

The invention belongs to the technical field of seawater desalination, and particularly relates to a solar efficient photo-thermal conversion type floating ball and seawater evaporation application thereof. Specifically, the solar efficient photo-thermal conversion type floating ball comprises a spherical inner core and a photo-thermal conversion material wrapping the spherical inner core, and the density of the spherical inner core is 25-500 kg / m < 3 >; wherein the photo-thermal conversion material is coated at least twice. According to the solar efficient photo-thermal conversion type floating ball, the photo-thermal conversion material is coated at least twice, the loading capacity is improved, meanwhile, a porous network structure is formed, and the seawater evaporation rate can be increased; sunlight irradiates on the floating ball, light energy is converted into heat energy under the action of the surface photo-thermal conversion material, salt is deposited on the floating ball along with water evaporation, and surface salt deposition is automatically and dynamically removed through the free rotating motion of the floating ball on the water surface under the action of centrifugal force and water flow scouring. And self-recovery of the evaporation process and continuous seawater evaporation are realized.

The invention discloses a photovoltaic auxiliary greenhouse cultivation system which comprises a greenhouse body composed of a framework system and a photovoltaic ceiling, and the photovoltaic ceiling is laid on the top of the framework system, provided with a light splitting type solar thin film cell panel set with adjustable light transmittance and laid in a partitioned mode according to the illumination requirement. The dynamic light compensation system, the temperature balance system and the energy storage system are arranged at the top of the framework system, the energy storage system is used for storing energy and supplying power, the dynamic light compensation system is used for supplementing light for each indoor crop area according to photosynthetically active radiation and sun illumination conditions, and the temperature balance system is used for ventilating and humidifying the greenhouse; and the control machine is arranged on the greenhouse main body and is electrically connected with the dynamic light compensation system, the temperature balance system and the energy storage system so as to receive the monitoring data and control the operation of each electric appliance element. According to the system, lithium battery energy storage and a grid-connected inverter are integrated, the energy self-sufficiency rate is optimized, and the space utilization rate is increased through spectrum customization and three-dimensional planting; the method is suitable for tilled land shortage areas, and gives consideration to clean energy production and agricultural efficient output.

The invention provides an environment-considered photovoltaic panel cleaning scheme determination method, and belongs to the technical field of photovoltaic panel cleaning.The method comprises the steps that firstly, real-time weather data and prediction data are obtained, and an environment stain correlation model is established; a multispectral camera is adopted to identify the types of stains on the surface of the photovoltaic panel and calculate a distribution map; calculating a cleaning index by combining the generating capacity data and the solar irradiation intensity, and determining a cleaning priority; a weather adaptability scoring system is constructed, and a robot operation environment threshold value is set; dividing power generation time periods according to the sunlight intensity and calculating an optimal cleaning time window; cleaning schemes are matched according to different stain types, and parameters are adjusted according to environmental conditions; calling a stain cleaning efficiency optimization function to carry out multi-objective optimization; and finally, generating an optimal cleaning path and parameter configuration by utilizing the photovoltaic cleaning planning network model. The technical problem that a photovoltaic panel cleaning scheme cannot be adaptively optimized according to complex and changeable environmental factors is solved.

The invention relates to a preparation method of a coaxial cellulose-based aerogel fiber fabric for daytime radiation refrigeration, which is characterized in that coaxial fibers take pure cellulose as a core, a skin layer comprises hollow silicon dioxide and low-concentration cellulose, and the hollow silicon dioxide is uniformly dispersed in the cellulose; the preparation method comprises the following specific steps: S1, preparing hollow silicon dioxide with an adjustable particle size; s2, preparing a hollow silicon dioxide / cellulose mixed spinning solution; s3, dissolving cellulose; s4, carrying out coaxial wet spinning; s5, carrying out multi-step solvent replacement; s6, performing continuous normal-pressure drying; s7, weaving fibers; the woven aerogel fiber fabric can effectively scatter sunlight, and the solar reflectivity (gt; 92%), and the emissivity (gt; 96%); the preparation method is green and environment-friendly, the operation is simple, the continuous and large-scale production of the cellulose-based aerogel fiber can be realized, and the prepared coaxial aerogel fiber fabric can show excellent radiation refrigeration performance in the daytime.

The invention discloses a sky-ground integrated sunlight-induced vegetation chlorophyll fluorescence monitoring system, and belongs to the technical field of remote sensing monitoring. The system provides functions, parameter constraints and cooperation relations of space-based, empty-based and foundation chlorophyll fluorescence information acquisition and data analysis processing and application modules. Spatial scale matching, spectral scale matching, observation angle matching and atmospheric element matching are performed on the acquired sky-ground multi-element data with different scales, so that reflection characteristics, heat dissipation, photochemical indexes, fluorescence emission and atmospheric transmission characteristics during vegetation photosynthesis can be completely acquired; the invention provides a parameter relation and a method for extracting a fluorescence full-spectrum radiation information curve based on oxygen absorption and Fraunhofer dark line. On the basis of sky and landmark calibration and model verification, chlorophyll fluorescence detection of different fineness degrees of global large-range, key areas and ground crown planting scales can be carried out, various stress effects of vegetation can be monitored in real time, and the primary total productivity of the vegetation can be accurately estimated.

The invention belongs to the technical field of water desalination, and particularly relates to a bionic aloe evaporation and capture integrated all-weather water collecting device and a manufacturing method. The water collecting device comprises a base and a plurality of bionic units arranged on the base, and the bionic units are bionic aloe trees; the base is circular, the bionic units are circumferentially distributed around the circle center of the base, and at least two layers of bionic units are arranged; and the water collecting device is prepared from a hydrogel material. The base part of the device can utilize the photo-thermal characteristic of hydrogel in the daytime, and seawater evaporation can be carried out through sunlight; at night, mist catching can be carried out through the tip effect of the aloe form of the bionic unit, and water vapor in the air is collected. The whole device can play a role in the whole day and is not limited by the difference between the day and the night, and the fresh water collection efficiency is greatly improved.

The technical scheme of the invention discloses a photovoltaic power generation and greenhouse agriculture integrated system. According to the photovoltaic agricultural integrated technology disclosed by the invention, photovoltaic power generation and greenhouse planting are innovatively combined, and a solar panel with adjustable light transmittance of 30%-90% is mounted at the top of an agricultural facility, so that sunlight is utilized for power generation, and illumination required by crop growth is reserved. The system disclosed by the invention is provided with an intelligent sensor and an AI algorithm, environment data is monitored in real time, the angle, light supplementing intensity, temperature and humidity of the photovoltaic panel are dynamically adjusted, and different crop requirements (such as low illumination of leaf vegetables and medium and strong illumination of fruits and vegetables) are accurately matched. Residual electricity is stored or connected to a grid, photovoltaic waste heat is recycled in winter for heat preservation, sun shading and cooling are conducted in summer, and efficient circulation of energy is achieved.

The invention discloses a passive radiation refrigeration coating and a preparation method thereof, and relates to the technical field of industrial coatings. Comprising a fluoroacrylate emulsion, hollow glass beads, nano titanium dioxide, flaky silicon dioxide aerogel powder, polytetrafluoroethylene micro powder, hydroxyl-terminated polydimethylsiloxane, a hydroxyl acrylic acid modified silane coupling agent, a super-hydrophobic modified fluorosilicone surface additive, nano cerium oxide, aluminum fluoride doped zinc oxide infrared enhancement powder and deionized water. The paint is prepared on the basis of the formula. According to the invention, a multi-scale spectrum regulation and control and surface self-cleaning system is constructed cooperatively, so that the synergistic effect of high reflection of a sunlight region and high emission of a middle infrared region is realized. The coating can maintain continuous passive refrigeration in a day and night period, the surface of the coating has self-cleaning capability and excellent ultraviolet aging resistance, and high reflectivity and high radiation emissivity can be maintained for a long time in a complex outdoor environment, so that the thermal management efficiency of buildings and equipment is remarkably improved.

The invention relates to the technical field of refrigeration material preparation, in particular to an efficient passive radiation refrigeration material suitable for a sub-super environment and a preparation method and application of the efficient passive radiation refrigeration material. The method comprises the following steps: uniformly mixing thermoplastic polyurethane, sunlight high-reflection inorganic particles and a phase change material in a solvent; after a chemical foaming agent is added, the obtained suspension liquid is heated and foamed in a confinement mold, and wet gel is formed; and finally, carrying out freeze drying treatment to obtain the composite porous aerogel. The prepared material has a micro-nano porous skeleton formed by TPU, and inorganic particles and PCM are uniformly dispersed in the skeleton wall. Through component cooperation and a special porous structure, the material has extremely high sunlight reflectivity and mid-infrared emissivity, self-adaptive temperature regulation and control are achieved through PCM phase change, the problem that refrigeration of a traditional material fails in the sub-environment such as the vertical surface is effectively solved, and efficient sub-super-environment heat management is achieved.

The invention relates to the technical field of ecological product accounting, in particular to an intelligent operation and maintenance system of a solar photovoltaic energy storage system, which comprises a state judgment module used for judging the operation state of the solar photovoltaic energy storage system, and specifically comprises the following steps of: aiming at collected real-time operation data, comparing the operation data with a safe operation data threshold value, and judging the operation state of the solar photovoltaic energy storage system; and determining the operation state of the solar photovoltaic energy storage system according to a comparison result, and determining the operation state of the solar photovoltaic energy storage system according to a function scoring result by constructing a stability scoring function of the solar photovoltaic energy storage system and taking the collected real-time operation data as a variable of the function. And the intelligent operation and maintenance module is used for carrying out intelligent operation and maintenance on the solar photovoltaic energy storage system, specifically, the intelligent operation and maintenance module adaptively selects a corresponding operation and maintenance level based on the system operation state result output by the state judgment module, and executes a corresponding operation and maintenance decision according to the operation and maintenance level.

The invention discloses a novel photocatalyst for producing hydrogen from organic matter wastewater and a preparation method of the novel photocatalyst, and relates to the technical field of photocatalysis. The photocatalyst disclosed by the invention is combined with oxidation-reduction capability, and can effectively degrade and produce hydrogen under the irradiation of sunlight. Through combination of quaternized porous tungsten oxide and vanadate radicals, silver vanadate load growth is promoted, the sunlight utilization rate is increased, and the electron-hole recombination rate is reduced. Reduced graphene oxide is used for pretreatment, active groups are introduced, the reduced graphene oxide is compounded with tungsten oxide / silver vanadate, the binding force is enhanced through heat treatment, photo-induced electron-hole pair compounding is inhibited through the conductivity, and the visible light catalytic performance is improved. The adsorption effect of porous tungsten trioxide and reduced graphene oxide can accelerate the degradation of organic matters. By optimizing the proportion of silver vanadate, tungsten oxide and reduced graphene oxide, the visible light response and charge separation efficiency are enhanced, the degradation and hydrogen production performance is improved, and light corrosion is reduced.

The side light-emitting device comprises a frame extending in the vertical direction and a light source module arranged on the inner side of the frame, the light source module emits light in the direction parallel to the extending direction of the frame, a light distribution piece is arranged in a light emitting path of the light source module, and the side light-emitting device is arranged on the side light-emitting device. The light rays are refracted by the light distribution piece and then are emitted in the direction away from the frame. The side light-emitting device can simulate the effect of illuminating the frame on one side of the window when sunlight enters from one side of the window, and can form a virtual image and simulate the window shadow effect in cooperation with the light-emitting surface of the lamp, so that the display effect of the lamp is more vivid, and the visual experience of a user is improved.

The invention discloses a water-cooling refrigeration station system optimization control method for a public building, and relates to the technical field of exhibition hall refrigeration control, and the method comprises the steps: carrying out the three-dimensional dynamic grid modeling of the whole exhibition hall space, monitoring the basic sensible heat and solar radiation conditions in the exhibition hall in real time, obtaining the heat load weight, and dividing the exhibition hall into different regions; according to the heat source distribution value of each exhibition hall partition, a physical field coupling thermal load prediction model is set, and thermal load prediction values of the exhibition hall partitions are predicted in combination with airflow, heat conduction and solar radiation heat absorption of the glass curtain walls; according to the thermal load threshold value, whether the next step is carried out or not is judged; and a rotational flow air port with an angle adjusting mechanism is installed beside the main machine room, and the air supply angle and the air speed are adjusted according to the thermal load predicted value of the exhibition hall partition. The problems that when a large-area French window or a glass curtain wall is directly irradiated by sunlight in summer, instantaneous large load increase is caused, and air supply dead corners and uneven layering are caused by a high-density showcase and a temporary partition are solved.

The invention relates to the technical field of fixing devices, and discloses a solar photovoltaic power generation panel fixing device which comprises a T-shaped frame, a rotating shaft is rotatably connected to the inner wall of the T-shaped frame, a supporting table is fixedly connected to the rear portion of the T-shaped frame, a motor is fixedly connected to the top of the supporting table, and a belt pulley set is fixedly connected to the output end of the motor. The photovoltaic panel can change according to the movement position of the sun, so that the photovoltaic panel can receive the highest sunlight intensity all the time, the sunlight conversion efficiency of the photovoltaic panel can be maximized, meanwhile, installation of the photovoltaic panel can be rapidly completed, the installation time of workers can be saved, and the installation efficiency of the workers is improved. The photovoltaic panel installation device can be installed on a roof quickly, can be installed according to photovoltaic panels of different sizes, avoids the problem that the photovoltaic panels are not matched during installation, and can improve the installation diversity of the photovoltaic panels.

The invention discloses a highway tunnel vehicle-mounted lighting system for intelligently measuring and calculating lamp lightening time based on an interval, and relates to the technical field of highway tunnel lighting energy saving. The invention discloses a highway tunnel vehicle-mounted lighting system for intelligently measuring and calculating lamp lightening time based on an interval. The highway tunnel vehicle-mounted lighting system comprises an interval division module, a lighting analysis module and a lighting control module. According to the method, the highway tunnel is subjected to refined interval division, vehicle shielding features, identification information and timestamps are combined, vehicle passing key features are dynamically obtained, the illumination path of each vehicle can be accurately predicted, and vehicle-mounted response and on-demand illumination are achieved; and front and back external environment illumination change information is fused, sunlight reflection illumination features are extracted, interference of strong sunlight reflection, entrance and exit light difference and the like on illumination control is eliminated from the source, and the environment adaptability and recognition accuracy of an illumination system are remarkably improved.

The invention relates to the technical field of materials adaptive to extreme environments, and discloses cross-scale gradient co-doped multifunctional composite aerogel as well as a preparation method and application of the cross-scale gradient co-doped multifunctional composite aerogel. The multifunctional composite aerogel is co-doped with ultraviolet light-screening agent nano-particles, infrared light-screening agent nano-particles and functional nano-particles in a cross-scale gradient manner, and is used for performing selective filtration and full-spectrum regulation and control on sunlight penetrating through the transparent aerogel; the ultraviolet light-screening agent particles are titanium dioxide nano particles; the infrared opacifying agent particles are indium tin oxide nanoparticles; and the functional nanoparticles are silver nanorods. The composite aerogel provided by the invention improves the anti-ultraviolet performance and high-temperature heat insulation performance of the aerogel and provides a function of enhancing photosynthesis of plants, and meanwhile, the transmittance of the transparent aerogel in the visible light band of sunlight is not obviously reduced.

The invention discloses a method for improving the generation power of a photovoltaic module, and belongs to the field of photovoltaic technology, the photovoltaic module is provided with an angle regulation and control device, the angle regulation and control device is used for changing the setting direction of the photovoltaic module in space, and the method comprises the following steps: obtaining geographic information of the position of the photovoltaic module; determining the relative position of the photovoltaic module and the sun according to the geographic information; determining a first set angle of the photovoltaic module according to the relative position; the first setting angle is a setting angle in the space when the photovoltaic module generates peak power; setting the photovoltaic module according to the first setting angle through the angle regulation and control device so as to improve the generation power of the photovoltaic module; and obtaining shielding object information of the position where the photovoltaic module is located, and correcting the setting angle of the photovoltaic module according to the first setting angle and the shielding object information so as to improve the power generation power of the photovoltaic module. The problem that after the photovoltaic module is arranged, the optimal sunlight cannot be received under the shielding of the environment, so that the optimal output power cannot be achieved is solved.

The invention relates to the technical field of path planning, in particular to an unmanned aerial vehicle intelligent inspection method and system for a non-stop fan. Comprises: obtaining a target static parameter, an environment parameter and a target dynamic parameter; according to the initial position of the unmanned aerial vehicle, the target static parameter and the blade rotating speed, identifying and obtaining an unmanned aerial vehicle inspection path set; wherein the unmanned aerial vehicle inspection path comprises an unmanned aerial vehicle inspection point; predicting angles among a visual equipment camera lens, a blade surface normal and solar rays when the unmanned aerial vehicle shoots at the inspection point, and obtaining an inspection quality coefficient in combination with the three-dimensional contour of the to-be-inspected area of the blade; according to the target static parameter, the target dynamic parameter and the environment parameter identification, obtaining an inspection safety coefficient representing the operation stability degree of the unmanned aerial vehicle; according to the invention, optimization identification is carried out through the inspection quality coefficient, the inspection safety coefficient and the inspection path total duration of the unmanned aerial vehicle inspection point, and the optimal inspection path is obtained.

The present invention relates to an exposed water-based asphalt-based waterproof coating material and a preparation method therefor, and a waterproof laminate. The exposed water-based asphalt-based waterproof coating material comprises anionic emulsified asphalt, a polymer emulsion, a filler, and an auxiliary agent, wherein the anionic emulsified asphalt is prepared by melt-blending matrix asphalt with a composite weather-resistant additive and then emulsifying the resulting blend. The composite weather-resistant additive is a combination of an antioxidant and an ultraviolet absorbent in a mass ratio of 0.5-2:1, and the polymer emulsion is one of or a combination of more than one of a weather-resistant styrene-acrylic emulsion, a weather-resistant pure acrylic emulsion, and a weather-resistant silicone acrylic emulsion. By introducing the antioxidant and the ultraviolet absorbent into the anionic emulsified asphalt, the present invention improves the stability of a waterproof coating material system and avoids a demulsification phenomenon; moreover, by using a weather-resistant polymer emulsion in combination with a filler and an auxiliary agent, the weather resistance of the prepared waterproof coating material is greatly improved; furthermore, by means of the protective effect and the sunlight reflecting effect of white sintered sand adhered to a surface of the coating material, the waterproof system can be used as an exposed product for waterproof construction of buildings that have been in exposed environments for a long time.

The invention relates to the technical field of oil-immersed power transformers, in particular to an oil-immersed power transformer which comprises an oil-immersed power transformer body, a transformer oil conservator is fixedly mounted on the oil-immersed power transformer body, and a fixing frame is fixedly connected to the transformer oil conservator. The sunshade curtains are fixedly connected to the two sides of one end of the fixing frame, the transmission mechanism is fixedly connected to the fixing frame, the curtain pulling frame is arranged on the fixing frame in a sliding fit mode, the oil conservator cleaning mechanism is arranged at the bottom end of the middle of the curtain pulling frame in a sliding fit mode, and the air guide mechanisms are fixedly connected to the fixing frame. The curtain pulling frame is driven by the transmission mechanism to move, so that the sunshade curtain can be unfolded to block above the transformer oil conservator, and sunshade protection is performed on the transformer oil conservator. Direct irradiation of the sun to the oil conservator can be effectively shielded, sunlight radiation heat transfer is reduced, the temperature of the oil conservator is prevented from being too high, and then the temperature of oil in the transformer is effectively reduced.

A window visor extension removably connected to at least a portion of a visor of a vehicle, the window visor extension including a main body movably connected to the visor to at least partially cover a side window of the vehicle while disposed against the side window, a movable extension hingedly disposed on at least a portion of the main body to move from retracted against the main body in a first position to at least partially extended away from the main body in a second position, and move from extended away from the main body in the second position to retracted against the main body in the first position, such that the movable extension increases a total coverage area of the side window to block sunlight coming through the side window while the movable extension is extended, and a plurality of connecting rods removably connected to at least a portion of the main body to connect the main body to the visor.

An automatic sunshield device is disclosed, which is a unique sunshield that protects the interior upholstery of a vehicle. The automatic sunshield device comprises first and second body components that are configured to slide out on tracks installed on opposite sides of the front and rear windshields to protect the vehicle when in a parked position. The body components would run on a track above and below the vehicle windshield, residing in the front frames of the vehicle, so it would remain invisible when not in use. The two body components of sunshield material would roll out and meet in the middle to interlock like puzzle pieces to create a total shield from sunlight. Movement of the body components is facilitated by the vehicle motor or an independent motor.

The invention discloses a photovoltaic-photothermal-thermoelectric coupling system capable of efficiently utilizing sunlight. The system comprises a photovoltaic power generation module, a photo-thermal module and a thermoelectric power generation module, the photovoltaic power generation module is located on the upper layer of the whole system and is composed of a light condensation layer and a photoelectric conversion layer, and the photoelectric conversion layer converts photons in solar energy into electric energy through a photovoltaic cell; the photo-thermal module captures low-energy photons in sunlight through a heat absorption material, converts photon energy which cannot be utilized by a photovoltaic cell into heat energy through infrared radiation, and provides heat energy for the thermoelectric power generation module through heat conduction; and the thermoelectric power generation module is closely connected with the photo-thermal module, absorbs heat generated by the photovoltaic power generation module and the photo-thermal module and converts the heat into electric energy, and the thermoelectric material of the thermoelectric power generation module is a magnesium-based thermoelectric material. The problems of low energy conversion efficiency and high cost in the existing photovoltaic technology can be effectively solved, the utilization rate of solar energy is improved, and the method has remarkable application value in the field of renewable energy utilization.