164results about How to "Improve conduction efficiency" 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 provides a preparation method of an MXene-based alkaline electrolytic water hydrogen production electrode. The preparation method comprises the following steps: 1, pretreatment of a base material: cleaning impurities on the base material, drying, and carrying out sand blasting roughening treatment; secondly, first metal powder and second metal powder are weighed and mixed according to a certain proportion to be guided into a powder mixing machine, vacuum drying is conducted after mixing treatment, third metal powder is prepared, the first metal powder is MAX phase powder, and the second metal powder is one or more of metal simple substances or alloys used for water electrolysis hydrogen production; thirdly, third metal powder is deposited on the surface of the pretreated base material through the plasma spraying technology, and a composite coating is obtained; 4, immersing the base material treated in the step 3 into an activation solution for activation; 5, after activation is finished, the base material is taken out and dried, and then the electrode is obtained.The method optimizes the conductivity and hydrophilicity of the electrode, and the diversity of the morphology of a plasma spraying electrode coating is improved.

The triangular runners are arranged on the inner sides of an anode plate and a cathode plate of the PEM electrolytic bath, the vertex angle is 30-90 degrees (preferably 45-60 degrees), the depth of each runner is 0.5-5 mm, the width of each runner is 0.5-5 mm, the interval of each runner is 1-10 mm, and the triangular runners can be arranged in parallel, staggered and the like. The anode plate and the cathode plate can be made of metal (such as stainless steel and titanium alloy) or graphite materials, and cooling channels can be arranged outside the anode plate and the cathode plate. The membrane electrode assembly comprises a proton exchange membrane (such as a perfluorosulfonic acid membrane), an anode catalyst layer (such as iridium dioxide) and a cathode catalyst layer (such as platinum or platinum alloy). According to the electrolytic cell, fluid disturbance is increased, gas discharge is improved, membrane electrode hydrogen attachment is effectively reduced, proton conduction and electrode reaction activity are improved, and compared with a traditional electrolytic cell, under the same condition, the current density, the hydrogen production efficiency and the hydrogen purity are higher, energy consumption and cost are lower, and good application prospects and economic benefits are achieved.

The utility model discloses an optical fiber woven luminous fabric for an automobile atmosphere lamp, and relates to the technical field of textiles. The warp-knitted weft-inserted fabric is formed by inserting weft yarns into warp-knitted fabric formed by warp yarns in the weft direction, the weft yarns comprise a plurality of optical fibers, the optical fibers form specific patterns on the warp-knitted weft-inserted fabric, at least one end of each optical fiber is connected with a light source controller after being bundled, and light emitted by an LED light source is guided in through the light source controller. The light is transmitted to the surface of the warp-knitted weft-insertion fabric through the optical fiber, so that the specific pattern emits light. The optical fibers are embedded into the fabric through a specific weaving process, so that uniform distribution of light rays and flexible design of patterns are realized, and the requirements of consumers on diversified and personalized atmosphere lamps are met; the optical fiber has excellent durability and anti-aging performance, the service life is long, the frequency of replacement and maintenance is reduced, and the use cost is reduced; the conduction efficiency of the optical fiber is high, heat is little during light emitting, and energy consumption and safety risks are reduced.

The invention discloses a micro-drip-irrigation three-dimensional soil fixation mesh pad and a preparation method thereof, and relates to the technical field of ecological environment protection, the micro-drip-irrigation three-dimensional soil fixation mesh pad comprises an irrigation device and a three-dimensional soil fixation mesh pad, and further comprises a micro-drip-irrigation assembly connected with the three-dimensional soil fixation mesh pad, the micro-drip irrigation assembly comprises a plurality of reinforcing ribs used for transmitting fluid and a plurality of micro-drip irrigation switches arranged on the reinforcing ribs, and the micro-drip irrigation switches are used for controlling the speed of sucking the fluid from the reinforcing ribs; the problem that irrigation is uneven due to the fact that an irrigation line of an existing three-dimensional geonet pad irrigation device is long is solved.

The invention belongs to the technical field of conductive materials, and particularly discloses graphene conductive paste and a preparation method and application thereof. The graphene conductive paste is prepared from the following raw materials in parts by weight: 1 to 10 parts of graphene, 0.5 to 10 parts of conductive carbon black, 0.5 to 1 part of a dispersing agent, 0.5 to 2 parts of a stabilizer, 80 to 90 parts of a solvent, 0.5 to 1.5 parts of a surfactant, 1 to 5 parts of a modified silane coupling agent and 0.5 to 1 part of an adhesive, the molecular structure of the modified silane coupling agent contains fluorine element and phosphorus element, and also contains phenolic hydroxyl group, and various groups have synergistic interaction, so that the performance of the graphene conductive paste is improved together; the invention also discloses a preparation method and application of the graphene conductive paste. The graphene conductive paste provided by the invention has excellent conductivity, cohesiveness, corrosion resistance, dispersity and thermal stability, and can be widely applied to preparation of lead-acid batteries, sodium-ion batteries and lithium-ion batteries.

The moisture power generation device provided by the invention at least comprises a core layer, a skin layer and a conductive metal wire wound outside the skin layer, the skin layer comprises polyvinyl alcohol, the core layer comprises thermoplastic polyurethane and conductive filler, the skin layer wraps the core layer, and the conductive metal wires are not in direct contact with the core layer. The preparation method at least comprises the following steps: completely dissolving polyvinyl alcohol powder in a mixed solution of water and DMSO to prepare a skin layer spinning solution; stirring and mixing the DMF solution of the thermoplastic polyurethane powder and the DMF dispersion liquid of the conductive filler at a high speed to prepare a core layer spinning solution; and spinning the skin layer spinning solution and the core layer spinning solution at different extrusion speeds, carrying out coagulating bath and drying treatment, and finally winding a metal wire on the periphery of the skin layer to prepare the moisture power generation device. The device has good thin moisture absorption performance, can generate more current, improves the output power of the power generation device, is simple in preparation process, facilitates continuous production, and can be widely applied to flexible wearable equipment and self-powered power supplies.

A liquid inlet pipe is arranged on a bottom plate of a bottom supporting groove, a lower sealing plate is installed in the bottom supporting groove, an anode main body and a workpiece copper pipe are assembled on the lower sealing plate, a liquid inlet hole is formed in the lower sealing plate between the anode main body and the workpiece copper pipe, the liquid inlet pipe is communicated with the liquid inlet hole, and the liquid inlet pipe is communicated with the liquid inlet hole. The liquid return box body is a sealed box body with an opening in the bottom surface, an upper sealing plate is mounted on the opening end surface of the liquid return box body, the top of the liquid return box body is mounted on the support frame main body through a group of lifting cylinders, and a circulating liquid outlet of the upper sealing plate is in sealed butt joint with the upper end surface of a workpiece copper pipe due to the maximum descending stroke of the lifting cylinders; the anode wiring mechanism is used for being connected with an anode main body located in the liquid return box body and assembled on the liquid return box body, and the cathode wiring mechanism is used for being connected with a workpiece copper pipe and assembled on the supporting frame main body. According to the utility model, a plating solution forms a fluid between the workpiece copper pipe and the anode main body, and the plating solution is rapidly deposited and electroplated under the action of a strong electric field.

The invention belongs to the technical field of high polymer materials, and particularly relates to a black phosphorus polyether-ether-ketone modified antistatic composite material and application. The composite material comprises the following raw materials in parts by mass: 100 parts of modified polyether-ether-ketone, 3-8 parts of modified black phosphorus nanosheets, 0.5-3 parts of functionalized graphene quantum dots, 0.5-2 parts of an interface modifier, 0.5-1 part of an antioxidant and 1-3 parts of a processing aid. According to the material, the problem of high surface resistivity of a traditional PEEK material is solved, the material is endowed with excellent antistatic performance, and meanwhile, the original mechanical strength is kept. Through the improvements, the composite material shows important actual value and market prospect in the high-end application fields of automobile parts, engine accessories, power battery shells, charging guns, charging piles and the like.

The invention discloses a lithium negative electrode with a multi-layer composite artificial SEI film and a preparation method and application of the lithium negative electrode, and relates to the technical field of lithium batteries. Comprising a porous material, a lithium-loving layer, lithium metal and an inorganic composite material, a lithium-loving layer and lithium metal are sequentially deposited on one side of the porous material, and an inorganic composite material is deposited on the other side of the porous material; the porous material is at least one of a porous carbon material and a porous silicon material; the inorganic composite material is at least five of LiF, Li2O, Li3N, Li2CO3, Li2S, Li10GeP2S12 and Li3PO4, and the inorganic composite material is at least five of Li2CO3, Li2S, Li10GeP2S12 and Li3PO4. According to the invention, the lithium-loving sponge-like porous structure is constructed, the lithium deposition space is increased, the growth of lithium dendrites is effectively inhibited, the SEI layer is prevented from being punctured, and meanwhile, the artificial SEI layer with high stability, excellent ionic conductivity and mechanical strength is constructed by adopting the multifunctional inorganic composite material, so that the cycle performance, the safety and the overall efficiency of the lithium battery are improved.

The invention belongs to the field of preparation of negative electrode materials, and particularly relates to a lithium ion battery silicon negative electrode with an optimized alloying array transition layer and a preparation method of the lithium ion battery silicon negative electrode. A potassium hydroxide solution is used as an electrolyte, a copper foil is placed on a constant voltage source to be subjected to anodic oxidation, a Cu (OH) 2 nanowire array with the surface evenly growing is obtained, annealing treatment of argon and hydrogen mixed gas is conducted before a silicon active substance is coated through magnetron sputtering, and the Cu nanowire is obtained through reduction. After the Si active material layer is coated by magnetron sputtering, the whole electrode is subjected to annealing treatment, so that a Cu3Si alloy is generated at the interface of Cu and Si, and the contact strength and the conductive efficiency of the Cu and the Si are enhanced. According to the invention, the problem that the silicon negative electrode is not firmly adhered to the current collector and is easy to fall off from the current collector to cause power loss in the battery circulation process under the condition of violent volume change is solved. The reaction specific surface area is increased through the three-dimensional nanowire array structure, and the performance of the silicon negative electrode under the large current density is enhanced through the transition layer of the copper-silicon alloy.

The invention discloses an electrowetting display device structure and a method for preparing the electrowetting display device structure, the electrowetting display device structure comprises a first substrate, a second substrate, a sealing frame and a pixel wall, the second substrate and the first substrate are arranged in parallel, a first conductive layer is arranged on one side close to the first substrate, and a second conductive layer is arranged on the other side close to the second substrate. A hydrophobic insulating layer is arranged on the first conductive layer; the sealing frame is arranged between the first substrate and the second substrate, a sealing cavity is formed among the first substrate, the sealing frame and the second substrate, and the sealing cavity is filled with polar liquid; the pixel wall is located in the sealing cavity and arranged on the hydrophobic insulating layer, a pixel grid is defined, the pixel grid is filled with non-polar liquid which is immiscible with the polar liquid, the pixel wall comprises a second conducting layer, and the second conducting layer and the first conducting layer form a positive electrode and a negative electrode respectively. According to the electrowetting display device structure, the response time of the electrowetting display device can be prolonged, and the conductive efficiency of the electrowetting display device can be improved.

The invention discloses an automatic grid-connected control system for multiple groups of generator cars, and relates to the technical field of power supply equipment. According to the invention, accurate adjustment of the conductive contact strip in a complex environment is realized through the multi-dimensional moving mechanism, and the device adapts to various conditions such as cable sagging and angle deviation. The rotating mechanism driven by the servo motor is matched with the adjusting electric cylinder to ensure that the generator car can be quickly connected to a grid without accurate positioning, and meanwhile, the air cleaning device is used for effectively removing redundant materials, so that the maintenance cost is reduced. According to the system, the grid-connected efficiency, the power supply stability and the adaptability are remarkably improved, and particularly, the system has remarkable advantages in disaster emergency power supply.

This application relates to the field of photovoltaic louver technology, and discloses an electrical connection component, a photovoltaic louver, and a power generation system. The electrical connection component includes a housing and a conductive component. The housing has a mounting cavity and a first through hole, which extends along a first direction and communicates with the mounting cavity. The conductive component includes a wire-passing portion and a clamping portion connected together. The wire-passing portion is installed in the mounting cavity and has a wire-passing hole that communicates with the first through hole within the mounting cavity. The clamping portion connects to the wire-passing portion and extends beyond the mounting cavity, forming a clamping area. The clamping area and the wire-passing hole are arranged side by side in a second direction. The clamping area of ​​the clamping portion is used to clamp the conductive electrode of the photovoltaic blade. The first through hole and the wire-passing hole are used for the busbar to pass through. Through the above method, the embodiments of this application can improve the connection reliability and conductivity efficiency between the photovoltaic blade and the busbar, as well as enhance the compactness and aesthetics of the overall structure of the photovoltaic louver.

The utility model relates to a kind of LED epitaxial structures, comprising: substrate;N type layer;Active layer is located on N type;P type layer, located on active layer;Wherein, the P type layer includes P type window layer, P type window layer includes several first laminated structure, each first laminated structure includes the GaInP layer, first GaP layer and second GaP layer of sequentially laminated, the P type doping concentration of second GaP layer in each first laminated structure is greater than the P type doping concentration of first GaP layer.The GaInP layer of the utility model has higher band gap, plays the role of optical window layer, can reduce light absorption loss;GaP has lower band gap, first GaP layer and second GaP layer play the role of buffer layer / transition layer, so the combination of GaInP layer, first GaP layer and second GaP layer realizes the balance of band matching and carrier transport efficiency, conducive to the efficient extension of current.

The utility model discloses a table type constant temperature reaction instrument, including reaction instrument shell, constant temperature cold bath assembly, oscillation assembly and control assembly, the reaction instrument shell is composed of main shell and shell cover, the top of the shell cavity of main shell is provided with cavity hole, constant temperature cold bath assembly is provided in the cavity hole, oscillation assembly is provided in the cavity hole. The oscillation assembly is installed at the bottom of the constant-temperature cold bath assembly, the control assembly is installed in the shell cavity, the constant-temperature cold bath assembly comprises a heat insulation shell, a constant-temperature hole is formed in the heat insulation shell, a cold bath seat is installed in the constant-temperature hole in an embedded mode, and the control assembly is installed in the shell cavity. The bottom of the cold bath base is connected with a semiconductor chilling plate arranged in the heat insulation shell, and a water cooling radiator is installed at the hot end of the semiconductor chilling plate. The incubation box has the advantages that a plurality of cold bath tank bodies can be provided, the temperature in the tank bodies can rapidly reach the specified temperature, the conduction efficiency is high, the temperature distribution is uniform, and the environment needed by the incubation box is optimized in cooperation with oscillation.

The utility model discloses a kind of hand warmer of automatic response heating, including two groups of face shell and two groups of bottom shell, the face shell is installed on bottom shell, heating sheet is installed on the face shell, heat-conducting hardware shell is installed on the heating sheet, the heat-conducting hardware shell is connected with face shell;Magnet positioning cavity is set in the top and bottom of bottom shell inner wall, magnet is installed in the magnet positioning cavity inside;Battery is installed in the middle end of bottom shell inner cavity, PCBA board is installed in the head of bottom shell inner cavity, the PCBA board and battery and heating sheet are electrically connected.The utility model has the advantages of being easy to use, solves the portable hand warmer of the current magnetic attraction function in the process of using, not convenient for the hand of user to induct, to realize the function of automatic heating, reduces the problem of intelligence in the process of using hand warmer.

In order to overcome the problems of insufficient ion conduction efficiency and interface side reaction between the existing sulfide solid electrolyte and a positive electrode, the invention provides a solid-state battery and a preparation method thereof, and the solid-state battery comprises a positive electrode plate and a negative electrode assembly which are stacked in sequence, the positive plate comprises a positive current collector and a positive material layer arranged on the surface of the positive current collector, the negative assembly comprises a negative plate, a sulfide electrolyte layer and a polymer electrolyte layer, the sulfide electrolyte layer is located on the surface of the negative plate, and the polymer electrolyte layer is located on the surface of the sulfide electrolyte layer. A corrugated groove is formed in the surface, deviating from the negative plate, of the sulfide electrolyte layer, the polymer electrolyte layer is located in the corrugated groove, and the polymer electrolyte layer abuts against the positive electrode material layer and partially permeates into the positive electrode material layer.

This invention proposes a graphene film-based photoconductive semiconductor switch and its application method. It includes a substrate, a graphene film layer, a semiconductor layer, a first electrode, a second electrode, and a light incident window. The substrate is an insulating, high-temperature resistant substrate with the semiconductor layer fixedly attached to its top surface. The graphene film layer covers the top surface of the semiconductor layer, forming an ohmic contact between the graphene film layer and the semiconductor layer. This invention utilizes the excellent conductivity of graphene to form an ohmic contact between the graphene film layer and the semiconductor layer, effectively reducing the switch's on-resistance and improving its conduction efficiency. Simultaneously, the ultra-thin structure of the graphene film layer enhances laser absorption efficiency, improves the switch's laser trigger sensitivity, and shortens the response time. The substrate is made of insulating, high-temperature resistant alumina ceramic material, which improves the switch's high-temperature stability and insulation performance, extending its service life. The overall structure is simple, cost-controllable, and highly practical, showing significant improvements in response speed, conduction performance, and stability.

The invention discloses a preparation method of a lithium ion battery negative electrode, and relates to the technical field of lithium batteries, and the preparation method comprises the following steps: S1, taking a self-assembled carbon nanotube and a carbonized polyimide film, mixing and grinding to obtain an active substance; s2, mixing and grinding an active substance and acetylene black to obtain electrode powder; s3, polyvinylidene fluoride is dissolved in N-methyl pyrrolidone, and an electrode adhesive is obtained; s4, uniformly mixing the electrode powder and an electrode adhesive to obtain electrode slurry; and S5, coating the surface of a copper foil with the electrode slurry, and drying to obtain the lithium ion battery negative electrode. The self-assembled carbon nanotubes and the carbonized polyimide film are mixed and ground to obtain an active substance, acetylene black is supplemented to prepare the electrode powder, and the N-methyl pyrrolidone solution of polyvinylidene fluoride is used as an electrode binder, so that the prepared lithium ion battery negative electrode can effectively improve the capacity and cycling stability of the lithium ion battery.

The utility model relates to connector technical field especially, it is a kind of efficient conductive type booster plug socket assembly, including plug mechanism and socket mechanism, the female terminal of being equipped with with contact unit in socket mechanism is connected, the contact unit includes two contact plates of symmetrical distribution, and multiple openings are passed through and are set up on the contact plate, and then make multiple contact pins be formed on contact plate, the middle region of contact pin is suddenly curved to two contact plate center direction, the male terminal of welding is inserted between two contact plates. The design adopts the contact unit of special structure, increases the contact point and area with terminal, avoids instantaneous break, ensures that contact pressure is uniform and persistent, stably transmits after boosting large current, improves charging efficiency.

The present invention discloses an ultrasonic transducer structure and a handheld tooth cleaner, comprising a metal sheet, a piezoelectric ceramic chip and a connecting assembly for connecting to a tooth cleaning head, wherein the piezoelectric ceramic chip is arranged at one end of the metal sheet, and the other end of the metal sheet is connected to the connecting assembly, and the closer the metal sheet is to the connecting assembly in the direction from one end of the metal sheet to the other end of the metal sheet, the smaller the length of the metal sheet is. The present invention can improve the conduction efficiency of mechanical energy, and the metal sheet is a sheet metal structure, which can quickly conduct the heat generated by the piezoelectric ceramic chip, is conducive to heat dissipation, and has low cost.

The application discloses a kind of high adhesion hydrogel for electroencephalogram test and its preparation method and application, belong to biomedical engineering technical field.The hydrogel includes the following components crosslinked product: anionic monomer, cationic monomer, monomer and mutual penetration agent;The anionic monomer is any one of malic acid, gluconic acid, citric acid and lactic acid, cationic monomer is betaine or acetyl L-carnitine, monomer is N, N-dimethyl acrylamide, acrylic acid, sodium acrylate, 4-acryloyl morpholine or sodium acrylamidomethyl propane sulfonate, mutual penetration agent is sodium chloride aqueous solution or sodium chloride water-retaining agent solution.Preparation, cationic monomer is mixed and dissolved, vacuum drying, adding photo initiator mixing, then mutual penetration agent is added, and it is obtained by ultraviolet light crosslinking.The hydrogel of the application has high adhesion (adhesion strength reaches 203.22 kPa), high ion mobility and excellent biocompatibility, and the signal gain in EEG and ECG test reaches 2-3 times of traditional conductive paste, which can be widely used in medical conductive paste field.

The utility model discloses a lead-free environment-friendly copper alloy bar for a valve, which comprises a lead-free copper alloy bar body, a hollow hole is arranged at the center of the lead-free copper alloy bar body, a plurality of inclined planes are arranged on the surface of the lead-free copper alloy bar body at equal intervals, an anti-corrosion paint layer is arranged on the surface of the lead-free copper alloy bar body, and the anti-corrosion paint layer is arranged on the surface of the lead-free copper alloy bar body. The lead-free copper alloy bar has the advantages that through the arrangement of the hollow holes, the weight of the lead-free copper alloy bar body is reduced, meanwhile, enough strength is kept, meanwhile, resistance and thermal resistance are reduced, and the electric conduction efficiency and the heat conduction efficiency are improved; the copper alloy material is low in cost, low in cost and free of lead and chromium, meets international environmental protection standards, reduces potential hazards to the environment and human bodies, keeps high strength, high toughness and good machinability of a traditional copper alloy, and is suitable for manufacturing various valve parts.

The utility model relates to new energy transmission waste heat heat abstractor technical field discloses a new energy transmission waste heat heat abstractor, including bottom piece, the top of bottom piece is fixedly connected with the heat dissipation box, and the inner chamber top of heat dissipation box is fixedly connected with two symmetrical first spring, and the bottom of two first spring is commonly fixedly connected with a fixed disc, the bottom of fixed disc is fixedly connected with a plurality of heat pipes, through set up the cooperation of clamping plate and two -way threaded rod, make inverter can steady installation, and help first spring improves the adhesion of heat conduction sheet and inverter shell to strengthen heat conduction efficiency, simultaneously, through the air -suction fan and the air -blowing fan form the air duct, cooperate heat pipe and fin and realize efficient heat dissipation, in the heat dissipation process, utilize the rotary block to drive the bristle to carry out the flexible cleaning to the filter plate outer surface, avoid dust to block filter hole, guarantee the wind power to be unobstructed, further improve the heat dissipation effect and the overall stability of device.

The utility model discloses a mobile power supply with a heat dissipation function, and relates to the technical field of mobile power supplies. The mobile power supply with the heat dissipation function comprises a shell, a circuit board, a liquid cooling heat dissipation assembly and a battery cell, the shell is provided with a containing cavity, an air inlet and an air outlet. The air inlet and the air outlet are communicated with the accommodating cavity; the circuit board is arranged in the accommodating cavity; the liquid cooling heat dissipation assembly is arranged in the containing cavity. The cooling fan is located on one side of the air outlet. The cooling plate abuts against the circuit board. The battery cell is arranged in the containing cavity and electrically connected with the circuit board, the circulating pump and the cooling fan. Air can be blown to the air outlet through the cooling fan so that air in the containing cavity can be exhausted from the air outlet, high-temperature air in the containing cavity can flow out of the containing cavity so as to take away heat, external low-temperature air can enter the containing cavity from the air inlet, air circulation flowing is achieved, and the heat dissipation efficiency is improved. Therefore, the heat dissipation effect on the circuit board is achieved, and the charging and discharging efficiency and the use safety are ensured.

The invention relates to the technical field of electric heaters, in particular to an electric heating assembly and a heater. The electric heating assembly comprises a heating unit, a conductive unit and an insulating unit; the heating unit, the conductive unit and the insulating unit are sequentially arranged in a stacked mode in the thickness direction of the electric heating assembly. The conductive unit is connected with the heating unit; the insulating unit covers one side, deviating from the heating unit, of the conductive unit; each insulating unit comprises an insulating layer and two adhesive layers; the two adhesive layers are respectively coated on the two sides of the insulating layer in the thickness direction; one adhesive layer can be adhered to the conductive unit, and the other adhesive layer can be adhered to the heat transfer runner; the adhesive layer is configured to have thermal conductivity so as to transmit heat generated by the heating unit to the heat transfer runner through the conductive unit and the insulating unit in sequence. Therefore, the connection mode of the insulating layer can be simplified, and heat transfer efficiency is improved.

This invention discloses a lead-out terminal structure and a secondary battery, belonging to the field of secondary battery technology. It aims to solve the problems of complex manufacturing processes, poor welding reliability, insufficient sealing, uneven stress, and high internal resistance in existing secondary batteries. The lead-out terminal structure includes a battery casing and a lead-out terminal assembly disposed on its lead-out holes. The lead-out terminal assembly consists of an upper electrode post, a lower electrode post, an upper sealing gasket, a lower sealing gasket, and a positive current collector. The upper electrode post has a concave center forming a recessed portion, with a welding hole at the bottom of the recessed portion. The lower electrode post is a circular plate, fixedly connected to the bottom of the recessed portion. The upper and lower sealing gaskets are respectively disposed on the inner and outer sides of the battery casing, and are pressed together by matching sealing bevels to form a continuous sealing surface. The upper surface of the positive current collector has a protrusion and is welded to the lower electrode post. This invention simplifies the manufacturing process, reduces costs, improves welding stability, sealing, and stress uniformity. Even if defects such as weld spatter occur during the welding process, it does not affect the battery's sealing performance, reduces the battery's internal resistance, and is suitable for various types of secondary batteries.

The application discloses an electrowetting display device structure and a method for preparing the same. The electrowetting display device structure comprises a first substrate, a second substrate, a sealing frame and a pixel wall. The second substrate is arranged in parallel with the first substrate, and has a first conductive layer on one side close to the first substrate. A hydrophobic insulating layer is arranged on the first conductive layer. The sealing frame is arranged between the first substrate and the second substrate, and a sealed cavity is formed between the first substrate, the sealing frame and the second substrate. The sealed cavity is filled with a polar liquid. The pixel wall is arranged on the hydrophobic insulating layer in the sealed cavity, and defines a pixel grid. The pixel grid is filled with a non-polar liquid which is immiscible with the polar liquid. The pixel wall comprises a second conductive layer, and the second conductive layer and the first conductive layer form a positive electrode and a negative electrode, respectively. The electrowetting display device structure can improve the response time and the conductive efficiency of the electrowetting display device.

The invention belongs to the field of functional composite material preparation, and particularly relates to a method for preparing an expanded graphite / silver composite material through microwave expansion, and the method comprises the following steps: soaking graphite in an acid solution for oxidation treatment and heating, and then cleaning the graphite with deionized water until the solution is neutral to obtain graphite subjected to acid treatment; the preparation method comprises the following steps: mixing graphite subjected to acid treatment with an AgNO3 solution, uniformly stirring, then carrying out ultrasonic treatment, enabling the graphite to be uniformly infiltrated by the AgNO3 solution, carrying out freeze drying treatment on the mixture, baking the treated material under an infrared lamp, carrying out microwave expansion treatment on the baked mixture, cooling a product subjected to microwave expansion treatment, and carrying out tubular furnace pyrolysis, thereby obtaining the AgNO3 / AgNO3 composite material. And cooling to obtain the expanded graphite / silver composite material. The product obtained by the method disclosed by the invention has relatively high specific surface area and excellent conductivity.