25results about How to "Improve electrical contact performance" patented technology

The invention discloses a nanometer silicon filled microcrystalline graphite negative electrode material and a preparation method and application thereof. The preparation method of the nano-silicon filled microcrystalline graphite negative electrode material comprises the following steps: by taking microcrystalline graphite as a base material, depositing silane between sheet layers of the microcrystalline graphite by adopting a gradient heating method to obtain a nano-silicon filled microcrystalline graphite composite material; and finally, forming the nano-silicon filled microcrystalline graphite negative electrode material with a porous structure on the surface of the nano-silicon filled microcrystalline graphite composite material through carbon source coating carbonization. According to the nano-silicon-filled microcrystalline graphite negative electrode material with the core-shell structure provided by the invention, an inner core is a silicon-graphite composite material formed by nano-silicon-filled microcrystalline graphite, nano-silicon particles are filled in the surfaces and gaps of crystalline grains of the microcrystalline graphite, volume expansion of the nano-silicon in the charging and discharging process is inhibited by a microcrystalline graphite matrix material, and particularly, the volume expansion of the nano-silicon in the charging and discharging process is inhibited by the microcrystalline graphite matrix material. And due to different structural orientations of the microcrystalline graphite, the stress effect can be counteracted, and the volume expansion of the material is further inhibited.

The invention relates to a solar cell and a preparation method thereof. The solar cell comprises a semiconductor substrate, wherein the semiconductor substrate is provided with a first surface and a second surface which are oppositely arranged; a hole transport layer and an electron transport layer, the hole transport layer and the electron transport layer are arranged on the first surface at an interval, the material of the hole transport layer comprises vanadium oxide, and the material of the electron transport layer comprises titanium oxide; the first passivation layer is located on the surface, away from the semiconductor substrate, of the hole transport layer; and the second passivation layer covers the surface, far away from the semiconductor substrate, of the first passivation layer, the surface, far away from the semiconductor substrate, of the electron transport layer and the first surface. According to the solar cell, a good electric contact effect between the electrode and the semiconductor region can be achieved, and therefore the high photoelectric conversion efficiency of the IBC solar cell is achieved.

The utility model discloses a rotary plug structure and a converter. The rotary plug structure comprises a shell, pins, a rotary seat, a sliding contact piece, an elastic component and a fixed seat. The rotating seat is rotatably arranged on the shell, the plug pin is arranged on the rotating seat, the sliding contact piece corresponds to the contact end of the plug pin, and the elastic component is always in a compressed state, so that the sliding contact piece can be pushed to be in close contact with the contact end of the plug pin, and normal and stable current transmission can still be kept in the rotating process of the sliding contact piece and the contact end; and the electric contact effect is good, the stability of electric connection is effectively ensured, so that the situation of generating electric sparks is reduced, and the use safety is high. In order to reduce the occupied space, the pins can be designed to be of a turnover structure, and storage is convenient. The converter provided by the utility model comprises the rotary plug structure, so that the plug of the converter has a rotating function, the rotating direction can be adjusted, the converter has stronger adaptability and convenience, and wide popularization and application are facilitated.

The invention discloses a SiOX / microcrystalline graphite negative electrode material and a preparation method and application thereof. Relates to the technical field of lithium battery cathode materials. The preparation method comprises the following steps: by taking microcrystalline graphite as a base material, growing nano silicon oxide particles in situ on the surface of the microcrystalline graphite and in gaps of sheet layers by adopting a hydrothermal reaction method to form a SiOX / microcrystalline graphite composite material, and coating the surface of the SiOX / microcrystalline graphite composite material with a carbon coating layer with a complete carbon layer structure, and finally, the SiOX / microcrystalline graphite negative electrode material with the core-shell structure is formed. By adopting the technical scheme, the stress effect caused by silicon volume expansion in the charging and discharging process is counteracted and inhibited by utilizing the disordered layer structure characteristic that the structure orientation of fine scales of the microcrystalline graphite is different; meanwhile, the nano SiOX particles are filled in the gaps of the microcrystalline graphite flake layer, and the fine flake graphite constructs a three-dimensional conductive network structure, so that the problem of poor conductivity of the SiOX particles is solved.

The invention discloses a high-voltage cable buffer water-blocking tape for preventing electric ablation, and relates to the field of high-voltage cable structures. The water-blocking fabric comprises a first fluffy cotton layer, a first filter cotton layer, a non-woven fabric layer, a water-blocking powder layer, a second non-woven fabric layer, a second filter cotton layer and a second fluffy cotton layer which are sequentially arranged from top to bottom, the first fluffy cotton layer and the second fluffy cotton layer are the same in structure, and copper films and tin-plated aluminum films are arranged on the inner sides and the outer sides of the first fluffy cotton layer and the second fluffy cotton layer. According to the invention, better water-blocking performance can be ensured, and electric ablation can be obviously prevented at the same time.

The invention discloses a high heat dissipation type direct current permanent magnet synchronous servo motor and a using method, and relates to the technical field of motors, the high heat dissipation type direct current permanent magnet synchronous servo motor comprises a center shaft and a stator, a rotor is arranged in the middle of the outer surface of the center shaft, the stator sleeves the rotor, and a sealing cover is arranged on one side of the outer surface of the center shaft. As the temperature of the electric brush assembly rises, the thermal expansion coefficient of the material can cause slight deformation or position adjustment of the electric brush, and the change can help maintain good contact pressure between the electric brush and the commutation copper sheet, so that contact resistance increase caused by temperature rise is reduced; graphite powder generated by abrasion of an electric brush can form a layer of conductive film on the surface of the commutation copper sheet, although the graphite is a conductor, if the graphite is not uniformly distributed, poor local contact is caused, and proper temperature control and design can ensure that the graphite layer is more uniformly distributed on the commutation copper sheet, and on the contrary, the electric contact quality can be improved.

The invention discloses a SiO X / Microcrystalline graphite negative electrode material and its preparation method and application; relates to the technical field of lithium battery negative electrode materials. The preparation method comprises using microcrystalline graphite as a matrix material, using a hydrothermal reaction method to in-situ grow nano silicon oxide particles on the surface of microcrystalline graphite and in the gaps between the sheets to form SiO X / microcrystalline graphite composites, and in the SiO X The surface of the microcrystalline graphite composite material is coated with a carbon coating layer with a complete carbon layer structure, and finally a SiO X / Microcrystalline graphite negative electrode material. The technical solution of the present invention uses the structure of microcrystalline graphite flakes with different structural orientations to offset and suppress the stress caused by silicon volume expansion during the charging and discharging process; at the same time, nano-SiO X The particles are filled in the gaps of the microcrystalline graphite flake layers, and the fine flake graphite builds a three-dimensional conductive network structure, improving the SiO X The problem of poor electrical conductivity of particles.

The electronic atomizer convenient to disassemble comprises an oil cup assembly, a power supply unit and an atomizing core arranged in the oil cup assembly, and a connecting piece is arranged between the oil cup assembly and the power supply unit so that the oil cup assembly can be detachably connected with the power supply unit; one end of the connecting piece is inserted into the power supply unit, and the other end of the connecting piece is inserted into the oil cup assembly. The oil cup assembly and the power supply unit are connected through the connecting piece, one end of the oil cup assembly is detachably connected with the oil cup assembly, the other end of the oil cup assembly is detachably connected with the power supply unit, and the oil cup assembly and the power supply unit are electrically connected and conveyed through the connecting piece. According to the utility model, the detachable connection is convenient to disassemble and assemble, so that parts can be classified and recycled conveniently; and during assembly, the connection effect is good, the air tightness is ensured, and the electric contact is good.

The invention discloses a positive electrode material and a preparation method thereof, a positive plate, an electrochemical device and electronic equipment, the positive electrode material comprises a positive electrode active material and a metal element-containing material, and the metal element-containing material comprises a metal oxide and / or a nano metal simple substance; at least part of the metal element-containing substance is attached to the surface of the positive electrode active substance, and at least part of the metal element-containing substance attached to the surface of the positive electrode active substance is rod-shaped. The positive electrode material has excellent conductivity, and has excellent rate capability when being applied to a battery.

The utility model relates to the technical field of connectors, and provides a conductive terminal, an electric connector with the conductive terminal and a mobile terminal. The conductive terminal comprises a metal substrate and a plating layer structure, the metal substrate comprises a contact area located at the front end, and the plating layer structure comprises a bottom plating layer, a first plating layer, a second plating layer, a third plating layer and a fourth plating layer, the first plating layer is a platinum plating layer or a platinum alloy plating layer, the second plating layer is a palladium plating layer or a palladium alloy plating layer, the third plating layer is a platinum plating layer or a platinum alloy plating layer, the fourth plating layer is a gold plating layer, and the first plating layer is only arranged on the bottom plating layer of the contact area or arranged on the whole bottom plating layer; the second plating layer completely covers the first plating layer; and the third plating layer and the fourth plating layer are only arranged in the contact area. The wear resistance and the corrosion resistance of the terminal are improved, the service life is prolonged, the electric contact performance of the terminal is improved, abnormity caused by poor contact is prevented, and the user experience is good.

The application discloses a kind of FPC temperature acquisition structures, including the temperature acquisition component of connecting aluminum-based FPC, temperature acquisition component includes integrally injection-molded temperature acquisition shell and conductor structure, temperature acquisition shell includes temperature acquisition part with temperature sensor and positioning part with connecting window, conductor structure is formed by copper material connecting piece and aluminum material connecting piece composite Copper material connecting piece is extended to temperature acquisition part and connected with temperature sensor, and aluminum material connecting piece is welded with aluminum-based FPC at connecting window position, the combination of same metal is better, welding strength is high and contact area is large, improve electrical contact performance, so that temperature information collected by temperature sensor can be reliably transmitted to FPC product, this conductor structure is designed using copper-aluminum composite structure, with high bonding strength, excellent conductivity and thermal conductivity, easy to weld, low contact resistance characteristics, can meet the welding requirements of conductor structure and aluminum-based FPC, also can reduce production cost, improve product performance.

The invention belongs to the technical field of fuel cells, and particularly relates to a metal bipolar plate protective coating as well as a preparation method and application thereof. The zirconium or zirconium alloy bonding layer provided by the invention and the metal bipolar plate can form a strong bonding interface, and the interface is subjected to chemical reaction in the working environment of the fuel cell to form zirconium oxide, so that the self-corrosion potential of the coating is improved, and the coating is endowed with excellent corrosion resistance. Besides, zirconium or zirconium alloy is used as the bonding layer, so that the surface roughness of the protective coating can be reduced, the actual contact area of the protective coating is larger, and the electric contact performance is better. The protective coating interface of the metal bipolar plate provided by the invention has high binding force and excellent chemical inertness, the coating contains a CrN and Cr2N two-phase structure, the corrosion resistance of CrN is exerted, the conductivity is enhanced through the Cr2N phase, and high-reliability and long-life protection is provided for the metal bipolar plate of the fuel cell.

The invention belongs to the technical field of cable processing, and discloses cable crimping equipment for urban rail construction, and the crimping equipment comprises a crimping module which comprises a crimping base, and the crimping base is provided with a crimping male die and a crimping female die; the crimping sheet is placed on the crimping female die, the crimping sheet is bent by the crimping male die and the crimping female die, the crimping female die comprises a crimping platform and crimping side tables, the crimping side tables are arranged on the two sides of the crimping platform, side pressing mechanisms are arranged at the top ends of the crimping side tables, and the crimping male die and the crimping female die are arranged on the crimping platform. The side pressing mechanism comprises a side pressing piece; after the crimping sheet is bent, a conductor of a cable is placed on the placement groove, and the side pressing piece moves towards the crimping platform, so that the crimping sheet is bent again to complete crimping of the cable. And through secondary bending of the side pressing mechanism, the cable conductor is wrapped by the crimping sheet more tightly, and the mechanical strength and the electrical contact performance of the crimping point are enhanced.

The invention discloses a solar cell, a manufacturing method thereof and a display device. The solar cell includes: a transparent substrate; the transparent front electrode is arranged on the surface of the transparent substrate; the photovoltaic layer is arranged on the surface of the transparent front electrode; the metal protection layer is arranged on the surface of the photovoltaic layer; the back electrode is arranged on the surface of the metal protection layer; and the packaging layer is arranged on one side, far away from the metal protection layer, of the back electrode. Wherein the metal protection layer comprises one or more of Ag, Al, Cr, Cu, Au, Pt, Mo, Ti, Sn and Mg. A metal protection layer is arranged on the surface of a photovoltaic layer and serves as a mask for performing a patterning process on the photovoltaic layer, so that the patterning of the photovoltaic layer is realized. And on the other hand, the metal protection layer is adopted as a mask and does not need to be removed after patterning of the photovoltaic layer, and on the contrary, the electric contact performance between the back electrode and the photovoltaic layer can be improved.

The application provides a solar cell and a photovoltaic module, and belongs to the technical field of semiconductors. The solar cell comprises a silicon substrate, wherein the surface of the silicon substrate comprises: a plurality of first recessed regions, each extending into a strip shape along a first direction and being spaced apart along a second direction intersecting the first direction; and a plurality of first protruding regions, the first protruding regions being adjacent to the first recessed regions. The first recessed regions and the first protruding regions of the surface of the silicon substrate form a first texture structure, while ensuring light trapping effect, due to the lack of corner structures of a traditional tower base structure, the film layer is more uniformly deposited on the silicon substrate, and the quality of the deposited film layer is improved.

The utility model discloses a contact structure, an electric appliance element, a battery power distribution unit, a battery pack and an electric device, and relates to the field of electric appliance accessories. The contact structure comprises a cap body and a contact column, the cap body is provided with a first threaded connection part and a plugging part, and the plugging part is used for being connected with a busbar in a plugging manner; two opposite ends of the contact column are respectively a second threaded connection part and a static contact surface, and the static contact surface is used for being in contact conduction with a movable contact of an electrical apparatus element; wherein one of the first threaded connection part and the second threaded connection part is a threaded hole, and the other one is a stud matched in the threaded hole. The contact structure provided by the embodiment of the utility model is good in internal contact and high in binding force, and is helpful for improving the reliability and safety of an electrical system.

The invention discloses a connector terminal, a terminal assembly, a connector and a connector assembly. The connector terminal includes: an outer conductor including a cylindrical body; an insulator disposed in the outer conductor; and an inner conductor disposed in the insulator. The barrel-shaped main body is provided with a front end and a rear end which are axially opposite to each other, and a plurality of axially extending separation seams are formed in the front end part of the barrel-shaped main body so as to separate the front end part of the barrel-shaped main body into a plurality of main elastic arms; an auxiliary elastic arm is formed on the main elastic arm, and the main elastic arm and the auxiliary elastic arm are suitable for being electrically contacted with a mating terminal of a mating connector inserted into the outer conductor at the same time. Therefore, the electrical contact performance and the electromagnetic compatibility between the connector terminal and the matching terminal are improved.

An integrated assembly comprises a first coil assembly and a circuit board, the integrated assembly comprises a box body, the box body is provided with a containing cavity, at least part of the first coil assembly is located in the containing cavity, the first coil assembly comprises a first connector, and the first connector comprises a first conductive part and a first base. The integrated assembly comprises a first elastic piece, the box body is provided with a first abutting portion, the first elastic piece is located between the first abutting portion and the first base, one end of the first elastic piece abuts against or is fixed to the first abutting portion, and the other end of the first elastic piece abuts against or is fixed to the first base. The first conductive part is opposite to the first elastic part and protrudes out of the first base, the circuit board is provided with a first contact, and the first conductive part abuts against the side, facing the first base, of the first contact. The electric contact performance of the first conductive part and the first contact is improved under the action of the first elastic piece.

The invention relates to meteorological instruments and microelectronic technologies, in particular to a platinum resistor chip for high-altitude temperature observation and an FIB punching process, the platinum resistor chip comprises a rectangular base and a platinum resistance wire, and the rectangular base is of a horizontal frame structure; the platinum resistance wire is installed on the rectangular base, and continuous holes are formed in the part, located on the hollowed-out area, of the platinum resistance wire in the length direction of the platinum resistance wire; the holes in the platinum resistance wire in the hollow area are divided into a middle area and auxiliary areas at the two ends of the middle area; the hole spacing of the middle area is smaller than that of the auxiliary area; and two ends of the platinum resistance wire are leads. The mass of the platinum resistance wire is reduced, the ventilation quantity is increased, so that the platinum resistance wire cannot be damaged due to excessive wind power, meanwhile, the cross sectional area of current is reduced, the resistance value of the platinum resistor is increased, and the temperature influence caused by different materials between the platinum resistor and a bonding pad or a wire except for solar radiation is greatly reduced; therefore, the measurement of the high-altitude environment temperature is more accurate, and the response rate is higher.

The application discloses a positive electrode material, a preparation method of the positive electrode material, a positive electrode sheet, an electrochemical device and electronic equipment, and the positive electrode material comprises a positive electrode active material and a metal element-containing substance, the metal element-containing substance comprises a metal oxide and / or a nano metal element; and the metal element-containing substance is at least partially attached to the surface of the positive electrode active material, wherein the metal element-containing substance attached to the surface of the positive electrode active material is at least partially in a rod shape. The positive electrode material has excellent electrical conductivity, and when the positive electrode material is applied to a battery, the battery has excellent rate performance.

The utility model discloses a 360-degree conducting connector, which comprises a rotating shaft, rings, connecting elastic sheets and a circuit substrate, the plurality of rings are sleeved on the rotating shaft at intervals, axial end pins extending along the axis direction of the rotating shaft are integrally formed on the rings, the axial end pins on the rings are arranged in an insulating manner, the plurality of connecting elastic sheets are arranged on the circuit substrate, and the connecting elastic sheets are arranged on the circuit substrate. The two ends of the connecting elastic piece are symmetrically bent upwards to form two arc-shaped clamping parts matched with the shape of the circular ring. According to the utility model, the structure is reasonable, the connecting elastic sheet is provided with the two arc-shaped clamping parts, the matching effect with the shape of a circular ring is good, the connecting elastic sheet can be tightly clamped on the circular ring, the electric contact effect is good, normal and stable current transmission can be still maintained in the 360-degree rotation process, the stability of electric connection is effectively ensured, the reliability is high, and the service life is long; and the whole structure is simple, the implementation is easy, the wide popularization and application are facilitated, and the device is particularly suitable for hair driers, hair scissors, hair curlers, hair straighteners and other electric appliances.

The invention discloses an intelligent adjusting connector for a conductive slip ring, which relates to the technical field of high-power slip rings and comprises an insulating mounting plate, a conductive copper bar, an electric brush positioning strip, a fiber electric brush and a fish scale elastic sheet. The plug-type electric connector is connected with the rotor ring sheet through a C-type electric contact structure, and rotary electric transmission of the slip ring is realized through sliding electric contact between the plug-type electric connector and the rotor ring sheet; the plug-type electric connector can be installed by adopting a guide pin, so that the plug-type electric connector can be axially displaced, and errors generated in the processing or assembling process of the rotor ring sheet are reduced; according to the plug-type connector, the elastic fixed electric brush and the elastic fish scale are adopted, so that the contact stability between the connector and the rotor ring sheet is ensured, and the problem of arc discharge caused by poor contact is effectively solved; the high-power slip ring self-adaptive displacement compensation plug-type connector provided by the invention has the advantages that the processing precision of the rotor ring sheet is reduced, the transmission power is high, the contact stability is high, the service life is long, and the like.

This invention discloses a solar cell and its fabrication method, components, and system. The solar cell includes a silicon substrate, a doped layer and a passivation layer sequentially stacked on the back side of the silicon substrate. The passivation layer has electrode trenches that locally expose the doped layer, and the electrode trenches are provided with a back electrode. The back electrode includes a seed metal silicide layer, a seed metal oxide thin layer, a mixed conductive layer, and an outer metal layer sequentially stacked on the back side of the locally exposed doped layer. The seed metal silicide layer is one or more layers selected from molybdenum silicide, nickel silicide, and titanium silicide layers; the seed metal oxide thin layer is one or more layers selected from molybdenum oxide, nickel oxide, and titanium oxide thin layers; and the thickness of the seed metal oxide thin layer is no greater than 20 nm. This solar cell has a novel electrode structure, which can promote improvements in electrode structure and performance, and reduce costs. The novel electrode structure of this solar cell exhibits good current transport performance and low metal recombination loss.

The utility model discloses a button switch convenient to assemble, relates to the field of switches, and solves the problem of difficult assembly. A cap cylinder and a movable contact piece are installed below the rotor, the movable contact piece is made of an elastic metal material, the movable contact piece is fixedly connected with the cap cylinder, the jacking spring is installed between the cap cylinder and the base, the cap cylinder abuts against the interior of the rotor, and the rotor can float up and down to drive the movable contact piece to make elastic contact with the static contact piece when the state of the rotor is switched. The movable contact piece and the cap cylinder are integrated into a single assembly, elements of an original pressure spring are reduced, and the elastic performance of the movable contact piece is utilized, so that the number of parts is effectively reduced, the assembly steps are simplified, and the production cost and the assembly complexity are reduced; the movable contact piece is made of an elastic metal material, and the design that the movable contact piece is fixedly connected with the cap cylinder ensures that tight and reliable contact pressure can be realized between the movable contact piece and the static contact piece when the rotor floats up and down, so that good electric contact performance can still be kept even after long-term use and repeated pressing, and the service life of the switch is prolonged.

The utility model provides an RCA seat with an improved structure, which comprises one or more tubular conductive shaft sleeves, the top end of each conductive shaft sleeve is provided with a necking part, the bottom end of each conductive shaft sleeve is riveted and fixed on a grounding shell, the grounding shell is provided with a first conductive terminal, an insulating inner tube is concentrically sleeved in each conductive shaft sleeve, the bottom end of each insulating inner tube is integrally formed on an insulating seat, and the insulating seat is provided with a second conductive terminal. A central hole of each insulating inner tube axially penetrates through the insulating seat, an axial insertion groove is formed in the inner wall of each insulating inner tube upwards from the bottom end, a conductive elastic piece extending in the axial direction is installed in each insertion groove in an inserted mode, and each conductive elastic piece is provided with a contact part protruding out of the inner wall of the corresponding insulating inner tube in the radial direction. A second conductive terminal which is embedded on the insulating seat and extends outwards is integrally formed at the bottom end of each conductive elastic sheet; and a cover plate for limiting the second conductive terminal from loosening downwards is also fixed on the bottom surface of the insulating seat. The internal structures of the conductive shaft sleeve of the RCA seat are not loosened, the assembly is simple, the production cost is reduced, and the product stability is enhanced.