1833 results about "Soldering" patented technology

The invention relates to an intelligent visual identification technology-based cold solder joint microcrack intelligent discrimination method, which comprises the steps of collecting an initial RGB image of a to-be-detected welding spot, carrying out two-dimensional discrete cosine transform and inverse two-dimensional discrete cosine transform on the initial RGB image to obtain an enhanced image, and fusing the enhanced image with an R channel of the initial RGB image to obtain a fused image; forming a dual-channel feature map; calculating the phase consistency of the dual-channel feature map, and obtaining a suspected candidate region of the pseudo soldering microcrack through an adaptive threshold segmentation method; acquiring an RGB image sequence of a continuous time sequence of the welding spots, and performing anomaly detection to obtain an abnormal region set; and constructing a welding spot thermal diffusion model, and inputting the geometric parameters and the environmental parameters in the abnormal region set into the welding spot thermal diffusion model to obtain a final judgment result of the pseudo soldering microcracks. According to the method, through multi-dimensional feature fusion and continuous time sequence dynamic tracking, the detection precision of the pseudo soldering microcracks is remarkably improved, the false detection rate is reduced, and the final judgment result is more accurate.

The invention relates to a tin ring automatic focusing laser soldering tin fixing and 3D welding spot detecting system, and belongs to the technical field of industrial automatic laser processing. The system is characterized in that a tin ring preparation module identifies pins in real time and dynamically optimizes winding parameters through visual positioning and a self-adaptive winding head, and performs defect identification and pre-repair analysis through multispectral imaging; the soldering tin positioning module is used for switching stations through a rotary table, and precise positioning and clamping of a product are realized by combining laser contour sensing and a focusing compensation algorithm; the laser tin soldering module can visually identify tin materials and automatically call welding parameters, laser power and action time are regulated and controlled in real time by establishing a regional heat conduction model, and gradient cooling is implemented after welding; and the 3D detection module adopts dual-mode scanning, constructs a welding spot three-dimensional model based on fusion data, recognizes microcracks through super-resolution processing, and discriminates the welding spot quality. And automation and intellectualization of the whole process from tin ring preparation to welding spot quality detection are achieved.

The invention relates to the technical field of material processing control, and discloses a method for efficiently cutting a vacuum brazing soldering lug. The method comprises the following steps: firstly, receiving material parameters and target geometrical shape data of a to-be-cut soldering lug, and generating and optimizing an initial cutting track based on a preset algorithm; in combination with real-time temperature field monitoring data, thermal stress distribution is calculated through a finite element analysis method, and the cutting speed and laser power parameters are dynamically adjusted; and then the cutting precision and the equipment energy consumption are synchronously optimized through a multi-objective optimization algorithm, and final cutting parameters are output to a vacuum brazing control system. In addition, signals are collected in real time during cutting to recognize abnormity, and algorithm weights are calibrated by comparing geometric parameters after cutting. The cutting precision and efficiency can be effectively improved, equipment energy consumption is reduced, cutting abnormity is treated in time, self-optimization of the cutting process is achieved, and the method is suitable for the production field with the high requirement for vacuum brazing piece cutting.

The invention relates to the field of photovoltaic cell production, and discloses a main-grid-free photovoltaic cell series welding method and main-grid-free photovoltaic cell series welding device.The method comprises the steps that main-grid-free photovoltaic cell pieces and welding strips are conveyed to a pre-welding device, heating is conducted, so that the welding strips are pre-fixed to the surfaces of the corresponding main-grid-free photovoltaic cell pieces, and cell series arrays are obtained; synchronously transmitting the battery series and the back film layer to a heating and pressurizing device, and laying a front film layer on the battery series; and controlling the heating and pressurizing device to move to be in contact with the front film layer on the battery string, and heating and pressurizing the front film layer to obtain the battery string. The method comprises the following steps of: pre-fixing a battery piece and a welding strip, laminating, and heating and pressurizing a front film layer. During heating and pressurizing, a hold-down tool does not need to be placed on the front face, uneven heating is avoided, the problems of film bubbling and pseudo soldering are avoided, the welding quality can be guaranteed, and the conditions of pseudo soldering and grid breaking are reduced. And heating and pressurizing are carried out after pre-welding, so that the solder strip can be prevented from deviating.

The utility model discloses a full-automatic tin soldering machine which comprises a tin soldering table, a tin soldering mechanism, a visual detection device, a tin breaking and supplying assembly and a dust removal device, workpiece guide rails are arranged on the tin soldering table, each workpiece guide rail is connected with a sliding table in a sliding mode, jigs are placed on the sliding tables, and workpieces to be welded are contained on the jigs. A first support and a second support are fixedly arranged above the tin soldering table, a first sliding rail is arranged on the first support, a second sliding rail is arranged on the second support, the first sliding rail is parallel to the second sliding rail, the first sliding rail and the second sliding rail are both perpendicular to a workpiece guide rail below, and a visual detection device is slidably connected to the first sliding rail. The visual detection device can identify and position the pin welding position on the workpiece, the second sliding rail is slidably connected with a tin soldering mechanism, the tin breaking and supplying assembly is connected to the side face of the tin soldering mechanism, and the dust removal device is arranged behind the tin soldering table. Whole-process automatic operation of welding spot positioning, automatic tin supplying and breaking and automatic tin soldering can be achieved, and the automatic tin soldering machine has the advantages of being stable and rapid in operation and high in safety.

The invention relates to the technical field of ICT testing, in particular to an efficient online ICT intelligent testing device which comprises a machine table, a tester is fixedly mounted at the top of the machine table, an air cylinder is fixedly mounted at the top of the tester, a mounting seat is fixedly mounted at the output end of the air cylinder, and limiting rods which are symmetrically arranged in pairs are mounted in the tester. A limiting rod is arranged at the top end of the mounting seat, a test board slides on the outer wall of the limiting rod, an air pump is fixedly mounted at the bottom end of the test board, a clamping mechanism for fixing a circuit board is arranged at the top end of the test board, and a pressure detection mechanism for detecting the circuit board is arranged at the bottom end of the mounting seat. The air inlet speed is automatically adjusted through the thickness of the circuit board, the circuit board is protected, pseudo soldering spots are accurately positioned through the air cylinder, the probe and the displacement sensor, the air cylinder is used for driving components to move, the welding spots with cracks are detected through vibration, and the detection efficiency and reliability are improved.

The invention discloses a preparation method of a slot wire for a superconducting wire. The preparation method comprises the following steps: manufacturing a copper bar into a copper flat wire through a drawing process; soaking the copper flat wire in a soldering flux, and then washing and air-drying the copper flat wire to obtain a prefabricated copper flat wire; combining the plurality of prefabricated copper flat wires according to the cross section structure of the superconducting wire; performing induction heating welding on the plurality of combined prefabricated copper flat wires through a welding mold to obtain a copper groove wire; performing water cooling, cleaning and drying on the copper slot wire to obtain a copper slot wire with a clean surface; and screening the copper slot line through a laser diameter measuring instrument and eddy current flaw detection equipment to obtain a copper slot line finished product. The copper slot wire with the groove in the surface is obtained by welding the copper flat wire, integrated forming of the structural slot wire is achieved, the production efficiency is improved, welding and finishing forming are carried out by designing dies of different structures, the surface quality of the copper slot wire is improved, the slot wire of a high-precision complex structure is obtained, the drawing speed is high, and the production cost is low. And large-scale production of the copper slot line is facilitated.

The invention discloses a printed circuit board welding spot three-dimensional shape high-precision analysis method and system, and the method comprises the steps: constructing a high-precision three-dimensional model, and obtaining three-dimensional point cloud data; acquiring feature data of a welding spot region, and judging whether pseudo soldering occurs or not through fusion analysis; the surface roughness and reflectivity loss data of a welding spot area are obtained, the welding spot solidification line density is calculated, the cold welding direction disorder degree is obtained, and the cold welding condition is judged; the minimum distance between adjacent welding spots is obtained, and the bridging condition is detected in combination with conductive path curvature verification and material diffusion characteristics; acquiring the surface texture gradient and reflectivity attenuation data of the welding spot, and performing welding spot oxidation treatment; and performing model training through a convolutional neural network, constructing a welding spot analysis model, and obtaining a welding spot analysis result. The method has the advantages that through high-precision three-dimensional scanning and convolutional neural network deep learning, pseudo soldering, cold welding, bridging and oxidation defects of the welding spots of the printed circuit board are accurately detected and analyzed, and the production efficiency and the product reliability are remarkably improved.

The invention discloses ultrasonic high-speed welding equipment and a welding method.The equipment comprises a rack, an electric control mechanism, an executing mechanism and a monitoring mechanism, and the executing mechanism comprises a first lifting assembly, a linear driving part, a welding executing assembly and a second lifting assembly; the linear driving piece is used for generating pressure for pressing the welding execution assembly on the to-be-welded piece, and the welding execution assembly is used for providing high-frequency vibration to achieve ultrasonic welding; the monitoring mechanism is used for monitoring the pressure of the linear driving part on the welding execution assembly, the pressure of the second lifting assembly on the bottom die, the real-time position of the welding execution assembly and the real-time position of the bottom die. The electric control mechanism is used for controlling the execution mechanism to operate according to a preset program and monitoring data obtained from the monitoring mechanism. According to the scheme, the welding efficiency can be improved, and pseudo soldering is reduced.

The invention provides a method for preparing a preset gold-tin soldering ring of a cover plate by using ultrafast laser processing, which comprises the following steps: S1, constructing a surface microstructure of the cover plate by using the ultrafast laser: selecting the cover plate with a specified size, processing by using the ultrafast laser, constructing the microstructure on the surface of the cover plate under nitrogen / argon mixed protective gas, and forming the microstructure on the surface of the cover plate by using the ultrafast laser; then, surface metallization treatment is completed through a multi-stage plating process, and a composite plating layer is formed; and S2, vacuum hot-pressing pre-melting of a welding ring: stamping a gold-tin alloy to form a sheet-shaped welding ring, and then pre-melting the gold-tin welding ring on the cover plate with the microstructure obtained in the step S1 by adopting a vacuum hot-pressing backflow process, so as to form the cover plate with the preset gold-tin welding ring. According to the invention, the assembly process of the cover plate and the gold-tin soldering ring can be simplified, and solder overflow and cover climbing during packaging of the cover plate and the substrate are inhibited.

The invention discloses a tin soldering device for integrated circuit board production, and relates to the technical field of welding equipment.The tin soldering device comprises a base, a supporting frame is arranged at the upper end of the base, a movable seat is arranged in the supporting frame, a mounting frame is arranged at the bottom end of the movable seat, a welding head is arranged in the mounting frame, a feeding pipe is arranged in the mounting frame, and a conical cavity is formed in the feeding pipe; according to the device, scaling powder can be uniformly smeared on the outer wall of the tin bar through the auxiliary mechanism, the tin bar is conveyed through the conveying mechanism while uniform smearing is achieved, meanwhile, the phenomenon that impurities are attached to the surface of a tin wire can be reduced through the sweeping mechanism, and therefore the welding quality of the tin wire is improved. According to the device, the tin bars are conveyed, smeared and cleaned through the linkage mechanism, the welding quality is further improved, the extra power requirement is reduced, and the cost and complexity of equipment are reduced.

The invention discloses electronic detonator spot welding defect detection equipment which comprises a bottom bearing plate, a telescopic fixing structure is arranged at the upper end of the bottom bearing plate, a circulating feeding structure is arranged in the telescopic fixing structure, and a testing structure is arranged at the upper end of the telescopic fixing structure. The telescopic fixing structure comprises side supporting plates symmetrically and fixedly arranged on the top face of the bottom bearing plate. According to the electronic detonator spot welding defect detection equipment provided by the invention, the telescopic fixing structure is arranged, and two groups of transverse electric push rods which are symmetrically arranged drive clamping plates at the upper ends to get close to each other, so that electronic detonator control plates with different sizes on the surface of the top plate can be fixed; and meanwhile, a longitudinal electric push rod is matched to drive a test meter and a test needle head on the top to descend to be in contact with a welding spot on the surface of the control panel, so that whether the welding spot has pseudo soldering or not can be detected, compared with an existing detection device, the detection efficiency of the control panel can be effectively improved, and meanwhile higher adaptability is achieved for control panels of different sizes.

The invention discloses a secondary welding jig of a power module, and relates to the technical field of power module welding, the secondary welding jig of the power module comprises a bottom plate and a limiting assembly, positioning tools are symmetrically arranged at the top of the bottom plate, welding piece positioning pieces are arranged in the positioning tools, and fixing assemblies are connected to the four ends of the top of the bottom plate; the outer side of the lower portion of the fixing assembly is sleeved with a first contact pin positioning plate, the outer side of the upper portion of the fixing assembly is sleeved with a second contact pin positioning plate, and through holes are formed in the first contact pin positioning plate and the second contact pin positioning plate. According to the invention, the positioning tool cooperates with the soldering lug positioning sheet and the pin positioning plate to realize accurate alignment of the substrate, the DBC and the Pin, meanwhile, the rapid connection structure between the limiting assembly and the second pin positioning plate improves the efficiency of transplanting the Pin, and then one-time molding welding is carried out through the sintering furnace, so that the production steps and manual intervention are significantly reduced, the power module assembling efficiency is improved, and the production cost is reduced. And meanwhile, the process complexity and the manufacturing cost are reduced.

The utility model discloses an efficient heat dissipation device convenient to assemble and electronic equipment. The heat dissipation device comprises an upper cover plate, a bottom cavity, a heat dissipation A single sheet and a heat dissipation B single sheet. The upper cover plate is covered with a first solder layer and is provided with a mounting through groove; a second solder layer covers the overlapped side surface of the heat dissipation single sheet A and / or the heat dissipation single sheet B, and the heat dissipation single sheet A and the heat dissipation single sheet B extend downwards at the end part of the corresponding flow channel wall surface to form a connecting part; the radiating A single sheet is provided with a folding sheet which is bent and extends towards the radiating B single sheet; the heat dissipation single pieces A and the heat dissipation single pieces B are inserted into the mounting through grooves in a mutually stacked mode at the top of the upper cover plate, the connecting parts are stacked to define a flow channel connector part, the folding pieces stretch out of the sides, away from the heat dissipation single pieces A, of the heat dissipation single pieces B, the stretching-out ends of the folding pieces make contact with the adjacent heat dissipation single pieces A for positioning, and the bottom cavity is assembled at the bottom of the upper cover plate in a stacked mode. Forming an assembled semi-finished product; and assembling a semi-finished product and performing one-time vacuum welding fixation. In this way, assembling is convenient and fast, and stability is ideal.

The utility model provides a charge coupled device (CCD) tin wire soldering machine, which relates to the technical field of tin wire soldering machines and comprises a machine body, and a support base is fixedly mounted at the bottom end of the machine body. By arranging the machine body, the supporting base, the working platform, the drawer, the lamplight plate, the illuminating lamp, the camera, the lead screw module, the base plate, the Y-direction movement shaft, the Z-direction lead screw, the Z-direction servo motor, the upper silver guide rail and the like, when the equipment is used, manual labor can be effectively solved, manual operation and certain technical errors are reduced, and the production efficiency is improved. And meanwhile, by arranging the fixing plate, the front arm and other structures, any position needing to be welded can be adjusted, and automation and intellectualization are achieved in the welding process. And meanwhile, the welding has the functions of flexible and diversified tin soldering modes, spot welding, drag welding and the like so as to adapt to various high, medium and low-difficulty tin soldering operations, so that the welding quality is improved.

The invention discloses a tin-based alloy preformed soldering lug and a preparation method thereof.The preparation method comprises the following steps that a copper fiber reinforced framework with gradient density distribution is prepared, the copper fiber reinforced framework comprises a high-density area and a low-density area, and hollowed-out gaps are formed through a weaving technology; tin-based slurry with different components and functions is prepared from outer-layer slurry with tin-antimony-copper-nickel as a main body, middle-layer slurry with tin-antimony-copper as a base body and inner-layer slurry with tin-antimony-copper rare earth as a base body, the three kinds of tin-based slurry are sequentially filled into preset areas of hollow-out gaps of a reinforced framework, and a gradient structure material is formed; the gradient structure material is subjected to press-fit forming and post-treatment, and a preformed soldering lug is obtained; a framework is firstly built, then materials are filled, and copper fibers in the soldering lugs provide good support and heat conduction channels, so that a gradient transition structure with continuous change of components and performance is realized, and the integrity, the impact resistance and the bonding strength of the materials are greatly enhanced.

The invention discloses a high-speed cable welding spot pseudo soldering detection device and method, and the device comprises a product fixing mechanism which is used for fixing a high-speed cable; the movement mechanism comprises an X-direction movement module and an oblique movement module mounted at the moving end of the X-direction movement module; according to the invention, the visual inspection mechanism is used for identifying the actual position of a welding spot and compensating a test point in real time, so that the positioning error caused by poor repeated precision of manual feeding and part tolerance is thoroughly eliminated, a test pen point can be accurately aligned with each welding spot, and the consistency and accuracy of detection are ensured from the source; the pressure sensor and the displacement sensor are adopted to synchronously collect data, judgment is performed by analyzing the slope of a pressure-displacement curve, the unique mechanical property mutation of the pseudo soldering point can be sensitively captured, the judgment basis is scientific and objective and is far superior to qualitative judgment manually based on hand feeling and experience, and the detection result is extremely reliable.

The utility model aims to provide an IGBT (Insulated Gate Bipolar Translator) module soldering lug jig, which is used for meeting the requirement of welding a first product part, a second product part, a chip and the like of an IGBT module at one time, and comprises a base, a positioning bolt, a first positioning frame and a second positioning frame which are stacked in sequence, wherein the base is provided with a positioning hole for assembling a positioning bolt, the first positioning frame is provided with a positioning hole matched with the base, and a through accommodating part is arranged in the first positioning frame; the second positioning frame is arranged in the containing part, the shape of the second positioning frame is matched with that of the containing part, a plurality of chip grooves are formed in the second positioning frame and used for containing chips to be welded, one-time preassembly of all assemblies is achieved by stacking the parts in sequence, and finally the whole jig is placed in vacuum welding equipment. Therefore, one-time welding of the IGBT module can be completed. The problems of low working efficiency and low welding precision caused by repeated welding are solved.

The invention relates to the technical field of battery manufacturing, in particular to an automatic welding mechanism and an automatic assembling and welding production line. The first workbench is rotationally connected to the rack, a plurality of first bearing plates are fixedly arranged on the edge of the first workbench, and the first bearing plates are distributed on the edge of the first workbench in an array mode; the first welding assembly comprises a first welding part and a plurality of first pressing parts, the first welding part is slidably connected to the rack in the vertical direction, the output end of the first welding part is perpendicular to the rotating path of the first bearing plate, and the first pressing parts surround the output end of the first welding part, are slidably connected to the rack and are used for abutting against the convergence disc and the cover plate; according to the application, the confluence disc and the cover plate are ensured to be in close contact and close fit, the problems of pseudo soldering, non-uniform penetration and the like caused by a gap or deviation are prevented, and the uniformity of a welding seam is ensured.

According to the welding machining device and method for the inner net and the outer net of the filter, the welding machining device comprises the machining machine table, the lifting mechanism, the moving mechanism, the roller electrode, the shaft electrode and the hooping mechanism, and complex spatial spiral movement is simplified into single axial movement of the roller electrode in a joint channel; an expensive and complex high-precision multi-axis linkage numerical control system is not needed, only one common motor is needed to drive a roller electrode to linearly walk along a joint channel, inclined joint welding of the filter metal net is completed, a workpiece can be driven to rotate in a pure mechanical mode, the cost is low, the welding efficiency is high, and through a micro forging and pressing mode in advance, the welding efficiency is high. According to the method, a solid metal strip with the width of about 1-2 mm and without through holes is formed, and the solid strip provides a continuous and uniform contact surface for a subsequent roller electrode, so that a constant resistance and ideal current path is provided, controllable and predictable generation of welding heat is realized, and the problems of pseudo soldering and overburning caused by meshes are greatly reduced.

The invention provides a QFN lead frame, a preparation method thereof and a QFN packaging structure, in the QFN lead frame, planar pins are arranged at four corners of the front surface of a frame unit, empennage pins are bent to be perpendicular to the front surface of the frame unit, and the planar pins and the empennage pins form a semi-surrounding structure for each corner of the frame unit. According to the QFN lead frame disclosed by the invention, the stress is dispersed through the semi-surrounding structure, and the cracking and collapse risks are reduced. The planar pin also provides an additional solderable surface, so that the molten solder is easier to wet and attach, and the risk of pseudo soldering or refusing soldering is reduced. According to the QFN packaging structure, by using the QFN lead frame with the semi-surrounding structure on the periphery, the packaging structural strength is enhanced, the packaging four-corner structure is effectively prevented from being broken, and the overall stability of the packaging structure is improved. Because the plane pin and the empennage pin are not wrapped by the molding compound, the QFN packaging structure can dissipate heat through the plane pin and the empennage pin.

The invention discloses a flexible manufacturing and high-precision welding system of intelligent electric meter full-automatic processing equipment, which is provided with an integrated welding tool, and comprises a terminal box automatic feeding unit, a soldering lug feeding and positioning unit, a laser welding unit and the like; a three-dimensional positioning subsystem based on a laser interferometer is adopted to realize submicron positioning and adjust a track in combination with an algorithm, a multifunctional welding integrated device intelligently selects a welding mode and parameters, and a low-heat input welding and thermal deformation compensation subsystem ensures welding precision and reliability; a special soldering lug feeding mechanism, a smooth feeding channel, a high-precision photoelectric sensor and a novel vacuum adsorption device are arranged; the intelligent identification self-adaptive grabbing device realizes accurate grabbing; the integrated welding tool integrates multiple procedures, and welding of multiple parts is completed through one-time clamping; full-automatic welding inspection integrated forming of hard connection of sampling elements of various intelligent electric meter products is achieved, the machining efficiency, the welding precision and the reliability are improved, and the problems of machining of complex parts and the like are effectively solved.

The invention discloses a chip packaging heat dissipation liquid cooling device with a sandwich structure. The chip packaging heat dissipation liquid cooling device comprises a heat dissipation base and a chip welding table located on the heat dissipation base. The chip welding table is a sandwich structure composite plate with copper layers on the upper and lower surfaces, and the heat dissipation base adopts a diamond metal composite plate with a sandwich structure; and the chip welding table is connected with the heat dissipation base in a welding manner. The sandwich structure with high thermal conductivity and an adjustable thermal expansion coefficient is used for replacing a traditional heat dissipation copper bottom plate with low thermal conductivity, the heat transfer capacity and the system heat dissipation capacity of the liquid cooling device can be effectively improved while the size of the cold plate is not increased, and meanwhile the scheme is a low-cost scheme.

The invention relates to the technical field of material detection, and discloses a graphics card welding spot pseudo soldering automatic detection method based on image recognition, and the method comprises the steps: firstly comparing a graphics card visible light image after gray level normalization with an infrared thermal distribution diagram after noise suppression, and obtaining the surface texture and thermodynamic characteristics of a welding spot; and then splicing the two to obtain an associated feature weight matrix, extracting texture and thermodynamic feature vectors of a welding spot region from the associated feature weight matrix, and splicing the texture and thermodynamic feature vectors into a fusion feature matrix according to channel dimensions. And finally, positioning pseudo soldering spot coordinates in combination with the standard soldering spot feature library, and generating a graphics card soldering spot pseudo soldering defect report according to the coordinates and the texture fracture index. According to the process, through multi-feature fusion and comparison, pseudo soldering accurate detection and report generation are achieved; according to the method, the accuracy and the efficiency of insufficient solder detection of the graphics card welding spots based on image recognition can be improved, and a high-precision automatic solution is provided for quality detection of the graphics card welding spots.

The utility model discloses a solder splash scraper mechanism, relates to chip pin tin soldering field, including the assembly plate and the tin bath that is detachably installed at the front end bottom of assembly plate, be equipped with the transversally set transfer subassembly above the assembly plate, the free end of transfer subassembly is detachably equipped with the rotation subassembly, and the rotation subassembly is equipped with the rotation subassembly. The connecting end of the rotating assembly is connected with a scraper in an inserted mode, and the two ends of the assembling plate are each provided with a position sensor. The transferring assembly is used for driving the rotating assembly to horizontally move left and right, tin slag in the tin bath is pushed from the left end to the right end to be accumulated, automatic cleaning of the tin slag is achieved, meanwhile, the rotating assembly is matched with the position sensor to drive the scraper to automatically turn over, the bottom of the scraper is made to be away from the bottom face of the tin bath, and automatic cleaning of the tin slag is achieved. The bottom scraping is prevented when the transferring assembly drives the scraping plate to reset, the automation degree of tin slag cleaning is greatly improved, shutdown is not needed, the working efficiency is improved, and meanwhile the situation of high-temperature scalding is avoided.

The invention provides a high-reliability silver-free AMB ceramic substrate and a preparation method thereof, and the preparation method comprises the following steps: (1) arranging silver-free active metal modified layers on the upper and lower surfaces of a ceramic substrate, and obtaining the ceramic substrate with the silver-free active metal modified layers; and (2) assembling the ceramic substrate with the silver-free active metal modified layer and two copper sheets into a sandwich structure, and performing brazing welding to obtain the high-reliability silver-free AMB ceramic substrate. High-temperature welding is carried out after the silver-free active metal modified layer is arranged, effective bonding between copper and ceramic is achieved, a good metallurgical bonding interface is formed, the high-reliability silver-free AMB ceramic substrate is obtained, the preparation cost is low, and the high-reliability silver-free AMB ceramic substrate is suitable for large-range application and popularization.

The invention relates to a soldering flux temperature control storage method and device, and the soldering flux temperature control storage method comprises the steps: 1, filling a soldering flux storage cabinet with soldering flux; 2, the storage temperature of the scaling powder in the cabinet is controlled; 3, the scaling powder is conveyed to scaling powder spraying equipment from the cabinet; 4, the stock condition of the soldering flux in the soldering flux spraying equipment is monitored in real time, and transmission is automatically stopped after the amount of the soldering flux in the soldering flux spraying equipment reaches a preset value; and when the soldering flux spraying equipment is lack of materials, filling is automatically carried out. A soldering flux temperature control storage device comprises a storage cabinet, a storage tank, a transmission pipeline, a transmission pump and soldering flux spraying equipment. The invention has the advantages that the storage of the soldering flux has a temperature control function, so that the active components of the soldering flux are protected; the scaling powder is automatically conveyed to the scaling powder spraying equipment from the storage tank, the storage tank is supplemented with the scaling powder at regular time, the scaling powder filling time is shortened, and automatic management of the scaling powder is achieved.

The invention discloses an automatic welding device for photovoltaic module processing, and relates to the technical field of welding, according to the automatic welding device for photovoltaic module processing, a photovoltaic module is conveyed through an upper belt type conveying assembly, and a material belt of a passive feeding assembly moves along with the upper belt type conveying assembly and is connected to the photovoltaic module in a pressing mode through a pressing roller structure, so that the material belt can be automatically placed, and accurate laying of the material belt is kept; the problems of welding dislocation and insufficient welding are avoided, a solid foundation is laid for high-quality welding, the conveying assembly drives the automatic positioning assembly to move, the automatic positioning assembly and the inclined panel rotate, the photovoltaic assembly is automatically positioned, stable welding of the photovoltaic assembly is kept, the photovoltaic assembly is conveyed and discharged after being welded, and the welding quality is improved. And the automatic positioning assembly automatically relieves fixation, so that the photovoltaic module can be continuously conveyed, continuous welding operation can be carried out, the material belt is automatically laid on the photovoltaic module, seamless butt joint is achieved for welding operation, the welding efficiency is improved, and powerful support is provided for large-scale and efficient production.

The utility model discloses a conductive wire which comprises at least one strand of conductive wire core, and the conductive wire core comprises a metal conductor and a first filling body which are twisted together. The first filling body is conductive and weldable and comprises aramid fibers, and a metal coating is arranged on the outer surface of each aramid fiber. According to the utility model, the first filling body can be used for filling, conducting and welding, so that the first filling body can reduce the usage amount of the metal conductor on the basis of enhancing the mechanical property of the conductor wire, thereby being beneficial to reducing the cost; and the quality problems of pseudo soldering and false soldering which are easily caused by the adoption of insulating filler in the prior art can be solved.

The invention provides a photovoltaic solder strip, a solar cell string, a welding method of the solar cell string and a photovoltaic module, the photovoltaic solder strip comprises a solder strip base body, the solder strip base body is provided with a welding area, the outer surface of the solder strip base body is coated with a passivation layer, and the passivation layer is arranged on the outer surface of the solder strip base body. A conductive tin layer is arranged on at least part of the surface of one side, far away from the photovoltaic welding strip, of the passivation layer corresponding to the welding area, the conductive tin layer comprises fluoride or phosphide, the conductive tin layer corrodes the passivation layer after being heated to form a connecting through hole, and the conductive tin layer permeates into the connecting through hole to be in butt joint with the welding strip base body. The invention has the advantages of low cost, strong conductivity, good light collection effect and long service life.