307 results about "Silicon cell" patented technology

The invention belongs to the technical field of rare and precious metal recovery, and particularly relates to a method for recovering metallic silver from waste crystalline silicon battery pieces, which comprises the following steps: (1) putting the waste crystalline silicon battery pieces into an inorganic alkali aqueous solution for soaking reaction to obtain an aluminum-containing solution and dealuminized crystalline silicon pieces; (2) adding the dealuminized crystal silicon wafer into a mixed solution of organic acid and hydrogen peroxide for soaking reaction, filtering and washing to respectively obtain silver-containing filtrate and a silver-removed silicon wafer; (3) carrying out chlorination precipitation reaction on the silver-containing filtrate and a chlorine source, filtering and drying to obtain silver chloride powder; (4) adding silver chloride powder into an ammonia water solution, heating and stirring to completely dissolve silver chloride to obtain a silver-ammonia solution; (5) adding PVP (Polyvinyl Pyrrolidone) into the silver-ammonia solution, heating and stirring until the PVP is completely dissolved, adding ascorbic acid, and carrying out reduction reaction at room temperature to obtain metal silver powder precipitate; and filtering, washing and drying the precipitate to obtain the spherical silver powder. According to the method, the silver recovery efficiency is high, the spherical nanoscale silver powder can be prepared, and the purity is high.

The invention discloses a method for recovering a silicon wafer and precious metal silver in a decommissioned crystalline silicon photovoltaic panel, which comprises the following steps of: 1, mechanically disassembling and pyrolyzing the decommissioned photovoltaic panel to obtain a crystalline silicon battery piece; 2, preparing molten salt, and heating the molten salt to melt the salt; and step 3, placing the crystalline silicon cell in molten salt, carrying out selective etching separation, taking out the crystalline silicon cell after etching is finished, and washing with water to obtain a silicon wafer and a silver wire. According to the method, the melting temperature of the used fused salt is low, silver and silicon in the photovoltaic panel can be separated in a targeted mode, the fused salt does not react with substrate silicon and silver wires on the surface, the high recovery efficiency of silver and silicon is guaranteed, meanwhile, environmental pollution caused by silver and silicon in the recovery process is reduced, on the basis, silver and silicon can be obtained through one-step separation and recovery, and the method is suitable for industrial production. The method has the advantages of simple operation, short process, environmental friendliness and the like.

The invention belongs to the technical field of solar cells, and relates to a perovskite laminated cell and a preparation method thereof, the perovskite laminated cell can reduce light parasitic absorption, the perovskite laminated cell comprises a bottom crystalline silicon cell, the bottom crystalline silicon cell comprises a substrate, the substrate comprises a first surface and a second surface which are opposite to each other, a first tunneling oxide layer and a first composite passivation layer are sequentially arranged on the first surface in the direction perpendicular to and away from the first surface, and the first composite passivation layer comprises first doped crystalline silicon conductive regions and first wide-band gap conductive regions which are alternately arranged in the direction parallel to the first surface; the top perovskite cell is arranged on the first composite passivation layer and is electrically connected with the bottom crystalline silicon cell, and the top perovskite cell comprises a hole transport layer, a perovskite active absorption layer, an electron transport layer, an interface buffer layer, a transparent conductive layer and an anti-reflection layer which are sequentially far away from the first composite passivation layer; and a first electrode in electrical contact with the transparent conductive layer.

The invention provides a waste photovoltaic module high-value recovery process based on pyrolysis and wet purification, which comprises the following steps: carrying out pyrolysis decarburization on a waste photovoltaic module to obtain a glass plate, a crystalline silicon battery piece and a copper-tin soldering strip; the method comprises the following steps of: performing alkaline leaching on a crystal silicon cell to obtain a dealuminized crystal silicon wafer, performing acid pickling on the dealuminized crystal silicon wafer to obtain a silver-removed crystal silicon wafer and a silver leaching solution, and extracting a silver elementary substance from the silver leaching solution; removing impurities from the silver-removed crystal silicon wafer through a hydrofluoric acid solution to obtain a high-purity crystal silicon wafer; recovering a copper strip from the copper-tin soldering strip through a high-temperature smelting reduction method; after fluorine-containing pyrolysis gas generated in the pyrolysis process is subjected to combustion and heat exchange, hydrogen fluoride is removed in a two-stage alkali liquor absorption mode, then washing is conducted, and finally obtained flue gas is discharged. According to the wet purification process, the waste crystalline silicon battery piece can be subjected to high-purity recovery, and the crystalline silicon piece, silver and copper with high purity can be obtained. The hydrogen fluoride is removed by adopting a two-stage alkali liquor absorption method, so that the treatment efficiency of the hydrogen fluoride in the pyrolysis gas is improved.

The invention discloses a novel device and method for intelligently disassembling a waste photovoltaic silicon cell panel. The device comprises two layers of transmission rollers and a conveying belt penetrating through the two layers of transmission rollers. The main control board is integrated with a fuzzy controller and a PID (Proportion Integration Differentiation) controller, a hierarchical decision algorithm and a BP (Back Propagation) neural network are deployed on the main control board, the PID controller is connected with the fuzzy controller, and the BP neural network is used for dynamically adjusting PID parameters of the PID controller; the support is fixedly provided with a six-axis servo motor, a back plate collecting bin, an air cooling fan and a copper solder strip absorbing device, the six-axis servo motor is fixedly connected with a vacuum suction cup array, the air cooling fan is fixedly provided with an infrared imager, and the support is provided with a double-layer heat cutter head. A resistance heating module and an electromagnetic induction heating module are nested on the outer surface of the double-layer hot cutter head, and a pressure sensor, a laser sensor and a temperature sensor which are fixedly connected with the main control board are fixedly arranged on the outer surface of the double-layer hot cutter head. According to the invention, the waste photovoltaic silicon cell panel can be intelligently and accurately segmented, the dependence on manpower is reduced, and high-quality recovery of the silicon cell panel is realized.

The invention relates to a process method for separating out-of-service photovoltaic modules, and belongs to the field of organic chemical industry and the field of efficient recycling of secondary resources. The method comprises the following steps: placing the retired photovoltaic module and an organic solvent containing diethylene glycol monobutyl ether in a dynamic fluid circulation system for layering treatment; the dynamic fluid circulation system controls the organic solvent to circularly flow on the surface of the decommissioned photovoltaic module to complete layering of the decommissioned photovoltaic module, and waste liquid and solids are obtained through solid-liquid separation; the solid object contains glass, a crystalline silicon battery piece and a back plate. According to the method, an appropriate solvent is selected and a flow field is optimized, so that efficient layering of an EVA packaging layer and stripping of a photovoltaic module are realized, and complete recovery of glass, a crystalline silicon battery piece and a back plate is ensured.

The present invention discloses a two-terminal perovskite-silicon tandem cell and a preparation method thereof, which are applied to the technical field of perovskite solar cells. The two-terminal perovskite-silicon tandem cell includes a tandem cell sheet, and the tandem cell sheet includes a perovskite cell structure for absorbing visible light and a silicon cell structure for absorbing near-infrared light. A near-infrared light conversion layer is provided on the light-incident side surface of the two-terminal perovskite-silicon tandem cell, and the near-infrared light conversion layer is a down-conversion thin film. By converting the short wave in sunlight into a long wave through the near-infrared light conversion layer, the problem of current mismatch caused by the two-terminal perovskite-silicon tandem cell under the illumination condition with a relatively high proportion of visible light is solved, so that the two-terminal perovskite-silicon tandem cell has high performance.

The invention provides a wet purification process suitable for silicon and precious metal of a waste photovoltaic laminated piece, which comprises the following steps of: immersing a waste crystalline silicon battery piece into a NaOH solution, and removing an aluminum wire on the surface of the crystalline silicon battery piece to obtain a dealuminized crystalline silicon piece; the dealuminated crystal silicon wafer is subjected to acid pickling, and a silver-removed crystal silicon wafer and silver leaching liquid are obtained; removing impurities from the silver-removed crystal silicon wafer through a hydrofluoric acid solution to obtain a high-purity crystal silicon wafer; and extracting the silver elementary substance from the silver leachate through a hydrazine hydrate reduction method. According to the wet purification process, the waste crystalline silicon battery piece can be subjected to high-purity recovery, and the high-purity crystalline silicon wafer and the silver elementary substance can be obtained.

The invention discloses a crystalline silicon cell module, a preparation method and a photovoltaic system, and belongs to the technical field of solar cells. The crystalline silicon battery assembly comprises a plurality of crystalline silicon battery pieces, the plurality of crystalline silicon battery pieces comprise a first crystalline silicon battery piece and a second crystalline silicon battery piece, the light facing surface of the first crystalline silicon battery piece is provided with a first connecting piece, and the backlight surface of the second crystalline silicon battery piece is provided with a second connecting piece; the first connecting piece comprises a first electrode grid line, the first electrode grid line is electrically connected with the light-facing surface of the first crystalline silicon battery piece, the second connecting piece comprises a second electrode grid line, the second electrode grid line is electrically connected with the backlight surface of the second crystalline silicon battery piece, and the first connecting piece and the second connecting piece extend in opposite directions so as to be connected with each other; and the first electrode grid line is in contact connection with the second electrode grid line. The electrode grid lines between the two crystal silicon battery pieces are directly connected, so that no welding strip is needed for connection, the shading influence caused by the welding strip can be avoided, and the power of the module is improved.

The invention belongs to the field of photovoltaic modules, and discloses a perovskite crystalline silicon laminated photovoltaic module and a preparation method thereof.The photovoltaic module comprises front plate glass, and a top cell perovskite layer, a first adhesive film layer, a bottom cell crystalline silicon cell layer, a second adhesive film layer and back plate glass are sequentially laid on one side of the front plate glass; the edges of the top cell perovskite layer, the first adhesive film layer, the bottom cell crystalline silicon cell layer and the second adhesive film layer are wrapped and sealed through a composite frame, the composite frame comprises a substrate with the wall thickness of 0.1-2mm, the surface of the substrate is provided with an anodic oxide layer with the thickness of 4-6mu m, and the surface of the anodic oxide layer is covered with a polyimide layer with the thickness of 30-1mm. The laminated photovoltaic module adopts the composite frame to replace the existing butyl rubber for sealing, so that the metalized edge sealing is perfectly fused into the low-temperature laminating process, the sealing performance is superior to that of the butyl rubber, and the service life of the laminated photovoltaic module is prolonged.

The utility model discloses a perovskite and crystalline silicon cell laminated structure, which comprises a bottom cell and a top cell which are laminated, the bottom cell is a crystalline silicon cell, the top cell is a perovskite cell, the crystalline silicon cell comprises a crystalline silicon substrate, a tunneling oxide layer and a doping layer, and the tunneling oxide layer and the doping layer are sequentially arranged upwards from the crystalline silicon substrate. The front surface of the tunneling oxide layer is divided into a first region and a second region, and the doping layer correspondingly covers the first region; the laminated structure further comprises a transparent conductive film layer. According to the utility model, on one hand, through regional distribution of the doping layer, a field passivation effect can be achieved, recombination is reduced, unnecessary parasitic absorption is reduced, and optical loss is effectively reduced; and on the other hand, the transparent conductive film layer is arranged, so that the crystalline silicon cell is compatible with the perovskite cell, the thickness of the doping layer can be remarkably reduced, the preparation cost of the cell is effectively reduced, in addition, efficient combined utilization of solar spectrum and superposition of open-circuit voltage are realized, and the photoelectric conversion efficiency is greatly improved.

The invention provides a silicon / perovskite / GaInP three-junction laminated solar cell and a preparation method thereof, and belongs to the technical field of solar cells. The cell adopts a multi-layer stacked structure and sequentially comprises a GaInP cell, a transparent conductive adhesive, a perovskite top electrode, an anti-reflection layer, a transparent conductive electrode, an electron transport layer, a perovskite layer, a hole transport layer, a silicon cell and a back electrode from top to bottom. The GaInP cell is mechanically stacked and integrated with the lower perovskite / silicon cell through the transparent conductive adhesive, spectrum splitting and current matching are completed on the premise of not depending on epitaxial growth, the solar spectrum absorption range is remarkably widened, and the photon utilization rate is improved. According to the cell structure and the preparation method provided by the invention, the perovskite / silicon / gallium indium arsenide three-junction laminated solar cell which is efficient, stable and flexible and can be prepared in a large area can be realized.

The invention relates to a method for separating photovoltaic modules by adopting an external field coupling technology, and belongs to the field of organic chemical industry and the field of efficient cyclic utilization of secondary resources. The method comprises the following steps: placing the retired photovoltaic module and an organic solvent in a dynamic fluid circulation system for layering treatment, wherein a physical field is arranged outside the dynamic fluid circulation system; the dynamic fluid circulation system controls the organic solvent to circularly flow on the surface of the decommissioned photovoltaic module and complete layering of the decommissioned photovoltaic module under the action of an external physical field, and then waste liquid and solids are obtained through solid-liquid separation; the solid comprises glass, a crystalline silicon cell and a back plate; the external physical field comprises at least one of an ultrasonic field, a microwave field and an electromagnetic field. According to the method, external physical fields such as ultrasonic waves, microwaves or electromagnetic fields are introduced to cooperate with the chemical action of the organic solvent and the dynamic fluid circulation system, so that the stripping efficiency of the EVA packaging layer and the photovoltaic module is improved, complete recovery of glass, crystalline silicon battery pieces and back plates can be ensured, and meanwhile, the method is low in energy consumption and high in efficiency.

The invention belongs to the technical field of metal resource recovery and reutilization, and particularly relates to a selective recovery method for valuable metal in a retired crystalline silicon cell photovoltaic welding strip. The method comprises the following steps: disassembling a photovoltaic solder strip from a retired crystalline silicon cell, and removing impurities from the photovoltaic solder strip to obtain a clean solder strip; adding the clean welding strip into an acetic acid solution, heating and stirring to fully react, and filtering to respectively obtain filter residues, copper strips and lead-containing filtrate; adding a precipitant into the lead-containing filtrate to carry out precipitation reaction, and after the reaction is finished, carrying out solid-liquid separation, washing and drying to obtain a lead sulfate product; washing and drying filter residues to obtain a tin dioxide crude product; and washing the copper bar with absolute ethyl alcohol, and drying to obtain the metal copper bar with the purity not lower than 99.0%. The method has the advantages of high metal separation efficiency, high recovery rate, low energy consumption, low acid and alkali consumption, difficulty in causing secondary environmental pollution and the like, and provides a feasible solution for selective separation and recovery of valuable metals of retired photovoltaic modules.

The utility model provides an electrode structure of a crystalline silicon cell. The electrode structure comprises a silicon wafer, a plurality of thin grid lines which are arranged on the surface of the silicon wafer in parallel, gradual change lines which are arranged on the surfaces of the thin grid lines, a plurality of anti-breaking grids which are respectively arranged on the surfaces of the thin grid lines, and a plurality of welding extension lines which are respectively arranged on the surfaces of the thin grid lines. According to the crystalline silicon battery electrode structure provided by the utility model, the plurality of fine grid lines are matched with the plurality of gradual change lines, the plurality of anti-breaking grids and the plurality of welding extension lines, and the design of a main grid is canceled, so that the shading area of the battery is increased, the generating capacity of the battery is increased, the cost of silver paste used for printing the main grid is reduced, and the production efficiency is improved. And the manufacturing cost of the crystalline silicon cell is reduced.

The invention provides low-temperature sintered silver-copper slurry, a perovskite laminated cell and a preparation method, and belongs to the technical field of crystalline silicon cells. The low-temperature sintered silver-copper paste comprises the following components in parts by mass: 15-30 parts of silver powder; 63-77 parts by mass of silver coated copper powder; the surface of the silver-coated copper powder is coated with acrylic acid and an oleylamine coating agent; 3-15 parts by mass of a resin; 0.2 to 2.8 parts by mass of a curing agent; 0.05 to 0.5 part by mass of a leveling agent; and 0.05 to 0.5 part by mass of a dispersant. The present disclosure achieves low temperature (llt; in addition, the silver-coated copper powder and the silver powder are mixed, the silver powder is replaced with low cost, the material cost is reduced, meanwhile, the silver-coated copper powder forms a three-dimensional conductive network at the low temperature of less than 120 DEG C through metal bonding of a silver shell and contact between particles, and the high conductivity of the electrode is ensured.

[Problem] To provide a method for reusing, by a simple method, a silicon cell separated from a solar panel. [Solution] Provided is a method for recovering monocrystalline silicon or polycrystalline silicon from a solar panel, the method being characterized by: separating monocrystalline silicon or polycrystalline silicon from a waste solar panel; thereafter, washing the surface of the separated monocrystalline silicon or polycrystalline silicon with an acid; and crushing the monocrystalline silicon or polycrystalline silicon, of which the surface has been washed with an acid, to an average particle diameter of 0.5-5.0 μm in the presence of a dispersion medium containing an alcohol.

The invention provides a crystalline silicon cell and a manufacturing method thereof, the crystalline silicon cell comprises an N-type silicon substrate, a tunneling oxide layer, an N + poly layer, AIOx / SiNx, a silver metal electrode, a P + layer and an aluminum metal electrode, and the manufacturing method of the crystalline silicon cell comprises the following operation steps: S1, double-sided cleaning and texturing: adopting an N-type silicon wafer with the size of 182.2 * 183.75, cleaning and texturing the surface of the silicon wafer with alkali, and cleaning and texturing the surface of the N-type silicon wafer with the size of 182.2 * 183.75; s2, phosphorus doping is carried out, an N + layer is formed, a thin oxide layer is deposited firstly, and then phosphorus doping is completed through a low-pressure diffusion furnace. According to the crystalline silicon cell and the manufacturing method thereof, the use amount of silver paste is reduced by about 35% through texturing, phosphorus doping, laser patterning, etching alkali polishing, boron diffusion, cleaning, atomic layer deposition, front and back anti-reflection layer preparation, silk-screen printing and laser-assisted sintering and through a cell back aluminum grid line laser induction process.

A silicon wafer texturing method and a textured silicon wafer. The texturing method includes: forming a pyramid textured surface on a silicon wafer; then carrying out a rounding treatment on the pyramid textured surface to form a rounded pyramid-shaped structure; and then forming pits on the rounded textured surface to finish the texturing, wherein the rounding treatment includes: successively performing a first treatment and a second treatment in a first mixed solution and a second mixed solution, the first mixed solution including HNO3 and HF, a mass fraction of HNO3 being greater than a mass fraction of HF, the second mixed solution including HNO3 and HF, and a mass fraction of HNO3 being less than a mass fraction of HF. For the obtained pits, a density of the pits is 10 / cm2 to 100 / cm2, a width is 0.01 μm to 0.08 μm, and a depth is 5 nm to 50 nm.

The invention discloses a wind-driven wing sail type unmanned sailing boat, comprising: a boat body comprising a water surface part and an underwater part, the water surface part being provided with a deck, the deck being provided with a solar panel, the underwater part being provided with a keel and a rudder blade; the wing sail is connected with the ship body through a sail rotating mechanism and used for providing sailing driving force, the wing sail is of a symmetrical structure, and flexible solar panels are embedded in the left side face and the right side face of the wing sail; the rudder blade is connected with the ship body through a rudder shifting mechanism and used for controlling the course; and the energy storage and control module is arranged in the ship body and used for being connected with the solar panel, storing energy and controlling the sail rotating mechanism and the rudder rotating mechanism to operate. The wing sail skin of a carbon fiber / PVC three-layer sandwich structure is adopted and matched with the variable-cross-section carbon fiber rib plate, balance of light weight and flutter resistance is achieved, the double integration mode of the solar cell is adopted, the flexible solar panels on the two sides of the wing sail and the deck monocrystalline silicon cell form a complementary power supply network, the autonomous survivability is high, and the requirement for ocean sailing is met.

The utility model discloses a double-sided solar crystalline silicon cell module which comprises a bottom plate and further comprises an adjusting mechanism, the top of the bottom plate is provided with the adjusting mechanism, and the adjusting mechanism comprises a supporting rod, a connecting plate, a rotating shaft A, a frame, an inserting hole, a spring A, an inserting rod, a back plate, a crystalline silicon cell piece, an EVA film, tempered glass and a polycarbonate plate. The two sides of the top of the bottom plate are both vertically and fixedly connected with supporting rods, the tops of the supporting rods are both provided with connecting plates, when a user is about to enter severe weather environments such as sand, dust, wind and snow, inserting rods can be pulled out of the surfaces of the connecting plates, then the frame is turned over along a rotating shaft A, one side of a polycarbonate plate faces upwards, a photovoltaic module on the other side is used for power generation, and although the light transmittance is reduced, the photovoltaic module is not damaged. However, the photovoltaic module has high strength and excellent impact resistance, can reduce the influence of the external environment on the photovoltaic module in the frame, protects the normal use of the photovoltaic module, adopts a double-sided structure, adapts to different working environments by different surface layers, and reduces the maintenance of the photovoltaic module.

The invention discloses a benzotriazole light conversion material, a preparation method and application of the benzotriazole light conversion material in preparation of a solar cell packaging film. When a light conversion packaging film formed based on the benzotriazole light conversion material is attached to an organic solar cell, a dye-sensitized solar cell, a crystalline silicon solar cell, a perovskite solar cell and a laminated cell composed of the perovskite cell and the crystalline silicon cell, the ultraviolet stability of the solar cell can be improved; and the power conversion efficiency of the solar cell can be maintained.

The invention belongs to the field of laminated cells, and relates to a perovskite laminated cell and a preparation method thereof, light parasitism can be reduced, the perovskite laminated cell comprises a bottom crystalline silicon cell, the bottom crystalline silicon cell comprises a substrate, the substrate comprises a first surface and a second surface which are opposite, a first tunneling oxide layer is arranged on the first surface, and a second tunneling oxide layer is arranged on the second surface. A first passivation layer is arranged on the first tunneling oxide layer, or a first doped crystalline silicon conductive layer and the first passivation layer are arranged on the first tunneling oxide layer, and the first doped crystalline silicon conductive layer is provided with a plurality of first opening regions exposing the first tunneling oxide layer or the substrate; the first passivation layer covers the surface of the first doped crystalline silicon conductive layer and the surface of the first opening region; and the top perovskite cell is arranged on the first passivation layer and is electrically connected with the bottom crystalline silicon cell.

The invention provides an ultralight crystalline silicon solar photovoltaic cell, and relates to the technical field of photovoltaic cells, the ultralight crystalline silicon solar photovoltaic cell comprises a first silica gel packaging material, a crystalline silicon cell piece, a welding strip and a second silica gel packaging material, the crystalline silicon cell piece is arranged above the first silica gel packaging material, the welding strip is arranged above the crystalline silicon cell piece, and the second silica gel packaging material is arranged above the second silica gel packaging material. The second silica gel packaging material is arranged above the welding strip; the first silica gel packaging material and the second silica gel packaging material are used for packaging the crystalline silicon cell piece, a conventional scheme of adding a glue film to glass or other light front back plates is replaced, the ultra-light crystalline silicon solar cell which is low in cost, high in efficiency, ultra-light, flexible and wide in temperature range adaptability is achieved, and the ultra-light crystalline silicon solar cell is suitable for being applied to the fields of near space, satellites and the like; the high-efficiency and light-weight characteristics of the crystalline silicon battery are considered, the power mass ratio is higher, the cost is low, silica gel is used for packaging the battery, the wide-temperature-range adaptability is guaranteed, and the battery passes a TC400 cold and hot cycle test.

The invention discloses a TBC crystalline silicon cell doped on the back step by step and region and a preparation method of the TBC crystalline silicon cell. The preparation method comprises the steps that an N-type monocrystalline silicon substrate is provided, the substrate comprises a front face and a back face, annealing treatment is carried out on the back face in a partitioned and step-by-step mode, and doping activation of independent areas is carried out; preparing a textured structure with pyramid morphology on the front surface of the N-type monocrystalline silicon substrate to enhance the light trapping effect; and performing a metal slurry screen printing process on the first region and the second region, performing high-temperature sintering, forming a metal electrode in contact with the first doping layer in the first region, forming a metal electrode in contact with the second doping layer in the second region, and preparing the TBC crystalline silicon battery. According to the invention, the technical problems of incompatibility of boron and phosphorus doped region doping processes, increase of the complexity of a process route, influence on the cell performance and the like in the prior art can be solved, the open-circuit voltage and the fill factor of the cell can be effectively improved, and the photoelectric conversion efficiency of the TBC crystalline silicon cell is improved.

The invention relates to the technical field of passivation contact crystal silicon cell manufacturing, in particular to a passivation contact crystal silicon cell annealing temperature control method and system, and the method comprises the following steps: obtaining the operation parameters of an annealing furnace and the thermal load information of a silicon wafer; evaluating a response delay characteristic of the temperature control loop; on the basis of the operation parameters, the thermal load information and the response delay characteristics, predicting the transient temperature overshoot risk of the surface of the silicon wafer by using predetermined overshoot risk prediction parameters to obtain a prediction result; according to the prediction result, the heating power is adjusted before overshoot occurs; by acquiring the operating parameters of the annealing furnace and the thermal load information of the silicon wafer and evaluating the response delay characteristic of the temperature control loop, the real-time state in the hearth and the thermal response condition of the silicon wafer can be comprehensively mastered.

The application discloses a multifunctional intelligent photovoltaic window which is assembled by a multifunctional variable color unit and a silicon solar cell, and has the characteristics of wide wave adjustment, self-driving and self-cleaning. The laminated structure multifunctional variable color unit mainly comprises a vanadium dioxide / silicon dioxide / polyurethane nanocomposite film, a polymer stable liquid crystal with a near-crystal-cholesteric phase transition, an indium tin oxide and a silicon dioxide coating, which are respectively used as a near-infrared light adjusting layer, a visible light adjusting layer, an electrothermal layer and a super-hydrophobic layer. Based on the above design, the intelligent photovoltaic window can realize dynamic adjustment of the transmittance in the wavelength range of 380-2500 nm, so that the ideal energy-saving effect is achieved. In combination with the high output power of the silicon cell and the excellent direct current heating effect of the indium tin oxide, the self-driving characteristic of the intelligent photovoltaic window is realized, and the energy-saving effect is further improved. In addition, the silicon dioxide super-hydrophobic coating with a contact angle of 150-160 degrees effectively solves the environmental dependence of the intelligent photovoltaic window, and the intelligent photovoltaic window also has a good vision under complex weather conditions such as rain and snow. The application can widen the application of the intelligent photovoltaic window in the fields of energy-saving buildings, automobiles and flexible photoelectric devices.

The utility model discloses a crystalline silicon cell photovoltaic assembly, which comprises light receiving glass, a first adhesive film, a crystalline silicon cell, a second adhesive film and back plate glass which are sequentially arranged from top to bottom, the crystalline silicon cell comprises a plurality of cell strings, the cell strings are arranged into an array, bus bars are arranged at the two ends of the array, and the bus bars are arranged on the back plate glass. The bus bar is electrically connected with the battery string, a first color matching layer is arranged between the bus bar and the battery string, and the upper surface of the bus bar is covered with a second color matching layer. According to the crystalline silicon cell photovoltaic assembly provided by the utility model, the problem of chromatic aberration between the crystalline silicon cell and the bus bar is solved through the first color matching layer and the second color matching layer, and meanwhile, the surface of the bus bar and the surface of the welding strip between the bus bar and the cell string are insulated, so that short circuit caused by contact between the bus bar and the cell string is prevented.

The invention provides a method for recovering precious metal silver from an out-of-service photovoltaic module, and belongs to the field of resourceful treatment of solid waste in the photovoltaic industry. The method comprises the following steps: placing a crystalline silicon cell in the retired photovoltaic module in a protective gas atmosphere, introducing a reducing gas into the protective gas atmosphere, and carrying out heat treatment at 700-900 DEG C for 1-3 h; and stripping the silver gate electrode on the surface of the crystalline silicon battery piece after heat treatment. According to the scheme, the silver gate electrode can be separated from the crystal silicon battery piece by optimally designing the heat treatment conditions of the crystal silicon battery piece, various acidic and alkaline reagents are not needed, and the technological process is simple.

The invention discloses a recycling system and method for a photovoltaic module, and belongs to the technical field of harmless and resource treatment of retired photovoltaic modules. The recovery processing system of the photovoltaic module comprises a pyrolyzing furnace, a wet steam oxidation furnace and a cooling furnace, a discharge port of the pyrolyzing furnace is connected with a feed port of the wet steam oxidation furnace, and a discharge port of the wet steam oxidation furnace is connected with a feed port of the cooling furnace; molten salt heating pipes are arranged in the pyrolyzing furnace in the circumferential direction. The invention further provides a photovoltaic module recycling method which comprises the following steps: conveying the photovoltaic module into the pyrolyzing furnace, and staying at 450-550 DEG C for 20-40 minutes; then the photovoltaic module enters a wet steam oxidation furnace, the temperature of water vapor is 200-250 DEG C, and the photovoltaic module stays for 20-40 min; and then the photovoltaic module enters the cooling furnace to be cooled and output. The system provided by the invention can realize separation of a large complete glass plate and a high-quality silicon battery piece.