45results about How to "No contact resistance" patented technology

Disclosed is a conductive composition useful for the preparation of electrically conductive structures on a substrate comprising a plurality of metal particles, a plurality of glass particles and a vehicle comprising at least one cellulose derivative and at least one solid organopolysiloxane resin dissolved in a mutual organic solvent. The solid organopolysiloxane resin acts as adhesion promoter and assists in stably dispersing the metal and glass particles to avoid an agglomeration of such particles without degrading the rheological properties. From such conductive compositions uniform well adherent electrically conductive structures essentially free from defects in the form of cracks, bubbles or coarse particulates can be prepared on dielectric or semiconductor substrates such as silicon wafers in an efficient and cost-saving manner e.g. by screen printing, drying and sintering while inducing only low warping of the substrate. These characteristics render said conductive compositions particularly useful for the fabrication of electrodes of a semiconductor solar cell helping to increase the cell conversion efficiency.

The invention discloses a copper-aluminum socket connector for the electric conduction, the preparation method thereof and the application thereof. The socket connector comprises an aluminum body and a copper plug integrated into a whole by welding. The preparation method comprises the following steps: (1) manufacturing the molded aluminum body and the copper plug, and cleaning the welding surfaces of both the aluminum body and the copper plug; and (2) welding the aluminum body and the copper plug into an integrated part by adopting a flash welder or a spin friction welder to obtain the copper-aluminum socket connector semi-product for the electric conduction. The socket connector is mainly applied to a moving contact, a static contact or a conductive contact arm in a high and low voltage switch cabinet or a vacuum circuit breaker. The socket connector has the advantages of non-contact resistance, no galvanic corrosion, smaller resistance, less current conveyance loss, improved current transmission efficiency and reduced power transmission and transformation loss.

The invention discloses a global optimization control method of a ground source heat pump. Physical models of a ground source heat pump unit, a ground heat exchanger and a water pump are established and analyzed, an optimization algorithm is used for optimizing user side flow rate and ground side flow rate, and the optimized value is used as a set value to a bottom layer closed loop control to enable a ground source heat pump system to operate at an optimal state point. According to the global optimization control method of the ground source heat pump, a brand-new global control strategy of the ground source heat pump system is determined by modeling analysis of a compressor, an evaporator and a condenser of the ground source heat pump system and combining a particle swarm optimization algorithm, the influence of external interference and the control strategy on the system are fully considered, corresponding correction compensation measures are set, and strong engineering practical significance is achieved; in the actual operation process, the energy is saved by 14% compared with a constant flow operation strategy, and energy is saved by 6.7% compared with a traditional five-degreetemperature difference control strategy, and the global optimization control method of the ground source heat pump has important significance for saving the operation energy consumption of the groundsource heat pump system.

The invention discloses a high heat flow density heat dissipation cold plate and relates to the technical field of electronic component heat dissipation. The high heat flow density heat dissipation cold plate comprises an upper cover plate and a cold plate body, wherein the upper cover plate is provided with a first liquid inlet; a micro nozzle plate is disposed between the upper cover plate and the cold plate body, and is provided with a plurality of micro nozzles; the first liquid inlet communicates with the micro nozzles; the cold plate body is provided therein with a cold plate cavity; thelower end of the cold plate body is provided with a first liquid outlet; and the first liquid outlet communicates with the cold plate cavity. The high heat flow density heat dissipation cold plate exchanges heat of heat-generating components by the cold plate cavity, requires less working mediums, is good in heat dissipation and low in degree of superheat and has no contact thermal resistance ona solid surface.

The invention discloses a compound electrode containing graphene and metallic organic framework and a preparation method thereof. The preparation method for the compound electrode comprises the following steps: 1) pre-treating a graphite plate; 2) preparing graphene by anodizing and peeling; 3) modifying graphene; 4) preparing the metallic organic framework. The compound electrode containing graphene and metallic organic framework disclosed by the invention has the advantages of large specific surface area, low resistance, structure stability, and the like, fully utilizes the advantage of large specific surface area of the graphene and the metallic organic framework, overcomes the defect of low electrical conductivity of the metallic organic framework and fully utilizes the advantages of the graphene and the metallic organic framework. The compound electrode can be used as an anode of a bioelectrochemical system.

The invention discloses an array substrate. The array substrate comprises a display area and a peripheral area adjacent to the display area. The display area comprises a plurality of pixel units. A thin film transistor and a pixel electrode are arranged in each pixel unit. Drain electrodes of the thin film transistors are contacted with the pixel electrodes directly. The invention further discloses a display device comprising the array substrate and a manufacturing method of the array substrate. In the array substrate, the pixel electrodes are contacted with the thin film transistors directly, so that contact resistance can not be caused, and an electric field between a public electrode and the pixel electrodes can be distributed evenly.

The invention relates to a battery electrode which comprises a conductive porous material basal body and a polymer, wherein at least the partial polymer is distributed in millipores of the partial conductive porous material basal body, and the conductive porous material basal body is divided into an upper layer, a lower layer and a middle layer with a liquid isolating action by the polymer distributed in the millipores of the partial conductive porous material basal body, wherein the content of the polymer in the middle layer accounts for more than 75wt% of the total content of the polymer in the conductive porous material basal body, and the content of the polymer in the upper layer and the lower layer accounts for less than 25wt% of the total content of the polymer in the conductive porous material basal body. The invention also provides a vanadium redox flow battery comprising the battery electrode, and because the contact resistance is eliminated, the vanadium redox flow battery has low internal resistance and high charge and discharge efficiency.

The invention discloses an adjustable-oil-temperature three-dimensional rib pipe oil cooler which comprises a shell. A liquid inlet header is arranged at the upper portion of the shell, and a liquid outlet header is arranged at the lower portion of the shell. The adjustable-oil-temperature three-dimensional rib pipe oil cooler is characterized in that multiple heat transfer pipes are connected between the liquid inlet header and the liquid outlet header and are three-dimensional rib pipes, and the three-dimensional rib pipes are outer three-dimensional rib pipes or inner three-dimensional rib pipes or inner and outer three-dimensional rib pipes; according to the outer three-dimensional rib pipes, multiple three-dimensional protruding units are arranged on the outer surfaces of the three-dimensional rib pipes; according to the inner three-dimensional rib pipes, multiple three-dimensional protruding units are arranged on the inner wall face of the three-dimensional rib pipes; according to the inner and outer three-dimensional rib pipes, multiple three-dimensional protruding units are arranged on the outer surfaces and the inner wall faces of the three-dimensional rib pipes; a partition plate is arranged in each of the liquid inlet header and the liquid outlet header; and a fan is arranged in the shell, an automatic air speed adjusting device is arranged in the fan, a temperature detection device is arranged at the position of an outlet of the liquid outlet header, and the temperature detection device is connected with the automatic air speed adjusting device. The adjustable-oil-temperature three-dimensional rib pipe oil cooler can be widely applied to the fields of energy, chemical engineering, refrigerating and the like.

The invention relates to a shelf device of a vacuum freeze drier. The shelf device of the vacuum freeze drier comprises shelves, a hydraulic column and a drying box. The shelves are arranged from top to bottom at equal intervals and hung inside the drying box. Every two adjacent vertical shelves are connected through hinges located at the two ends of the shelves. The front portion of the bottom-layer shelf is connected with the bottom of the drying box through bolts. A side plate is welded on the periphery of each layer shelf. According to the shelf device of the vacuum freeze drier, product trays are removed, the side plate is welded on the periphery of each layer shelf, the shelves replace the trays, and bulk pharmaceutical chemicals are directly frozen and dried on the shelves. The shelf device of the vacuum freeze drier has the advantages that contact thermal resistance does not exist between the bulk pharmaceutical chemicals and the shelves, so that the freeze-drying process is greatly accelerated, and the bulk pharmaceutical chemicals can be rapidly fed, discharged and cleaned.

The invention provides a heat conduction and heat dissipation integrated flat heat pipe. A condenser is designed in the cavity position of a traditional flat heat pipe to replace a condensation surface, steam generated at an evaporation end can be directly condensed on the surface of the condenser, heat released by condensation is directly taken away by a cooling working medium inside the condenser, and integration of heat conduction and heat sink heat dissipation of the flat heat pipe is achieved. Compared with the traditional flat heat pipe, the heat conduction and heat dissipation integrated flat heat pipe has the following advantages that 1) the steam generated at the evaporation end does not need to penetrate through a liquid layer and is directly condensed on the surface of the condenser, and gas-liquid separation in the true sense is achieved; 2) the heat released in the condensation process is directly taken away by the cooling working medium flowing inside the condenser, and contact heat resistance between the flat heat pipe and a heat sink is avoided; and 3) the condenser is arranged in the cavity position of the traditional flat heat pipe, the steam is condensed, and meanwhile, the supporting effect on the interior of the flat heat pipe is achieved, so that the structure is more compact, and the total volume of heat conduction and heat dissipation of the flat heat pipe is reduced.

The invention discloses a photocuring type 3D printing manufacturing method of an integral type SiC-based microreactor. The preparation method comprises the following steps: firstly, carrying out curing molding on a reactor by adopting integrated photocuring 3D printing, carrying out high-temperature treatment, and loading methanol reforming slurry and methanol combustion slurry by adopting a flow impregnation process, so as to obtain the SiC microreactor with self-heating starting performance; structurally, inlets and outlets of reformed gas and combustion gas are respectively located at the top and the bottom of the reactor main body, combustion chambers and reforming chambers in the reactor main body are alternately arranged, and power amplification can be realized through superposition of different layers. High-precision and short-period microreactor manufacturing can be realized, the problem of poor air tightness of the microreactor is solved, the microreactor has the characteristics of high catalyst loading strength, high temperature resistance, oxidation resistance, corrosion resistance and long service lifetime, meanwhile, no contact thermal resistance exists between a high-porosity carrier and the wall surface of the reaction chamber, the heat transfer performance is enhanced, and the hydrogen production performance is effectively improved.

The invention relates to a soft-pack battery thermal control device, in particular to a soft-pack battery thermal control device which can be soaked into cooling water. Furthermore, in view of the defect that the anticorrosion performance of packaging materials for batteries is not inadequate in the prior art, the invention provides a corresponding packaging material; the packaging material is made from an aluminum foil layer resistant to cooling water corrosion and a plastic layer arranged on the surface of the aluminum foil layer.

Provides a shaft seal mechanism for improving air pressure distribution near the split portion of the sheet seal, improved sealing performance, a structure for mounting the shaft seal mechanism on the stator, and a turbine, and the structure for mounting the shaft seal mechanism on the stator is provided on the A structure in which an annular space between the rotor and the stator and an annular shaft seal mechanism having one or more divided parts are attached to the stator, wherein the shaft seal mechanism is composed of a laminated sheet group consisting of a plurality of sheets, and the sheet group is connected to the rotor. Sliding contact, and the outer peripheral root of the thin plate group is bonded, the inner peripheral free end is not bonded, the rotor surface forms an acute angle with the thin plate, the above-mentioned annular space is divided into a high-pressure side area and a low-pressure side area, and the stator can accommodate The groove of the above-mentioned shaft seal mechanism is inserted into the gap formed after the above-mentioned shaft seal mechanism is assembled into the above-mentioned groove to install the shaft seal mechanism on the stator. An annular recess is arranged on the surface.

The invention belongs to the technical field of heat dissipation of electronic components, and provides a two-phase immersed liquid cooling case based on thermoelectric refrigeration. Heat generated in the working process of the battery is taken away by vaporization of the fluorinated liquid on the surfaces of electronic components such as a CPU, finally the heat is transferred to the external environment through the thermoelectric refrigeration system, and therefore the electronic components such as the CPU are in a proper working temperature range. Compared with a traditional cooling mode, the liquid cooling case disclosed in the invention is advantageous in that the phase change of the fluorinated liquid is fully utilized to absorb heat generated by the battery during working, no contact thermal resistance exists, the heat taking capacity is high, and the heat dissipation efficiency is high; the filled glass beads occupy the vast majority of gap space, so that the dosage of the fluorination liquid is reduced to the minimum, and the cooling cost is greatly reduced; the thermoelectric refrigeration sheet is adopted to condense the fluorinated liquid steam, the condensation temperature is easy to control, and refrigerant pollution is prevented.

The invention relates to the technical field of electrical connection, and solves the problems that an existing safety combined plug bush is poor in electric contact, existence of relatively many safety socket components cause troublesome in manufacturing and assembling, contact is unreliable in the aspect of electric conduction, and burning tends to occur when overcurrent is heavy. The electrodeclamping piece comprises a connecting piece (1), a pair of main clamping pieces (2) is arranged at the two corresponding side edges of the connecting piece (1), a pair of auxiliary clamping pieces (3)is arranged at the other two side edges of the connecting piece (1), and the pair of main clamping pieces (2) and the pair of auxiliary clamping pieces (3) are located at the same side of the plate face of the connecting piece (1) and are of an integrated structure. The socket comprises a shell (8), the shell (8) is provided with a pair of jacks (9), a pair of the electrode clamping pieces (10) are arranged in the shell (8), openings of the auxiliary clamping pieces (3) face outwards and are correspondingly arranged at the inner sides of the jacks (9) respectively, and the connecting piece (1) is arranged close to the bottom in the shell (8). Electric shock is not easy to occur.

The invention relates to the technical field of detection, and discloses a testing device which is simple in structure and has no contact impedance inside. The testing device comprises an elastic piece, an elastic terminal provided with an arc-shaped elastic deformation part, and a terminal plate provided with a groove capable of accommodating the elastic piece, wherein the inner arc of the elastic deformation part is clamped on the corresponding elastic piece; and an arc-shaped groove matched with an elastic terminal is formed in the groove, the outer arc of the elastic deformation part is embedded in the arc-shaped groove, the upper end of the arc-shaped groove extends to the upper surface of the terminal plate, and the lower end of the arc-shaped groove extends to the lower surface of the terminal plate. According to the invention, the arc-shaped elastic terminal is utilized, so that an elastic recovery effect is achieved, the overall resistance can be prevented from being too large, the condition of contact impedance is avoided, and the interference is reduced; and a resilience force can be provided for the elastic terminal in cooperation with the elastic piece, the elastic service life of the elastic terminal is prolonged, the elastic terminal is fixed and isolated in cooperation with the terminal board, and meanwhile the assembling difficulty is simplified in cooperation with the clamping and embedding connection modes.

The invention relates to a copper-aluminum composite material for a soft package battery connecting piece and a production process thereof. The process comprises the following steps of: pretreating the surfaces of copper and aluminum to remove an oxide film on the surface of the metal, performing hot rolling twice under argon atmosphere protection to achieve the thickness of a finished product, and finally, performing heat treatment annealing to increase the bonding strength of a copper-aluminum composite plate, wherein the aluminum plate in the copper-aluminum composite material comprises thefollowing components percentage by weight: 0-0.2% of Fe, 0-0.1% of Si, 0-0.02% of Zn, 0-0.02% of Ga, and the balance being Al, the thickness of the aluminum plate is 3-13mm, the copper plate is red copper with the purity of 99.993 percent, and the thickness of the copper plate is 0.4-2.0mm. The copper-aluminum composite material and the production process thereof effectively solve the problem ofpack connection of the lithium battery pack, and achieve safe, reliable, light and simple series-parallel connection of the lithium battery pack, and the product has the characteristics of high composite strength, no contact resistance between copper and aluminum, and a reliable quality stability point; and moreover, the copper-aluminum composite material for the soft package battery connecting piece and the production process thereof have the advantages of safety, reliability, high composite strength and no contact resistance between copper and aluminum.

The invention discloses an electrical connector and a vehicle having same. The electrical connector comprises a first metal bar, a second metal bar, an elastic electrical connector and a press and fixation assembly. The first metal bar is provided with a metal boss; the second metal bar is attached on the metal boss; the elastic electrical connector is arranged between the first metal bar and the second metal bar and is elastically abutted against the first metal bar and the second metal bar; the elastic electrical connector and each metal bar form multichannel line contact; and the press and fixation assembly enables the second metal bar to be pressed and fixed on the metal boss. According to the electrical connector, in the vehicle driving process, when the first metal bar moves with respect to the second metal bar due to vibration of the vehicle, it is can still be ensured that the first metal bar and the second metal bar have larger contact area, so that contact resistance between the two metal bars does not increase greatly.

The invention relates to an integrated type high-power LED lamp for industrial use based on a phase-change heat transfer technology. The integrated type high-power LED lamp for the industrial use comprises a COB light source, an evaporation plate and a radiator which are sequentially connected from bottom to top; the upper end of the evaporation plate and the lower end of the radiator define a vacuumized containing cavity, and the containing cavity is internally filled with a liquid working medium; and liquid absorption cores with one micro-groove-shaped surfaces are arranged at the upper end and the lower end of the interior of the containing cavity separately. The integrated type high-power LED lamp for the industrial use is compact in structure, small in size, light in weight, capable of meeting high-power illumination and fast in radiating, and relates to the technical field of LED lamp radiating.

The invention discloses a lens type simulation device of a high heating flux heating surface. The lens type simulation device structurally comprises a fixing component, a parallel light generator, a convex lens, a cooler and a visor, wherein the parallel light generator is installed on the fixing component and used for emitting parallel light which has low energy flux density; the convex lens and the cooler are sequentially arranged in the emitting direction of the parallel light, and the convex lens enables the parallel light with low energy flux density to form the high heating flux heating surface on the surface of the cooler. The high heating flux heating surface obtained by the simulation device has the advantages of being uniform in distribution, high in heating flux, free of thermal contact resistance, high in heating efficiency and rapid in temperature rise, the heating flux and the radius of a heating area are adjustable, heating boundary areas with different shapes and areas can be obtained by changing the shape and size of light-permissible holes of the visor, and the various requirements for high heating flux heating in the field of thermal testing and physical experiments can be met.

The invention belongs to the field of graphene heating film preparation, and in particular, relates to a three-layer coextrusion preparation method for graphene composite heating films. A machining method for a first-layer polyester film and a third-layer polyester film comprises ester polymerization-melting-extrusion-casting-stretching-thermal shaping; a machining method for a middle-layer graphene / polyester composite film with metal foil strips comprises graphene / polyester compounding-melting-extrusion-casting-stretching-implantation of the metal foil strips-cutting-thermal shaping-rolling;in the thermal shaping process, two sides of the graphene / polyester composite film with the metal foil strips are covered on the first-layer polyester film and the third-layer polyester film; and through rolling, the graphene composite heating films are formed. The graphene composite heating films are not contacted with resistance layer by layer, so that the demands in various application fields can be met.

The invention discloses a parallel stream heat exchanger integrated with a microchannel and an outer fin, comprising a left collector tube, a right collector tube, an upper cover board, a lower cover board, a cooling fin set, an air inlet pipe and a liquid outlet pipe; the cooling fin is integrated with a fin and aluminium profile, a microchannel is arranged on the aluminium profile, and the diameter or edge distance of the microchannel is 0.5-3mm; the microchannel of the cooling fin is communicated with the left collector tube and the right collector tube, distance pieces which are arrayed in a staggering way are arranged in the middle of the left and right collector tubes at interval, the left and right collector tubes are divided into a plurality of areas, the air inlet pipe and the liquid outlet pipe and the left and right collector tubes are connected by welding, and the upper cover board and the lower cover board are respectively connected with the left and right collector tubes; by utilizing the microchannel technology, integral outer fin technology and collector tube technology, the invention effectively solves the problem of thermal contact resistance of sheets and the fins; the structure is compact, heat exchanging efficiency is high, the volume is small, the quality is light, the processing is simple, and the heat exchanger adopts all aluminium composite material, thereby greatly reducing the cost.

The invention provides a three-dimensional fin heat exchange plate machining process. The three-dimensional fin heat exchange plate machining process mainly comprises the steps of material selection,unloading, clamping and cutting: (1) material selection: a metal plate with the cutting machinability and good ductility is selected as a basal body plate; (2) unloading: the basal body plate in the step (1) is premachined as a workpiece with a thickness of not less than 0.5 mm; (3) clamping: the workpiece in the step (2) is positioned on three-dimensional fin heat exchange plate cutting equipmentfor positioning; and (4) cutting: the three-dimensional fin heat exchange plate cutting equipment is started for cutting to obtain a three-dimensional fin heat exchange plate. The machining process is adopted to machine three-dimensional fin heat exchange plates with fins staggered on flat plate workpieces and 20-90 included angles between the fins and the horizontal plane; and through special configuration, fluids passing through the surfaces of the fins can form streaming flows, crossing flows, turbulent flows or mixed flows, so that the fluids are low in resistance and excellent in transparency, and the heat exchange efficiency of the heat exchange plates can be greatly improved.

The invention discloses an array substrate. The array substrate includes a display area and a peripheral area adjacent to the display area. The display area includes a plurality of pixel units, and each of the pixel units is provided with a thin film transistor and a pixel electrode. , wherein the drain of the thin film transistor is in direct contact with the pixel electrode. The invention also discloses a display device including the array substrate and a manufacturing method of the array substrate. In the array substrate provided by the present invention, the pixel electrode is in direct contact with the thin film transistor, so that no contact resistance occurs, and the electric field between the common electrode and the pixel electrode can be evenly distributed.

The invention discloses a lens type simulation device of a high heating flux heating surface. The lens type simulation device structurally comprises a fixing component, a parallel light generator, a convex lens, a cooler and a visor, wherein the parallel light generator is installed on the fixing component and used for emitting parallel light which has low energy flux density; the convex lens and the cooler are sequentially arranged in the emitting direction of the parallel light, and the convex lens enables the parallel light with low energy flux density to form the high heating flux heating surface on the surface of the cooler. The high heating flux heating surface obtained by the simulation device has the advantages of being uniform in distribution, high in heating flux, free of thermal contact resistance, high in heating efficiency and rapid in temperature rise, the heating flux and the radius of a heating area are adjustable, heating boundary areas with different shapes and areas can be obtained by changing the shape and size of light-permissible holes of the visor, and the various requirements for high heating flux heating in the field of thermal testing and physical experiments can be met.

The invention discloses a large-power LED lamp based on compound phase-change energy storing material radiating. The large-power LED lamp comprises a reflecting cup, a large-power LED light source arranged at the bottom part of the reflecting cup, and a light transmission plate which is formed by a PC plate or an organic glass plate and is fixed to the front end of the reflecting cup through a mounting ring; a compound phase-change energy storing radiating body which is peripherally equipped with radiating aluminum fins is connected to the rear end of the reflecting cup; a compound phase-change material container of which one end is opened is formed in the middle part of the compound phase-change energy storing radiator; compound phase-change materials fill in the compound phase-change material container; a radiator top cover for sealing is arranged at the opening end of the compound phase-change material container through a screw. With the adoption of the large-power LED lamp based on the compound phase-change energy storing material radiating, the shortages of the existing radiating technology of large-power LED down lamps can be overcome; the LED lamp has a good radiating effect, and is influenced a little by the periodic high-density heat flow, simple in structure, long in service life, convenient to mount, and low in cost.

The invention discloses an efficient and safe tubular bus static contact. The invention relates to power equipment, in particular to an efficient and safe tubular bus static contact. The invention provides an efficient and safe tubular bus static contact which is simple in structure and ensures safe transmission of current. When the efficient and safe tubular bus static contact in operation, a tubular bus is connected in two bus holding clamps, a copper pipe is connected in two copper pipe holding clamps, the bottoms of the bus holding clamps are provided with the symmetrically arranged sinking holes, upper counter bores are symmetrically formed in the tops of the copper pipe holding clamps, the two ends of a semicircular wire in the annular wire coil can be welded into the lower counter bores and the upper counter bores conveniently, the bus holding clamps, the annular wire coils and the copper pipe holding clamps form a whole, and current transmission can be effectively guaranteed (meanwhile, no contact resistance exists). Four aluminum alloy semicircular wires are arranged, so that the rigidity and the damping performance of the static contact of the tubular bus are ensured; andtherefore, the operation of the switch equipment can be efficiently and safely ensured, and the safe operation of power transmission and transformation is ensured. The efficient and safe tubular busstatic contact is convenient to machine and reliable to operate.