6977 results about "Solar cell" patented technology

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 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 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.

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 present application relates to a solar cell, a method for manufacturing the same, a photovoltaic module and a photovoltaic system. The solar cell includes: a substrate (110), including a first surface (S1) and a second surface (S2) being opposite to each other, wherein the first surface (S1) has a first region (A) and a second region (B) adjacent to each other in a first direction; a passivating contact layer (120), located in the first region (A) of the first surface (S1); a polysilicon layer (130) located on at least a part of a surface of the passivating contact layer (120) away from the substrate (110); the passivating contact layer (120) including a first tunneling layer (121) and a first doped layer (122), the first tunneling layer (121) and the first doped layer (122) being sequentially stacked on the first region (A) of the first surface (S1) of the substrate (110) in a direction away from the second surface (S2); and a first passivation layer (140), located on a surface of the polysilicon layer (130) away from the passivating contact layer (120) and on the second region (B) of the first surface (S1).

The invention relates to the technical field of solar cell processing, in particular to a laser light-transmitting scribing control method and system for a solar thin-film cell. The control method comprises the steps that a large-size substrate is divided into a plurality of galvanometer view fields through a dynamic flight continuous machining mode, a continuous snake-shaped machining path is generated, the laser machining platform is driven to continuously move at the constant speed, and the galvanometer scanning system is synchronously triggered to start lineation in a splicing area in advance. According to the method, a time domain coupling equation of galvanometer scanning frequency-platform movement speed-laser pulse sequence is established, and dynamic compensation of an optical path and self-adaptive adjustment of energy density are achieved in the continuous machining process. Based on a view field expansion algorithm of a nonlinear kinematics model, the phase deviation of a scanning vector and a motion vector is effectively inhibited, and the geometric continuity of a splicing interface in ultra-long stroke machining is guaranteed.

System and method embodiments are described for solar panel protection against severe environmental impacts. A tracker controller may be configured to rotate a solar tracker comprising a group of solar panels to a safe position to diminish hail impact during a hailstorm. Such a rotation may be implemented using one or more motors to drive arc gears coupled to a pair of supporting purlins that support the group of solar panels. The tracker may comprise a bumper rail placed on the top when the tracker is at the safe position for hail impact absorption. Implementing solar panel protection provides a practical solution to protect solar panels from damage. Thus, the need for costly repair or replacement may be avoided, minimized, or decreased. As a result, the economic efficiency of solar power plant operations may be improved significantly.

The invention relates to the technical field of solar cells, in particular to a cell piece and a photovoltaic module. The battery piece comprises a body, a bonding pad, a harpoon structure and a fine grid. The bonding pad comprises an edge bonding pad and a middle bonding pad, and the middle bonding pad is located on one side of the edge bonding pad in the first direction. In the first direction, the harpoon structure is located on the side, away from the middle bonding pad, of the edge bonding pad, and the harpoon structure comprises a harpoon gap. A first fine grid and a second fine grid are arranged on the side, away from the middle bonding pad, of the edge bonding pad, and the first fine grid is located between the second fine grid and the edge bonding pad. The first fine grids are disconnected at the fish fork gaps, and the second fine grids penetrate through the fish fork gaps along the second direction, thereby optimizing the current collection path, facilitating the reduction of the current transmission loss, and improving the output power of the battery piece.

The invention provides a winding type flexible solar wing unfolding mechanism and a star body. The winding type flexible solar wing unfolding mechanism comprises a solar wing driving mechanism, a hinge, a rigid solar cell array, a flexible wing, a first pressing and releasing device and a second pressing and releasing device. The solar wing unfolding mechanism has the advantages of being small in folding size, light in weight, capable of being unfolded in orbit and large in folding-unfolding ratio. In addition, the structure is simple, the unfolding driving force source is simple, movement is reliable, unfolding driving kinetic energy is provided by releasing winding strain energy, and the unfolding rigidity of the solar cell array is provided after in-orbit unfolding.

The invention discloses a back contact cell, a photovoltaic module and a manufacturing method of the back contact cell, and relates to the technical field of solar cells, the back contact cell comprises a semiconductor substrate comprising a first surface, a second surface and a side surface, and the second surface is provided with a first area and a second area. The first doped semiconductor layer is disposed in at least a portion of the first region, and the second doped semiconductor layer is disposed in the second region and extends to a portion of the first doped semiconductor layer. The side face is provided with a first texture structure area extending in the direction from the first face to the second face, and the ratio of the length of the first texture structure area to the thickness of the semiconductor substrate is smaller than or equal to 80%; according to the invention, the probability of tiny defects between layers caused by different lateral etching efficiencies between the first doped semiconductor layer and the semiconductor substrate and between the second doped semiconductor layer and the semiconductor substrate can be reduced or eliminated, so that the problem of recombination of the finally obtained back contact cell can be reduced or eliminated, and the passivation effect of the back contact cell can be improved; therefore, the cell efficiency of the back contact cell is improved.

Provided is a back-contact solar cell. The back-contact solar cell includes: a substrate having first doped regions, second doped regions and gap regions arranged on the substrate; first doped semiconductor layers located on the corresponding first doped regions; second doped semiconductor layers located on the corresponding second doped regions, a conductive type of a second doping element within the second doped semiconductor layer is different from that of a first doping element within the first doped semiconductor layer; a conductive layer located on part of the gap region; a passivation layer covering the first doped semiconductor layers, the second doped semiconductor layers, the conductive layers and the gap regions; first electrodes in electrical contact with the first doped semiconductor layers; and second electrodes, in electrical contact with the second doped semiconductor layers.

The invention discloses a morning orbit computing power satellite, and belongs to the field of aerospace technology and space infrastructure. The satellite comprises a satellite platform and a computing force load arranged on the satellite platform. The satellite platform is provided with a condensation type energy system and a space pump drive fluid loop system. The condensation type energy system adopts an expandable condensation type solar cell array to generate power, switches a power supply mode according to an illumination period and an earth shadow period of a morning and night orbit, and supplies power to computing force loads and platform equipment. The space pump drive fluid loop system adopts an expandable flexible radiation cooling plate for heat dissipation, heat dissipation is conducted on computing force loads through a fluid loop, and a heating assembly is arranged to prevent a working medium from being frozen under the low-temperature working condition. Through the expandable structure and the orbit environment adaptability design, continuous energy supply and effective heat management are provided for the computing power load in the morning and night orbit environment, and high-power-consumption computing power load in-orbit stable operation is supported.

A clamp couples to a rail on solar panel modules are supported and transitions between an unclamped state and a clamped state. The clamp includes a first body having a shelf on which a first arm of the rail rests, a flange, and a channel. The first arm is at least partially disposed in the channel in the clamped state. The clamp includes a second body having a shelf on which a second arm of the rail rests, a flange, a channel. The second arm is at least partially disposed in the channel in the clamped state. The second body has a slot through which a fastener is disposed for coupling the clamp to a mount. A receptacle is formed at least in part by the first body and the second body, and the rail is at least partially disposed in the receptacle.

A multipurpose lounge chair device is provided. The device is comprised of a foldable and reclining frame that supports a seating body fabricated from cooling bungee weave. The device comprises a shade canopy made from UV-reflective fabric, which is pivotally mounted to the frame via adjustable hinges or articulated brackets to maximize solar exposure and shade coverage. At least one flexible monocrystalline solar panel is embedded in the canopy and configured to charge an onboard lithium-based battery. The battery powers at least one fan and at least one Bluetooth speaker, both of which may be controlled by a wired or wireless remote. A swing-out charging station table is attached to the frame by a pivot mechanism and includes multiple charging ports, such as USB or wireless charging pads, along with a non-slip surface for item placement.

The invention discloses a solar cell and a photovoltaic module, and relates to the field of photovoltaic technology. The solar cell includes: a semiconductor substrate having a first semiconductor layer on a first surface; the passivation layer at least covers one side, deviating from the semiconductor substrate, of the first semiconductor layer; the seed layer penetrates through the passivation layer and is conductively connected with the first semiconductor layer; at least part of the first grid line is arranged on the side, away from the semiconductor substrate, of the seed layer, and the first grid line is formed by base metal slurry. The height of the seed layer is h1, the height of the first grid line is h2, and 0.08 < = h1 / h2 < = 0.8. Compared with the prior art in which the silver paste burns through the passivation layer to integrally form the silver electrode, the amount of the silver paste required for manufacturing the whole electrode structure of the solar cell can be reduced, and the manufacturing cost of the whole electrode structure is reduced.

The embodiment of the invention provides a preparation method of a solar cell and the solar cell, and the method comprises the steps: firstly obtaining a substrate cell piece, forming a passive film layer on the substrate cell piece, then forming a grid line on the passive film layer, and then carrying out the sintering. When the grid line is subjected to laser scanning, reverse bias voltage is applied to the grid line, meanwhile, laser scanning is carried out from the middle area of the passive film layer to the edge area, and the laser power when laser scanning is carried out on the middle area is larger than the laser power when laser scanning is carried out on the edge area. When a passive film is formed, due to the influence of a winding plating phenomenon, the passive film has the characteristics that the middle is thin and the edge is thick. The laser power of the edge area is lower, so that the process strength of the edge area can be reduced, and the temperature generated by the edge area can be reduced. Compared with the prior art, the method has the advantages that the high-temperature phenomenon of the edge area can be relieved, the abnormal black edge phenomenon caused by high process strength at the edge is effectively reduced, and the product yield and quality are improved.

The invention discloses a solar cell and a photovoltaic module, relates to the technical field of solar cells, and aims to solve the problem of low efficiency of the solar cell. The solar cell includes a semiconductor substrate including a first face and a second face opposite to each other, and a side face connecting the first face and the second face. The first face is provided with an edge area and a middle area, the edge area surrounds the middle area, the edge area is provided with a first texture structure, the middle area is provided with a second texture structure, and the size of the first texture structure is larger than that of the second texture structure. Through the structure, the light trapping effect of the semiconductor substrate can be improved, and the light absorption rate is increased, so that the efficiency of the solar cell is improved. The invention further provides a photovoltaic module, the photovoltaic module comprises the solar cell in the technical scheme, and a plurality of solar cells are connected to form a cell string.

The invention discloses a back contact cell, a preparation method thereof and a photovoltaic module, and belongs to the technical field of solar cells. The back contact cell includes: a silicon substrate; the first doping layer is arranged on the first surface of the silicon substrate; the second doping layer is arranged on the first surface of the silicon substrate and is opposite to the first doping layer in polarity; the isolation structure is arranged between the first doping layer and the second doping layer along the first direction and penetrates through the first doping layer and the second doping layer along the second direction; the first electrode is electrically connected with the first doping layer; the second electrode is electrically connected with the second doping layer; the surface passivation layer is arranged on the surfaces of the sides, deviating from the silicon substrate, of the first doping layer and the second doping layer in the second direction and is filled with part of the isolation structure; the electric leakage channel is arranged on the surface of the side, away from the silicon substrate, of the surface passivation layer and makes contact with and is electrically connected with the first electrode and the second electrode, the risk caused by the hot spot effect can be reduced, and meanwhile the preparation complexity is low.

The invention provides a three-junction quantum well solar cell epitaxial structure and a manufacturing method thereof, the three-junction quantum well solar cell epitaxial structure comprises a substrate serving as a first sub-cell, a first tunnel junction, a second sub-cell, a second tunnel junction and a third sub-cell which are sequentially stacked from bottom to top, and the three sub-cells are connected through the tunnel junctions; wherein the first sub-cell is a Ge cell, the second sub-cell is an InGaAs cell, the third sub-cell is a GaInP / AlGaInP quantum well cell, the third sub-cell comprises a (Al < x > 1 < Ga < 1-x > 1 < y > 1 < In < 1-y > 1 < P) back field layer, a quantum well base region, a (Al < x > 4 < Ga < 1-x > 4 < y > 4 < In < 1-y > 4 < P) emitter region and an Al < x > 5 < In < 1-y > 5 window layer which are sequentially stacked from bottom to top, the quantum well base region is composed of a Ga < x > 2 < In < 1-x > 2 layer and a (Al < x > 3 < Ga < 1-x > 3 < y > 3 < In < 1 x is larger than or equal to 0.5 and smaller than or equal to 0.8, y is larger than or equal to 0.5 and smaller than or equal to 0.8, y is equal to 0.5, the GaInP / AlGaInP quantum well structure is used for replacing a traditional AlGaInP material to serve as a top cell material, the open-circuit voltage of the solar cell is increased, and meanwhile the defect that the short-circuit current of the AlGaInP / GaAs / Ge solar cell is insufficient is overcome.

The invention relates to the technical field of solar cells, and provides a back contact solar cell, a cell assembly and a photovoltaic system.In the back contact solar cell, first doping structures and second doping structures are alternately arranged in the first direction, each first doping structure comprises a plurality of first doping parts arranged at intervals in the second direction, and each second doping structure comprises a plurality of second doping parts arranged at intervals in the second direction. The first doping structure comprises a plurality of first doping parts which are arranged at intervals in the second direction, a first gap is formed between every two adjacent first doping parts, the second doping structure comprises a plurality of second doping parts which are arranged at intervals in the second direction, and a second gap is formed between every two adjacent second doping parts. Therefore, parasitic absorption of the back surface can be reduced, the double-sided rate of the back contact solar cell is improved, metallization recombination can be effectively reduced, and the efficiency of the back contact solar cell is improved.

The present application discloses a photovoltaic module, and a solar cell and a preparation method therefor. The solar cell comprises: a substrate, wherein the substrate has a first surface and a second surface which are oppositely arranged; a first doped region, located in the substrate and extending from the first surface into the substrate; a second doped region, comprising a tunneling layer and a second silicon-containing doped layer which are sequentially stacked on the first surface, wherein one side surface of the tunneling layer is stacked on the first surface of the substrate. The first doped region and the second doped region are alternately arranged, the conductive type of the second doped region and the conductive type of the first doped region are opposite, and a gap is present between the first doped region and the second doped region. The first doped region contains boron as a doping element.

The embodiment of the invention relates to the photovoltaic field, and provides a photovoltaic module, the photovoltaic module comprises a plurality of battery strings, a first connecting structure, a second connecting structure, an adhesive film and a cover plate, each battery string comprises a plurality of battery pieces, the plurality of battery pieces comprise first battery pieces with chamfers and second battery pieces without chamfers, and the first connecting structure and the second connecting structure are arranged on the cover plate. The first battery piece and the second battery piece are N pieces formed by cutting a whole solar battery piece, N is greater than or equal to 3, and the battery string comprises a head end and a tail end which are oppositely arranged; the two opposite sides of the first connecting structure are electrically connected with the same number of battery strings, the first connecting structure is electrically connected with the battery pieces at the head ends of the battery strings, and the battery pieces at the tail ends of the multiple battery strings located on the same side of the first connecting structure are first battery pieces or second battery pieces; the adhesive film is positioned on the surface of the battery string; the cover plate is located on the surface of the adhesive film deviating from the cell string. According to the embodiment of the invention, the performance of the photovoltaic module can be improved, and the aesthetic property of the photovoltaic module is improved.

The present disclosure relates to a solar plant with solar panels (2, 2′) which are prefabricated in a leporello folding (3) which can be unfolded in an unfolding direction (A), and a substructure on which the solar panels are arranged, wherein the substructure is designed to be flexible in the unfolding direction (A) and is connected to the solar panels in a positionally fixed manner in such a way that the leporello folding (3) of the solar panels can be unfolded with the substructure (8, 9, 10, 24) and determines angular positions of the solar panels (2, 2′) relative to one another.

A swimmer emergency alerting, tracking, rescue assistance, and rip current mapping system includes a stand and a life preserver that is removably mounted to the stand. The stand includes a solar panel or other charger, and the life preserver includes a battery receiving power from the charger and a sensor that is driven by the battery, such as to detect a location of the life preserver. The stand and the life preservers may wirelessly communicate with another device, such as a user device, to provide information on a status of the stand and the life preserver. A drone may fly from the stand and collect images of a shore, and the drone may process the images to identify a rip current. The drone may use data from a watercraft identifying rip current to train the processing of the images.

The invention is applicable to the field of photovoltaic technology, and provides a solar cell module and a photovoltaic system, the solar cell module comprises a first cell string, a first solder strip, a second solder strip, a bus bar and an insulating layer; the first battery string comprises a plurality of back contact battery pieces which are connected in series, and the back contact battery pieces comprise end battery pieces; a plurality of first welding strips and second welding strips are alternately arranged on the end battery piece in the first direction, the first welding strips and the second welding strips extend in the second direction, one end, close to the edge of the first battery string of the end battery piece, of each second welding strip extends to form a turnover section, and the turnover sections are turned over towards the end battery piece; the insulating layer and the bus bar are arranged in a stacked mode, extend in the first direction and are arranged between the second welding strip and the turnover section, the insulating layer makes contact with the second welding strip, and the bus bar makes contact with the turnover section. Therefore, welding personnel or equipment can accurately control welding, the welding quality is improved, meanwhile, thermal damage or subfissure to the back contact battery piece is avoided, and the service life and the stability of a product are guaranteed.

The invention provides copper paste, a preparation method thereof and application of the copper paste in preparation of a solar cell, and relates to the technical field of photovoltaic cells, and the copper paste comprises the following components: a conductive material and a conductive reinforcing material; the conductive material comprises at least one of gradient micron-sized nickel-tungsten coated copper powder and micron-sized nickel coated copper powder; the conductive reinforcing material comprises at least one of a nano nickel wire and nano nickel-tungsten coated copper powder. According to the invention, the slurry formula is improved, and the conductivity, the process adaptability and the low-temperature sinterability are enhanced.

The invention provides a solar cell and a photovoltaic module, and relates to the technical field of photovoltaics. The battery includes: a silicon substrate including a surface having an N region and a P region; the N-type doped layer is positioned on the N region of the silicon substrate; the P-type doped layer is located on the P region of the silicon substrate; the first electrode is in contact with the P-type doped layer; the second electrode is in contact with the N-type doped layer; the first electrode and the second electrode both contain metal elements; the content of metal elements in a region corresponding to the first electrode in the P-type doped layer is greater than the content of metal elements in a region corresponding to the second electrode in the N-type doped layer. According to the invention, the contact resistance corresponding to the first electrode can be reduced, the contact difference between the P region and the N region can be reduced, good contact between the P region and the N region is realized at the same time, and the efficiency of the solar cell is improved.