23 results about "Photovoltaic conversion efficiency" patented technology

The application discloses a Ga2O3 / Si TOPCon photovoltaic cell, which comprises an n-type silicon wafer, a tunneling layer, an n-type polycrystalline silicon layer and a back electrode are sequentially arranged on the back surface of the n-type silicon wafer from near to far, and an intrinsic beta-Ga2O3 layer, a passivation layer and an anti-reflection layer are sequentially arranged on the front surface of the n-type silicon wafer from near to far; a pair of top electrodes are further arranged on the intrinsic beta-Ga2O3 layer, and the two top electrodes sequentially penetrate the passivation layer and the anti-reflection layer and extend out of the anti-reflection layer. The application solves the problem of low photovoltaic conversion efficiency caused by optical loss due to the absorption of the polycrystalline silicon layer on the front surface to incident visible light in the prior art.

The application relates to the field of information technology and discloses a photovoltaic power generation prediction method and system based on snow influence, which constructs a first historical constant-temperature aging efficiency curve by using historical power generation related data of photovoltaic power generation equipment in a target area under snow conditions, determines a snow state change area in the curve, determines first historical photovoltaic conversion efficiency data of the area based on snow distribution uniformity, determines equipment state data and snow adhesion intensity data of the photovoltaic power generation equipment based on the first historical photovoltaic conversion efficiency data and the snow state change area, further constructs a second historical constant-temperature aging efficiency curve, combines the obtained curve with corresponding historical temperature and humidity data, further determines second historical photovoltaic conversion efficiency data of the photovoltaic power generation equipment to calculate a power prediction value of the photovoltaic power generation equipment in a future preset period, accurately evaluates the influence of snow on photovoltaic power generation efficiency, and further accurately predicts the power of the photovoltaic power generation equipment under the influence of snow.

This invention provides a method and system for optimizing the configuration of equipment capacity in offshore energy island systems, relating to the field of integrated offshore energy planning technology. Specifically, it includes: collecting meteorological data, load demand, and equipment parameters within an assessment period; calculating the cumulative corrosion factor corresponding to each sampling time based on the meteorological data and equipment parameters; obtaining the initial performance parameters of wind power and photovoltaic equipment; using the cumulative corrosion factor in conjunction with rainfall intensity and effective scour volume to correct the initial wind energy utilization coefficient and photovoltaic conversion efficiency, generating wind power and photovoltaic power generation; obtaining an initial configuration scheme; analyzing the power generation, energy storage charging and discharging characteristics, and load demand; and iteratively optimizing the equipment capacity configuration scheme with the goal of minimizing economic costs. This invention constructs a capacity configuration system that integrates a physical dynamic degradation mechanism, achieving accurate and reliable planning of the equipment capacity of offshore energy islands.

The invention discloses a cadmium telluride photovoltaic module, a photovoltaic roof and a power generation glass curtain wall, and belongs to the technical field of photovoltaic equipment. The two glass plates are respectively arranged on two sides of the cadmium telluride structure and are used for protecting the cadmium telluride structure; the protection frame is connected to the peripheries of the two glass plates, and the back face of the protection frame is fixedly connected with an assembly plate; the counterweight plate is arranged below the assembling plate, a first protective shell is installed at the top end of the counterweight plate, a vertical servo motor used for following light is installed on the inner wall of the first protective shell, an output shaft of the vertical servo motor penetrates through the first protective shell to be connected with a vertical rotating rod, and a second protective shell is installed at the top end of the vertical rotating rod; the inner wall of the second protective shell is provided with a transverse servo motor used for following light. The cadmium telluride photovoltaic module, the photovoltaic roof and the power generation glass curtain wall have a good protection function, the service life of the module is prolonged, adjustment is flexible, and the photovoltaic conversion efficiency is improved.

Laser induced firing processing equipment includes at least two processing stations, and a support module. A laser module and an electrical input module are provided at each processing station. The support module includes at least one support unit and a first driving mechanism for driving the support unit to move sequentially from a first processing station to a second processing station. Each electrical input module includes a conductive module and a second driving mechanism connected to the conductive module. The conductive module includes a first electrode and a second electrode to be in electrical contact with an upper surface and a lower surface of a cell, and the first electrode is located above the support unit. The processing equipment can address the issue of poor uniformity of contact resistivity caused by the conductive modules blocking laser, thereby improving the photovoltaic conversion efficiency and realizing mass production.

The application discloses a concentrated solar spectrum reforming power generation system matched with high band gap battery, which focuses solar radiation energy to the opening of a cavity type absorber through a concentrator, so that the absorber is heated to a high temperature, and converts the solar radiation energy into heat energy; a specially designed selective radiator is closely arranged on the outer wall of the absorber; the radiator can be heated to the same high temperature as the absorber; the high band gap photovoltaic battery is arranged in parallel with the radiator; the radiator with the selective radiation characteristic radiates the reforming spectrum corresponding to the temperature; the heat energy is converted into the reforming radiation energy again; the reforming spectrum and the absorption spectrum of the high band gap battery are well matched; the radiation energy is efficiently converted into electric energy; and a high solar thermal photovoltaic conversion efficiency can be realized. The cavity structure absorber is adopted in the application, and the whole power generation system can realize a solar conversion efficiency of more than 37%, and has important application value.

The present invention discloses a photovoltaic glass for a BIPV assembly and a method for manufacturing the same. The photovoltaic glass includes a glass body, an anti-reflection layer, and a coloring layer. The glass body has a patterned structure on its surface, and the patterned structure has adjacent first and second patterned surfaces. An angle α is formed between the first patterned surface and the glass body, and an angle β is formed between the second patterned surface and the glass body, where α≧β. The anti-reflection layer is provided on the first patterned surface or on the surface of the glass body facing the patterned structure, and the coloring layer is provided on the second patterned surface. By providing a patterned structure on the glass body and providing an anti-reflection layer and a coloring layer, the present invention not only improves photovoltaic conversion efficiency but also maintains aesthetic harmony between the assembly and the building, improving its aesthetic appearance.

To provide a solar cell, a method of manufacturing the same, a photovoltaic power generation assembly, and a power consumption device for improving photoelectric conversion efficiency of the solar cell.SOLUTION: The present application relates to a solar cell and a preparation method thereof, a photovoltaic assembly and a power consumption device. The solar cell includes a plurality of sub-cells, each of the plurality of sub-cells includes a first electrode layer, a photoelectric conversion assembly, and a second electrode layer that are sequentially stacked in a thickness direction of the sub-cell, the second electrode layer includes a body portion and a connection portion electrically connected to the body portion, and the connection portion of one of the plurality of sub-cells is electrically connected to the first electrode layer of another one of the plurality of sub-cells to electrically connect the plurality of sub-cells. Here, the thickness of the main body portion is larger than the thickness of the connection portion. To improve the photoelectric conversion efficiency of a solar cell.SELECTED DRAWING: Figure 3

The invention discloses a thermal desorption soil remediation device combined with solar energy, and belongs to the technical field of soil remediation devices.The thermal desorption soil remediation device comprises a horizontal heating furnace, an exhaust port is formed in the upper end of the horizontal heating furnace, and a filtering assembly used for treating waste gas is arranged at the upper end of the exhaust port; a heating assembly used for heating soil is arranged on the inner wall of the horizontal heating furnace, and a solar assembly used for supplying power is arranged on one side of the horizontal heating furnace. The solar panel absorbs sunlight, converts the sunlight into electric energy and stores the electric energy into the storage battery pack, and the electric energy is provided for the device to heat soil conveniently; the inclination angle of the solar panel is adjusted through rotation of the fixing frame along the first hinge seat, and the sunlight absorption efficiency is guaranteed. And meanwhile, in the angle adjusting process, through cooperation of a second hinge seat, a sliding rod, a piston plate and a piston cylinder, dust removal on the surface of the solar panel is achieved, dust and sundries are prevented from blocking light, and the photovoltaic conversion efficiency of the solar panel is further guaranteed.

The invention relates to the field of photovoltaic cells, and provides a photovoltaic cell, a laminated cell and a photovoltaic module, and the photovoltaic cell comprises a cell piece surface of at least one side of a cell piece body, and the cell piece surface comprises second regions which are oppositely arranged in a first direction and a first region which is arranged between the opposite second regions; the first area is provided with opposite edge areas in the second direction and a middle area arranged between the opposite edge areas; the main grids are arranged in the middle region, the main grids extend in the first direction, and the multiple main grids are sequentially arranged at intervals in the second direction; the fine grids are arranged in the first area, extend in the second direction and extend into the edge area, the fine grids are sequentially arranged at intervals in the first direction, the fine grids are electrically connected with the main grids, and at least the problems that the collection area of grid lines is limited, and the photoelectric conversion efficiency is improved in a bottleneck mode are solved.

Disclosed are a semiconductor substrate and a treating method thereof, a solar cell and a preparation method thereof. The method for treating a semiconductor substrate includes forming a smooth surface area and a textured surface area adjacent to the smooth surface area on at least one side of the semiconductor substrate. The area of the smooth surface area is greater than or equal to that of the textured surface area. A smooth surface area and a textured surface area adjacent to the smooth surface area are formed on at least one side of the semiconductor substrate, so that the transparent conductive film is located and only located on the smooth surface area. A grid line is formed on the side of the corresponding to the transparent conductive film facing away from the semiconductor substrate, thereby improving the photovoltaic conversion efficiency of the solar cell.

This utility model relates to a photovoltaic-thermal device utilizing liquid-encapsulated electronic components, comprising a photovoltaic cell surrounded by a dielectric liquid. The device has an expansion volume to accommodate compressible gas, accommodating thermal expansion and contraction. An airtight, moisture-proof edge sealant, a transparent front panel, and a back panel jointly encapsulate the device. A heat collector can be placed within the dielectric liquid to extract heat energy. An optional configuration includes liquid supply / discharge holes to achieve dielectric liquid circulation. An internal frame provides structural support for the photovoltaic cell and can be configured with cell disconnect points for easy disassembly of all individual components. This device can be configured in a passive heat extraction mode, conforming to photovoltaic device standards, and can improve photovoltaic conversion efficiency, achieve parallel electrothermal power generation, efficient heat extraction, a robust fire-resistant structure, and disassembly capability.

The invention relates to the technical field of LED lamps, and discloses a heat dissipation device for an LED lamp, the heat dissipation device comprises an LED lamp body, the two sides of the LED lamp body are movably connected with buckle frames, and the top of the LED lamp body is fixedly connected with a heat dissipation base; by synchronously realizing comprehensive self-cleaning of the filter screen, the radiating fins, the heat-conducting fins and the photovoltaic panel, the influence of dust accumulation on the radiating efficiency and the photovoltaic conversion efficiency is reduced from the source, and a double-layer filter structure is matched, so that the dust attachment probability is reduced, the stable temperature of the LED lamp body during long-term working is ensured, and the service life of the lamp is prolonged; meanwhile, the filtering function and the self-cleaning function are coordinated, the sweeping action of the top filter screen and the heat dissipation action of the main transmission fan are driven by the same power source, and closed-loop operation of filtering, heat dissipation and ash removal is achieved; by means of the photovoltaic self-energy-supply and energy-storage integrated system, light energy wasted by the lamp is fully recycled, and external energy does not need to be consumed; and meanwhile, the motor is started only when the temperature exceeds the standard through a temperature self-adaptive regulation and control mechanism, so that the energy consumption is reduced.

The present application relates to a kind of two-stage distributed photovoltaic MPPT control method.The control method will variable step duty cycle scanning method and adaptive incremental conductance method be fused and applied, first variable step duty cycle scanning is executed global scanning, with the size of step size dynamic adjustment by region division, greatly improve scanning speed, scanning is accurately output optimal duty cycle after completion;Subsequently, this duty cycle is imported as initial parameter into adaptive incremental conductance method and carries out more detailed local search, to further improve the tracking efficiency of photovoltaic system, and makes photovoltaic system stable operation in global maximum power point.The control method combines the quick response advantage of variable step duty cycle scanning method and the high-precision tracking characteristics of adaptive incremental conductance method, can significantly improve photovoltaic conversion efficiency, and creates considerable economic benefits for practical engineering application.

Laser induced firing processing equipment includes at least two processing stations, and a support module. A laser module and an electrical input module are provided at each processing station. The support module includes at least one support unit and a first driving mechanism for driving the support unit to move sequentially from a first processing station to a second processing station. Each electrical input module includes a conductive module and a second driving mechanism connected to the conductive module. The conductive module includes a first electrode and a second electrode to be in electrical contact with an upper surface and a lower surface of a cell, and the first electrode is located above the support unit. The processing equipment can address the issue of poor uniformity of contact resistivity caused by the conductive modules blocking laser, thereby improving the photovoltaic conversion efficiency and realizing mass production.

The invention discloses a photovoltaic support capable of being rapidly installed, and relates to the technical field of photovoltaic equipment supporting, the photovoltaic support comprises a photovoltaic support body, connecting frames are detachably installed at the two ends of the bottom of the photovoltaic support body, supporting columns are fixedly installed at the bottoms of the connecting frames, and auxiliary frames are fixedly installed on the outer sides of the supporting columns; the bottom of the supporting column is fixedly connected with a fixed base, and the assembling mechanism is arranged at the top of the connecting frame and used for disassembling and assembling the photovoltaic support body. When the inclination angle of the photovoltaic support body is adjusted, locking can be unlocked by unscrewing the limiting nut, the adjusting plate can be driven to swing around the axis by rotating the movable column, then the push rod is pulled through the connecting base, and finally the connecting frame is driven to rotate around the connecting point of the connecting frame and the supporting column to achieve angle change. The inclination angle of the photovoltaic panel is quickly optimized according to season change and regional latitude difference, and the photovoltaic conversion efficiency is improved to the maximum extent.

The invention provides an organic radiation photovoltaic isotope battery. The organic radiation photovoltaic isotope battery comprises a shell with an accommodating cavity, the winding structure is arranged in the accommodating cavity, the winding structure comprises a radiation layer, a photovoltaic module and a fluorescent layer arranged between the radiation layer and the photovoltaic module, and the photovoltaic module comprises a positive pole piece adjacent to the fluorescent layer, a negative pole piece and an active layer arranged between the positive pole piece and the negative pole piece; the active layer is made of an organic donor material and an acceptor material, and the organic donor material comprises a polymer derived from a thiophene structure unit; the acceptor material comprises a first acceptor material and / or a second acceptor material, the first acceptor material comprises an electron withdrawing group and a fused ring structure, the second acceptor material comprises fullerene and a fullerene derivative, and the electron withdrawing group comprises at least one of a halogen group,-CN and a thiazolone group. The organic radiation photovoltaic isotope battery effectively solves the challenges of the traditional battery in the aspects of miniaturization, photovoltaic conversion efficiency, integration level and cost.

A photovoltaic support convenient to maintain disclosed by the present invention comprises a substrate bearing plate, the top surface of the substrate bearing plate is provided with an adjustable support structure, the adjustable support structure comprises a rotary driving shaft, the photovoltaic support also comprises a rotary cleaning mechanism, the rotary cleaning mechanism comprises a rotary gear disc, the rotary gear disc sleeves a lower fixed limiting sleeve, and the rotary driving shaft is connected with the rotary gear disc. Guide sliding rods are fixedly mounted on the transverse supporting rods, position adjusting seats are connected to the guide sliding rods, telescopic supporting rods are hinged to the position adjusting seats, cleaning rollers are arranged on the telescopic supporting rods in a sleeving manner, and cleaning scraping strips are fixedly mounted between the cleaning rollers; when the photovoltaic panel is cleaned, a user can drive a rotating gear disc to rotate, then a telescopic supporting rod drives a cleaning scraping strip and a cleaning roller to be attached to the outer wall of a photovoltaic panel body to transversely rotate relative to the photovoltaic panel body, and accumulated dust on the surface of the photovoltaic panel body can be transversely removed in the rotating process; therefore, stubborn accumulated dust on the photovoltaic panel main body can be more effectively removed, and the photovoltaic conversion efficiency is greatly improved.

The utility model provides a photovoltaic power generation assembly convenient to adjust, which relates to the technical field of photovoltaic power generation and comprises a base, a photovoltaic panel arranged on one side of the top of the base, a vertical rod arranged on one side of the outer end of the photovoltaic panel, and snow melting assemblies arranged on two sides of the outer end of the photovoltaic panel and used for melting accumulated snow on the photovoltaic panel. The snow melting assembly comprises an air guide frame, a fan and an electric heating wire. According to the photovoltaic power generation assembly convenient to adjust, melting of accumulated snow at the top of the photovoltaic panel is accelerated through the snow melting assembly, so that it is ensured that sunlight can irradiate the photovoltaic panel in time, the photoelectric conversion efficiency of the photovoltaic panel is ensured, the photovoltaic panel can be protected through the protection assembly when hail falls, and therefore the photovoltaic panel is prevented from being collided and damaged by hail.

The invention provides a bifunctional BIPV system and a control method thereof, and relates to the technical field of photovoltaic power generation, and the bifunctional BIPV system comprises a semitransparent photovoltaic layer, a spectrum selective function interlayer, a heat energy heat collection layer and a control unit; the semitransparent photovoltaic layer, the spectrum selective function interlayer and the heat energy heat collection layer are sequentially arranged in a stacked mode from top to bottom, and the control unit is electrically connected with the semitransparent photovoltaic layer and the heat energy heat collection layer. The semitransparent photovoltaic layer absorbs ultraviolet light and visible light in sunlight and converts the ultraviolet light and the visible light into electric energy, the spectrum selective function interlayer transmits near-infrared light in the sunlight to the heat energy heat collection layer, and the heat energy heat collection layer absorbs the near-infrared light and converts the near-infrared light into heat energy. The control unit collects environment parameters and system operation parameters so as to dynamically adjust the distribution proportion of electric energy output and heat energy collection and execute water and electricity safety isolation and moisture blocking control. By means of the system, cascade efficient utilization of solar energy is achieved, photovoltaic conversion efficiency and hot water supply stability are improved, and the roof space utilization rate is increased.

The application discloses a vehicle-mounted multi-directional telescopic solar photovoltaic sunshade, which comprises a base assembly, a multi-directional telescopic assembly and a photovoltaic panel assembly; the photovoltaic panel assembly comprises fixed photovoltaic panels arranged on the upper surface of the base assembly, front and rear photovoltaic panels respectively connected with non-telescopic sections of two left and right telescopic pipes above the front surface of the base assembly, four inner photovoltaic panels respectively connected with telescopic ends of the two left and right telescopic pipes above the two front and rear photovoltaic panels, and two left and right photovoltaic panels respectively connected with non-telescopic sections of two front and rear telescopic pipes above the four inner photovoltaic panels. The vehicle-mounted multi-directional telescopic solar photovoltaic sunshade can be unfolded and stored in multiple directions according to actual use requirements, can maximize the coverage of the effective light-collecting area of the roof under the premise of not affecting the appearance and driving safety of the vehicle, can convert solar energy into electric energy when the vehicle is exposed to the sun and collect and utilize the electric energy, and effectively improves the photovoltaic conversion efficiency.

The invention discloses a building integrated photovoltaic glass clarifying agent and a preparation method thereof. The clarifying agent is an additive composition used for being added into soda-lime-silica base glass and is composed of an environment-friendly clarifying agent component and a light scattering enhancing component. The environment-friendly clarifying agent comprises the following components: calcium carbonate, superfine aluminum hydroxide, sodium nitrate, boric acid and calcium phosphate, and arsenic-antimony-free clarification is realized through multi-temperature-zone gradient deflation, viscosity regulation and nucleation synergy; the light scattering enhancing component comprises pre-dispersed nano titanium dioxide and neodymium oxide / erbium oxide, and is used for forming bulk phase Rayleigh scattering and realizing ultraviolet down-conversion. The preparation method comprises the steps of raw material pretreatment, mixing and addition of a pre-dispersed / activated premix. During application, the glass batch is added in proportion, and the photovoltaic glass is prepared by adopting the processes of segmented melting, high-temperature homogenization and controlled cooling. The light transmittance of the obtained glass is 84.8-89.8%, the haze is 2.5-4.6%, the photovoltaic conversion efficiency is improved by 2.1-3.5%, and the arsenic / antimony content is lower than the detection limit.

The invention relates to a stretchable organic photovoltaic material, and particularly discloses a stretchable donor polymer as well as a preparation method and application thereof. A main chain of the donor polymer is formed by alternating an electron donating unit benzodithiophene and an electron accepting unit dithieno thiazole, and meanwhile, an amide structural unit containing a C6 alkyl chain is introduced into the main chain. The polymer is used for preparing an organic solar cell active layer and is matched with an acceptor material to form a binary blending system. Under the condition that a third element is not needed, the active layer obtains a relatively large crystal coherence length while keeping relatively low overall crystallinity, so that the device has excellent tensile property and high photovoltaic conversion efficiency. The photoelectric conversion efficiency of a device constructed by blending the polymer D18-C6 and an acceptor material PY-IT reaches 14.67%, the device can still keep a working state under the condition of 30% strain, and compared with a conventional reference polymer system, the performance of the device is remarkably improved.