58 results about "Photovoltaic conversion efficiency" patented technology

The invention relates to the technical field of data processing, in particular to a new energy uncertainty multi-type energy storage staged capacity optimization configuration method, which comprises the following steps: acquiring energy storage parameters, new energy output and user load data through edge equipment, and verifying photovoltaic conversion efficiency and lithium battery electrochemical behaviors through a physical model to generate a high-confidence data set; the federal cooperative system fuses distributed node data to output a health degree distribution diagram, and the memory network analyzes the temperature and the charge-discharge coupling effect to generate a dynamic compensation coefficient alpha; an optimization engine receives the alpha value and wind and light prediction, generates a staged scheme through a parallel algorithm, and inputs the staged scheme into a simulation system for verification; and the edge node executes the scheme and collects response data, and twin compares a simulation value with an actual deviation to update a collection strategy. The method eliminates data distortion through physical rule verification, corrects aging unit state deviation through a dynamic compensation mechanism, optimizes decision binding real-time health degree, and effectively defends charging and discharging analysis errors of a virtual power plant dispatching desk.

The invention relates to the technical field of photovoltaic supports, in particular to a compact low-voltage distributed photovoltaic power station which comprises a base, a U-shaped frame, a mounting frame and a photovoltaic panel and further comprises a support, a motor, an overturning assembly, an adjusting assembly, a flow guide box and a baffle, and the right end of the mounting frame is provided with a first rotating rod and connected with a connecting frame through the first rotating rod. Through the arrangement of the driving rod, the cam, the first rotating rod and the reciprocating screw rod, when the driving rod rotates forwards, the cam is used for driving the photovoltaic panel to rotate by 90 degrees with the first rotating rod as a rotating shaft and be fixed, and on the premise that the photoelectric conversion rate in the roof range is not reduced, the photovoltaic conversion efficiency is improved; a worker can overhaul and maintain any photovoltaic panel without drilling to the bottom of the mounting rack; when the driving rod rotates reversely, the reciprocating screw rod is used for adjusting the height of the left end of the photovoltaic panel and the heat dissipation effect of the back face of the photovoltaic panel, the installed capacity of the photovoltaic power station can be increased in the limited space of the roof, and the photoelectric conversion rate can also be guaranteed.

The invention discloses a new energy distributed photovoltaic intelligent distribution recommendation and dynamic monitoring system, and relates to the technical field of photovoltaic layout, and the system comprises a plot function prediction module which is configured to output the function attribute of a surrounding plot and a future construction behavior prediction result; an external impact assessment module configured to generate an external environmental efficiency attenuation factor; a photovoltaic efficiency core module configured to output a photoelectric conversion dynamic efficiency value; the power transmission loss optimization module is configured to calculate the comprehensive line loss rate from the site selection of the target photovoltaic power station to the grid-connected access point; the comprehensive evaluation decision engine is configured to generate a stationing feasibility score and output a recommended site selection map; and the full-life-cycle monitoring platform is configured to monitor the running state of the built new energy photovoltaic facility. The method has the advantages that the shielding pollution hidden danger in the site selection stage is avoided through plot function prediction and dynamic environment risk assessment; and the photovoltaic conversion efficiency and the power grid loss collaborative optimization model are fused, so that the power generation efficiency and the grid-connected economy are improved.

The invention relates to the technical field of information, and discloses a photovoltaic power generation prediction method and system based on accumulated snow influence, and the method comprises the steps: constructing a first historical constant-temperature aging efficiency curve through the historical power generation related data of photovoltaic power generation equipment in a target region under a snowy day condition, and determining an accumulated snow state change region in the curve; determining first historical photovoltaic conversion efficiency data of the area based on the accumulated snow distribution uniformity; based on the first historical photovoltaic conversion efficiency data and the accumulated snow state change area, determining equipment state data and accumulated snow adhesion strength data of the photovoltaic power generation equipment, further constructing a second historical constant-temperature aging efficiency curve, and combining the obtained curve with corresponding historical temperature and humidity data to obtain a second historical constant-temperature aging efficiency curve; and determining second historical photovoltaic conversion efficiency data of the photovoltaic power generation equipment to calculate a power prediction value of the photovoltaic power generation equipment in a future preset time period, accurately evaluating the influence of accumulated snow on the photovoltaic power generation efficiency, and further accurately predicting the power of the photovoltaic power generation equipment under the influence of the accumulated snow.

The present invention discloses a perovskite active layer doped with a carbazole-based small molecule, and its preparation method and application. The preparation method includes: dissolving formamidinium iodide, cesium iodide, lead iodide, and methylammonium iodide in an organic solvent to obtain a cesium-formamidinium-methylammonium lead iodide alloy perovskite precursor solution of the ABX3 configuration; doping a carbazole-based small molecule dopant into the perovskite precursor solution; and preparing a carbazole-based small molecule-doped perovskite active layer by any one of spin coating, blade coating, or spray coating. By introducing the carbazole-based small molecule, the present invention effectively adjusts the energy level of the perovskite, improves the crystallinity of the perovskite thin film, and prepares a p-i-n type perovskite solar cell without a hole transport layer. The photoelectric conversion efficiency of the battery device prepared by this method exceeds 26.6%, and it exhibits excellent long-term operation stability.

The invention relates to the field of solar power generation, in particular to a solar power generation system which comprises a cell panel used for converting light energy into electric energy and a cooling box used for containing clear water, a surrounding frame is arranged on the edge of the rear side of the cell panel in a surrounding mode, a baffle is connected into the surrounding frame in a sealed mode, and two connecting pipes are arranged on the baffle. The two connecting pipes are communicated with the two sides of the cooling box through hoses respectively, two circulating pipes are fixed to the cooling box and used for water inflow and water outflow respectively, a middle plate is fixed to the center of the end, away from the battery panel, of the enclosure frame, a center pipe penetrating through the middle plate is fixed to the middle of the baffle, an annular plate is coaxially fixed to the rear end of the center pipe, and the annular plate penetrates through the middle plate. And a spring I is arranged between the annular plate and the middle plate. The photovoltaic conversion efficiency is prevented from being influenced by over-high temperature of the cell panel.

The present invention discloses a photovoltaic cell module and its connection process. In this photovoltaic cell module, the cells are arranged alternately and parallelly according to the positive and negative polarities. Between every two adjacent cells, a welding tape is placed along the length direction of the cells. Conductive adhesive is selectively coated at the center of the overlapping area between the main grid of the cell and the welding tape. Organosilicon rubber is coated at the center of the overlapping area between the cell and the welding tape or at a position relatively closer to the inner side of the cell. The welding tape and the cell are bonded and fixed through the cooperation of the organosilicon rubber or the organosilicon rubber and the conductive adhesive, realizing the series connection between the cells. The present invention uses a conductive adhesive and an organosilicon rubber both based on silicone to achieve the micro-elastic connection between the cell and the welding tape, enabling the internal stress to be dispersed to each adhesive position, reducing the risk of hidden cracks, and having a high yield rate for the cells in series. The conductive adhesive is arranged according to the need for conduction, forming several conduction positions between the welding tape and the cell, with a free conduction method, capable of achieving the inter-cell connection with zero spacing and negative spacing, and the photovoltaic conversion efficiency of the module is higher and more aesthetically pleasing.

The utility model relates to the technical field of building construction, and discloses a distributed photovoltaic roof support foundation pier lifting device which comprises a foundation pier body, an adjusting groove is formed in the middle of the foundation pier body, a supporting rod is arranged in an inner cavity of the adjusting groove, an arc-shaped body is welded to the lower end of the supporting rod, and fixing plates are arranged on the two sides of the foundation pier body. According to the technical scheme, the pushing plate can drive the sphere to move towards the middle, the smooth surface of the sphere is in contact with the cambered surface of the arc-shaped body, then the arc-shaped body is pushed to move upwards, the supporting rod is jacked up, and therefore the installation height of the photovoltaic support is lifted and adjusted according to the installation condition of a roof. The photovoltaic conversion efficiency of the photovoltaic panel is guaranteed, the smoothness of adjustment of the supporting rod can be guaranteed through smooth arrangement between the arc-shaped body and the ball body, the influence of rainwater and external impurities on adjustment of all parts is reduced, and then the lifting and adjusting effect on the foundation pier body is guaranteed.

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

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

The utility model relates to the technical field of solar cells, in particular to a photovoltaic module. The photovoltaic module comprises a battery, a first packaging layer and a second packaging layer, the first packaging layer is arranged on one side of the battery, the second packaging layer is arranged on the other side of the battery, and at least one of the first packaging layer and the second packaging layer comprises a thermosetting adhesive layer. According to the photovoltaic module provided by the invention, the thermosetting adhesive layer is arranged on the battery, so that a relatively good stress buffering effect can be provided for the battery, and the photoelectric conversion efficiency and the long-term use reliability of the solar battery are effectively improved.

The utility model relates to the technical field of photovoltaic supports, and discloses a photovoltaic support convenient to adjust, a mounting support is rotatably mounted at the upper part of a mounting pile under the driving of a rotary driving motor, and a photovoltaic panel body is mounted at the upper part of the mounting support in an overturning manner under the driving of the cooperation of a screw rod driving motor and an overturning connecting rod. A rotary driving motor is used for performing rotary driving on a mounting rotary seat to realize rotary adjustment of a photovoltaic panel body, a screw rod driving motor is matched with an overturning connecting rod to perform overturning driving on the photovoltaic panel body to realize overturning adjustment of a pitch angle of the photovoltaic panel body, and the photovoltaic panel body can be adjusted along with sunlight change through rotation and overturning adjustment. The photovoltaic conversion efficiency of the photovoltaic panel body can be effectively improved, the photovoltaic panel body is installed and connected with the support structure through the pin column rotating shaft structure, the number of connection contact points is small, disassembly is convenient, and disassembly operation of the photovoltaic panel body can be completed without disassembling a connection structure in the support. And the maintenance, disassembly and assembly convenience of the photovoltaic panel body is greatly improved.

The invention belongs to the technical field of solar cells, and discloses a semitransparent organic solar cell and a preparation method thereof. The crystallinity of the polymer is reduced by adopting a random copolymerization method of the donor unit, so that the content of the donor is greatly reduced, the photovoltaic conversion efficiency PCE is reduced slightly, 94% of that of a conventional opaque device can be kept, the transmittance of the device is greatly improved, the light utilization rate (LUE) is remarkably improved through the synergistic effect of the donor unit and the donor unit, and the application prospect is wide. And a new path is provided for developing an efficient semitransparent organic solar cell.

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

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

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

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

The present application relates to photovoltaic power generation prediction technical field, especially photovoltaic power generation prediction method based on digital twinning, including the following steps: S1: obtain the meteorological environment data, historical power generation data, installed capacity parameters of target photovoltaic power station and the real-time power generation data of each photovoltaic power generation branch; S2: based on the irradiance data in meteorological environment data and the installed capacity parameters, the current photovoltaic conversion efficiency is obtained by combining dynamic calibration, the physical benchmark power generation is calculated; based on the real-time power generation data of each photovoltaic power generation branch, when the non-uniform performance decay event is judged, the additional efficiency loss value is quantified. The present application utilizes dynamic calibration and branch diagnosis, adopts the grey box model of physical loss component constraint, combines the dynamic evaluation mechanism of health state and meteorological risk, realizes the active risk control of prediction output, and enhances the decision reliability under complex working conditions.

The invention relates to the field of sand photovoltaic technologies, in particular to a photovoltaic panel adjusting method, a photovoltaic panel adjusting device, a storage medium and electronic equipment. The photovoltaic panel adjustment method comprises the following steps: acquiring environmental data, and outputting sand and dust prediction parameters corresponding to the environmental data based on a sand and dust prediction model; solving a multi-target optimization model based on the sand and dust prediction parameters, and calculating to obtain a target inclination angle and a target height of the photovoltaic panel array; the multi-objective optimization model comprises a first objective function taking the maximum photovoltaic conversion efficiency of the photovoltaic panel as a target, a second objective function taking the minimum wear value of the photovoltaic panel as a target, and a third objective function taking the minimum operation and maintenance cost as a target; and generating photovoltaic panel adjustment information according to the target inclination angle and the target height. According to the photovoltaic panel adjusting method provided by the invention, the photovoltaic panel adjusting information can be automatically generated in the sand and dust weather, so that high photoelectric conversion efficiency is ensured, and meanwhile, the plate surface abrasion and the operation and maintenance cost are low.

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

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

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

The invention discloses a vertical magnetic anisotropy energy regulation and control method and application, and the method comprises the steps: simulating sunlight with different illumination frequencies through employing simulated sunlight and adjusting the distance from a light source to a metal film and the current of the light source; depositing a plurality of layers of metal films on a pre-cleaned substrate to form a ferromagnetic heterogeneous film; simulated sunlight is vertically incident on the ferromagnetic heterogeneous film, then a magnetic field perpendicular to the surface of the sample is applied, and the magnetism of the ferromagnetic heterogeneous film is regulated and controlled by changing the sizes of the applied magnetic field and the simulated sunlight field. According to the invention, the energy consumption is reduced, and the PN Si which is easy to integrate has higher photovoltaic conversion efficiency and chemical stability than an organic photovoltaic composite material.

The invention relates to a two-stage distributed photovoltaic MPPT (Maximum Power Point Tracking) control method. According to the control method, a variable step size duty ratio scanning method and a self-adaptive conductance increment method are fused and applied, firstly, global scanning is executed through variable step size duty ratio scanning, the size of the step size is dynamically adjusted by means of region division, the scanning speed is greatly increased, and the optimal duty ratio is accurately output after scanning is completed; and then, the duty ratio is used as an initial parameter to be imported into an adaptive conductance increment method to carry out more detailed local search, so that the tracking efficiency of the photovoltaic system is further improved, and the photovoltaic system is enabled to stably operate at a global maximum power point. According to the control method, the quick response advantage of the variable-step duty ratio scanning method and the high-precision tracking characteristic of the self-adaptive conductance increment method are combined, the photovoltaic conversion efficiency can be remarkably improved, and considerable economic benefits are created for practical engineering application.

The present invention discloses a method for the rapid calculation efficiency of color photovoltaic technology, which comprises the following steps: Data preprocessing stage: Receive the picture uploaded by the user, analyze it, remove noise and irrelevant elements, convert the picture from the conventional color space to the RGB color space for subsequent photovoltaic efficiency simulation, perform color analysis on the picture, extract key color information, and assign a unique number to each color; Photovoltaic efficiency simulation stage: According to the simulation parameters set by the user, construct a simulation environment for photovoltaic modules. For each extracted key color, simulate the photovoltaic conversion process of sunlight irradiating on it, and calculate the corresponding photovoltaic conversion efficiency. According to the distribution and proportion of colors in the picture, the present invention solves the problems that the existing method for calculating the operation efficiency of color photovoltaic has a long calculation time, many process flows, and limited applicability.

The invention discloses a spectral frequency-division phase-change nano-emulsion as well as a preparation method and application thereof, and relates to the technical field of solar energy utilization and photovoltaic and photo-thermal integration. In the phase-change nano-emulsion prepared by the invention, the liquid drops of the phase-change material are small in size (30-80nm) and are uniformly distributed, the phase-change nano-emulsion has high transmissivity (up to 80.4%) and transmission performance close to water in an effective response wave band (such as 700-1100nm) of a photovoltaic cell, spectrum frequency division can be efficiently realized, and the photovoltaic conversion efficiency is ensured; the mass fraction of the phase change material in the emulsion can reach 20%, the phase change latent heat is remarkable, the heat transport capacity is high, a large amount of heat can be absorbed through phase change when a photovoltaic cell is cooled, the cell is kept at the optimal working temperature, and meanwhile efficient collection and transmission of heat energy are achieved.

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

The present invention provides a safe energy storage multifunctional photovoltaic device, comprising: a light guide water trough fixedly mounted on a base with an inclined angle; the light guide water trough comprising a conductively connected horizontal portion and an inclined portion and filled with a first medium; a bifacial photovoltaic assembly disposed on the inclined portion of the light guide water trough for converting solar energy into electrical energy; a support assembly disposed at the bottom of the inclined portion of the light guide water trough, capable of adjusting the angle of the light guide water trough; and an energy storage battery compartment fixedly mounted on the bottom of the horizontal portion of the light guide water trough and electrically connected to the bifacial photovoltaic assembly for storing the electrical energy generated by the bifacial photovoltaic assembly. The present invention utilizes the light guide water trough to significantly increase photovoltaic power generation output and photovoltaic conversion efficiency, while achieving simultaneous photovoltaic and thermal energy generation and low-cost, high-reliability photovoltaic single-axis tracking. Furthermore, the present invention has the advantages of convenient self-cleaning, effectively extending the life of the photovoltaic cells, and achieving a zero-fire-hazard energy storage battery configuration.

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

The utility model belongs to the technical field of photovoltaic equipment, in particular to distributed photovoltaic grid-connected protection equipment, which comprises a protection box, a lifting seat is arranged in the protection box through a lifting mechanism, and photovoltaic module mounting racks are rotatably arranged at two ends of the top of the lifting seat through rotating shafts. Angle adjusting mechanisms used for adjusting the steering angle of the photovoltaic module mounting frame are arranged on the two sides of the lifting base, and a photovoltaic module is arranged on the photovoltaic module mounting frame through a mounting groove and a mounting hole. According to the utility model, the lifting seat can lift up and down more accurately and stably through the lifting mechanism; the lifting mechanism drives the lifting seat to descend into the protection box for storage and protection, so that the photovoltaic module is prevented from being collided and damaged by foreign objects during placement, and the safety of the photovoltaic module is improved; after the cover plate is covered, the photovoltaic module is prevented from being stained with dust to affect performance. And when the photovoltaic module is unfolded to work, the angle adjusting mechanism can drive the photovoltaic module mounting rack to rotate on the lifting seat, so that the angle adjustment of the photovoltaic module is realized, and the photovoltaic conversion efficiency of the photovoltaic module is improved.