594 results about "Silver paste" patented technology

The invention discloses metallized silver paste for improving sintering dusting of a TOPCon battery, a preparation method and application, and belongs to the technical field of solar battery manufacturing, and the technical scheme is that the metallized silver paste comprises the following components in percentage by mass: 72-87% of a metal phase; 3-9% of a glass phase; 8-12% of an organic carrier; 0.1%-0.5% of a polyimide precursor; 0.1 to 0.5 percent of cerium oxide; wherein the polyimide precursor forms a cross-linked network at a high temperature, the cerium oxide is used as a passivation layer protective agent, and lithium borosilicate glass is also added into the glass phase; according to the metalized silver paste for improving the sintering dusting of the TOPCon cell, the preparation method and the application, the dusting rate is reduced by improving and optimizing materials and process parameters, and compared with a traditional process, the efficiency, the photoelectric conversion efficiency and the yield of the solar cell are further improved.

The invention discloses high-conductivity low-temperature sintering composite copper paste and a preparation method and application thereof, and belongs to the technical field of conductive paste. The composite copper paste consists of the following components in percentage by mass: 70-90% of a conductive phase, 2-10% of a binding phase and the balance of an organic carrier. Wherein the conductive phase comprises cuprous hydride modified copper powder and a copper complex; the copper complex is formed by a copper compound and an organic ligand through a coordination reaction. The copper paste can be sintered to form an electrode or a circuit in a nitrogen atmosphere at a temperature of less than or equal to 300 DEG C, and has the advantages of low resistivity, good oxidation resistance, strong adhesion and the like, and the cost of the copper paste is obviously lower than that of silver paste. The invention also provides a preparation method of the composite copper paste and an application of the composite copper paste in preparation of an electronic component electrode or a conductive circuit.

The invention relates to the technical field of electronic materials, in particular to conductive silver paste for a BC battery, and the conductive silver paste comprises the following components in percentage by weight: 88-93 wt% of silver powder, 3-5 wt% of glass powder, 1-3 wt% of organic resin, 6-10 wt% of solvent and 0-1 wt% of other auxiliaries, the sum of the components is 100 wt%, and the glass powder comprises gallium sesquioxide. The conductive silver paste can be used for a BC battery so as to completely or partially solve the problem of large contact resistance of a P region of the BC battery, and meanwhile, the reliability is guaranteed.

The present invention discloses a tellurium-lead-lithium oxide glass powder for BC cell N-region conductive paste and its preparation method, belonging to the field of photovoltaic silver paste. The glass powder adopts components with high Pb, Te, and Li: aTeO2 - bPbO - cLi2O - dBi2O3 - eWO3 - fZnO - gSiO2 - hNa2O; where a + b + c + d + e + f + g + h = 1, 0.2 < a < 0.4, 0.1 < b < 0.4, 0.1 < c < 0.25, 0 < d < 0.1, 0 < e < 0.1, 0 < f < 0.1, 0 < g < 0.1, 0 < h < 0.05, and a + b > 0.5, and the ratio of c to h is (3 - 10):1. By controlling the specific Pb, Te, and Li contents and the specific Li / Na ratio in the present invention, a strong corrosion effect on the poly layer of the cell is achieved, enabling more silver ions dissolved in the glass liquid to recrystallize on the surface of the silicon wafer, thereby achieving good ohmic contact.

A leadless high-sensitivity all-quartz differential resonant pressure sensor chip comprises a quartz protection layer, the quartz protection layer is in bonding connection with a first quartz resonance layer, and the first quartz resonance layer, a quartz differential layer, a second quartz resonance layer and a quartz intermediate layer are in sealed connection through a glass frit bonding technology. The quartz middle layer and the quartz temperature sensing layer are in butt joint through a bonding technology, and the quartz temperature sensing layer and the quartz base are fixed through a glass frit bonding technology. After the conductive silver paste is subjected to high-temperature curing treatment, electrode signal conduction between the gold-plated lead columns and the first quartz resonance layer, the second quartz resonance layer and the quartz temperature sensing layer is realized; the differential output effect is remarkably improved, and conjugate interference is effectively restrained; the long-term stability of the vacuum sealing device is improved; the sensor sensitivity is improved; the reliability and the stability of electrical connection are improved; the problem of temperature measurement lag of an external temperature sensor is eliminated, and the precision of the sensor is further improved.

The utility model discloses a full-opening steel plate with a buffer metal layer for battery printing, and belongs to the technical field of solar battery printing. The full-opening steel plate with the buffer metal layer for battery printing comprises a frame, an annular auxiliary material piece and a graphical steel plate, the graphical steel plate is arranged on the annular auxiliary material piece, an avoiding area is larger than a graphic area of the graphical steel plate, the graphical steel plate comprises the buffer metal layer and a first metal layer, the graphic area of the buffer metal layer is provided with a plurality of first grid line holes, and the first grid line holes are communicated with the annular auxiliary material piece. A plurality of second grid line holes are formed in the pattern area of the first metal layer, at least one buffer metal layer is arranged on the pasting and printing face of the first metal layer, the first grid line holes are communicated with the corresponding second grid line holes, and the hardness of the buffer metal layer is smaller than that of the silicon wafer. According to the utility model, the surface of the steel plate can be matched with the uneven surface of the silicon wafer in the printing process, so that the consumption of printing silver paste is saved, the stable batch production is facilitated, and the electrical performance of the battery piece is improved.

A method for preparing a silver powder, comprising: subjecting a first silver salt, a first dispersing agent and a first reducing agent to a first treatment, so as to obtain silver crystal nucleuses; and subjecting the silver crystal nucleus, a second silver salt, a second dispersing agent, a second reducing agent and a modifying agent to a second treatment, so as to obtain a silver powder, wherein the modifying agent comprises lauric acid, decanoic acid and undecanoic acid. The silver powder prepared by means of the method has good dispersity and wettability, a narrow particle size distribution, a small particle size and high sintering activity, and is not prone to agglomeration in a conductive silver paste, thereby enabling the conductive silver paste to have a high solid content and endowing the conductive silver paste with good conductivity. The present invention further relates to a silver powder, a conductive silver paste, an electronic device and electric equipment.

The invention provides high-stability double-layer core-shell coated pure copper silver-substituted conductive paste and a preparation method thereof, and belongs to the technical field of electronic special materials. The copper-resistant coating comprises the following components in percentage by mass: 82%-90% of antioxidant copper powder with a double-layer core-shell structure, 3%-6% of bismuth-boron-zinc lead-free low-melting-point glass powder, 3%-7% of a modified epoxy resin compound organic carrier, 2%-5% of a gradient volatilization compound solvent and 0.5%-2% of a special compound additive for copper. Through the double-layer core-shell copper powder design of inner-layer nano-silver passivation and outer-layer organic composite coating and in cooperation with a liquid-phase synergistic anti-oxidation system, the volume resistivity after slurry curing is smaller than or equal to 3.5 * 10 <-5 > omega.cm, the resistivity change rate after 1000-hour damp-heat aging at 85 DEG C / 85% RH is smaller than or equal to 10%, the normal-temperature storage period without opening a tank is larger than or equal to 6 months, direct curing can be conducted in the conventional air atmosphere of 120-160 DEG C, and the high-temperature-resistant copper paste can be applied to the field of high-temperature storage. The silver paste is completely compatible with production and application production lines of existing silver paste, equipment transformation is not needed, the comprehensive cost is reduced by more than 80% compared with pure silver paste, and the silver paste can be widely applied to the fields of PCBs, membrane switches, flexible electronics, photovoltaic back electrodes, LED packaging and the like.

The utility model relates to the field of sensor packaging, in particular to an embedded image sensor packaging structure which comprises a substrate, an annular heat conduction groove and a heat dissipation assembly, heat is efficiently collected through a heat dissipation copper sheet, and heat is efficiently conducted through sintered silver paste. Heat absorbed by the heat dissipation copper sheet can be quickly transmitted to the vertical heat conduction through holes in the substrates, so that the heat is efficiently transmitted between the substrates, the heat dissipation path is expanded, the heat dissipation efficiency is improved, the electrical conduction between the heat dissipation copper sheet and the vertical heat conduction through holes is ensured, the electrical performance of the whole packaging structure is more stable and reliable, and the service life of the packaging structure is prolonged. The image sensor is simple in structure and convenient to use, signal interference and transmission loss are reduced, the quality and stability of output signals of the sensor are guaranteed, the trapezoidal waterproof dam is formed at the edge of the double-layer stepped infrared optical filter, the waterproof capacity can be further enhanced, water vapor is prevented from entering the image sensor from the edge of the optical filter, and it is guaranteed that the image sensor can work normally in a humid environment.

The invention belongs to the technical field of flexible electronics, and relates to a flexible piezoresistive sensor based on an MXene multilevel heterostructure and a preparation method of the flexible piezoresistive sensor. The method comprises the steps that MXene nanosheets are attached to the surface of a thermoplastic polyurethane nanofiber substrate through electrostatic self-adsorption, a nanofiber composite layer is obtained, UIO-66-NH2 is dispersed in the thermoplastic polyurethane nanofiber substrate, and the surface of the thermoplastic polyurethane nanofiber substrate is modified with a first chitosan modification layer; the MXene nanosheets are embedded into the three-dimensional network of the polyurethane foam skeleton through dipping and extruding operation, a porous foam composite layer is obtained, and the surface of the polyurethane foam skeleton is modified with a second chitosan modification layer; and combining the nanofiber composite layer and the porous foam composite layer through a conductive adhesive containing silver paste, and carrying out packaging treatment to form the MXene multistage heterostructure with tightly combined interfaces. Based on the method, through the synergistic effect of the multistage heterostructures, high sensitivity, wide pressure detection range and high stability are realized at the same time.

The invention discloses graphene-copper composite conductive paste and a preparation method and application thereof. The paste comprises graphene coated copper composite powder, a low-melting-point alloy bonding agent, functional glass powder and an organic carrier. Wherein the graphene coated copper composite powder is prepared by growing few layers of graphene in situ on the surface of copper powder through a chemical vapor deposition method, and a core-shell enhanced conductive unit is formed. According to the invention, the complete replacement of copper to silver (the silver content is 1t, 1%) in a photovoltaic electrode material is realized for the first time, meanwhile, the performance loss of a pure copper system is made up through the enhancement effect of graphene, and the photoelectric conversion efficiency reaches 97% or more of that of commercial silver paste on the basis that the material cost is reduced to 1 / 60 of that of the silver paste. The slurry is suitable for electrode preparation of various efficient photovoltaic cells such as HJT, TOPCon and perovskite, and has remarkable economic benefits and strategic significance.

The application discloses a high-tapped-density flaky silver powder for high-solid-content low-temperature curing silver paste and a preparation method thereof, and can be used in the preparation of low-temperature high-thermal-conductivity LED conductive silver paste, high-solid-content low-temperature HJT silver paste and other low-temperature silver pastes requiring high solid content, and can replace the use of other foreign silver powders. The high-tapped-density flaky silver powder for high-solid-content low-temperature curing silver paste has concentrated flaky powder particle size distribution, and the tapped density reaches 5.5 or above, so that the market demand is met, and the blank of the high-tapped-density flaky silver powder required by the high-solid-content low-temperature curing silver paste in China is filled.

The application discloses a novel flexible printed circuit board and camera module prepared based on weldable low-temperature silver paste, and belongs to the technical field of electronic materials and devices. The conductor pattern in the flexible printed circuit board comprises a main circuit pattern and an auxiliary function structure formed by weldable low-temperature cured silver paste. The curing temperature of the weldable low-temperature silver paste is 87-103 DEG C. The silver paste comprises conductive fillers, a polymer resin system, ester solvents, a curing agent, a silane coupling agent, polyamide wax thixotropic agents, polysiloxane defoaming agents, modified carbon nanotubes, modified antimony tin oxide powder, modified ceramic fillers and low-stress modifiers. The polymer resin system comprises hydrogenated bisphenol A type epoxy resin, diphenyl type epoxy resin and polyacrylate-CTBN copolymer. The conductive fillers comprise silver-coated copper flaky powder, nano silver wire and low-temperature alloy powder. Through the synergistic effect of components and the innovative process, the comprehensive improvement of mechanical properties, conductive properties, high-frequency characteristics and welding reliability is realized under the premise of ultralow-temperature curing.

The utility model discloses photovoltaic silver paste production batching equipment capable of quantitatively feeding, which relates to the technical field of photovoltaic silver paste production, and adopts the technical scheme that the photovoltaic silver paste production batching equipment comprises a mixing tank, and two quantitative feeding mechanisms are arranged at the top of the mixing tank; each quantitative feeding mechanism comprises a connecting shell, the connecting shell is fixedly arranged at the top of the mixing tank, a third motor is fixedly arranged on one side of the connecting shell, the output end of the third motor is fixedly connected with a transmission rod, and the transmission rod penetrates through the side wall of the connecting shell and is connected with the side wall of the connecting shell through a bearing. Each quantitative feeding mechanism further comprises a unique structural design, different materials can be fed in batches, the different materials can be sequentially added into the mixing tank according to a preset sequence when multiple materials are mixed, the problem that the material adding sequence is disordered is avoided, the efficiency and accuracy of the mixing process are effectively improved, and the production cost is reduced. And a guarantee is provided for producing high-quality photovoltaic silver paste.

This invention provides a low-temperature sintering silver paste for solar cells, its sintering method, and its application. The low-temperature sintering silver paste comprises: 70 wt.%–90 wt.% micro / nano silver powder, 5 wt.%–20 wt.% organic carrier, and 1 wt.%–10 wt.% Ni-based coated glass powder; wherein the micro / nano silver powder comprises 60 wt.%–80 wt.% micron-sized silver spheres with a particle size of 1–3 μm and 20 wt.%–40 wt.% nano-sized silver spheres with a particle size of 20–80 nm; the Ni-based coated glass powder consists of Bi-B-Si glass powder and a magnetic Ni-based alloy coating layer coated with the Bi-B-Si glass powder. This invention introduces micro-nano silver powder and Ni-based coated glass powder into the silver paste. The Ni-based alloy coating layer is magnetic, which enhances the magnetic properties of the glass powder. By combining micro-nano silver powder with electromagnetic field composite sintering technology, the silver paste is rapidly and densely sintered at a lower temperature, which effectively improves electrode conductivity, reduces contact resistance, and enhances contact performance with the silicon substrate, thereby improving photoelectric conversion efficiency and shortening sintering time.

The invention belongs to the technical field of graphene, and particularly relates to graphene leather capable of realizing temperature-sensitive color development and a preparation method of the graphene leather. As the graphene heating functional layer adopts the high-thixotropic silver paste, the printed circuit pattern is clear in edge, uniform in thickness and extremely high in consistency with the designed pattern; and a clear interface is formed between a silver paste circuit and leather fibers, and improper penetration is avoided. And the circuit resistance value consistency is excellent (the deviation is controlled within + / -5%), so that rapid, uniform and stable planar heating can be realized after the graphene heating layer is connected, and the local overheating hidden danger is perfectly eliminated. According to the present invention, the natural texture and the soft touch feeling of the leather are maintained while the efficient and safe heating performance with the visual color developing function is achieved.

The embodiment of the present application provides a kind of N-type IBC battery negative electrode grid silver paste, N-type IIBC battery and preparation method thereof, wherein, the N-type IBC battery negative electrode grid silver paste provided in the embodiment of the present application includes organic auxiliary agent, silver powder, organic binder and doped glass powder, and the doping element of the doped glass powder is antimony, tellurium and tungsten.By doping antimony, tellurium and tungsten elements in glass powder, antimony element is the same as phosphorus, and the doping of N area can be increased;And tellurium and tungsten have the effect of dissolving silver, which can reduce the contact resistivity of silver grid line, improve the fill factor, thereby improving the photoelectric conversion efficiency of battery;Thus, the problem that the existing N-type IBC battery cannot form n+ region, so that the photoelectric conversion efficiency of N-type IBC battery is not good.

The embodiment of the utility model discloses a pair of glasses, and relates to the technical field of glasses. The glasses comprise glasses legs, the surfaces of which are attached with sensors through nano-silver paste; the sensor is attached to the surface of the mirror frame through the nano-silver paste; and the spring needle connectors are arranged at the joints of the glasses legs and the glasses frame and are used for connecting the pins on the glasses legs and the pins on the glasses frame. Therefore, according to the scheme, the sensors can be arranged on the glasses legs and the glasses frame, and good contact is realized through the spring needle connectors.

According to the preparation method of the solid tantalum capacitor, the solid tantalum capacitor is composed of a tantalum block, a medium oxide layer with gradient thickness, a cathode layer, a transition layer, a silver layer and a plastic packaging layer, and the thickness of the medium oxide layer is in gradient nonlinear decrease from the outer surface of the tantalum block to the body center of the tantalum block; the preparation method of the solid tantalum capacitor comprises the following steps of pressing and sintering, energizing, heat treatment, complementary forming, coating, graphite silver paste, plastic packaging and multiple times of aging. The environment of the aging process is as follows: the relative humidity is 60-90%, the aging temperature is 60-125 DEG C, and the aging voltage is 0.6-1.5 times of rated voltage; according to the method, secondary energizing and multiple humidifying and aging processes are matched, so that the thickness of the dielectric oxide layer of the solid tantalum capacitor has the structural characteristic of gradually reducing from outside to inside, the capacity contribution degree has the trend of gradually increasing from outside to inside, the short-plate effect of the external dielectric oxide layer is supplemented, and the performance of the solid tantalum capacitor is improved. Therefore, the overall voltage endurance capability of the tantalum capacitor is improved, and the capacity of the tantalum capacitor is not sacrificed.

This invention discloses a heterojunction low-temperature curing silver paste suitable for space HJT battery applications, its preparation, and its application. The heterojunction low-temperature curing silver paste comprises the following components in parts by weight: 75-92 parts of a first conductive powder, 0.5-5 parts of a second conductive powder, 2.25-9.5 parts of a composite resin system, 0.5-4.8 parts of a blocked isocyanate curing agent, 0.05-0.5 parts of a latent accelerator, 0.2-1.8 parts of a coupling agent, 0.3-1.5 parts of a dispersant, and 1.5-6.4 parts of a solvent; the composite resin system comprises epoxy resin and cyanate ester resin, with a mass ratio of epoxy resin to cyanate ester resin of (2-8):1. The silver paste of this invention can form a dense cross-linked network after curing at 150-250℃, while meeting the low outgassing requirements of materials for spacecraft. It can withstand extreme temperature difference cycles from -196℃ to +150℃ and high-energy particle irradiation environments in space, and is suitable for the preparation of metallized electrodes for HJT solar cells in low Earth orbit and medium-high Earth orbit.

The invention provides a preparation method of a grid line of a perovskite laminated cell, the cell and a preparation method of the cell, and relates to the technical field of solar cells. The preparation method of the grid line of the perovskite laminated cell comprises the following steps: S1, respectively forming electroplating electrode holes in the front surface and the back surface of the perovskite laminated cell to be manufactured by the grid line; s2, double-sided copper electroplating is adopted, a grid line is prepared at an electroplating electrode opening through an oxidation-reduction reaction, and preparation of copper electrodes on the front surface and the back surface of the cell is achieved; wherein an AlOx protection layer is prepared on the front surface of the perovskite laminated cell to be manufactured by the grid line; the electroplating temperature of the double-sided copper electroplating is 20-60 DEG C. According to the invention, the grid line is prepared by combining the AlOx protection layer with the low-temperature electroplating process, so that the cost is reduced, the cell performance is improved, the consumption of silver paste is reduced, and the production cost is reduced.

The application discloses a sheet type laminated solid-state aluminum electrolytic capacitor and a preparation method thereof. The capacitor comprises a core package and a resin shell. The resin shell is packaged outside the core package and forms the solid-state aluminum electrolytic capacitor. The core package comprises a core package prototype, an anode lead frame and a cathode lead frame. The core package prototype comprises arc-shaped cores and metal shafts. A conductive silver paste layer is arranged in a cathode gap between two adjacent arc-shaped cores. The fixed position of the anode part of each core is at the center of the core, which is surrounded by the annular cathode part. Each core cathode part is integrally connected through the conductive silver paste, so that the whole core package presents a disc structure. The core package with the structure is more compact and has no gap. In the packaging process, the organic resin can be prevented from being squeezed into the core layers, the core deformation damage is prevented, the leakage current and ESR increase is prevented, the capacity shortage caused by the delamination between the cores and even the capacitor failure can be further prevented. Meanwhile, the cathode part of the core has a larger area and smaller ESR.

The invention belongs to the field of conductive silver paste, and particularly relates to low-temperature conductive silver paste which comprises modified silver powder and an organic carrier. The modified silver powder is prepared by modifying silver powder through a composite modification solution; the composite modified solution comprises imidazole polyionic liquid and low-boiling-point fatty amine with the boiling point being below 180 DEG C; the organic carrier comprises fatty amine and alcohol. The invention also comprises a preparation method and application of the low-temperature conductive silver paste. According to the conductive silver paste, no organic resin or curing agent is added, the printing performance is good, all paste components can be removed at the low temperature of 150 DEG C or below, the influence of non-conductive organic components on the performance of the silver powder can be avoided, and the electrical performance of the silver powder can be brought into full play.

The utility model relates to photovoltaic industry manufacturing equipment technical field especially, and more particularly to a kind of for laser printing carrier plate roller coating silver paste mechanism.The utility model provides such a kind for laser printing carrier plate roller coating silver paste mechanism, including bottom plate, the installation carrier of part;First support rod, left-right symmetrical type is connected on the bottom plate upper side front side;Second support rod, is connected on the bottom plate upper side rear side;Material box, is connected between two the first support rod and the second support rod upper end.The utility model drives first stirring knife and second stirring knife to and fro stirring by starting first motor and second motor, start screw rod motor drive coating roller and extruding roller shift, start third motor and fourth motor, drive coating roller and extruding roller rotation, make coating roller surface and material box inner silver paste fully contact, adjust extruding roller and coating roller between interval by adjusting piece, and coating roller is coated to printing plate on slurry to complete coating.

The utility model relates to the technical field of chemical fractionation, and discloses a butyl carbitol fractionation device for preparing conductive silver paste, which comprises a condensation collection component, and a distillation device is arranged in front of the condensation collection component. According to the butyl carbitol fractionation device for preparing the conductive silver paste, by arranging a motor, a liquid guide pipe, a spiral conveying plate, a heating tank, a mounting plate, a first evaporation plate, a second evaporation plate, a connecting rod, a first spring and a limiting rod, a butyl carbitol solution is stirred by utilizing the spiral conveying plate, and meanwhile butyl carbitol flows downwards along the outer surface of the liquid guide pipe; the evaporation area of the butyl carbitol is enlarged, and when the butyl carbitol flows along the outer surfaces of the first evaporation plate and the second evaporation plate, the evaporation area of the butyl carbitol is further enlarged; by arranging a square plate, a second spring, a rotating shaft, a bracket, a stirring plate and a connecting shaft, a butyl carbitol solution is stirred by utilizing the stirring plate, and a stirring part is convenient to disassemble and assemble by pressing the rotating shaft downwards.

This application relates to the field of flexible electronic sensing technology, and provides a flexible electrode sensor module, including a first encapsulation layer, a silver paste conductive layer, a second encapsulation layer, and a third encapsulation layer stacked sequentially. The silver paste conductive layer is composed of at least two layers of screen-printed and cured silver paste, including a sensing part for contact sensing, a connecting part for signal output, and a connection point region disposed at the end of the connecting part. The second encapsulation layer covers the silver paste conductive layer, and the third encapsulation layer is disposed on the second encapsulation layer. The third encapsulation layer covers the edge of the silver paste conductive layer in the region corresponding to the sensing part and the connection point, and covers the surface of the silver paste conductive layer in the region corresponding to the connecting part. Based on this, conductivity can be improved while mechanical properties and signal stability are also improved.

The application relates to an organic carrier for conductive silver paste, a preparation method and application thereof, and belongs to the technical field of crystalline silicon solar energy. The organic carrier comprises the following components in percentage by weight: 0.1-6.0 wt% of an elastic resin, 0.5-20.0 wt% of a thickening agent, 70.0-95.0 wt% of an organic solvent and 0.05-5.0 wt% of a first additive; wherein the elastic resin is a polystyrene-polyolefin block copolymer. The polystyrene-polyolefin block copolymer is used in the organic carrier to replace a traditional polyamide wax thixotropic agent, effectively solves the printing durability problem of the paste, can maintain stable photoelectric conversion efficiency of a solar cell piece, and does not need to be cleaned and wiped due to screen blockage during the printing process, thereby avoiding the trouble of shutdown. Meanwhile, the grid line has a high aspect ratio, thereby improving the photoelectric conversion efficiency of the solar cell.

This invention discloses a silver paste material for low ESR stacked solid-state capacitors, its preparation method, and the capacitor thereof. The silver paste material is prepared by a method comprising the following steps: S1, organic carrier preparation: mixing a main solvent, a co-solvent, a dispersant, and a plasticizer to obtain an organic carrier; S2, low-speed mixing: first adding all the required proportions of spherical silver powder to the organic carrier and stirring at low speed, then adding flake silver powder in batches and continuing to stir until a uniform paste is formed. By weight percentage, the components of the silver paste material include: 20%~35% flake silver powder, 20%~30% spherical silver powder, 10%~20% main solvent, 2%~4% co-solvent, 13%~30% binder, 2%~4% dispersant, 1%~3% defoamer, and 1%~3% plasticizer. This invention protects the morphological integrity of flake silver powder, forming a dense conductive network. The total silver powder content can be as low as 40wt%. The preparation process is simple, reducing material costs and achieving the best balance between electrical performance and cost. It is suitable for high-power applications such as AI servers, 5G communications, and new energy vehicles.

The application discloses a conductive layer plating film equipment based on plastic material, which comprises an antiskid pad, a supporting seat, a storage table, a plastic base material and an ITO plating film layer, the supporting seat is fixedly installed at the upper end of the antiskid pad, the storage table is fixedly installed at the upper end of the supporting seat, the plastic base material is placed at the upper end of the storage table, the ITO plating film layer is sprayed on the outer side of the plastic base material, a film layer surface conductive ink is sprayed on the outer side of the ITO plating film layer, a groove is formed in the inner side of the plastic base material, a copper sheet is fixedly installed in the inner side of the groove, a barrier layer conductive ink is sprayed on the outer side of the copper sheet, and protective glue is sprayed on the outer side of the barrier layer conductive ink. The conductive layer plating film equipment based on plastic material is based on plastic material with complex or curved surface modeling requirements, when realizing the functions of power heating or conduction, the silver paste on the ITO plating film layer and the reserved or assembled metal electrode are connected through the conductive ink or glue in the reserved gap of the overall structure, so that the stability of the plating film is improved.

This application provides a silver paste, a solar cell, and a method for preparing the silver paste. The silver paste, by mass, comprises 70%–75% silver powder, 1%–3% modified glass powder, and 22%–29% organic carrier. The silver powder includes nano-silver powder and flake-shaped silver powder. The nano-silver powder has a particle size of 50 nm–200 nm, and the flake-shaped silver powder has a particle size of 1 μm–5 μm. The mass ratio of nano-silver powder to flake-shaped silver powder in the silver powder is 4:6–5:5. The modified glass powder includes glass powder and a coating layer. The coating layer is applied to the outer surface of the glass powder, and the coating layer is made of a silane coupling agent. The silver paste provided by this application combines the advantages of low silver loss and low contact resistance, which helps to improve the performance of the prepared solar cell while reducing production costs.