33results about How to "Reduce potential difference" patented technology

The invention discloses a ZnFeP-particle gradient abrasion-resistant chemical composite coating and a preparation method of the ZnFeP-particle gradient abrasion-resistant chemical composite coating. The ZnFeP-particle gradient abrasion-resistant chemical composite coating is divided into a passivation layer, a low-iron ZnFeP-particle chemical composite coating and a high-iron ZnFeP-particle chemical composite coating from outside to inside, and a gradient coating with the corrosion potential from low to high is formed; the content of iron in the low-iron ZnFeP-particle chemical composite coating ranges from 0.03 wt% to 1.0 wt%, the thickness of the low-iron ZnFeP-particle chemical composite coating ranges from 8 micrometers to 18 micrometers, and the hardness of the low-iron ZnFeP-particle chemical composite coating ranges from 150 HV to 300 HV. The content of iron in the high-iron ZnFeP-particle chemical composite coating ranges from 5 wt% to 30 wt%, the thickness ranges from 8 micrometers to 18 micrometers, and the hardness ranges from 500 HV to 650 HV. By means of the ZnFeP-particle gradient abrasion-resistant chemical composite coating, a metal component can be resistant to abrasion and corrosion, and therefore the service capacity of the metal component such as electric power fittings in the abrasion working condition is obviously improved.

The invention provides a preparation method of a high interface strain polymer electrolyte for a lithium metal battery, and belongs to the technical field of lithium metal batteries, and the preparation method specifically comprises the following steps: firstly preparing a precursor solution A containing a lithium salt and an organic solvent, then preparing a precursor solution B obtained by mixing a polymer monomer, an initiator, a cross-linking agent and the lithium salt, mixing the precursor solution A and the precursor solution B, and carrying out vacuum drying to obtain the high interface strain polymer electrolyte for the lithium metal battery. And assembling a lithium metal battery by using the polymer as an electrolyte, and drying to obtain the high interface strain polymer electrolyte which is formed in situ in the positive and negative electrode interfaces of the lithium metal battery. By designing the proportion of fluorine element and oxygen element in a polymer electrolyte chain segment, the coordination strength of Li-O in a polymer electrolyte body phase is reduced, and the interface volume deformation during polymer lithium ion removal is improved, so that the potential difference of an electrolyte / lithium metal interface is reduced, the interface lithium deposition is homogenized, and the lithium dendrite growth is inhibited; and the cycling stability of the lithium metal battery is finally improved.

The present invention relates to the technical field of powder metallurgy, and more particularly to a method for preparing a graphene composite copper strip by powder metallurgy combined with a medium-temperature continuous extrusion process using copper waste. According to the application scenario of the graphene composite copper strip, copper waste containing different components is selected; the copper waste is crushed into copper block fragments; 0.1-8% of graphene by mass is added to the copper block fragments, and a first-size mixed powder is formed by grinding; the first-size mixed powder is semi-melted and stirred to form a graphene-copper mixed substrate, which is continuously extruded; the graphene composite copper strip blank is processed with reference to a conventional copper cold rolling process to obtain a graphene composite copper strip. The present invention combines a medium-temperature continuous extrusion process with a powder metallurgy process to realize the recycling of copper waste in a non-smelting manner and the production of a matrix of a high-performance graphene composite copper strip. The present invention also discloses the application of the graphene composite copper strip.

The invention provides a metal wire-containing positive electrode slurry, a metal wire-containing negative electrode slurry, a current collector-free positive electrode plate, a current collector-free positive electrode plate and a battery. The toughness of the active material layer is improved by adding trace metal wires into the positive / negative electrode slurry, and the problem of insufficient electronic conductivity caused by the absence of a current collector is improved; the positive electrode / negative electrode slurry containing the metal wire is coated on the diaphragm, so that the manufacturability of the active material layer is further improved, and the current collector-free battery can be industrially produced and manufactured; the content of the added metal wires is 0.02-2% of the total solid content, and the energy density of the whole battery is higher than that of a traditional battery; due to the addition of the metal wire, the resistivity of the diaphragm of the positive pole piece is reduced from 5-100 omega.cm to 0.01-3 omega.cm, the potential difference of the pole piece in the thickness direction is smaller in the charging and discharging process of the battery, the thickness of an active material layer can be increased under the same performance, and the energy density of the battery can be further improved.

The invention relates to the technical field of aluminum alloys, in particular to a high-stress-corrosion-resistant Al-Cu-Mg alloy and a preparation method and application of a thick plate of the high-stress-corrosion-resistant Al-Cu-Mg alloy. The alloy comprises the following components in percentage by weight: 4.0-4.6% of Cu, 1.4-1.6% of Mg, 0.3-0.9% of Mn, less than or equal to 0.06% of Cr, less than or equal to 0.03% of Ti, less than or equal to 0.05% of Fe, less than or equal to 0.03% of Si, less than or equal to 0.15% of total impurity elements and the balance of Al, wherein the ratio of Cu to Mg is less than or equal to 3. According to the high-stress-corrosion-resistant Al-Cu-Mg alloy and the preparation method of the Al-Cu-Mg alloy thick plate, the content and the proportion of main alloy elements Cu and Mg are optimized, the content of a microalloy element Mn is controlled to be reasonably matched with the rolling temperature, the microstructure characteristics and the precipitated phase morphology and distribution are regulated and controlled, and the high-stress-corrosion-resistant Al-Cu-Mg alloy and the preparation method of the Al-Cu-Mg alloy thick plate are specially provided for the Al-Cu-Mg alloy thick plate for aerospace. The Al-Cu-Mg alloy thick plate has excellent stress corrosion resistance under the high stress condition, the production cost is low, the technological process is simple, and the excellent stress corrosion resistance can be obtained under the existing preparation condition.

A novel graphite boat comprises a graphite block and a plurality of boat pieces arranged in parallel, the graphite block and the boat pieces form an included angle of 90 degrees, the graphite block is connected with the boat pieces through graphite screws, and the novel graphite boat is characterized in that a fixed interval is arranged between every two adjacent boat pieces, and the width of the fixed interval is gradually increased from the center to the two sides. According to the utility model, through the non-equal-interval design, the intervals of the outer-layer boat pieces of the graphite boat are increased, and the potential difference of the adjacent outer-layer boat pieces during discharging is reduced in the process, so that the film forming color difference caused by temperature difference is optimized, and the effect that the appearance color of the formed film is consistent is achieved; rework and damage can be effectively reduced, the one-time yield is improved, the cost is further reduced, and the production efficiency is improved.

The present invention belongs to the field of soft-pack batteries, and in particular, relates to a battery cell, a soft-pack battery, an electrical device, and a method for preparing a soft-pack battery. In order to solve the problem in the prior art that a Tab connector needs to be welded on the tab, which results in a low volume energy density of the soft-pack battery, a large impedance and severe heat generation at the welding point, poor power performance, poor reliability, and potential safety hazards, the battery cell of the present invention includes positive and negative pole tabs. When the number of the same-pole tabs is one, the corresponding tabs serve as corresponding conductive structures. When the number of the same-pole tabs is at least two, all the same-pole tabs are sealed and connected to form corresponding conductive structures. The present invention also proposes a method for preparing a soft-pack battery, an electrical device, and a soft-pack battery comprising the above-mentioned battery cell. Using the tabs as conductive structures can omit the Tab connector and the welding area, improve the volume energy density of the soft-pack battery and the battery cell, and eliminate the potential safety hazards caused by metal shavings generated by welding entering the battery cell.

This application relates to a semiconductor device and a method for fabricating the same. The semiconductor device includes: a first substrate, comprising a main body portion and at least one protrusion disposed on the main body portion; at least two second substrates disposed on the main body portion, with a protrusion located between any two adjacent second substrates; at least two isolation regions, corresponding one-to-one within the at least two second substrates; each isolation region enclosing a device region within its corresponding second substrate; at least two first well regions, corresponding one-to-one with the at least two second substrates, each first well region being located within its corresponding device region on the second substrate; and a first conductive structure electrically connected to the first substrate; wherein the first substrate, second substrates, and first well regions are of a first conductivity type, and the doping concentration of the first substrate is greater than the doping concentration of the first well regions; the isolation regions are of a second conductivity type. This application can improve the latch-up effect of semiconductor devices.

The invention discloses a preparation method and application of a rare earth magnesium alloy surface micro-arc oxidation film layer manufactured through electric arc additive manufacturing, and relates to the technical field of additive manufacturing light metal surface treatment. The preparation method comprises the following steps: manufacturing a rare earth magnesium alloy through electric arc additive manufacturing; carrying out homogenizing heat treatment on the rare earth magnesium alloy subjected to electric arc additive manufacturing; performing earlier-stage treatment; preparing an inner-layer alkaline electrolyte and an outer-layer alkaline electrolyte; and step-type voltage micro-arc oxidation treatment: taking stainless steel as a cathode, taking the magnesium alloy as an anode, sequentially putting the stainless steel and the magnesium alloy into the inner-layer alkaline electrolyte and the outer-layer alkaline electrolyte for micro-arc oxidation, cleaning and drying to obtain a micro-arc oxidation film layer on the surface of the magnesium alloy. According to the preparation method, the problems that a traditional micro-arc oxidation coating is loose, porous, prone to corrosion and short in service life are solved, the corrosion resistance of the magnesium alloy is effectively improved, the magnesium alloy is prevented from volatilizing under the high-temperature condition, the working requirement of a satellite support in the space environment is met, and the application range of the magnesium alloy is widened.

The invention discloses a miniaturized logging equipment system which comprises a power amplification module, a driving module, a cylindrical electrode module, a first digital-to-analog conversion module, a second digital-to-analog conversion module, a first processor, a second processor and a communication module. The first processor is sequentially connected with the first digital-to-analog conversion module, the driving module and the cylindrical electrode module; the cylindrical electrode module is connected with the power amplification module; the cylindrical electrode module is connected with the second digital-to-analog conversion module, and the second digital-to-analog conversion module is sequentially connected with the second processor and the communication module; the miniaturized logging equipment system has the advantages of high measurement precision, high stability, reliable measurement data, portability, easiness in operation and the like, and compared with conventional field measurement equipment, the size is reduced by one tenth, and the adaptability is high; the method can be applied to scenes of scientific research, actual teaching and the like, and has wide significance in characterization and evaluation of complex cracks and research of oil and gas characteristics in domestic carbonate rocks.

The invention provides a composite positive electrode material, a preparation method thereof and an all-solid-state lithium battery containing the composite positive electrode material. The composite positive electrode material comprises positive electrode active material particles, sulfide solid electrolyte particles and a lithium fluoride layer, the lithium fluoride layer is located between the positive electrode active material particles and the sulfide solid electrolyte particles. The composite positive electrode material is prepared by carrying out a calcination reaction on a fluorine-containing compound and a positive electrode active material and / or sulfide solid electrolyte. The composite positive electrode material provided by the invention has the lithium fluoride layer, so that the interface contact reaction of the positive electrode active material and the sulfide solid electrolyte can be inhibited while the interface area of the positive electrode active material and the sulfide solid electrolyte is increased, and the residual alkaline lithium compound in the positive electrode active material can be consumed when the lithium fluoride layer is formed; therefore, the all-solid-state lithium battery adopting the composite positive electrode material has good cycling stability and rate capability.

The invention discloses a copper-aluminum composite material and a composite device, and relates to the technical field of electric power fitting materials, the copper-aluminum composite material is formed by welding a copper alloy and aluminum, and the copper alloy comprises the following components in parts by weight: 90-95 parts of copper; 0.1 to 1 part of silver; 0.1 to 5 parts of magnesium; 0.1 to 5 parts of iron; 0.1 to 5 parts of zinc; 0.01 to 1 part of chromium; wherein the ratio of copper to silver is at least 150: 1; the ratio of copper to magnesium is at least 80: 1; the ratio of copper to zinc is at least 50: 1; the preparation method of the copper alloy comprises the following steps: preparing alloy raw materials according to the proportion of the raw materials, carrying out vacuum melting on the raw materials by adopting a water-cooled copper crucible magnetic suspension melting furnace, and carrying out inert gas protection; and after the raw materials are molten and completely alloyed, the temperature of a melt is adjusted to be about 1700 DEG C, then inert gas is adopted for atomization to prepare powder, the powder is molten again in a vacuum melting furnace, the temperature is 2000 DEG C or above, cooling is conducted, and the copper alloy material is prepared.

The invention relates to the technical field of permanent magnet preparation, and particularly discloses a high-temperature-resistant neodymium-iron-boron magnet and a preparation method thereof. The high-temperature-resistant neodymium-iron-boron magnet comprises the following elements in percentage by mass: 17.4%-19.5% of Nd, 0.66%-0.72% of B, 38.37%-41.19% of Fe, 0.36%-4.8% of Dy, 0.18%-0.3% of Nb, 0.18%-0.3% of Al, 0.03%-0.09% of Cu, 29.1%-34.8% of an alloy rapid hardening sheet and the balance of unremovable impurities, wherein the alloy rapid hardening sheet contains Pr, Tb, Bi and Sn; the preparation method comprises the following steps: grinding the surface of an alloy rapid hardening sheet to be bright, mixing the alloy rapid hardening sheet with a pretreated magnet block, adding zirconium oxide balls, putting into a reaction kettle of a rotary diffusion furnace, vacuumizing the reaction kettle, introducing argon, rotating at the rotating speed of 4-6r / min, keeping the temperature at 700-704 DEG C for 3-7h, and carrying out rotary diffusion, so as to obtain the zirconium oxide-based composite material. And then carrying out heat preservation at 850-950 DEG C for 2-4 hours for high-temperature diffusion and heat preservation at 450-550 DEG C for 2-4 hours for tempering heat treatment by using a vacuum tube furnace in a vacuum environment. The high-temperature-resistant neodymium-iron-boron magnet has the advantage that the defect that heat resistance of a conventional neodymium-iron-boron magnet is still insufficient is overcome.

The application provides a method for improving the bonding force of a neodymium iron boron deposition layer based on a reinforced ion exchange deposition technology, and belongs to the technical field of rare earth permanent magnet material preparation. The method comprises the following steps: neodymium iron boron magnet cleaning pretreatment, removing contaminants and metal oxides on the surface of the magnet; activating the neodymium iron boron magnet by acid corrosion to obtain a pretreated magnet with a rough surface; soaking the pretreated magnet in an electrolyte and connecting the magnet to a negative electrode; and performing ion exchange deposition on the surface of the magnet to be deposited by applying a pulse variable frequency electric field on the surface of the magnet to prepare a deposition layer; wherein, the surface of the magnet is first modified by micro-electrolysis, and then the ion exchange deposition is performed by applying a variable frequency electric field. In the initial stage, the surface of the magnet is continuously subjected to micro-electrolytic corrosion by a stable current to regulate the interface state and then realize surface modification, which is beneficial to the effective bonding of the deposition layer formed by the subsequent ion exchange deposition.

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 a corrosion-resistant aluminum alloy plate for a new energy automobile battery and a preparation process of the corrosion-resistant aluminum alloy plate, and belongs to the technical field of alloys, the aluminum alloy plate comprises the following components in percentage by mass: 0.50-1.00 wt% of Si, 1.80-2.20 wt% of Mg, 1.10-1.20 wt% of Mn, 0.5-1.0 wt% of Re, 0.15-0.20 wt% of Sc, 0.60-1.20 wt% of La, less than or equal to 0.05 wt% of inevitable impurities and the balance of Al. The corrosion resistance of the aluminum alloy plate is improved through the synergistic effect of manganese, rhenium, magnesium and lanthanum, meanwhile, the lubricant is self-made and is used for preparing the aluminum alloy plate, abrasion of a tool to alloy in the pressing process can be reduced, the quality of the aluminum alloy plate finished product is improved, and the surface attractiveness of the aluminum alloy plate finished product is also improved.

This invention relates to the field of hot extrusion manufacturing technology, specifically to a high-strength weldable 6xxx series aluminum alloy profile, its manufacturing method, and its application. The aluminum alloy profile is composed of the following weight percentages: Si: 0.80%~1.2%, Fe≤0.20%, Cu: 0.40%~0.80%, Mn: 0.30%~0.70%, Mg: 0.70%~1.1%, Cr≤0.25%, Zn≤0.10%, Ti≤0.10%, Zr: 0.05%-0.20%, Pb<0.01%, with the balance being Al and unavoidable impurities. The profile meets the following performance requirements: tensile properties, R... m ≥420MPa, R p0.2 ≥330MPa, A 50mm ≥8.0%; Fatigue performance: at r=0.1, N=1×10 7 Under the same conditions, the fatigue strength σ of the smooth sample is ≥145MPa, realizing the lightweight manufacturing of high-speed trains.

The application discloses a kind of heat-resistant low-loss steel-cored aluminium stranded conductor and preparation method thereof, belong to power transmission equipment technical field.The preparation method of the heat-resistant low-loss steel-cored aluminium stranded conductor includes steel core pretreatment and continuous electroplating, steel core stranding, heat-resistant aluminium alloy single wire preparation, aluminium stranded conductor stranding, stranding cleaning and plasma activation, organosilicon light-cured protective layer impregnation, cooling detection and winding.The application aims at the technical problem that existing steel-cored aluminium stranded conductor is difficult to consider heat resistance, low loss and long-term corrosion resistance, uses low-magnetic steel core and zirconium-containing rare earth heat-resistant aluminium alloy to reduce loss, inhibits galvanic corrosion between steel core and aluminium wire by Zn-Al gradient composite coating, and uses vinyl silane pre-wetting combined with ultraviolet light curing and low-temperature thermal curing three-stage process to construct high-adhesion, high-hardness organosilicon protective layer, realizes the comprehensive performance improvement of wire long-term temperature resistance ≥130 DEG C, conductivity ≥60% IACS, coating adhesion 1 level.

The application provides a display panel and an electronic device. The electronic device comprises the display panel. The display panel comprises a substrate and a composite metal film layer. The composite metal film layer comprises a blocking layer and a main body layer which are stacked. By reducing the potential difference between the main body layer and the blocking layer in the composite metal film layer, the gap between the main body layer and the blocking layer is reduced, the hollowing of the blocking layer in the composite metal film layer is improved, the problems of line defects or black screen of the display panel are avoided, and the yield of the display panel is improved.

The invention provides a cathode plate for efficiently preparing electrolytic copper, and belongs to the technical field of electrolytic copper equipment. A stainless steel plate A (the texture direction is in the rolling direction), a copper foil and a stainless steel plate B (the texture direction is perpendicular to the rolling direction) are subjected to high-pressure vacuum compounding and edge ion beam welding, and then the stainless steel plate A, the copper foil and the stainless steel plate B are welded with a conducting rod to form an integral cathode plate structure. The method can not only effectively prevent electrode plate conductivity reduction and uneven charge distribution caused by passivation of the inner surface of the electrode plate, greatly improve the electrolytic efficiency and the current utilization rate, but also effectively prevent deformation or short circuit of the cathode plate, and realize green energy-saving production.

The invention discloses an ultrahigh-strength and high-toughness 7-series aluminum alloy for an automobile anti-collision beam and a preparation method of the ultrahigh-strength and high-toughness 7-series aluminum alloy, and belongs to the field of aluminum alloy materials. The components of the 7-series aluminum alloy are optimized, the contents of main elements Zn, Mg and Cu are controlled within the optimal range, Zn / Mg is accurately limited to be larger than or equal to 3 and smaller than or equal to 4.5, Zn-3Mg-Cu is accurately limited to be larger than or equal to 0.5 and smaller than or equal to 2.1, it can be effectively guaranteed that a strengthening phase is separated out in a better strengthening and toughening form, size and density, the grain refining effect of a refiner is matched, the obtained 7-series aluminum alloy has high strength and high toughness, the tensile strength can reach 540 MPa or above, and the tensile strength can reach 540 MPa or above. The yield strength can reach 520 MPa or above, meanwhile, the ductility is kept at 14% or above, and the practical requirements for high strength and high toughness of the automobile anti-collision beam in collision are met. In addition, through three-stage homogenization treatment, a product with excellent strength, toughness and corrosion resistance is promoted to be obtained, so that the use requirements of the automobile anti-collision beam are met.

The invention relates to the technical field of transformer production, and discloses a transformer winding method which comprises the following steps: S1, placing a framework on a CNC winding machine; s2, winding a first copper wire around the framework along one direction at the PI N end of the framework for the first time; s3, performing secondary winding on the surface of the coil subjected to primary winding by using a second copper wire, wherein the head wire and the tail wire of the second copper wire are not crossed; s4, performing third winding on the surface of the coil after the second winding by using a third copper wire; s5, utilizing a fourth copper wire to perform fourth winding on the surface of the coil after the third winding is completed; s6, carrying out fifth winding on the surface of the coil after the fourth winding is completed by utilizing a fifth copper wire; and S7, tidily assembling the wound magnetic cores, carrying out impregnation treatment in a vacuum environment, drying the impregnated product through an oven, and carrying out quality detection on the product.

The utility model discloses a U-shaped multi-stage grounding ESD (Electro-Static Discharge) anti-static wrist strap connector, which comprises an ESD equipment host (1), the ESD equipment host (1) is provided with at least one plug-in ESD wrist strap connecting wire (7), and the ESD wrist strap connecting wire (7) is provided with a U-shaped connector (2); the ESD equipment host (1) is provided with a U-shaped notch (3), and the U-shaped connector is arranged in the U-shaped notch (3). The connector provided by the utility model adopts an embedded design, and the U-shaped connector is embedded into the U-shaped notch of the ESD equipment host, so that not only is the aesthetic property of the equipment improved, but also the grounding reliability and the use safety are remarkably improved through a multi-stage grounding design and an anti-falling structure.

This invention relates to the field of relay protection technology, specifically an intelligent disconnect switch, comprising a base, a connector, a telescopic rod, and at least one disconnect switch. The disconnect switch is mounted on the top surface of the base, the connector is fixedly connected to the blades of all disconnect switches, one end of the telescopic rod is hinged to the top of the base, and the other end of the telescopic rod is hinged to the connector. A shielding box and a telescopic rod actuator are provided inside the base, and an electrical control board is mounted in the shielding box. The first and second detection terminals of the electrical control board are respectively connected to a voltage transformer and a current transformer on the power grid side via wires. The control terminal of the electrical control board is electrically connected to the telescopic rod actuator via wires, and the telescopic rod actuator and the telescopic rod are connected in a transmission manner. When the electrical control board detects an overvoltage or overcurrent signal, it drives the telescopic rod to retract through the telescopic rod actuator, causing the disconnect switch to open. The base and the shielding box are equipotentially connected, and the base is grounded. This invention solves the problems of the size of the intelligent disconnect switch and insufficient EMI immunity.

The utility model discloses a shielding structure, an electric connector and a connector assembly, which belong to the field of electric connectors, the shielding structure is used for shielding the electric connector and comprises a metal shell, a first grounding piece and a second grounding piece, and the first grounding piece and the second grounding piece are respectively arranged on two sides of a cable of the electric connector. The first grounding piece and the second grounding piece are electrically connected with a shielding layer of a cable of the electric connector, the first grounding piece is electrically connected with a grounding terminal of the electric connector, the first grounding piece is provided with an extending part, and the extending part is electrically connected with the metal shell. According to the shielding structure, the electric connector and the connector assembly provided by the utility model, the extension part is additionally arranged at the first grounding piece, so that stable connection between the first grounding piece and the metal shell can be effectively ensured. Furthermore, stable conduction among the grounding terminal, the coaxial line shielding layer connected with the signal terminal and the metal shell is achieved. The electromagnetic interference shielding effectiveness of the metal shell can be fully exerted, and the problem that wires are scalded possibly in a traditional mode is avoided.

The invention discloses a lightning protection system for trackside signal equipment of a non-electrified line. The lightning protection system is characterized in that signal cables connected with the trackside signal equipment are shielding cables; the through ground wire is arranged on a non-electrified circuit where the trackside signal equipment is located and is connected with an equipment ground net, and the shielding layer of each shielding cable is electrically connected with the through ground wire; the insulated lightning receiving needle is arranged at the top end of the high-column annunciator concrete pole and is positioned above the high-column annunciator; the sheath-equipped flame-retardant downlead of the insulated lightning arresting needle is sequentially connected with the lightning information recorder and the vertical grounding body, and is electrically connected with the through ground wire through the vertical grounding body. The transient potential difference suppression devices are arranged between the two tracks at intervals, and each transient potential difference suppression device is electrically connected with the two tracks; the shunting device is connected to a shielding cable of the sending-end trackside signal equipment; and the equipment box of each trackside signal equipment is a shielding equipment box. The system can effectively prevent lightning from damaging trackside signal equipment of a non-electrified railway line, and has a good protection effect.

This utility model belongs to the field of EMC grounding structure, specifically disclosing an EMC grounding terminal and its components. The EMC grounding terminal includes a grounding conductor and a connecting block for interference fit on the inner wall of a conductive housing. The grounding conductor has pins for conductive connection to a circuit board, and the connecting block has a protrusion. The grounding conductor passes through the protrusion and is connected to the connecting block. The inner edge of the grounding conductor has several first deformation portions, which are interference fit with the outer peripheral surface of the protrusion. The outer edge of the grounding conductor has several second deformation portions for interference fit with the inner wall of the conductive housing. The EMC grounding assembly includes a conductive housing, a circuit board, and the aforementioned EMC grounding terminal. This solution can achieve a grounding terminal that reduces space occupation, ensures connection strength, and obtains good EMC performance.

According to the conductive device and the horizontal electroplating equipment provided by the utility model, the annular metal conductive roller with high conductivity is adopted, and the conductive filling piece of which the density is smaller than that of the annular metal conductive roller is filled in the annular metal conductive roller, so that the conductive roller which is relatively light in weight, good in conductivity, relatively small in potential difference and capable of resisting an acid solution can be provided; the structural strength of the annular metal conductive roller can be improved through the arrangement of the reinforcers; due to the patterning arrangement of the peripheral surface of the annular metal conductive roller, enough friction force can be provided for a to-be-electroplated product, slipping is avoided, and stable conveying is carried out; the conductive device can provide a very ideal indirect contact cathode, and is suitable for horizontal electroplating of photovoltaic cells and the like.

The invention belongs to the technical field of energy storage, and particularly relates to a cascade type energy storage battery cabin which comprises a container type cabin body and a plurality of cascade type energy storage modules arranged in the container type cabin body side by side. The cascaded energy storage module comprises a frame body, two battery clusters and two energy storage converters, the two battery clusters and the two energy storage converters are arranged on the frame body, the two battery clusters are distributed up and down, the interface ends of the two battery clusters face opposite directions, the two energy storage converters are oppositely arranged between the two battery clusters, the interface ends of the two energy storage converters face outwards and are electrically connected with the two battery clusters respectively, and the two energy storage converters are connected in series; and the plurality of cascaded energy storage modules are connected in series in sequence through the energy storage converter, so that the voltage is increased step by step. The cascaded energy storage modules are uniformly placed, the upper battery clusters and the lower battery clusters are aligned, the upper battery clusters and the lower battery clusters face opposite directions, and the energy storage converters and the corresponding battery clusters face the same direction, so that the height of the whole cabin can be reduced, the energy density is improved, and the risk of ultrahigh transportation is reduced; and the potential difference between the adjacent battery clusters is small, so that the operation safety of equipment is ensured.

The invention discloses a dynamic parallel control method, device and system for a multi-branch battery system. The dynamic parallel control method for the multi-branch battery system comprises the following steps: acquiring terminal voltage and current of each battery branch to be connected in parallel; on the basis of the equivalent circuit model of each battery branch, slowly-varying voltage of each battery branch is calculated according to the terminal voltage and the current, and the slowly-varying voltage is the sum of the terminal voltage and ohm internal resistance partial voltage; and according to a preset working condition, controlling the battery branches to be connected into the main loop in sequence based on the slowly-changing voltage. According to the invention, parallel control can be carried out on the multi-branch batteries more accurately in a manner of adapting to dynamic working conditions, ring current among the branches is reduced, the service life of the battery system is prolonged, and the shutdown time of the battery system is reduced.