19results about How to "Guaranteed electrical performance" patented technology

This utility model discloses a wire-pair shielded data transmission cable with high transmission performance, comprising: a cross-shaped frame, the four isolation walls of the cross-shaped frame having different wall thicknesses, a buffer groove provided at the top of the isolation wall, and a folded groove aligned with the bottom of the buffer groove on the outer wall of the isolation wall, a filling rope and a set of twisted core wires arranged in the cavity between two adjacent isolation walls, aluminum-plastic composite tape wrapped around the twisted core wires, and tinned copper wire braided tape woven on the cross-shaped frame, the tinned copper wire braided tape being in direct contact with the aluminum surface of the aluminum-plastic composite tape, the tinned copper wire braided tape abutting against the twisted core wires and compressing the buffer groove, the groove wall of the buffer groove bending along the folded groove and abutting against the tinned copper wire braided tape after being compressed by the tinned copper wire braided tape, a wrapping tape wrapped around the tinned copper wire braided tape, and a sheath extruded onto the wrapping tape. This utility model has a simple structure and excellent signal shielding performance both internally and externally.

This invention discloses a cable tray box and a handcart-type switch cabinet having the same, comprising a box body, a stripping component, an anti-pull component, and a straightening component. The stripping component, installed inside the box body, can strip the cable sheath. The anti-pull component, installed inside the box body, limits the cable winding and prevents the other end of the cable from being pulled or causing the cable end with the terminal to fall off during the stripping process. The straightening component, installed inside the box body, straightens the bent cable, restoring it to a straight state. By integrating the stripping component, the anti-pull component, and the straightening component, this invention achieves precise stripping, effective anti-pull, and automatic straightening, thereby improving cable routing efficiency, safety, and reliability. It solves the problems of inaccurate stripping, easy pulling of cables leading to loosening, and bending caused by clamping that exist in traditional handcart-type switch cabinets during the cable routing process.

The utility model discloses a 90 degree welding copper strip type 4 core plastic connector with better air tightness and contact stability. The technical scheme is that the socket shell is arranged at 90 degree angle, the power plug pin terminal is arranged in the socket shell and the socket rubber core is arranged at the lower end of the socket shell, the power plug pin terminal is also arranged at 90 degree angle and is integrally formed in the socket shell, the power female terminal is arranged in the socket rubber core and is connected with the lower end of the power plug pin terminal, and the power female terminal is crimped with the power welding plug pin at the rear end.

This utility model provides an immersion washing device for circuit board production, relating to the field of circuit board manufacturing technology. The immersion washing device includes a filter box and an immersion tank. The bottom surface of the immersion tank is fixedly connected to the filter box. A filtration mechanism is installed inside the filter box. The filtration mechanism includes a fixing frame, the outer surface of which is fixedly connected to the filter box. A first filter plate and a second filter plate are fixedly connected to the inner wall of the fixing frame. A drive roller is rotatably connected to the inner wall of the fixing frame. Through the coordinated arrangement of the components in the filtration mechanism, this immersion washing device enables filtration during the recycling of the working fluid, effectively separating and retaining impurities generated during immersion washing, significantly improving the cleaning efficiency of the circuit boards, ensuring a higher standard of surface cleanliness, and thus effectively guaranteeing the production quality and electrical performance of the circuit boards.

Provided is a joint of a copper terminal and an aluminium conductor. A copper terminal connecting member of the joint is connected to a conductive core of the aluminium conductor by means of a transition welding layer, and the joint can also be provided with a reinforcing welding layer. Further provided is a method for preparing the joint using plasma arc welding. According to the invention, the connection portion of the copper terminal with the aluminium conductor is filled with solder in a plasma arc welding manner, such that copper and aluminium are connected by means of the solder. Damage to an aluminium oxide layer during welding increases the conductivity and can also isolate the copper terminal and the aluminium conductor, thus preventing an electrochemical reaction between the copper and the aluminium, prolonging the service life of the joint of the copper terminal and the aluminium conductor, and ensuring the mechanical and electrical performances of the connection structure.

The invention relates to the technical field of wind power cables, in particular to an offshore wind power cable with a grid reinforcing layer and rated voltage of 155kv, which sequentially comprises a conductor, a semi-conductive nylon tape I, a conductor shield, an EPR insulator, an insulation shield, a semi-conductive nylon tape II, a tinned copper wire shield, a semi-conductive nylon tape III, an inner sheath and an outer sheath from inside to outside, and a grid reinforcing layer is arranged between the inner sheath and the outer sheath. According to the offshore wind power cable with the grid reinforcing layer and the rated voltage of 155kv, the grid reinforcing layer is of a customized terylene woven grid belt structure, after dipping treatment is conducted through special temperature-resistant glue, the performance is stable at the high temperature of 160-200 DEG C, the tensile strength is larger than or equal to 800N / 5cm, compared with an existing common terylene reinforcing belt, the high-temperature tensile strength is improved by 50% or above, and the rated voltage of 155kv is greatly improved. The problem that an existing reinforcing layer is poor in temperature resistance is effectively solved. Through plasma surface cleaning, gradient drying and shaping and precise glue material adaptation, the bonding strength of the grid reinforcing layer and the inner and outer sheaths is remarkably improved, and an integrated structure is formed between the layers.

This application provides a common-mode inductor, a switching power supply, an inverter, and communication equipment. The common-mode inductor includes a U-shaped magnetic core, an enameled flat copper wire winding, and a fixing structure. The enameled flat copper wire winding is wound vertically on the U-shaped magnetic core. This vertical winding method allows the enameled flat copper wire to be wound perpendicular to the plane of the U-shaped magnetic core. This winding method can improve the filling rate of the winding, reduce the space occupied by the winding, and also help reduce eddy current losses and proximity effects at high frequencies, thus improving the high-frequency performance of the inductor. The enameled flat copper wire has good conductivity and insulation properties, which can meet the operating requirements of the inductor under high current and high voltage environments. The fixing structure is used to fix the U-shaped magnetic core and the enameled flat copper wire winding, ensuring the stability of the winding's position on the U-shaped magnetic core and preventing loosening or displacement of the winding during inductor operation, thereby ensuring the electrical performance and mechanical stability of the inductor.

The utility model discloses a kind of BGA automatic welding equipment based on multi-angle image positioning, it is related to automatic welding technical field, including workbench, workbench upper portion is provided with protective shell, protective shell is provided with upper portion camera and upper portion heating wire inside, upper portion heating wire lower portion is provided with upper portion temperature control probe, workbench upper portion is provided with upper portion X axis and upper portion Y axis, workbench is provided with infrared heating area inside, infrared heating area upper portion is provided with lower portion heating head Z axis, lower portion heating head Y axis and lower portion heating head X axis, infrared heating area upper portion is provided with heating mechanism, in the process of alignment welding, upper portion camera first determines PCB pad position using navigation function, after material taking of mounting suction nozzle, move to upper portion camera, lower portion camera identifies BGA pad, provide basis for accurate mounting, make chip mounting position error extremely small, effectively improve welding quality, reduce problem such as false welding, offset, guarantee electrical performance and stability of electronic product.

This utility model relates to a recyclable, green, and environmentally friendly low-voltage power cable, belonging to the field of environmentally friendly cable technology. The technical solution is as follows: the cable conductor (1) is externally extruded with a modified polypropylene insulation reinforcement layer (2) to form the core; multiple cores are cabled together and then externally wrapped with a polypropylene wrapping tape (4); polypropylene filler rope (3) is filled between the polypropylene wrapping tape (4) and the cores; and a modified polypropylene outer sheath (5) is externally extruded from the polypropylene wrapping tape (4). The positive effects of this utility model are: both the insulation layer and sheath layer of the cable use high-performance modified polypropylene materials, and the cable filler uses polypropylene filler rope, both of which have low smoke, halogen-free, and low toxicity characteristics. While increasing the overall insulation protection performance and mechanical properties of the cable, the main metallic and non-metallic materials of the cable can be recycled, reducing the cost of waste cable disposal and environmental pollution.

The application discloses a solar cell, a seed layer structure and a preparation method thereof and a photovoltaic module, and belongs to the photovoltaic technical field. The solar cell comprises a bottom silver-rich area, an intermediate transition area and a surface copper-rich area; the silver content of the bottom silver-rich area is greater than or equal to 75at%; the porosity of the bottom silver-rich area is less than or equal to 10%; the intermediate transition area comprises a silver-copper eutectic phase; the copper content of the surface copper-rich area is greater than or equal to 45at%; and the porosity of the surface copper-rich area is 20% to 50%. The seed layer can greatly reduce the silver content compared with a conventional pure silver seed layer, and can significantly reduce the material cost under the premise of ensuring the electrical performance; in addition, the seed layer structure has the transition structure of the bottom silver-rich area, the intermediate transition area and the surface copper-rich area, and is more conducive to improving the interface bonding strength, reducing the contact resistance and improving the photoelectric effect of the solar cell compared with the pure silver seed layer.

The application discloses an ultrasonic dust removal device and a screen printing equipment, which are used for removing the impurities on the surface of a silicon wafer on a conveying belt of the screen printing equipment. The ultrasonic dust removal device comprises an ultrasonic air knife, the ultrasonic air knife comprises a first end and a second end, the first end is provided with an air outlet, the air outlet is arranged towards the conveying belt, the ultrasonic air knife is arranged obliquely, along the conveying direction of the conveying belt, the ultrasonic air knife gradually moves away from the conveying belt from the first end to the second end, and a dust collector is arranged upstream of the ultrasonic air knife along the conveying direction of the conveying belt, and the dust collector is used for adsorbing the impurities stripped by the ultrasonic air knife. The high-frequency vibration and cavitation effect of the ultrasonic air knife can improve the removal capacity of the micro-particles, avoids scratching the surface of the silicon wafer, the dust collector prevents the impurities from spreading in the working environment, the effective removal of the impurities on the surface of the silicon wafer reduces the abrasion of the printing screen caused by the impurities, reduces the probability of occurrence of the bad phenomenon, thereby prolongs the service life of the printing screen and improves the production efficiency.

The utility model relates to the technical field of crystal resonators, in particular to a glue stirring machine for crystal resonator production, which comprises a tank body and a heating device, a servo motor is arranged on the upper surface of the tank body, a driving end of the servo motor is fixedly connected with a stirring rod, the heating device is arranged on the surface of the tank body, and the heating device comprises a water inlet pipe. The water inlet pipe is fixedly connected with the tank body, the inner wall of the tank body is provided with a cavity, one end, close to the water inlet pipe, of the tank body is fixedly connected with a water pump, the water outlet end of the water pump is communicated with the cavity, the water inlet pipe is communicated with the cavity, and the water outlet end of the water pump is fixedly provided with a valve. The stirring process is guaranteed to be smoothly carried out, the glue is maintained at a proper temperature, stable physical and chemical properties such as viscosity and fluidity of the glue are ensured, and stirring is more uniform, so that the quality of the glue in crystal resonator production is improved, and key indexes such as sealing and electrical performance of a final product are guaranteed.

This utility model discloses a charging pile assembly with a dual waterproof structure, relating to the field of charging pile technology. It includes a charging pile mechanism, comprising a charging pile body with a socket installed on it, a connecting wire connected to the charging pile body, and a charging gun connected to one end of the connecting wire; and a first waterproof mechanism installed on the surface of the charging gun, including a transmission component fixedly connected to the surface of the charging gun. This utility model provides waterproofing and dustproofing for the charging gun before it is inserted into the charging pile or vehicle charging port, protecting the charging gun and preventing dust and water from easily entering the charging gun head, thus reducing the possibility of poor contact during subsequent use. The second waterproof mechanism provides waterproofing and dustproofing for the socket after the charging gun is unplugged, reducing the easy entry of dust, rainwater, and other debris, thus minimizing the possibility of them indirectly entering the charging gun and ensuring the electrical performance of the charging gun during charging.

This invention belongs to the field of semiconductor display device fabrication technology, specifically relating to a method for patterning a fully printed film layer. This invention combines printing with solution coating, allowing printing to be performed on only a portion of a large area while the majority is coated, achieving fully printed film layer patterning. This results in a short process time, high cycle time, and no need for expensive equipment. Furthermore, the method provided by this invention poses no risk of contamination at the film interface, protecting the interfacial properties of the film surface and ensuring the electrical performance of the device.

This invention relates to an intermediate transformer for testing, comprising a core, a low-voltage winding, a high-voltage winding, a voltage-regulating winding, and an oil tank. The core is a single-phase three-column structure. The low-voltage winding, high-voltage winding, and voltage-regulating winding are sequentially nested on the outer side of the core from the inside out, with an insulation structure between the low-voltage winding and the high-voltage winding. The low-voltage winding is used to connect to a low-voltage frequency converter power supply. The high-voltage winding consists of two coils with the same number of turns arranged axially, with a formed insulation device at the middle of the two high-voltage windings. The two high-voltage windings are sequentially connected to the voltage-regulating winding via a series-parallel switch and a forward / reverse switch for outputting multi-stage test high voltage. The voltage-regulating winding adopts an axial two-way series continuous winding structure. The oil tank is a cylindrical structure without an external radiator, and a small oil conservator is located on the upper part of the tank. This invention enables wide-range multi-stage high-voltage output with small capacity and small volume, high insulation reliability, and is suitable for various testing scenarios of ultra-high voltage equipment.

This invention provides a differential component module and a cable connector. The differential component module includes at least two differential components and a middle housing. The middle housing has at least two first mounting slots, each for accommodating and positioning one of the differential components. At least two of the differential components are fixedly connected to the middle housing to form an integral single-row module. This invention simplifies the installation process by fixing multiple differential components to a middle housing to form an integral single-row module. During subsequent installation, operators can directly manipulate the entire module instead of handling individual differential components one by one. Furthermore, since multiple differential components are fixed as a whole, their swaying amplitude during installation into the housing is significantly reduced, and their position is easily controlled, effectively reducing installation difficulty and improving assembly efficiency and product yield.

This application provides a method and related apparatus for adjusting the oil channels of a transformer spiral coil, relating to the field of transformer design technology. The method includes: determining the zoned containment boundary of the target coil based on limit size configuration, where the zoned containment boundary characterizes the zoned size limit in axial distribution; determining the oil channel containment capacity of each zone based on the target axial size and the zoned containment boundary; determining a bidirectional adjustment range array using the oil channel containment capacity of each zone, where the bidirectional adjustment range array includes the oil channel number adjustment amount of each zone; and traversing the oil channel adjustment range array of each zone to obtain a combination of oil channel number adjustment amounts that satisfy the end-zone linkage constraint, where the end-zone linkage constraint is that the sum of the oil channel number adjustment amounts of non-end-zones lies within the range of the oil channel number adjustment amounts of the end-zone. This application achieves automatic matching and global optimization of oil channel dimensions, improving the efficiency and accuracy of transformer coil design and ensuring the electrical and thermal performance of the product.