163 results about "Building-integrated photovoltaics" patented technology

Improved photovoltaic devices, and more specifically, improved building integrated photovoltaic devices are described herein. In one embodiment, the photovoltaic roofing structure may be comprised of a roofing tile having a top surface, a bottom surface, and a recessed portion; a photovoltaic module sized to fit within the recessed portion of the roofing structure.

Improved building-integrated photovoltaic systems according to certain example embodiments may include concentrated photovoltaic skylights or other windows having a cylindrical lens array. The skylight may include an insulated glass unit, which may improve the Solar Heat Gain Coefficient (SHGC). The photovoltaic skylight and lens arrays may be used in combination with strip solar cells. Arrangements that involve lateral displacement tracking systems, or static systems (e.g., that are fixed at one, two, or more predefined positions) are contemplated herein. Such techniques may advantageously help to reduce cost per watt related, in part, to the potentially reduced amount of semiconductor material to be used for such example embodiments. A photovoltaic skylight may permit diffuse daylight to pass through into an interior of a building so as to provide lighting inside the building, while the strip solar cells absorb the direct sunlight and convert it to electricity, providing for SHGC tuning.

The invention discloses a transparent back plate for a solar cell module. The transparent back plate for the solar cell module is composed of a base layer, a weather-proof coating coated to the surface of the base layer, and an adhesive layer coated to the other surface of the base layer. The weather-proof coating is 30 mu m-50 mu m in thickness and composed of fluorine-containing resin, a curing agent, modified resin, a curing agent accelerator, fillers, an additive and solvent. The adhesive layer is 5 mu m-10 mu m in thickness and composed of matrix resin, a curing agent, a modified resin, a curing agent accelerator, fillers, an additive and solvent. The transparent back plate can ensure the high light transmittance and adjust the degree of haze as needed as well as can meet the needs of building-integrated photovoltaic (BIPV) and bifacial photovoltaic power generation components.

The invention belongs to the field of photoelectricity and building materials, in particular to a BIPV (Building Integrated Photovoltaics) solar module and a manufacture method thereof. The BIPV solar module comprises glaze super white tempered glass, a plurality of tiled, arrayed and connected double-side crystalline silicon solar cells and ordinary glaze tempered glass which are sequentially arranged from top to bottom, wherein the double-side crystalline silicon solar cells are packaged between the glaze super white tempered glass and the ordinary glaze tempered glass by adopting a PVB (Polyvinyl Butyral) adhesive film, and all groups of double-side crystalline silicon solar cells are connected through solar curtain junction box strings. In the BIPV solar module and the manufacture method thereof, both sides of the BIPV solar module can accept sunlight, thereby the generating power of a system is indirectly improved, and meanwhile, the method has simple process and low improved cost and can avoid adverse phenomena of bubbles, displacement, cracks, atomization, and the like. The BIPV solar module can be applied to building guardrails comprising curtains, roofs, car roofs, road sound insulation guardrails, and the like and realizes BIPV.

The invention discloses a partially transparent photovoltaic window, which comprises a membrane silicon photovoltaic template arranged on a glass substrate. The photovoltaic template is separated from another glass substrate by a vacuum space; a sealed energy conservation structure with high thermal insulation is formed by the two glass plates; the structure also has the function of a solar cell. The partially transparent photovoltaic window is very suitable for building integrated photovoltaic (BIPV) application.

The invention relates to a novel photovoltaic component for a building. The novel photovoltaic component for the building comprises a photovoltaic module, connectors, a junction box, a frame, filling material and a component back plate. The junction box, the connector part stretching into the frame, a metal back plate of the photovoltaic module, the frame and the component back plate are bonded to form an integral module through the filling material. Due to the novel photovoltaic component, the heat preservation performance of the building is achieved, the problem of heat dissipation of a heat generating device in the junction box of the photovoltaic module is solved, influences caused by the hot spot effect are reduced, and meanwhile the insulation problem brought by using the metal back plate is solved. Besides, due to the standard modular structure design, the novel photovoltaic component for the building is convenient to install and maintain, and the integration of the photovoltaic building is achieved. A honeycomb core layer and a honeycomb pore plate are omitted in the structure, one the premise that the structural strength is guaranteed, material cost is reduced, and the technology is relatively simple. Because the L-type connector and the U-type connector can be used in cooperation, the novel photovoltaic component for the building can be detached independently and is convenient to maintain.

Described herein are transparent solar energy collection systems that comprise at least one holographic optical element, a transparent waveguide concentrator, and at least one solar energy conversion device.

The invention provides a solar aluminium alloy window comprising a window frame, a transmission mechanism, a revolving mechanism and a solar power supply unit. The transmission mechanism comprises a motor and worms, and the worms connected with the motor are in series connection. The revolving mechanism comprises worm gears, a revolving shaft and window sashes, the worm gears are meshed with the worms, the revolving shaft is connected with the worm gears, and the window sashes are fixedly mounted on the revolving shaft. The solar power supply unit comprises solar panels, a first light sensor and a processing unit, wherein the solar panels, the first light sensor and the processing unit are connected in sequence, and the processing unit is electrically connected with the motor. The first light sensor transmits detected optical signals to the processing unit which controls the revolving shaft to rotate through the motor, so that light acceptance angles of the solar panels can be adjusted. The solar aluminum alloy window simple and integral in structure can be installed in any houses with solar energy effectively utilized. The solar aluminum alloy window is attractive and practical and green, part of the electricity demand can be met, so that building integrated photovoltaics can be realized.

A direct current (DC) power system uses High Concentration Photovoltaic (HCPV) modules and Building-Integrated Photovoltaic (BIPV) module. Power outputs of the HCPV/BIPV modules are mixed to improve utilization of generated power. Thus, solar power is used through best power control and energy conservation.

The invention discloses a narrow-channel double-layer ventilation external wall utilizing photovoltaic power generation, and belongs to the technical field of solar power generation BIPV (building integrated photovoltaics). The external wall comprises a solid wall (6) and a solar cell panel (1) which is fixedly connected with the outer side of the solid wall (6) through a chemical anchor bolt (3), wherein a cavity (5) is reserved between the solid wall (6) and the solar cell panel (1); an air outlet is formed above the cavity (5) and is provided with an air outlet valve (7); and an air inlet is formed below the cavity (5) and is provided with an air inlet valve (8). Aiming at the BIPV manner combining the solar cell panel and the external solid wall, one cavity is reserved between the solar cell panel and the external solid wall, and the heat yield in a power generation process of the solar cell panel is taken away through forced ventilation of a direct current fan, so that the heat radiation effect on external walls of buildings is reduced.

The invention discloses a multi-path MPPT (maximum power point tracking) circuit and a solar photovoltaic inverter, and relates to the technical field of solar power generation. The multi-path MPPT circuit comprises multiple MPPT branch circuits, wherein each MPPT branch circuit is provided with two input ends and two output ends; energy storing units (1) and rectifying units (2) are arranged between first input ends and first output ends, and first ends of the energy storing units (1) are connected with the first input ends; first ends of the rectifying units (2) are connected with the first output ends, second ends of the energy storing units (1) are connected with second ends of the rectifying units (2), and the joint is connected with a first end of a switching tube unit (3); and a second end of the switching tube unit (3) is connected with second input ends and second output ends respectively. The multi-path MPPT circuit provided by the invention is provided with the multiple MPPT branch circuits which are connected in parallel, the appropriate conduction time of the switching tube is selected according to the conditions of the multiple MPPT branch circuits, MPPT points of the branch circuits are consistent, the construction difficulty is reduced, and the generating efficiency of a BIPV(building integrated photovoltaics) system is exerted to the maximum.

Improved building-integrated photovoltaic (BIPV) systems according to certain example embodiments may include concentrated photovoltaic skylights or other windows in which holographic optical elements (HOEs) are provided. The HOEs are formed on or in a substantially planar glass substrate, e.g., at light coupling locations, and they help form a holographic projection of light in a desired wavelength range on a photovoltaic module. The photovoltaic module may, for example, be connected to an outer edge of the substrate in certain example embodiments. Holographically projected light may propagate through the substrate in accordance with the principles of total internal reflection (TIR), which may be somewhat lossy in some cases. A lens provided between the light source (e.g., the sun) may help re-orient the light in a desired direction so as to improve the efficiency of the HOEs.

The invention discloses an embedded photovoltaic roof assembly and its installation structure on the roof, which is suitable for the field of photovoltaic building integration. When the photovoltaic module of the present invention is installed on the roof, no additional module support bracket is needed, but the male and female buckle structure design of the module frame is used, and the two buckles are arranged to facilitate the connection between the photovoltaic modules. There are diversion grooves and drainage grooves on the top; the connection between the components and the roof is arranged directly by relying on hooks, without conventional aluminum alloy or steel brackets; the connection between the embedded roof component structure and the tiles is laid with stainless steel drainage components and waterproof membrane transitions connect. The embedded photovoltaic roof assembly of the present invention can directly replace roof tiles, not only has the advantages of convenient processing and beautiful appearance, but also has simple construction, convenient installation, reduces the weight of the photovoltaic system, and can more comprehensively apply photovoltaic modules to integrated photovoltaic buildings in the chemical field.

The invention discloses a method for producing transmittance monocrystal silicon solar batteries used in building integrated photovoltaic. The method comprises: dividing a monocrystal silicon rod into fragments; cutting a transmittance hole, and corroding the wall of the transmittance hole; obtaining a heterojunction by diffusion; removing a diffusion layer around a wafer and the transmittance hole; removing phosphorosilicate glass; producing a reflection deducting coating; producing electrodes; and obtaining monocrystal silicon solar batteries with the transmittance hole. The monocrystal silicon solar batteries can produce two-glass photovoltaic-building components, can be connected but no transmittance gap, can realize transmittance through the transmittance hole, can make two-glass photovoltaic-building components look more beautiful and can be applied commercially on a large scale in the field of building integrated photovoltaic.

The invention discloses a transparent back film for a solar cell. The transparent back film comprises a weather-resistant layer, a bonding layer, an electrical insulating layer and an adhesive layer, which are compounded into a whole, wherein the bonding layer is coated on one surface of the electrical insulating layer; and the adhesive layer is coated on the other surface of the electrical insulating layer; and the weather-resistant layer is compounded on the outer surface of the bonding layer. The transparent back film has a simple structure, is low in cost, high in interlayer adhesive strength and good in electrical insulating property, can ensure the 25-year service life of the solar cell assembly, and can be extensively applied to building integrated photovoltaics (BIPV), a double-faced photovoltaic power generation assembly and the like.

Luminescent solar concentrators having a grid-based PV design can be implemented in many different ways. In several embodiments, the LSC is implemented using infrared luminophore technology combined with a PV design implementing a grid of PV cells. LSCs can incorporate quantum dots that absorb uniformly across the visible spectrum and photoluminesce down-shifted energy light in the infrared wavelength regime. Some embodiments include PV cells utilizing micro-grid structures that can be implemented for scalable and controllably transparent applications, such as but not limited to power windows targeted for building integrated photovoltaic applications. In a number of embodiments, the LSCs can utilize a unique PV cell form factor and spectral filter coatings to increase the thermal insulation of the window and enhance photocurrent capture by a silicon micro-grid.

The invention discloses a positive pressure encapsulation device of a building integrated photovoltaics (BIPV) solar energy component. The positive pressure encapsulation device comprises a portal frame and a delivery mechanism penetrating through the portal frame, wherein an upper heating plate and a lower heating plate are arranged on the portal frame and connected with corresponding oil heaters, the lower heating plate is provided with a plurality of cambered surface type ejector pins, each cambered surface ejector pin is connected with an air cylinder, the upper surface of the upper heating plate is connected with an upper box, the upper surface of the upper box is connected with a plurality of hydraulic cylinders and connected with a hydraulic pressure station fixed on the top of the portal main frame, and the periphery of a matching end of the upper surface of the upper box and the lower heating plate is provided with an upper lining plate, a lower lining plate, a silica gel plate located between the upper lining plate and the lower lining plate, and an upper and a lower chambers which are formed by combining a silica gel strip inlaid on the upper surface of the upper lining plate with the silica gel plate. A double-glass battery component is simultaneously heated up and down, and is pressed positively, so that encapsulation requirements of a BIPV battery component with a large area and made of thick toughened glass are satisfied.

The invention, which belongs to solar cell sheet producing technology field, specifically relates to a manufacturing method of a solar cell sheet with color patterns. The manufacturing method comprises the following steps: pasting a high-temperature resistant adhesive tape possessing specific hollow out patterns on a silicon chip with a passivation antireflection film; then carrying out again deposition of the antireflection film or a color modulation film; finally removing the high-temperature resistant adhesive tape so as to form the color patterns which are corresponding to the hollow out patterns on the adhesive tape. The method of the invention has good controllability, good repeatability and high flexibility. The application of the method can make the solar cell sheet to satisfy a beautiful demand in building integrated photovoltaics.

The invention relates to a building integrated photovoltaics shutter external sunshade system and belongs to the field of building energy conservation and photoelectric utilization. The shutter external sunshade system is composed of a PV sunshade shutter, a linkage rod, a fixed frame and a motor. The PV sunshade shutter is a packaged solar photoelectric device and comprises glass, a battery piece, an EVA adhesive film and a TPT plate. Fixed holes are reserved at the two ends of the PV sunshade shutter, the PV sunshade shutter is connected to the fixed frame through the fixed holes and a movable shaft, and the fixed frame is fixedly connected to the building outer wall. The motor drives the linkage rod by means of electric energy provided by a photovoltaic cell, and the angle of the PV sunshade shutter is adjusted. The building integrated photovoltaics shutter external sunshade system can be arranged on the building outer wall and the outer side of a window to form a new building facade image, plenty of sunlight radiant heat can be effectively blocked, the building integrated photovoltaics shutter external sunshade system has functions of sunshade and heat insulation, the goals of power generation, heat insulation and energy saving are achieved, building energy consumption is reduced, and the building integrated photovoltaics shutter external sunshade system is an efficient and energy-saving movable external sunshade system.

The invention discloses a wind power generation building wallboard and a construction method. The module and the method are designed by relying on design experience and design concepts of building integrated photovoltaics (BIPV) of a research and development team, and taking firstly disclosed building integrated wind power (BIWV) as a guide concept. The wind power generation building wallboard is characterized by consisting of a module bracket (1), an air inlet (2), an air collecting channel (3), a heating insulation plate (4) and a generator (5). A rod hanging-type construction installation method is adopted. In the wind power generation building wallboard, due to the adoption of a modular design concept, the passive collection in the utilization of wind energy which is difficult to capture is changed into more active collection and gathering. In addition, due to the combination of energy-saving and heat-insulation materials of buildings and wind energy collection, the structure is simple, the cost is low, the module is easy to maintain, and energy-saving coefficients of energy-saving buildings are increased. The structure of the module has an additional effect of absorbing urban noises.

The invention discloses a pitched roof building integrated photovoltaics mounting structure. The pitched roof building integrated photovoltaics mounting structure comprises a photovoltaic support and solar photovoltaic panels, wherein the solar photovoltaic panels are arranged on the photovoltaic support; the photovoltaic support comprises supporting seats arranged at intervals and connecting pieces connected to the supporting seats; each supporting seat comprises a bottom plate, a shaft seat and a shaft hole; the shaft seats are arranged on the bottom plate; the shaft holes are formed in the shaft seats; each connecting piece comprises a first connecting end and a second connecting end; each first connecting end is connected with a round shaft which penetrates in the corresponding shaft hole; each second connecting end is opposite to the corresponding first connecting end, and is provided with a notch; mounting holes are formed in folded edges forming the notches; each solar photovoltaic panel comprises an upper panel body and a lower panel body; each lower panel body can overturn upwards around the corresponding upper panel body; and a flange inserted in the corresponding notch is arranged on each upper panel body. A roof is connected with the photovoltaic panels through the supporting seats and the connecting pieces. The photovoltaic panels and the connecting seats can overturn around shafts and then are mounted or dismounted conveniently and quickly. The photovoltaic panels are in lap joint in the vertical direction, are fastened with one another in the left-right direction, and have good water preventing and draining functions in the vertical direction.

The invention discloses a fireproof and water proof photovoltaic coiled material. The fireproof and water proof photovoltaic coiled material is of a layer-shaped structure and is composed of a waterproof coiled material lining and a flexible photovoltaic module from bottom to top, wherein a high-tenacity glass fiber reinforced flame retardant non-woven fabric is used as a base for the waterproof coiled material lining, flame-retardant polymer modified cement mortar is arranged on the two faces of the base through blade coating, and the solar photovoltaic module sequentially comprises a flexible thin-film photovoltaic cell pack, a film layer and a coating layer from bottom to top. The invention further discloses a method for preparing the fireproof and water proof photovoltaic coiled material. The method includes the following steps of firstly, preparing the waterproof coiled material lining; secondly, preparing the photovoltaic cell pack; thirdly, conducting combining and packaging. According to the fireproof and water proof photovoltaic coiled material, the laying and construction method is simple, the waterproof coiled material can be bonded to the roof of a building in a cold mode through polymer dry-mixed mortar bonders which have a fire prevention function, the fireproof and water proof photovoltaic coiled material is free of fire heating, environmentally friendly, easy to operate and low in comprehensive cost, and the building integrated photovoltaics which integrates multiple functions such as the waterproofing function, the fire prevention function, the decoration function and the photovoltaic power generation function is obtained.

Certain example embodiments relate to building integrated photovoltaic (BIPV) or building adapted photovoltaic (BAPV) systems and components thereof. In certain example embodiments a component includes an asymmetric glass substrate that includes at least first, second, and third surfaces. The third surface can be laminated to a photovoltaic sub-assembly. The first surface can structured to be angled away from a vertical plane of a building at an angle of between 5 and 40 degrees. The first surface may be longer than the second surface.

The invention relates to a photovoltaic building integral solar photovoltaic assembly, in particular to a breathing type hollow BIPV (building integrated photovoltaics) assembly. The breathing type hollow BIPV assembly comprises front glass (10), a solar cell group (11), base plate glass (12), a hollow layer (17) and back glass (13), wherein the front glass (10), the solar cell group (11), the base plate glass (12), the hollow layer (17) and the back glass (13) are sequentially stacked, a spacing strip (15) is arranged between the base plate glass (12) and the back glass (13) to form the hollow layer (17), the gap between the base plate glass (12) and the back glass (13), outside the spacing strip (15), is subjected to air sealing by a sealant (16), a terminal box (14) is arranged between the front glass (10) and the back glass (13), and the terminal box (14) is electrically connected with a wiring terminal of the solar cell group (11). The breathing type hollow BIPV assembly solves the problem of the hollow photovoltaic assembly that the glass is crushed due to overhigh pressure of the glass hollow layer in the power generation process in summer.