16results about How to "Guaranteed passivation effect" patented technology

The back contact solar cell comprises a silicon substrate, a first passivation layer, a protection layer, a first electrode and a second electrode, the silicon substrate is provided with a first surface and a second surface which are opposite to each other, and one side of the second surface of the silicon substrate is provided with a P-type conductive region and an N-type conductive region which are arranged at intervals; the first passivation layer is arranged on the first surface of the silicon substrate, the protection layer is arranged on the side, away from the silicon substrate, of the first passivation layer, the first electrode is electrically connected with the P-type conductive region, and the second electrode is electrically connected with the N-type conductive region. The protection layer can prevent other stacked back contact solar cells or other objects from making contact with the surface of the first passivation layer, and the surface of the first passivation layer is prevented from being scratched or damaged by other objects, so that the passivation effect of the first passivation layer on the first surface is guaranteed, and the photoelectric conversion efficiency of the back contact solar cells is improved. In addition, due to the arrangement of the protective layer, the surface of the first passivation layer can still be well protected when the multiple back contact solar cells are stacked irregularly, and an isolation part does not need to be additionally arranged between every two adjacent back contact solar cells in the sorting and collecting process. The sorting and collecting efficiency of a plurality of back contact solar cells can be improved, the structure is simple, preparation is convenient, and the preparation cost is saved.

The invention relates to a solar cell, a laminated cell and a photovoltaic module, and the solar cell comprises a substrate, a first surface of the substrate comprises a first region and a second region, the first region comprises a first sub-region, a tunneling layer is disposed on the first region, and a doped conductive layer is disposed on the side, away from the substrate, of the tunneling layer. The first passivation layer is arranged on the side, away from the tunneling layer, of the doped conductive layer and on the second area, the first anti-reflection layer is arranged on the side, away from the substrate, of the first passivation layer, the first fine grids are arranged on the first sub-areas in a one-to-one correspondence mode, and at least part of structures of the first fine grids penetrate through the first anti-reflection layer and the first passivation layer. The distance L1 between the first fine grid and the edge of the first sub-region corresponding to the first fine grid in the first direction meets the condition that L1 is larger than or equal to 50 micrometers and smaller than or equal to 800 micrometers, and therefore light parasitic absorption of the doped conductive layer can be reduced, meanwhile, the performance of carrier transverse transmission is guaranteed, and the photoelectric conversion efficiency of the solar cell is improved.

The invention provides an IBC solar cell. The IBC solar cell comprises a silicon substrate; the tunneling oxide layer comprises a first tunneling oxide layer formed on the front surface of the silicon substrate and a second tunneling oxide layer formed on the back surface of the silicon substrate; the doped silicon-containing film layer is arranged on one side, opposite to the silicon substrate, of the second tunneling oxide layer; wherein the number of defects in the first tunneling oxide layer tends to zero or is zero, the second tunneling oxide layer comprises defects, the defects are pits and / or pinholes, and the pinholes penetrate through the tunneling oxide layer. The battery efficiency of the IBC solar battery provided by the embodiment of the invention is further improved.

The invention provides a solar cell and a manufacturing method of the solar cell, and mainly relates to the technical field of photovoltaics. The solar cell comprises a silicon substrate with a first surface and a second surface which are opposite to each other in the thickness direction, and the first surface of the silicon substrate sequentially comprises a first tunneling oxide layer, a first lightly doped layer, a first transparent conductive layer, a first heavily doped layer and a first passivation layer from inside to outside, and the doping types of the first lightly doped layer and the first heavily doped layer are the same. The doping layer is divided into the lightly doped layer, the transparent conductive layer and the heavily doped layer, and by means of good conductivity and light transmission of the transparent conductive layer, the passivation performance and low contact resistance of the solar cell are ensured, the negative influence of parasitic current on the cell efficiency is reduced, and the cell efficiency is improved.

The invention provides a preparation method of a TOPCon solar cell. The preparation method comprises the following steps: carrying out oxidation modification on a cut cell; the cutting edge of the battery piece is coated with passivation liquid, a passivation film is formed, the passivation liquid comprises at least one passivation agent, and the passivation agent passivates the cutting edge through the oxidation effect. The invention further provides the TOPCon solar cell piece prepared according to the preparation method, and the TOPCon solar cell comprising the TOPCon solar cell piece. According to the preparation method of the TOPCon solar cell, the cut edge of the cell is modified through oxidation, and then the cut edge of the cell is coated with the passivation solution, so that the passivation solution is more uniformly distributed on the cut edge of the cell, the adhesive force of the passivation solution on the cut surface is improved, the passivation effect is improved, and the service life of the cell is prolonged. And the passive film can be subjected to subsequent infrared and lamination processes, so that the damage is reduced.

The invention provides a photovoltaic cell and a preparation method thereof. A photovoltaic cell includes a silicon substrate having opposing substrate front and back sides; the oxide layer and the first doping layer are sequentially located on the front face of the substrate, and the first doping layer comprises polycrystalline silicon; the first intrinsic layer and the second doping layer are located in the first area on the front face of the cell and are sequentially and closely located on the first doping layer, and the second doping layer comprises amorphous silicon or microcrystalline silicon; the second intrinsic layer, the third doped layer and the back transparent conductive film layer are sequentially located on the back of the substrate; the first metal electrodes are located on the front face of the cell, the second metal electrodes are located on the back face of the cell, each first metal electrode is located in a first area of the front face of the cell, no first metal electrode is arranged in a second area, and the second metal electrodes make contact with the back face transparent conductive film layer. According to the photovoltaic cell and the preparation method thereof, the metal contact and conductivity of the front surface of the cell can be optimized, and the cell efficiency is improved.

This disclosure relates to the field of solar cell manufacturing technology, and discloses a method for fabricating a solar cell and the solar cell itself. The fabrication method includes: providing a substrate layer with a first textured surface; forming an anti-reflection passivation layer on the surface of the substrate layer, the anti-reflection passivation layer conformally covering the first textured surface; laser-treating the anti-reflection passivation layer to form a second textured surface, the second textured surface including multiple micro-recesses; and forming a repair passivation layer on the laser-treated surface of the anti-reflection passivation layer to repair laser damage introduced by the laser treatment, the repair passivation layer conformally covering the second textured surface. This disclosure can ensure the passivation effect of the cell while improving the light-trapping effect of the cell surface.

The utility model relates to the technical field of photovoltaic cell production, and provides a flow uniformizing device and passivation equipment, the flow uniformizing device comprises a plurality of flow uniformizing modules which are connected into an integral structure, and an area formed by arranging the flow uniformizing modules is used for fluid to pass through; the flow uniformizing module comprises a frame and a plurality of flow guide blades arranged in the frame side by side, and a gap exists between every two adjacent flow guide blades to form a fluid channel. The guide vane is in running fit with the frame, and the guide vane can rotate around the central axis of the guide vane to adjust the orientation of the fluid channel on the flow uniformizing module; thus, by adjusting the guide vanes on the flow uniformizing modules at different positions, the special gas can be enriched to the area needing to be coated without filling the whole furnace chamber, the consumption of the special gas is effectively reduced while the passivation effect is ensured, and thus the process cost is reduced.

The present disclosure relates to the technical field of solar cell, and particularly relates to a rounded reagent and a photovoltaic cell and a preparation method thereof. A textured pyramid structure is arranged on a poly removal area of the photovoltaic cell, and the top angle of the top of the pyramid and the bottom angle of the bottom of the pyramid are both rounded. The photovoltaic cell has excellent passivation performance and a double-sided rate simultaneously.

The utility model discloses a new energy automobile workpiece surface pretreatment is with passivation machine, including passivation cylinder, passivation cylinder side is equipped with lifting assembly, and lifting assembly output is equipped with the connecting plate, and the connecting plate bottom swing joint has the connecting column, and the connecting plate top outer wall is fixed with drive motor, and drive motor output is connected in the connecting column top through the shaft coupling, and the connecting column bottom is fixed with the net -like box. The utility model discloses through drive motor drive connecting column and net -like box rotation, make automobile workpiece in passivation liquid sustained rotation, effectively eliminate the contact dead angle caused by traditional static soak, ensure that workpiece each surface and passivation liquid fully react, and the independent chamber is separated through the baffle in net -like box, cooperate detachable net -like and place frame, realize the classified storage of different specifications, type workpiece, avoid confusion while convenient quick taking and placing, and the linkage design of lifting assembly and sealing cover plate, on the basis of preventing passivation liquid splashing, allows net -like box to be completely immersed in liquid level.

The invention discloses a passivation device and a loading structure, comprising an isolation box, a passivation box located in the isolation box, and a carrier device and a heating device located inside the passivation box. The carrier device carries sliced ​​batteries, the heating device controls the temperature in the passivation box, a spray device is arranged between the carrier device and the heating device, the spray device sprays oxygen or sprays passivation gas on the cross section of the sliced ​​batteries, and also comprises an ultraviolet lamp tube, the ultraviolet rays of the ultraviolet lamp tube react the oxygen sprayed into the spray device into ozone, and the ozone contacts the cross section of the sliced ​​batteries for passivation treatment. The invention adopts a technical solution of spraying ozone on the cross section of the sliced ​​batteries by the spray device for passivation treatment, which is simple to operate and can form industrialized and large-scale development. The invention can passivate the cross section of the sliced ​​batteries by the ozone generated by the ultraviolet lamp tube, and the ozone generation method is diverse.

The invention provides a passivating and polishing method for a high-speed steel milling cutter, which comprises the following steps: the high-speed steel milling cutter to be passivated is fixed on a rotatable clamping module, and the central axis of the high-speed steel milling cutter is horizontal; a nozzle of jet type polishing equipment is arranged above one side of a tool bit of the high-speed steel milling cutter, the jet direction of the nozzle faces a cutting edge of the high-speed steel milling cutter, an included angle of 40-50 degrees is formed between the jet direction of the nozzle and the rotating axis of the high-speed steel milling cutter, and the clamping module is rotated to enable the high-speed steel milling cutter to rotate reversely; the jet type polishing equipment is started to jet grinding particles to the high-speed steel milling cutter, and meanwhile the jet type polishing equipment or the high-speed steel milling cutter is moved so that the jet type polishing equipment can axially move relative to the high-speed steel milling cutter; the grinding particles comprise elastic matrix particles and hard particles wrapping the elastic matrix particles. According to the passivating and polishing method for the high-speed steel milling cutter, the passivating and polishing effect on the high-speed steel milling cutter is improved, and meanwhile the high machining efficiency is achieved.

The utility model relates to the technical field of stirring, and discloses metallurgical powder surface modifier coating stirring equipment which comprises a heating sleeve, a material barrel is mounted in the heating sleeve, and a heat preservation cover plate is mounted on the upper side of the material barrel; a central cylinder is installed at the bottom of the inner side of the material barrel in a threaded connection mode, first exhaust holes are evenly formed in the circumferential side of the central cylinder, duckbilled check valves are fixedly installed in the first exhaust holes, a gas conveying pipe is fixedly installed at the center of the bottom of the heating sleeve, the upper end of the gas conveying pipe is assembled with the material barrel in an inserted connection mode, and the lower end of the gas conveying pipe extends out of the heating sleeve; the center cylinder is sleeved with a driving cylinder, second exhaust holes are evenly formed in the circumferential side of the driving cylinder, and stirring blades are evenly and fixedly installed on the circumferential side of the driving cylinder. Inert gas can be introduced during stirring, the stirring and mixing effect can be improved through cooperation of the stirring mode and the ventilation mode, internal air can be exhausted, the uniformity and comprehensiveness of modifier coating are prevented from being affected, and the passivation effect of metallurgical powder is guaranteed.

The invention provides a photovoltaic cell and a preparation method thereof, the photovoltaic cell comprises a first surface and a second surface which are opposite to each other, and the first surface comprises a metal region and a non-metal region; the first surface of the semiconductor substrate comprises a metal section and a non-metal section; the first oxide layer and the first doped polycrystalline silicon layer are sequentially located on the metal section; the second oxide layer and the second doped polycrystalline silicon layer are sequentially positioned on the non-metal section in the non-metal region and are sequentially positioned on the first doped polycrystalline silicon layer in the metal region; the first electrode is connected with the first doped polycrystalline silicon layer; the intrinsic layer and the doped crystalline silicon layer are sequentially positioned on the second surface of the substrate; the transparent conductive film layer is positioned on one side, far away from the second surface of the substrate, of the second doping layer; and the second electrode is positioned on one side where the second surface is positioned and is connected with the transparent conductive film layer. According to the photovoltaic cell and the preparation method thereof, the cell efficiency can be improved on the basis of optimizing the process.

The invention provides a solar cell, a preparation method thereof and a photovoltaic module. The preparation method comprises the following steps that a tunneling oxide layer, a p + doped amorphous silicon carbide layer and a p + doped amorphous silicon layer are sequentially arranged on the back face of a silicon substrate in the direction away from the silicon substrate; grooves which are distributed at intervals and penetrate through the p + doped amorphous silicon layer are formed in the p + doped amorphous silicon layer, then channels are formed in the junctions of the grooves and the p + doped amorphous silicon layer, the tunneling oxide layer is divided into a P region and an N region, the p + doped amorphous silicon carbide layer and the p + doped amorphous silicon layer are arranged on the P region, and the p + doped amorphous silicon carbide layer is arranged on the N region; performing crystallization treatment, so that the p + doped amorphous silicon carbide layer and the p + doped amorphous silicon layer on the P region are respectively converted into a p + doped polycrystalline silicon carbide layer and a p + doped polycrystalline silicon layer, and the p + doped amorphous silicon carbide layer on the N region is converted into an n + doped polycrystalline silicon carbide layer; and performing post-treatment to obtain the solar cell.

The invention discloses a passivation device with a gas uniform diffusion function, comprising an isolation box, a passivation box located in the isolation box, and a carrier device and a heating device located inside the passivation box, wherein the carrier device carries sliced ​​batteries, the heating device controls the temperature in the passivation box, a spray device is arranged between the carrier device and the heating device, the spray device sprays oxygen or sprays passivation gas on the cross section of the sliced ​​batteries, and further comprises an ultraviolet lamp tube, the ultraviolet rays of the ultraviolet lamp tube react the oxygen sprayed into the spray device into ozone, and the ozone contacts the cross section of the sliced ​​batteries for passivation treatment. The invention adopts a technical solution of spraying ozone on the cross section of the sliced ​​batteries by the spray device for passivation treatment, which is simple to operate and can form industrialized and large-scale development. The invention can passivate the cross section of the sliced ​​batteries by the ozone generated by the ultraviolet lamp tube, and the ozone generation method is diverse.