45results about How to "Guaranteed electrical performance" patented technology

This utility model proposes a centralized power distribution box for subway tunnels, comprising: a box body and a fixing assembly. A fan is installed on the box body; a window is opened on the box body, and an air inlet assembly is rotatably connected inside the window. The outer wall of the air inlet assembly fits against the inner wall of the window. The air inlet assembly includes two symmetrically arranged air guide chambers, each with a fan-shaped cross-section. A first filter screen is provided on the arc-shaped surface of each air guide chamber, and an opening is provided on each air guide chamber located inside the box body. A limiting plate is provided on each air guide chamber, abutting against the inner wall of the box body. The fixing assembly is mounted on the box body. This utility model's centralized power distribution box for subway tunnels can utilize the piston-like wind effect during subway operation to further accelerate the airflow inside the power distribution box, thereby ensuring the electrical performance inside the power distribution box and reducing the failure rate.

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.

The utility model discloses a tensile cable which comprises an insulating layer and an outer sheath, the outer sheath is arranged on the outer side of the insulating layer, and a conductor is wrapped in the insulating layer; the cable further comprises a reinforcing layer, and the reinforcing layer is attached to the outer side of the insulating layer and is formed by weaving multiple layers of high-strength fibers. The cable further comprises an elastic buffer layer used for buffering the tensile force of the outside to the cable, the elastic buffer layer is composed of an inner sleeve and an outer sleeve which are respectively attached between the reinforcing layer and the outer sheath, and an anti-tensile structure located between the inner sleeve and the outer sleeve interlayer, and the anti-tensile structure is formed by X-shaped anti-tensile belts which are distributed around the circumference of the outer wall of the inner sleeve in an array mode. The two ends of the tensile belt are fixedly connected with the outer wall of the inner sleeve and the inner wall of the outer sleeve respectively, and the outer side of the outer sheath is also provided with a corrugated pipe. The utility model belongs to the technical field of cables, and particularly provides a cable for solving the problems of poor electrical performance and potential safety hazards caused by deformation and damage due to poor tensile property in the prior art.

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 present application relates to the technical field of connector, especially to an electric connector assembly. The electric connector assembly comprises a shell, a PCB adapter plate is arranged in the shell, two or more rows of non-ground cables are electrically and fixedly connected to the PCB adapter plate, two or more rows of connecting pads are arranged on the front and back surfaces of the PCB adapter plate respectively, each row of connecting pads comprises a row of signal pads and ground pads, the core wire of the non-ground cable is electrically and fixedly connected to the signal pad on the front surface, the conductive outer sheath is electrically connected to the ground pad on the front surface, the signal pad and the ground pad on the back surface are used for being electrically connected to the corresponding terminals of a PCB female plate or being electrically connected to the corresponding terminals of an adapter socket and then being electrically connected to the PCB female plate, the PCB adapter plate is internally arranged with a conductive circuit to correspondingly connect the connecting pads on the front and back surfaces of the PCB adapter plate, and the electric connector assembly further comprises a load bottom support which is locked and connected to the shell. The electric connector assembly can realize multi-row high-density wiring and greatly improve the performance of the connector.

This utility model discloses a WLAN antenna structure and a microcomputer, relating to the field of antenna technology. The WLAN antenna structure includes an antenna unit, which includes a dielectric substrate, an antenna ground plane, and radiating stubs. The radiating stubs are connected to the antenna ground plane, and the radiating stubs and the antenna ground plane are located on the same side of the dielectric substrate. The antenna unit is disposed in the microcomputer with the motherboard spaced apart and isolated from each other, and is connected by a feed line.

The invention provides a solar cell and a photovoltaic module. The solar cell comprises a silicon substrate, a doped semiconductor layer, an anti-reflection layer and an electrode, the electrode comprises a seed layer and a transmission layer; the doped semiconductor layer is arranged on at least one surface of the silicon substrate; an anti-reflection layer is arranged in at least partial region of one side, deviating from the silicon substrate, of the doped semiconductor layer; the surface of the doped semiconductor layer comprises a target region without an anti-reflection layer; the seed layer is arranged on the side, away from the silicon substrate, of the doped semiconductor layer and at least covers the target area, and the transmission layer is arranged on the side, away from the doped semiconductor layer, of the seed layer; the height of the position in the edge region of the seed layer is greater than the height of the position, deviating from the edge region, in the seed layer. According to the design, the blocking effect of the seed layer on the transmission layer can be improved, and the electrical performance of the solar cell is ensured.

This utility model discloses a cable for robot conduits, comprising: insulated core wires, two insulated core wires twisted together to form a twisted pair, a first PTFE tape wrapped around the twisted pair, a first wound shielding layer wound around the first PTFE tape, a first non-woven fabric wrapped around the first wound shielding layer, four sets of twisted pairs wrapped with the first non-woven fabric twisted circumferentially around a central filler rope to form a cable, three composite filler ropes and one ground wire filling the four gaps between the four sets of twisted pairs in the cable, the composite filler ropes and the ground wire having the same diameter, a second PTFE tape wrapped around the four sets of twisted pairs in the cable, a second wound shielding layer wound around the second PTFE tape, a second non-woven fabric wrapped around the second wound shielding layer, and a sheath extruded onto the second non-woven fabric. This utility model has excellent bending resistance, torsion resistance, and tensile strength, and can maintain good shielding performance even under frequent bending and torsion.

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.

The utility model relates to electrician technical field, and specifically disclose a kind of extra-high voltage isolating switch shield of asymmetric layered structure, pass through shielding device design, to reach the effect of equipment closure, accurate control asymmetric electric field, solve the problem of "local electric field concentration", give consideration to "high insulation" and "partial discharge protection", adapt complex insulation scene, strengthen "mechanical performance adaptability", cope with asymmetric load, optimize "environmental tolerance", solve the problem of "local corrosion or wear", reduce "corona loss" and "temperature rise risk", adapt extra-high voltage energy-saving demand, first annular frame and second annular frame are used to guide component rotation, optimize electric field distribution, inhibit corona and insulation breakdown, isolate external pollutants, protect key components, resist external force impact, maintain structural stability, optimize current path, reduce local overheating.

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.

The invention belongs to the technical field of semiconductor manufacturing, relates to a contact hole and a forming method thereof, and aims to solve the problems of over-etching of a gate contact hole, side wall loss of a shared contact hole and'eating through 'of the bottom of a gate in the prior art. The method comprises the following steps: firstly, forming a metal gate and a side wall on substrate silicon, and etching to regulate and control the height of the metal gate, so that the height difference between the metal gate and the side wall is equal to the thickness of a second contact etching stop layer; sequentially depositing the stop layer and a second interlayer dielectric layer, and completely retaining the stop layer after polishing; depositing a contact hole lamination layer and etching, and taking the stop layer as a stop interface; and finally, etching the stop layer to accurately form two types of contact holes. According to the process, through the closed-loop design of height difference presetting, stop layer deposition and step-by-step etching, over-etching is completely eradicated, meanwhile, the side wall loss of the shared contact hole is reduced, the bottom is prevented from being broken through, and the performance and reliability of the device are guaranteed.

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 application relates to the technical field of connectors, in particular to a PCB adapter plate and a groundless high-speed cable connector. The groundless high-speed cable connector comprises a PCB adapter plate and two or more rows of groundless cables electrically and fixedly connected to the PCB adapter plate. The front and back surfaces of the PCB adapter plate are respectively provided with two or more rows of connecting pads arranged in a row in the longitudinal direction and arranged side by side in the transverse direction. Each row of connecting pads comprises a row of signal pads and ground pads. The core wires of the groundless cables are electrically and fixedly connected to the signal pads on the front surface, the conductive outer sheath is electrically connected to the ground pads on the front surface, and the signal pads and the ground pads on the back surface are used for abutting and electrically connecting corresponding terminals of an external connector. The PCB adapter plate is internally provided with conductive circuits to correspondingly connect the connecting pads on the front and back surfaces of the PCB adapter plate. The groundless high-speed cable connector can realize multi-row high-density wiring and greatly improve the performance of the connector.

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.

The application discloses a battery module assembly, which comprises a protective shell, a connector and a flexible circuit board, the protective shell is wrapped outside the connector, the flexible circuit board is installed on the top surface of the connector, the protective shell comprises a support and a cover plate, the connector is installed on the support, the cover plate is riveted on the top of the support, and the cover plate presses the flexible circuit board on the connector. The application provides all-round physical protection for the connector through the surrounding wrapping structure, and effectively isolates external collision and mechanical impact which may cause certain damage.

The invention provides a low-cost lightweight low-altitude radar antenna, which comprises an antenna housing, an array plane frame, an array plane front end, electronic equipment and a maintenance cover plate, the front end of the array surface comprises a plastic slotted antenna unit, a support structure, a power divider and a metal reflecting plate; the plurality of slot antenna units are fixed on one side of the reflecting plate in a tiled manner, the supporting structure is fixed on the other side of the reflecting plate, and the power divider is mounted on the supporting surface of the supporting structure; the slot antenna unit, the supporting structure and the power divider are respectively provided with a cavity, the inner surface of each cavity is metalized, and the cavity and the reflecting plate jointly form a waveguide cavity structure; the antenna housing is made of plastic and is bonded and sealed with the reflecting plate; an outer frame body in the array plane frame is fixed with the reflecting plate; the electronic equipment is fixed on the surface of the cold plate in the array plane frame and is in blind matching connection with the power divider; and the maintenance cover plate is fixedly connected with the outer frame body. According to the invention, the targets of light weight and low cost of the antenna array surface are achieved on the whole.

The invention discloses a contour path planning method for structural circuit integrated manufacturing, a storage medium and equipment, and the method comprises the steps: importing slice contour data of a structural circuit integrated model, extracting all closed contours of a structural circuit from each layer of slice contour data, and calculating the geometric center of each closed contour; a closed contour tree data structure is constructed according to the contour data of each layer of slices, contour offset is set according to the inclusion relation between closed contours, and a printing filling contour is generated; geometric centers of closed contours in each layer of slice contour data form a node set, and an optimal global contour path printing sequence is determined through a genetic annealing algorithm; according to the optimal global contour path printing sequence, the printing starting point of each closed contour is optimally selected, and an optimal printing starting point set of all the closed contours is obtained; and according to the optimal global contour path printing sequence and the optimal printing starting point set, the movement track of the printing head is determined, and the printing filling contour is printed.

This utility model relates to the field of cable manufacturing technology and discloses a guiding and positioning device for synchronous insulation extrusion of multi-strand cables. It includes a mounting base, a housing fixedly connected to the top of the mounting base, and an L-shaped lifting plate slidably fitted onto the top of the housing. A strip-shaped hole adapted to the L-shaped lifting plate is opened on the top of the housing. A connecting block is fixedly connected to the top of the L-shaped lifting plate, and a mounting ring is fixedly connected to the top of the connecting block. Three positioning mechanisms are equidistantly arranged on the top of the mounting ring. Each positioning mechanism includes a threaded rod screwed onto the mounting ring, and a screw nut adapted to the threaded rod is fixedly fitted onto the mounting ring. A connecting seat is rotatably connected to one end of the threaded rod located inside the mounting ring. This utility model improves the positioning accuracy during insulation extrusion of multi-strand cables, ensuring a stable and uniform relative distance between the three strands. It effectively avoids problems such as uneven insulation thickness and insufficient filling caused by core misalignment, convergence, or dispersion, thus guaranteeing the electrical performance and structural strength of the cable.

The application relates to a DNA self-assembly nano-floating gate type 3D NAND structure, which comprises a substrate, a periodic stack structure arranged on the substrate, the stack structure comprising a plurality of first insulating medium layers and nano-floating gate storage structures alternately stacked, a plurality of through holes penetrating through the stack structure, a center channel layer being arranged on the side wall of the through hole, and a center insulating medium layer being filled in the center channel layer; wherein the nano-floating gate storage structure comprises a tunneling medium layer contacting the center channel layer, a blocking medium layer wrapping the outside of the tunneling medium layer, and a gate word line metal located outside the blocking medium layer, and a carbon nanotube floating gate layer is arranged in the tunneling medium layer. The structure can significantly improve the storage density and size miniaturization ability, and greatly reduce the working voltage and driving power consumption.

The embodiment of the invention discloses a control device and electronic equipment, and a functional part is arranged in an isolation cavity of a central assembly so as to protect the functional part. The first movement gap formed between the center assembly and the knob part can effectively reduce abrasion between the center assembly and the knob part during rotation of the knob part. Therefore, the isolation cavity and the first movement gap are arranged in a separated mode, when water or dust or other invading objects enter the first movement gap, the invading objects can be effectively prevented from making contact with the functional component, and then the electrical performance of the functional component is guaranteed. And meanwhile, the control device has a relatively high waterproof grade.

The invention discloses a preparation method of a high-flexibility semiconductor substrate. The preparation method comprises the following steps: cleaning a first surface and a second surface of a silicon-based material layer; respectively coating the cleaned first surface and second surface with a high polymer material, and carrying out drying treatment to correspondingly form a first high polymer layer and a second high polymer layer; the surfaces of the first polymer layer and the second polymer layer are coated with metal materials respectively, drying treatment is carried out, and a first metal layer and a second metal layer are correspondingly formed; and annealing the semiconductor substrate composed of the first metal layer, the first polymer layer, the silicon-based material layer, the second polymer layer and the second metal layer to obtain the high-flexibility semiconductor substrate. By adopting the technical scheme provided by the invention, the high-flexibility semiconductor substrate can be prepared, so that the flexibility and the strength of the semiconductor substrate are improved while the electrical property of a silicon material is maintained, and the reliability and the process controllability of a semiconductor device are improved.

The utility model discloses a built-in resistor TYPE-C connector. The built-in resistor TYPE-C connector comprises an upper-row terminal assembly and a lower-row terminal assembly, the lower-row terminal assembly comprises a first lower terminal, a second lower terminal, a third lower terminal and a fourth lower terminal; the first lower terminal is provided with a first upper contact part, and the other first lower terminal is provided with a first lower contact part; the second lower terminal is provided with a second upper contact part, and the other second lower terminal is provided with a second lower contact part; the third lower terminal is provided with a third lower contact part; the fourth lower terminal is provided with a fourth lower contact part; the upper-row terminal assembly comprises a first upper terminal and a second upper terminal; the first upper terminal extends to a position right above the third contact part; the second upper terminal extends to a position right above the fourth contact part; the tail end of the first upper terminal is connected with the tail end of the fourth lower terminal; resistance elements are electrically connected between the tail end of the third lower terminal and the tail end of the second upper terminal and the tail end of the corresponding first lower terminal. User requirements are met, and electrical reliability is high.

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 invention relates to the technical field of sensor structures, in particular to an intelligent TMAP sensor which comprises a main shell. According to the invention, the circuit board at the position of the pressure sensor is provided with the through hole, and gas generated during welding can be discharged from the through hole, so that the situation that the welding position is hollow is avoided, and the welding strength and the electrical performance of the pressure sensor are ensured; the welding gas amount is monitored in real time through the exhaust monitoring and optimizing module, dynamic analysis is conducted, and the exhaust demand is accurately predicted; on the basis of a gas state equation and an oxygen correction model, whether the solder paste dosage is safe or not is automatically judged by combining comparison of real-time data and an exhaust threshold value; once the standard exceeds the standard, an alarm is given and process parameters are limited, so that welding holes are prevented from the source; through the signal diagnosis and response module, dual-channel signal synchronous acquisition and intelligent diagnosis are realized by relying on a dual-routing structure; through noise filtering, deviation analysis and trend judgment, signal abnormity is recognized in real time, and faults are judged in a grading mode.

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.

The application relates to a high-nickel cobalt-free positive electrode material and a preparation method and application thereof. 1‑x‑y Fe x Mn y O2‑Ce&Cr@CeO2; the high-nickel cobalt-free positive electrode material comprises a positive electrode material LiNi 1‑x‑y Fe x Mn y O2 and a surface-coated CeO2 layer; wherein 1-x-y>0.8, 0.05<=x<=0.15, 0.05<=y<=0.15; the doping concentration of Ce and Cr elements is independently 0.5mol%-3mol%. The prepared high-nickel cobalt-free positive electrode material is applied to the field of lithium ion batteries, enhances lithium ion storage capacity and structural stability, reduces transition metal dissolution, reduces internal polarization resistance of the material, and exhibits excellent cycle stability and rate performance.

The present disclosure relates to the technical field of batteries, and discloses a single battery and a battery pack; the single battery comprises a pole member, a battery cell and at least two groups of welding connection groups; the battery cell comprises a battery cell main body and a tab, and the tab is connected to the battery cell main body; each welding connection group comprises at least two welding connection structures, and the welding connection structures are connected between the pole member and the tab; the minimum distance between two adjacent welding connection groups is a, the minimum distance between the farthest two welding connection structures in the same welding connection group is d, and the value of a×d is greater than or equal to 4 mm 2 less than or equal to 68 mm 2 The single battery guarantees the overcurrent capacity between the welding connection structure and the tab, reduces the heat generation, and avoids thermal runaway due to serious heat generation during charging and discharging.

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.