12355 results about "Solar cell" patented technology

Systems, methods, and articles for a portable power case are disclosed. The portable power case is comprised of at least one battery and at least one PCB. The portable power case is operable to supply power to a transceiver. The portable power case is operable to be charged using a DC power source (e.g., solar panel, wind turbine, water turbine). A plurality of portable power cases, DC power sources, and transceivers are operable to form a mesh network.

In various representative aspects, an assembly for securing array skirts and solar panel modules in an array on a roof by providing a leveling system that utilizes a leveling bolt and leveling nut to vertically adjust the assembly. Improved electrical bonding by utilizing bonding pins installed in mounting plates of a support clamp are also provided. Additionally, an improved array skirt design that is installed on the outer row of the array, as well as improved designs in the support clamp and splice mechanisms are also provided. Finally, an improved wire management system is included as well as a method of installation of the array assembly.

The invention is applicable to the field of photovoltaic technology, and provides a back contact solar cell, which comprises a silicon substrate, non-recessed areas and recessed areas are alternately arranged on the backlight surface of the silicon substrate, and the silicon substrate is provided with extending parts extending and protruding to the upper parts of the recessed areas at the edges of the non-recessed areas and the recessed areas; the first dielectric layer and the first polarity doping layer are sequentially stacked on the non-sunken region and the extension part; the second dielectric layer comprises a first part stacked on the first polarity doping layer and a second part stacked in the sunken region; the second polarity doped layer is stacked on the first portion and the second portion. Under the shielding effect of the extension part, the first polarity doping layer in the non-recessed area is effectively isolated from the second polarity doping layer in the recessed area, and electric leakage is avoided.

The invention discloses a back contact electrode structure, a back contact solar cell and a photovoltaic module, and belongs to the technical field of solar cells. The electrode structure comprises current collection electrodes, current collection electrodes, current collection points and current collection areas, the current collection electrodes extend in the first direction, and the current collection electrodes with different polarities are alternately designed at intervals in the second direction; the bus electrodes are distributed on the two sides of the battery substrate in the second direction, the bus electrodes with the same polarity are distributed on one side of the edge of the battery substrate, the bus electrodes with the other polarity are distributed on the other side of the edge of the battery substrate, and the bus electrodes with different polarities are distributed in an array mode in the first direction and are coupled with the part, extending in the first direction, of the collector electrodes with the same polarity; the collector electrodes at least partially extending in the first direction have a segmented design, and the length of the collector electrodes on the two sides of the battery substrate in the first direction is W1lt; and the other collector electrodes are W2 in length.

A solar panel mounting system can include a first panel mount including a first retaining feature attached to or attachable to a first torque tube clamp, and a second panel mount including a second retaining feature attached to or attachable to a second torque tube clamp. When the first and second panel mounts are mounted on a torque tube via the first and second torque tube clamps, respectively, the first retaining channel faces the second retaining channel, and the first and second retaining channels are oriented transversely relative to the torque tube. Furthermore, in this example, at least one of the first panel mount or the second panel mount is configured for overhead or lateral insertion of a solar panel while the torque tube clamps are installed on the torque tube.

The present disclosure relates to the technical field of back contact solar cells, and in particular relates to a combined passivation back contact solar cell having front wide band gap doping, and a preparation method therefor. The solar cell comprises a silicon wafer, and a first semiconductor layer, a second semiconductor layer and a third semiconductor layer arranged on the front face of the silicon wafer. The third semiconductor layer comprises a second tunneling oxide layer and a third doped polycrystalline silicon layer, provided in sequence from inside to outside. The third doped polycrystalline silicon layer is a doped polycrystalline silicon layer containing a first doping element and a second doping element, the first doping element being phosphorus, and the second doping element comprising any one of carbon and oxygen. Furthermore, the band gap width of the third doped polycrystalline silicon layer is ≥1.6eV. The present disclosure, while ensuring a passivation effect, can greatly decrease device investment costs, greatly reduce parasitic absorption of a third semiconductor layer on the front surface of a cell, and increase short-circuit current of the cell, thereby increasing cell conversion efficiency.

A solar panel mount includes a first plate, a mounting bracket, a mounting shaft, a fastener member, a mounting member, and a rotatably adjustable spacer. The first plate is configured to slide beneath a roofing tile. The first plate comprises at least one opening. The rotatably adjustable spacer is sized to be at least partially received in the mounting member when the mounting member receives the mounting shaft. The rotatably adjustable spacer is configured to receive the mounting shaft. The spacer is rotatably adjustable allowing for the entire solar panel mount to be raised and lowered so that the mount is completely flush with the roofing material, and further allowing the solar panel mount to withstand weather events and other forces.

The invention provides a manufacturing method of a back contact solar cell and the back contact solar cell, and belongs to the technical field of solar cells. The manufacturing method of the back contact solar cell comprises the steps that a semiconductor substrate is provided, the semiconductor substrate is provided with a first surface and a second surface which are opposite, the first surface is a textured surface or a plane, and the second surface is a plane; and a first carrier collection region, a second carrier collection region and an isolation region between the first carrier collection region and the second carrier collection region are arranged on the second surface of the semiconductor substrate.

The invention provides a back contact cell, a manufacturing method and a photovoltaic module, and belongs to the technical field of solar cells. The back contact battery comprises a semiconductor substrate, wherein a first surface of the semiconductor substrate comprises a first region and a second region which are alternately arranged along a first direction; the first semiconductor layer is at least partially arranged on the first region of the semiconductor substrate; the second semiconductor layer is at least partially arranged in the second area of the semiconductor substrate; the first electrode is arranged on the first semiconductor layer in the first region; the second electrode is arranged on the second semiconductor layer in the second region; the first semiconductor layer extends between the second semiconductor layer in the second region and the semiconductor substrate to form an overlapping part, and the second electrode covers at least part of the overlapping part; and / or, the second semiconductor layer extends to the first semiconductor layer in the first region to form an overlapping part, and the first electrode covers at least part of the overlapping part.

The invention is suitable for the field of photovoltaic technology, and provides an electrode structure of a back contact cell, a cell piece and a solar cell module, and the electrode structure comprises a main grid which is closest to a first edge of the back contact cell; the first connection grid line is connected with the main grid, the pad point and the main grid are arranged at intervals in the first direction, the first end of the second connection grid line is in electric contact with the pad point, the second end of the second connection grid line extends in the second direction, and the first direction intersects with the second direction. When the welding strip is arranged on the battery piece and connected with the pad point, the welding strip extends to the second connecting grid line, so that burrs on the edge of the welding strip are blocked by the second connecting grid line, the burrs on the edge of the welding strip are prevented from directly puncturing the insulating paste to be communicated with the opposite grid line, and the second connecting grid line plays a role in protecting the battery piece. The risk of local short circuit of the battery piece is avoided, and the yield of the battery piece can be effectively improved.

The utility model is suitable for the technical field of solar cells, and provides a back contact cell assembly and a photovoltaic system.The back contact cell assembly comprises a cell string, an insulating strip and a bus bar, the cell string comprises a plurality of cell pieces connected in series, the cell pieces are distributed in the first direction, the insulating strip is arranged on the backlight face of the cell pieces in the second direction, the first direction and the second direction intersect, the bus bars are arranged on the sides, away from the battery pieces, of the insulating strips in the second direction, and the insulating strips cover the bus bars. Therefore, the bus bar is hidden in the backlight surfaces of the plurality of battery pieces, and the bus bar cannot be observed from one side of the light receiving surface, so that the overall color of the front surface of the back contact battery assembly is uniform and beautiful. And meanwhile, the insulating strip can be arranged between the bus bar and the battery piece, so that the short circuit problem is avoided.

The invention relates to the technical field of solar cells, and provides a back contact cell assembly and a photovoltaic system.The back contact cell assembly comprises a plurality of cell strings and bus bars, a first welding strip comprises a body section, a bent section and an extending section, and the body section is welded to a first cell piece through a welding spot; the extension section extends between a second welding strip and a fourth welding strip which are adjacent to each other on the second battery piece and is at least partially overlapped with the bus bar so as to be welded with the bus bar, and the body section and the extension section are connected through a bending section; in the thickness direction of the back contact battery assembly, the extension section and the second welding strip do not have an overlapped part, and in the second direction, the distance D between the extension section of at least one first welding strip and the adjacent second welding strip meets the following relational expression: 1 mmlt; d < = 0.63 * arctan (1.8 * L * D2 + H) * (D1-W). Therefore, the hidden crack risk in the lamination process can be reduced, the electrical loss of the assembly can be reduced, the double-sided rate of the assembly can be improved, and the difficulty of the manufacturing process can be reduced.

The utility model relates to the technical field of solar cells, and provides a main-grid-free electrode structure, an IBC solar cell sheet, a cell assembly and a photovoltaic system, in the IBC solar cell sheet, a first connection grid line and a second connection grid line are arranged at a first disconnection area, the first connection grid line and the second connection grid line are not contacted with a first fine grid, and the second connection grid line is not contacted with a second fine grid. The first connecting grid line and the second connecting grid line are connected with the part, closest to the third edge, of the second fine grid, and the first end welding point is arranged between the first connecting grid line and the second connecting grid line and makes contact with the first connecting grid line and the second connecting grid line. Therefore, when the welding strip is subsequently welded with the first end part welding point, due to the arrangement of the first connecting grid line and the second connecting grid line, the risk of hidden cracks during welding can be reduced, the yield of the battery piece is improved, and meanwhile, the overall convergence of the second fine grid can be realized.

The invention provides a solar cell and a photovoltaic module, and relates to the technical field of photovoltaics. The solar cell includes a first surface and a second surface opposite to each other in a thickness direction thereof, and a side surface connecting the first surface and the second surface, the side surface including a cut surface and a non-cut surface; an inorganic passivation layer formed on the cutting surface; at least part of the inorganic passivation layer contains carbon elements. In the invention, on one hand, the inorganic passivation layer on the cutting surface is not easy to damage, and a good passivation effect of the inorganic passivation layer is maintained; and on the other hand, the inorganic passivation layer is easier to bond and chain with silicon and the like on the cutting surface, and the binding force with the cutting surface is better.

The invention discloses a solar cell and a manufacturing method thereof, and a photovoltaic module, and relates to the field of photovoltaic technology. The solar cell includes: a semiconductor substrate having a first surface including a first region and a second region; the second area comprises an edge area and a middle area, each of the edge area and the middle area comprises a step structure recessed towards the second surface, and the step depth of the step structure of the edge area of the second area is larger than that of the step structure of the middle area of the second area; and the first doping layer is arranged on the first region, and the height of the bottom wall of the step structure in the middle region of the second region is lower than that of the first doping layer. The first passivation layer is arranged on the side, away from the semiconductor substrate, of the first doping layer and arranged on the second area. According to the embodiment of the invention, the thickness along the splitting direction is reduced, so that the splitting difficulty is reduced, meanwhile, the recombination of current carriers is reduced, and the passivation effect is improved.

The invention provides a solar cell and a preparation method thereof, and a photovoltaic module, the rear surface of a semiconductor substrate is provided with a first region and a second region which are adjacent to each other, and the first region is provided with a first sub-region and first overlapping regions located at the two sides of the first sub-region; the first overlapping area is provided with a tunneling layer, a first doped conductive layer, a passivation layer, a second doped conductive layer and a first transparent conductive layer, the length of the first overlapping area in the first direction is D1, and the first direction is parallel to the surface where the semiconductor substrate is located; the rear surface of the semiconductor substrate is also provided with a third region and a fourth region which are adjacently arranged, and the third region is provided with a third sub-region and third overlapping regions located at the two sides of the third sub-region; the third overlapping region is provided with a tunneling layer, a first doped conductive layer, a passivation layer, a second doped conductive layer and a first transparent conductive layer, the length of the third overlapping region in the first direction is D2, and D1 is different from D2.

The invention relates to a texturing additive composition for a silicon wafer and a texturing solution. The texturing additive composition comprises the following components: 0.01-7.5 wt% of a nucleating agent; 0.05 to 5.5 wt% of an etching control agent; 0.0001 to 3.5 wt% of a dispersant; 0.0 to 2.0 wt% of a surfactant; 0.0 to 5.0 wt% of a pH conditioning agent; and water. The texturing additive composition and the texturing liquid can be matched with the special thin film deposition requirement of the heterojunction solar cell, and the synergistic effect of the components in the texturing additive composition can optimize the texturing structure combination on the basis of ensuring the texturing full rate, so that the texturing pyramid distribution is uniform, and the texturing quality is improved. And the apparent reflectivity of the surface of the silicon wafer is lower. The suede structure combination is beneficial to deposition of an amorphous silicon film in the next process of the heterojunction solar cell, and meanwhile, the suede structure combination has excellent light trapping performance.

The invention relates to a spinel multi-objective reverse design method based on machine learning and a Bayesian optimization algorithm, electronic equipment and a storage medium, and the design method comprises the steps: firstly extracting related data of a spinel material from a database, and constructing a balanced data set through preprocessing; feature engineering is carried out, a comprehensive feature set is constructed, and key features are reserved; then training a multi-target prediction model through hyper-parameter optimization by using a multi-task gradient elevator model; and finally, integrating to a Bayesian reverse design framework, expanding a design space through a specific encoder, and combining a Gaussian process proxy function and an expected hyper-volume improvement criterion to screen candidate materials meeting conditions and verify performance, thereby completing reverse design optimization. Compared with the prior art, the intelligent and efficient spinel novel multi-target reverse design method can be used for solving the problem of data scarcity, and development of high-performance spinel solar cell materials is accelerated.

The embodiment of the invention provides a solar cell and a preparation method thereof, and a photovoltaic module. In the embodiment of the invention, a first internal expansion layer with the same conduction type as a first doping layer and / or a second internal expansion layer with the same conduction type as a second doping layer are / is arranged in an interval region used for forming an isolation region on the back surface of a silicon substrate; and the first internal expansion layer and the second internal expansion layer are electrically connected, so that the field passivation effect can be realized, the recombination of minority carriers in the isolation region can be effectively reduced, reverse conduction can be realized when the battery piece is shielded, the breakdown can be avoided, and the hot spot prevention effect can be effectively realized.

A busbar-free electrode structure, IBC solar cell, and a photovoltaic system, used in the technical field of solar cells. Since first end welding points close to a third edge and disposed at a first break position are not connected to a first fine grid, but are electrically connected to a part of a second fine grid closest to the third edge, second fine grids close to a first edge can be connected together. On this basis, the first end welding points can be disposed, by means of the described electric connection manner, at a positions distant from the first edge of the silicon substrate, so that when a welding strip is subsequently welded to a first end welding point, because there is a relatively large distance between a disposed first end welding point and the first edge, the risk of hidden cracks during welding can be reduced, the cell yield can be improved, and overall convergence of the second fine grid can be achieved.

Disclosed are a back contact solar cell, a preparation method therefor, and a photovoltaic module, related to the technical field of photovoltaics. The back contact solar cell comprises a silicon substrate having a first surface, wherein the first surface comprises: a first conductive area, a second conductive area, and an insulating area located between the first conductive area and the second conductive area; a first transmission layer, located on the first conductive area and the insulating area; a barrier layer, located in the insulating area on the first transmission layer; a second transmission layer, located on the barrier layer and the second conductive area; and a transparent conductive layer, located on the second transmission layer and the exposed first transmission layer, wherein a part of the transparent conductive layer located in the insulating area is provided with an insulating opening, and the insulating opening electrically isolates the first transmission layer from the second transmission layer. Through the arrangement of the insulation opening, insulation reliability is better.

The invention relates to the technical field of solar cells, and particularly provides a four-end laminated cell module, preparation thereof and a photovoltaic module. The four-end laminated battery assembly comprises a bottom battery pack and a perovskite battery pack, the perovskite battery pack comprises a plurality of perovskite sub-batteries, and each perovskite sub-battery comprises a first electrode layer, a first transmission layer, a perovskite light absorption layer, a second transmission layer and a second electrode layer which are stacked in sequence; the perovskite sub-cell further comprises a first groove penetrating through the first electrode layer, a second groove penetrating through the first transmission layer, the perovskite light absorption layer and the second transmission layer, and a third groove penetrating through the second electrode layer. The total width of the second trench and the third trench is 500-770 [mu] m. According to the technical scheme of the invention, the optical distribution can be adjusted, and the optical performance of the module can be improved.

Provided are a solar cell, a method for preparing a solar cell, and a photovoltaic module, relating to the field of photovoltaics. The solar cell includes a substrate, a dielectric layer and a doped semiconductor layer which are stacked, a passivation layer, and electrodes. The substrate has a first surface. The first surface includes an edge region and a center region. The edge region surrounds the center region. The edge region is substantially flush with or closer to the second surface than the center region. The dielectric layer is formed over the center region. The passivation layer covers the edge region and a surface of the doped semiconductor layer facing away the dielectric layer. The electrodes are located in the center region, and penetrate the passivation layer in a thickness direction to be in electrical contact with the doped semiconductor layer.

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 solar cell and a photovoltaic module, and belongs to the technical field of solar cells. The solar cell comprises: a semiconductor substrate having a first surface and a second surface opposite to each other, and a plurality of first side surfaces adjacent between the first surface and the second surface; the passivation contact structure is at least located on a part of the first surface of the semiconductor substrate, and the passivation contact structure comprises an interface passivation layer and a first doped semiconductor layer which are stacked in sequence; wherein in the direction from the first surface to the second surface, the first side face comprises a first area and a second area which are adjacent in sequence, and the first area protrudes in the direction away from the first side face compared with the second area; the first doped semiconductor layer is further located on a part of the surface of the first region, and the first doped semiconductor layer located on the first region and the first doped semiconductor layer located on the first surface are integrally continuous; a portion of the surface of the first region adjacent to the second region is not covered with the first doped semiconductor layer.

The invention discloses a solar cell and a preparation method thereof. The solar cell comprises a semiconductor substrate, the semiconductor substrate is provided with a light receiving surface and a backlight surface which are oppositely arranged, and the backlight surface of the semiconductor substrate is provided with a first area and a second area; a tunneling dielectric layer and a first doping layer, wherein the tunneling dielectric layer and the first doping layer are sequentially stacked on the first region; the intrinsic passivation layer and the second doping layer are sequentially arranged on the second area in a stacked mode, the intrinsic passivation layer is made of intrinsic silicon, and the doping type of the second doping layer is opposite to that of the first doping layer; and the oxidation isolation layer is arranged between the first doping layer and the second doping layer and is used for isolating the first doping layer from the second doping layer in an insulating manner. The problem of electric leakage can be improved.

Disclosed is a disinfection lamp with an underwater light projection effect, comprising an upper lampshade, a lower lampshade, a lens lampshade and a tube for containing sustained release chlorine tablets, wherein a circuit board and a battery are arranged on the lens lampshade, a solar panel is mounted on the surface of the upper lampshade, a first light bead is arranged on the lower surface of the circuit board, a light diffuser is arranged at a position, corresponding to the first light bead, of a bottom of the lens lampshade, the first light bead is located in the light diffuser, and the lower lampshade is mounted at the bottom of the lens lampshade. The disinfection lamp can float on water, and the tube containing the sustained release chlorine tablets is immersed in water, such that a conventional water purification, sterilization and disinfection effect is realized.

The invention is applicable to the field of photovoltaic technology, and provides a solar cell, a cell assembly and a photovoltaic system.The solar cell comprises a silicon substrate, the silicon substrate is provided with a backlight face and a light facing face which are oppositely arranged, a plurality of grid lines and a plurality of microarrays are arranged on the backlight face side by side in the first direction, and the grid lines extend in the second direction; the microarray comprises a plurality of arranged microstructure units, an included angle is formed between the microarray and the grid line, and the first direction is crossed with the second direction; the length of the silicon substrate in the second direction is L, the range of the two side edges, parallel to the first direction, of the silicon substrate extending towards the center line by L / 9 is an edge area, the included angle in the edge area is alpha, the included angle in the area close to the position of the center line is beta, and the angle of alpha is larger than that of beta. The absorption path of light in the silicon wafer is increased, the diffuse reflection effect of reflected light of backlight surfaces in different areas is promoted, and therefore the absorption efficiency of the light is improved.

A laser-based system and method for cleaning solar panels that have accumulate dirt or grime. The laser-based system employs methods for identifying optimum timing when the laser-based cleaning is to be performed. Otherwise, a selective cleaning will be performed on the solar panel. The method receives a combination of weather data, power output data, and solar image data to pin-point dust contours from the solar panel and removes the dust hotspots through pointed laser cleaning on accounting the tradeoff between the power consumed the by the laser and power gained from the cleaned solar panel. To achieve pin-pointed laser beam cleaning, the system adjusts the focal length of the laser beam. The method pin-points the removal of dust contours responsible for reduction in power output by analyzing weather, power output and time series images and optimally determines the region of interest to remove the dust hotspots through pointed laser cleaning.

The invention is suitable for the technical field of solar cells, and provides a back contact solar cell, a cell assembly and a photovoltaic system, and the solar cell comprises a silicon substrate, the backlight surface of which is provided with a first region and a second region; the first passivation layer is arranged in the first region; the first doping layer is arranged on one surface, deviating from the silicon substrate, of the first passivation layer; the second passivation layer is arranged in the second region; the second doping layer is arranged on one surface, deviating from the silicon substrate, of the second passivation layer; at a preset position, an electric leakage contact layer is arranged in at least partial region between the first doping layer and the second doping layer, the electric leakage contact layer is connected with the first doping layer and the second doping layer, the thickness of the electric leakage contact layer is greater than that of the second passivation layer, and the ratio of the thickness of the electric leakage contact layer to the thickness of the second passivation layer is less than 4. According to the back contact solar cell, hot spot effect management and control can be achieved, normal power generation under a certain weak light condition is not affected, and hot spot effect management and control and power generation capacity of the back contact solar cell can be well balanced.