75results about How to "Improve current carrying capacity" patented technology

The invention discloses an impact-resistant and distortion-resistant outdoor polyethylene power cable, and relates to the technical field of cables, the impact-resistant and distortion-resistant outdoor polyethylene power cable comprises a cable core, four annularly distributed wire cores are arranged in the cable core, each wire core is composed of an inner-layer conductor, an outer-layer conductor, a heat conduction enhancement layer, an inner enhancement layer and an inner insulation layer, a shielding combination layer is arranged outside a wrapping layer, and a shielding layer is arranged outside the wrapping layer. The shielding combination layer is composed of a high-conductivity metal thin film layer, a nanometer shielding layer and a protective coating, the anti-impact combination layer is arranged outside the shielding combination layer, the anti-impact combination layer is composed of an impact dispersion layer and an energy absorption layer, the anti-distortion combination layer is arranged outside the anti-impact combination layer, and the anti-distortion combination layer is composed of an impact dispersion layer and an energy absorption layer. The anti-distortion combination layer is composed of a core layer and an elastic buffer layer, an outer sheath is arranged outside the anti-distortion combination layer, and the outer sheath is composed of a reinforcing layer, a blocking layer and an outer protective layer, so that the problems that the power cable is poor in impact resistance and distortion resistance and inconvenient to maintain are solved.

The invention relates to a driving control circuit and a switching power supply, the driving control circuit comprises a current sampling circuit and a light-load wave sealing circuit, the current sampling circuit is electrically connected with the light-load wave sealing circuit, the current sampling circuit samples current flowing through a load to obtain sampling current, and when the sampling current is greater than a current threshold value, the light-load wave sealing circuit is electrically connected with the light-load wave sealing circuit; the light-load wave sealing circuit outputs a first control signal to enable the second group of switching tubes to work based on a received second driving signal, so that the switching power supply rapidly quits the light-load wave sealing state, the current-carrying capacity of the switching power supply is rapidly improved, and when the sampling current is smaller than or equal to a current threshold value, the switching power supply is switched off. And the light-load wave sealing circuit outputs a second control signal to drive the second group of switching tubes to stop working, so that the second group of switching tubes are ensured to be closed in a light-load state, the switching loss during light load is effectively reduced, and the light-load energy efficiency is improved.

The utility model discloses a small-size heavy-current golden finger connector, which comprises an insulating main body and a plurality of terminal sheets, the insulating main body is provided with a plurality of terminal mounting holes at intervals, the plurality of terminal sheets are respectively inserted into the terminal mounting holes to be fixed, and one end of each terminal sheet is provided with a plurality of contact pins at intervals. One end of each contact pin is bent towards one side surface of the terminal sheet to form an elastic contact arm, an included angle is formed between the elastic contact arm and the contact pin, and the end part of the elastic contact arm is bent to form an arc-shaped contact bulge. According to the double-row multi-contact design, the number of a single PIN is increased to eight, so that the circulating current is more than two times that of an original terminal, the current-carrying and voltage-resistant performance of the terminal is greatly improved, the terminal can be widely applied to a large-current connector, the current-carrying capability and vibration resistance of the large-current connector are improved, and accessories of all parts are simple in structure and low in cost. And large-scale production and assembly are facilitated.

The invention provides a connecting cable, a vehicle and vehicle charging equipment. The connecting cable comprises a cable structure and a flexible cooling pipe at least used for containing a cooling medium. The cable structure comprises a rigid conductor tube and a first insulating layer arranged on the peripheral side of the rigid conductor tube, and the rigid conductor tube is electrically connected between a power supply and a load; the flexible cooling pipe can extend into the rigid conductor pipe through one end of the rigid conductor pipe and is in heat conduction contact with the rigid conductor pipe; and the end part of the cable structure is provided with a fixing piece, and the fixing piece is used for fixing the flexible cooling pipe on the cable structure after the flexible cooling pipe extends into the rigid conductor pipe, so that the current-carrying capability of the connecting cable can be improved.

This utility model belongs to the field of power transmission and distribution engineering technology, specifically disclosing an overhead insulated conductor with a reinforced tensile structure. It includes an aluminum conductor, an insulating separator sleeve fitted over the aluminum conductor, an insulating separator sleeve fixedly connected to the outside of the insulating separator sleeve, and a galvanized copper conductor on the outside of the insulating separator sleeve. It also includes reinforcing ribs, fixing blocks, and an outer protective layer for the conductor. The reinforcing ribs are used to improve the tensile strength of the conductor; the fixing blocks are used to fix the internal structure of the conductor. The beneficial effect of this utility model is that by using a non-metallic aramid fiber reinforcing layer and a glass fiber inner protective layer to jointly bear the load, the mechanical tensile function and electrical conduction function of the conductor are separated. The main tensile force is borne by extremely high-strength, extremely lightweight synthetic fibers, enabling the conductor to have a tensile strength and fatigue resistance far exceeding that of traditional steel-cored aluminum stranded wires of the same diameter, while significantly reducing the self-weight of the conductor and the load on the tower.

This invention relates to a high-temperature superconducting cable, comprising: a metal skeleton, high-temperature superconducting tape, impregnated filler, a conductive metal layer, and a metal armor layer; a central cooling channel is provided in the center of the metal skeleton; the high-temperature superconducting tape is stacked into strands, with the entire strand spirally wound tightly against the metal skeleton; a conductive metal layer is wound around the outer side of the high-temperature superconducting tape, and a metal armor layer is also provided; the impregnated filler is filled into the gaps between each strand of the high-temperature superconducting tape using a vacuum pressure impregnation process. Compared with the prior art, in this invention, the high-temperature superconducting tape is stacked into strands and wound on the metal skeleton, and the neatly stacked tape is less susceptible to mechanical damage; there are gaps between the strands of the high-temperature superconducting tape, and the size of the gaps can be changed when the cable is bent, so the high-temperature superconducting tape is less likely to be damaged by excessive stress when the cable is bent; after the cable is bent, the gaps between the strands of the high-temperature superconducting tape can be filled by vacuum pressure impregnation, improving the thermal conductivity and mechanical strength of the cable.

This utility model relates to a staged melting battery connector for electrically connecting a battery cell and a cover plate. It includes a connector body made of conductive metal and at least one intermediate connecting segment. The connector body includes a first conductive portion, a second conductive portion, and an intermediate conductive portion connecting the first and second conductive portions. Each intermediate connecting segment is disposed between the first and second conductive portions, and both ends of each intermediate connecting segment are electrically connected to the first and second conductive portions, respectively. The cross-sectional areas of each intermediate connecting segment are unequal and all smaller than the cross-sectional area of ​​the intermediate conductive portion. The battery connector of this application has a high current-carrying capacity at normal operating temperature and effectively avoids additional heat generation caused by an excessively small current-carrying area. In the event of overcurrent due to faults such as short circuits, the intermediate connecting segments are melted sequentially until the intermediate conductive portion melts, while the overall melting speed still meets the requirement for rapid melting, improving equipment operating safety.

The invention discloses a high-power connector with low resistance and high heat dissipation for quick connection, and relates to the field of connectors, the high-power connector comprises a support frame, reeds and busbar clamping bodies, the two busbar clamping bodies are assembled on the support frame, the busbar clamping bodies are integrally formed stamping parts, and the surfaces of the busbar clamping bodies are not provided with holes, so that the high-current passing capacity is ensured; a clamping space is formed between the two busbar clamping bodies, a reed is assembled between one end, far away from the clamping space, of each busbar clamping body and the supporting frame, a rear contact is formed at one end of each busbar clamping body, a front contact is formed at the other end of each busbar clamping body, and under the action of the reeds, the busbar clamping bodies are in contact with the supporting frame. The rear contacts of the two busbar clamping bodies are enabled to clamp the second busbar, the busbar clamping bodies are enabled to be unfolded by taking the rear contacts as rotating points, and the front contacts of the two busbar clamping bodies are enabled to clamp the first busbar, so that the problem of position errors of the first busbar and the second busbar caused by manufacturing tolerance or external reasons is solved, normal transmission of current is realized, and an abnormal interruption phenomenon is avoided.

The utility model relates to the technical field of wire-to-board connectors, and discloses a small dustproof wire-to-board, which comprises a main body and a dustproof cover arranged on the main body, a wire harness A is arranged at the rear side of one side of the main body, a wire harness B is arranged at the rear side of one side of the main body, and the wire harness A and the wire harness B are horizontally arranged. The inner ends of the wire harness A and the wire harness B are provided with terminals, the structural size is small, more structural limitation requirements can be met, the current-carrying capacity is strong, 140A / Pin can be achieved, two types of left outgoing lines and right outgoing lines are provided for customers to select, the dustproof cover is designed, a certain protection function and a short circuit prevention effect are achieved, the wire harnesses are protected, separation is prevented, and the service life of the wire harness is prolonged. And the current-carrying capability and the stability are improved by using an ultrasonic welding technology.

The utility model discloses an aluminum electrolytic capacitor with high current-carrying capability, comprising a bearing unit which comprises an aluminum shell and a sealing cover fixedly connected to the bottom of the inner cavity of the aluminum shell, the bottom of the sealing cover is riveted with two guide pins penetrating through the sealing cover, the inner cavity of the aluminum shell is provided with a core package and an auxiliary unit, and the core package is provided with a plurality of through holes; the limiting structure comprises two limiting rings fixedly connected to the inner wall of the aluminum shell, the two limiting rings are arranged at the top and the bottom of a core package in a sleeving mode respectively, the side walls of the two limiting rings are each provided with a plurality of notches which are annularly distributed at equal intervals, and the inner walls of the two limiting rings are each provided with an intercepting face in a cutting mode. According to the utility model, the core cladding is inserted into the inner rings of the two limiting rings, so that the core cladding is bound by the limiting rings and is difficult to expand, thereby avoiding the increase of gaps among the anode foil, the cathode foil and the electrolytic paper, and enabling the capacitor to still maintain higher current-carrying capacity when the capacitor is used for a long time.

The invention provides an ion irradiation method for improving the performance of a copper-based superconducting strip, and belongs to the technical field of ion irradiation. The ion irradiation method comprises the following steps: carrying out ion irradiation on the copper-based superconducting tape by adopting an ion beam under a vacuum condition; the ion beam comprises a light ion beam or a heavy ion beam. By accurately controlling the energy, dosage and current intensity of the ion beam, effective modification of the copper-based superconducting strip is realized, the current-carrying performance of the 2G-HTS strip under high temperature and high field is remarkably improved, and the critical current density Jc is improved by 2.1-5 times. In addition, modification can be carried out according to the specific requirements of the copper-based superconducting strip, and then the consistency and stability of the modification effect are improved.

The application provides a crosslinked polyethylene insulated cable and a preparation process thereof, and belongs to the technical field of cables, and comprises the following steps: step S1, preparing UiO-66-F4 masterbatch; step S2, preparing hexagonal boron nitride masterbatch and nano-alumina masterbatch; step S3, preparing insulation granules; step S4, performing three-layer co-extrusion on a copper core conductor to form a conductor shielding layer / insulation layer / insulation shielding layer, and then performing CV crosslinking, cooling, degassing, and then coating a metal braided shielding layer and an outer sheath to obtain the crosslinked polyethylene insulated cable. The application can improve the DC breakdown strength and long-term insulation stability of the crosslinked polyethylene insulated cable.

The utility model discloses an efficient water-passing busbar for a submerged arc furnace, which relates to the technical field of submerged arc furnaces and comprises a busbar main body, clamping pieces fixedly mounted on two sides of the busbar main body and used for clamping a conductive copper pipe, and a cooling circulation structure arranged on the busbar main body, the top end of the busbar body is fixedly installed on a lower holding cylinder of the submerged arc furnace through an insulation connecting support, the busbar body comprises a transverse part and a vertical part connected with the transverse part and is of a T-shaped structure on the whole, and the cooling circulation structure comprises a copper pipe connector used for being connected with a water-cooled cable and a circulation water channel arranged on the inner side of the busbar body. The copper pipe joint is fixedly mounted on the surface of the transverse part and communicates with the circulating water channel; the utility model has the advantages of better cooling effect, stronger current-carrying capability and higher mechanical strength.

This invention relates to a multi-contact high-current connection terminal and connector. The multi-contact high-current connection terminal of this invention includes: an inner terminal and an outer shell, the outer shell being fitted over the inner terminal; the inner terminal has a first base and a first spring contact connected to the first base, the first spring contact having a first contact that connects to a mating component; the outer shell includes a second base, a second spring contact, and a third spring contact; one end of the second spring contact is connected to the second base, and the other end is bent inwards towards the second base and has a second contact that connects to the mating component; the third spring contact is connected to the side wall of the second base and bent inwards towards the second base, abutting against the first spring contact. The multi-contact high-current connection terminal of this invention, by setting a double-layer multi-contact structure, can carry a larger current while the third spring contact elastically supports the first spring contact, forming a double-spring contact arm, thereby increasing the positive force of the connection terminal and improving its current-carrying capacity.

This invention discloses a heated shoe and a method for processing the shoe, comprising: a shoe upper having a shoe collar with a first opening on one side; a conveying device fixedly connected to the shoe collar at the first opening, and having a plurality of probes located at the first opening; a heated lining comprising a lining fabric, a heating body, and a temperature sensor, the lining fabric being attached to the shoe upper and in contact with the foot, and the heating body being attached to the lining fabric; one end of the temperature sensor being electrically connected to the heating body, and the other end being electrically connected to the conveying device; and a power supply device detachably connected to the conveying device, comprising a power supply and a control module, the control module receiving signals from the temperature sensor to control the power supply to be turned on or off; the power supply device having a second opening corresponding to the first opening, and the probes abutting against the power supply device through the second opening. This invention provides a heated shoe and a method for processing the shoe, which has a simple structure, is aesthetically pleasing, easy and convenient to use, safe and reliable, achieves dynamic waterproofing, and enhances the user experience.

The invention discloses a super capacitor cell and a capacitor. The cell comprises inner-layer electrolytic paper, a positive electrode aluminum foil, middle-layer electrolytic paper and a negative electrode aluminum foil. Wherein the positive electrode aluminum foil comprises a positive electrode base layer aluminum foil and a positive electrode pure aluminum layer; the negative electrode aluminum foil comprises a negative electrode base layer aluminum foil and a negative electrode pure aluminum layer; the extension directions of the positive electrode pure aluminum layer and the negative electrode pure aluminum layer are opposite; the thickness of the positive electrode base layer aluminum foil is greater than that of the positive electrode pure aluminum layer, and / or the thickness of the negative electrode base layer aluminum foil is greater than that of the negative electrode pure aluminum layer. According to the super capacitor cell and the capacitor, the current carrying capacity of the current and the charging and discharging functions of the capacitor can be greatly improved, and the safety performance of the capacitor in the heavy load scene of frequent rapid acceleration and energy recovery is further improved.

The embodiment of the utility model provides an energy storage high-voltage box integrated board, which comprises a circuit board substrate, and a power supply input end, a power supply output end, a main positive relay, a total negative relay, a pre-charging relay, a pre-charging resistor, a sampling resistor, a fuse and a signal line terminal which are welded on the circuit board substrate, and is characterized in that the main positive relay is electrically connected between the power supply positive input end and the power supply positive output end; the main negative relay is electrically connected between the power supply negative input end and the power supply negative output end; the pre-charging relay is connected in series with the pre-charging resistor and then is connected in parallel with the main positive relay; the sampling resistor is arranged in the circuit loop; the signal line terminal is used for being connected with an external line to transmit a sampling signal and a control signal; the fuse is connected in series in the circuit loop; the circuit board substrate adopts a double-layer board, and a plurality of strip-shaped windows which are arranged at equal intervals are arranged at element welding positions in the top layer and the bottom layer of the circuit board substrate. The installation is simplified, the cost is reduced, and the installation efficiency is improved.

The invention provides a multi-software-based PCB circuit board electrothermal coupling simulation method and system, and the method comprises the steps: S1, building a magnetic device circuit equivalent model according to the structure and working principle of a magnetic device, and building a magnetic device circuit finite element model through Maxwell; s2, constructing a switching circuit simulation model by using Simplorer according to the main dynamic parameters of the switching device influenced by the temperature; s3, constructing a three-dimensional model of the flow guide strip by using Q3D according to the actual size and shape of the flow guide strip; s4, establishing a thermal simulation model of the radiator according to a heat conduction and convective heat exchange principle, and optimizing a heat dissipation structure to obtain an optimized thermal simulation model of the radiator; and S5, constructing an electrothermal coupling model by using ICEPAK according to the plurality of constructed thermal simulation models, and performing bidirectional electrothermal coupling with multiple software to obtain a final simulation result. The method has the advantages of high reliability, low cost and the like.

The invention relates to the technical field of relays, and particularly discloses a high-load movable contact spring and a push rod type relay comprising the movable contact spring. Wherein the movable contact spring is provided with a contact spring body, and the contact spring body is of an overlapped structure of at least two contact springs in the thickness direction; in the overlapping structure, the springback side reed and the pushing side reed which are adjacently arranged are provided with an elastic gap which is located between the pin connecting position and the pushing connecting position and is of a triangular structure. The pushing side reed forms a bottom edge of the elastic gap; the springback side reeds form two waist edges of the elastic gap; the length of the bottom edge is larger than that of the two waist edges. According to the invention, the formed push rod type relay can realize high current-carrying performance by basically keeping the original electromagnetic attraction design, the formed push rod type relay can form dimension reduction competition in the market, and the market prospect is good.

The invention provides a 2.5 D interposer packaging structure and a packaging method, and relates to the technical field of semiconductor packaging. The 2.5 D interposer packaging structure comprises an interposer, a conductive column, an insulating layer, a first dielectric layer, a second dielectric layer, a first metal layer and a solder ball. The interposer is provided with a first surface and a second surface which are oppositely arranged; the conductive column is arranged in the interposer, and one end face of the conductive column protrudes out of the first surface; the insulating layer is arranged on the first surface and covers the side wall of the conductive column, so that a first groove is formed in the periphery of the conductive column; the first dielectric layer is arranged in the first groove; the second dielectric layer is arranged on the first dielectric layer and is provided with a first opening for exposing the conductive column; the section of the first opening is larger than that of the conductive column; the first metal layer is arranged in the first opening; the first metal layer is electrically connected with the conductive column; the solder ball is electrically connected with the first metal layer. Fracture or subfissure of the conductive columns in the manufacturing process can be prevented, and the conductivity and the packaging reliability are improved.

The invention relates to a capacitive high-voltage insulated bus and a manufacturing method thereof, and belongs to the technical field of high-voltage insulated buses, and the manufacturing method comprises the following steps: S1, conductor pretreatment: carrying out oil removal, oxide layer removal and sand blasting roughening treatment on the surface of a central conductor; s2, multi-layer material co-extrusion: pulling the preheated central conductor to pass through a multi-layer co-extrusion head at a constant speed; s3, synchronous cross-linking and forming: immediately guiding the multi-layer blank into a closed synchronous cross-linking and forming pipeline; and S4, post-processing and assembling: performing appearance detection, partial discharge test and withstand voltage test on the cross-linked bus. According to the capacitive high-voltage insulated bus and the manufacturing method thereof, an integrated composite capacitor structure composed of the inner semiconductor layer, the stepped capacitor layer and the outer semiconductor layer is designed, so that the potential between the high-voltage conductor and the grounding shell is linearly and uniformly distributed, and the phenomenon of electric field concentration is thoroughly eliminated; and the long-term insulation life and the operation voltage grade are obviously improved.

The invention relates to a step special-shaped battery cell and a preparation method thereof and a step special-shaped lithium ion battery, the step special-shaped battery cell comprises a first battery cell unit and a second battery cell unit which are arranged in a stacked mode, and in the length direction and the width direction, the size of the first battery cell unit is larger than that of the second battery cell unit; the first battery cell unit and the second battery cell unit respectively comprise a first positive pole piece, a second positive pole piece, a first negative pole piece, a second negative pole piece and a diaphragm; the first positive pole piece and the second positive pole piece respectively and independently comprise a first positive active material, and the first negative pole piece and the second negative pole piece respectively and independently comprise a first negative active material; the second positive pole piece further comprises a second positive active material, and the second negative pole piece further comprises a second negative active material. According to the step special-shaped battery cell provided by the invention, by adding the high-rate second positive electrode active material and the high-rate second negative electrode active material, the current bearing capacity of the small second battery cell unit is effectively improved, and the current distribution between the small second battery cell unit and the high-rate second negative electrode active material is improved, so that the capacity retention ratio and the safety performance of the step special-shaped battery are greatly improved.

This invention discloses a low-height snap-fit ​​electromagnetic relay, comprising a base, a housing, a magnetic circuit portion, and a moving spring armature portion. The magnetic circuit portion is mounted on top of the base portion, with the axis of the coil assembly in the magnetic circuit portion arranged laterally. The armature in the moving spring armature portion engages with the magnetic circuit portion at one end of the coil assembly. The housing is cover-shaped with its opening on the side. The base, which houses the magnetic circuit portion and the moving spring armature portion, is tilted and housed within the housing, with the housing mounted vertically. This structure ensures that the height of the relay after installation is reduced to only the wall thickness of the coil assembly and the housing in the height direction corresponding to the coil assembly.

The utility model discloses a low -cost piece formula contact piece jack structure relates to connector technical field, including conductive main part and steel case, and the conductive main part includes the elastic region and the end region of increasing thickness in proper order, and is provided with the transition area of thickness conversion between the elastic region and the end region, is equipped with the elastic contact cantilever on the elastic region, and the steel case sets up on the transition area and cooperates with the elastic contact cantilever on the elastic region. The material of elastic region is thin, and a plurality of contacts are arranged on the elastic contact cantilever, and the conductive function can be realized after contacting with the pin; the transition area is the thick, thin material conversion area; the end region is the connecting area of pencil and similar pencil function components, and generally uses the welding, crimping etc. Mode to realize the connecting function. The steel case is wrapped in the outside of conductive main part, can promote the contact stability and the ageing resistance of elastic region contact, realizes the anti -back function simultaneously, can guarantee the contact stability of contact region, and can solve the problem of few and high cost of existing contact.

This utility model discloses a current-carrying terminal, wherein the current-carrying terminal (100) includes a first U-shaped groove (10), a first connecting end (20), and a second connecting end (30). A first fixing hole (11) is provided between the two side walls of the first U-shaped groove (10). The first connecting end (20) and the second connecting end (30) are used to connect cables for current transmission. The first connecting end (20) and the second connecting end (30) are arranged side by side. The first connecting end (20) and the second connecting end (30) are connected to the first fixing hole (11) by bolts (60), and the first connecting end (20) and the second connecting end (30) are fixed to the first fixing hole (11) by nuts (61). After being energized, the first connecting end (20) and the second connecting end (30) are conductive. This utility model reduces the copper busbars used in the past. Through structural improvements, the terminal volume is reduced, the fastening process and production and development costs are reduced, and the current-carrying capacity, product competitiveness and production efficiency are improved.

The application discloses a kind of weather-resistant ultraviolet-resistant overhead insulated cable and preparation method thereof.Cable is sequentially arranged with rare earth aluminum alloy conductor with alumina ceramic membrane, conductor shielding layer, gradient functional composite insulation layer and biomimetic super-hydrophobic outer sheath from inside to outside, and passive surface acoustic wave sensing component is uniformly laid out.The insulation layer is three-layer co-extrusion molding: heat-conducting insulation inner layer filler is radially oriented, self-repairing enhanced middle layer contains dynamic covalent bond and photo-thermal microcapsule, and weather-resistant ultraviolet-resistant outer layer is compounded with core-shell ultraviolet shielding agent.The outer sheath is modified with fluorosilane, and the water contact angle is greater than or equal to 150°.The sensing component wirelessly monitors temperature, ultraviolet cumulative dose and deformation.The cable has a service life of more than thirty years, has natural light self-repairing and passive online monitoring functions, has strong environmental adaptability, and has low operation and maintenance cost.

The invention relates to a load switch circuit with surge current suppression, and belongs to the technical field of power supplies. The load switch circuit comprises a main switch circuit, a switch current limiting circuit, a driving circuit 1, a driving circuit 2 and a feedback circuit. According to the invention, the output current at the power-on moment is limited through the switch current-limiting circuit, and the main switch circuit is turned on and the switch current-limiting circuit is turned off through feedback control, so that the low conduction voltage drop is maintained after the circuit works normally. The circuit has the advantages of compact size, low energy consumption, long service life, strong current-carrying capability, high safety and reliability and the like, and can effectively improve the overall operation stability and environmental adaptability of computer products.