132results about How to "Good electrical contact" patented technology

The invention relates to the technical field of steel shot production, and discloses aviation steel shot production equipment and a production process thereof.The production equipment comprises a packaging bag and a polishing machine, a discharging hopper is arranged on the side of the polishing machine, a base is connected to the side of the polishing machine, and a rotary table used for containing the packaging bag is rotationally arranged on the upper side of the base; a supporting ring used for fixing a bag opening of a packaging bag is arranged on the upper side of the rotary table, a pressing plate intermittently abutting against the supporting ring is arranged on the upper side of the rotary table, an opening and closing mechanism used for controlling opening and closing is arranged on the inner side of the discharging hopper, and a conveying belt is arranged on the side portion of the rotary table. A push plate is movably arranged on the upper side of the rotary table and used for pushing the packaging bags to the conveying belt. A packaging bag is fixed to the supporting ring through the pressing plate, the rotary table drives the packaging bag to move to the position below the discharging hopper to be filled with aviation steel shots, then the packaging bag is pushed to the conveying belt through the push plate, and therefore the production efficiency is improved.

The invention relates to the technical field of secondary batteries, in particular to a composite material and a preparation method thereof, a negative electrode current collector, a metal battery and an electric device. The composite material provided by the invention comprises an MXene material, and the MXene material comprises a surface functional group; the silver nanoparticles are grown on the surface of the sheet layer of the MXene material in situ; the modified bacterial cellulose comprises bacterial cellulose and oxygen-containing functional groups modified on the surface of the bacterial cellulose; the modified bacterial cellulose is loaded on the surface of the MXene material; wherein the loading mode of the modified bacterial cellulose at least comprises intermolecular interaction between an oxygen-containing functional group of the modified bacterial cellulose and a surface functional group of the MXene material. The composite material provided by the invention has excellent lithium-loving performance, and can delay the formation of lithium dendrites, so that the electrochemical performance of the metal battery can be improved.

The invention discloses a wide-band-gap perovskite solar cell and a preparation method thereof, and belongs to the technical field of new energy, the method comprises the following steps: 1) spin-coating a NiOx solution on a pretreated substrate, and drying to obtain a NiOx hole transport layer; 2) mixing FAI, CsI, PbBr2 and PbI2, dissolving the mixture in a mixed solution of DMF and DMSO, and then adding 4, 5-dicyanoimidazole to obtain a perovskite precursor solution; the NiOx hole transport layer obtained in the step 1) is coated with a perovskite precursor solution through a two-step spin-coating method, and a perovskite layer is obtained after annealing treatment; and 3) successively preparing an electron transport layer and an electrode layer to obtain the wide-band-gap perovskite solar cell. By providing a 4, 5-dicyanoimidazole additive strategy, the strong coordination effect between 4, 5-dicyanoimidazole and iodide ions effectively inhibits the precipitation of iodine, thereby significantly improving the stability of the wide-band-gap solar cell.

The invention discloses a universal connector and an automatic monitoring and positioning method, the universal connector comprises a shell, a conductive part, a locking assembly, a blocking assembly and a GPS positioner, an accommodating space is formed in the shell, two through wire holes are formed in the surface of the shell, and two openings are formed in the side surface of the shell; the conductive piece is arranged in the accommodating space and comprises a first wire fixing part and a second wire fixing part which are arranged diagonally; the locking assembly is installed on the shell, the locking assembly can move between a locking position and an unlocking position, and when the locking assembly is located at the locking position, the locking assembly can abut against the wire core so as to lock the wire core; the blocking assembly is installed on the side face of the shell and can move between a first position and a second position. And the GPS positioner is arranged in the shell. The cable clamping device can adapt to clamping connection of cables of different sizes, when a fault occurs, accurate positioning can be carried out for detection maintenance or replacement, and the maintenance efficiency is improved.

The nursing assembly comprises a nursing bin body and at least one inner bin, the nursing bin body is provided with at least one bin groove, the inner bin is contained in the bin groove and divides the bin groove into a nursing bin and an auxiliary bin, the interior of the inner bin or a bin body surrounded by the interior of the inner bin and the bottom of the bin groove is the nursing bin, and the auxiliary bin is arranged in the nursing bin. A bin body defined by the bin groove and the inner bin is an auxiliary bin, at least one first electrode and at least one second electrode are arranged in the nursing bin, and at least one third electrode is arranged in the auxiliary bin; a through hole is formed in the side wall of the inner bin, a cation exchange membrane is arranged on the through hole in a sealed mode, and solutions in the nursing bin and the auxiliary bin are electrically communicated only through the cation exchange membrane. The utility model has the advantages of ingenious design, convenience in assembly, firmness and durability, inner and outer sleeve connection, convenience for arranging sealing surfaces on the same plane, and convenience for assembling the cation exchange membrane on the inner bin.

The utility model belongs to the field of electronic equipment, and provides an elastic needle, a liquid discharge assembly and an earphone charging box, the elastic needle comprises a needle tube, a needle head and an elastic piece, the needle tube is internally provided with an accommodating cavity, two opposite ends of the needle tube are respectively a first end and a second end, the first end is provided with a first through hole communicated with the accommodating cavity, and the second end is provided with a second through hole communicated with the accommodating cavity; the second end is further provided with an inclined face facing the containing cavity. The needle head movably penetrates through the accommodating cavity through the first through hole; the elastic piece is arranged in the containing cavity. The liquid discharging assembly comprises an elastic needle and absorbent cotton. The earphone charging box comprises a liquid discharge assembly. According to the vibrating needle, the second through hole communicated with the containing cavity is formed in the second end, when external liquid flows to the bottom in the containing cavity from the first through hole along the side wall of the needle head, the liquid can flow downwards along the inclined face and is finally discharged out of the second through hole, and crystal particles of the liquid are effectively prevented from being accumulated on the inner wall of the needle tube; the problem that liquid forms crystals in the needle tube, and consequently the vibrating needle loses efficacy is solved.

The invention belongs to the field of laser wireless energy transmission. The invention provides a laser battery array chip and a manufacturing method and application thereof, the chip comprises a battery array formed by serially connected sub-batteries, each sub-battery comprises an electrode extension part and an electrode connection part which extend from a metal electrode layer, and the electrode extension parts and the electrode connection parts are electrically connected with buffer layers of adjacent sub-batteries, so that serial connection is realized; the sub-cell further comprises a first insulating passivation layer for isolating the metal electrode from the energy conversion layer and isolating the adjacent sub-cell. The design greatly improves the laser energy output efficiency and conversion efficiency per unit area. The laser energy conversion battery array chip designed by adopting a chip process has extremely high output energy density and smaller volume and weight, so that the laser energy conversion battery array chip is more suitable for being applied to the fields of wireless charging of unmanned aerial vehicles in the future and the like.

This invention relates to the field of shock waveguide technology and discloses a spring electrode shock waveguide, comprising a slender carrier and a balloon. The space formed between the balloon and the carrier is an annular channel for fluid to enter and achieve inflation. First, the electrode in the guide tube is designed as a spring-type spiral structure and wound around the surface of the carrier, which can provide good electrical contact and make the electrode have excellent ductility, solving the problem of large stress on the electrode during the deformation of the balloon under fluid compression. Through the design of a first support mechanism and a second support mechanism, the first support mechanism is connected between two adjacent outer walls of the electrode, providing axial support force for the electrode, and the second support mechanism is connected between the inner wall of the balloon and the outer wall of the electrode, providing radial support force for the electrode. This reduces the pressure on the electrode when the internal pressure of the balloon increases and the balloon expands, further solving the stress problem of the electrode during the deformation of the balloon.

The invention discloses a spring stretching correction device and correction method, and belongs to the technical field of spring correction. A spring stretching correction device comprises a working box with a cavity, the interior of the cavity of the working box is divided into a containing cavity, a working cavity and a cleaning cavity from top to bottom through partition plates, the spring stretching correction device further comprises a fixed traction hook fixedly connected to the side wall of the working cavity, and series circuit mechanisms are arranged on a movable traction hook and the fixed traction hook respectively. The knocking end of the reciprocating knocking mechanism is arranged below the traction end of the traction hook, and the reciprocating knocking mechanism is matched with the air injection plate; according to the invention, springs at two ends can be self-heated, the phenomenon of thermal stress concentration of the springs can be reduced, and local overheating or cooling of the springs can be prevented, so that cracks are prevented from being generated outside the springs, the subsequent service life of the springs is prolonged, ferric oxide formed on the surfaces of the springs can be removed, and good electric contact and heat conduction are ensured; the influence of oxides on spring performance is reduced, and the subsequent service life of the spring is prolonged.

A display device includes: a substrate including an emission area and a non-emission area; a via layer disposed on the substrate and including a recess toward the substrate; a pixel defining layer overlapping the non-emission region and disposed on the via layer; a first bank layer disposed on the pixel defining layer and defining a first opening; a second bank layer disposed on the first bank layer and including a tip protruding from a side surface of the first bank layer toward the first opening; a first pixel electrode overlapping the recessed portion of the via layer and disposed on the substrate; a first emission layer disposed in the first opening on the first pixel electrode; and a first common electrode disposed in the first opening, on the first emission layer, and in contact with the first bank layer. The side surface of the first bank layer and the tip of the second bank layer overlap the recess of the via layer.

The utility model discloses a water meter PCB board detection jig, including test base, locating platform deck and pressure mechanism, locating platform deck floatably installs on the test base, locating platform deck top is equipped with first locating slot, second locating slot and pressing piece, first locating slot is located just above the detection probe and is used for placing main substrate, second locating slot is located just above the detection probe and is used for placing the main substrate. An avoiding hole communicated with the first positioning groove is formed in the position, corresponding to the detection probe, of the bottom of the positioning platform deck, the pressure mechanism is installed on the testing base and located over the first positioning groove, and the pressure mechanism is used for tightly pressing the main substrate placed in the first positioning groove so that the main substrate can make contact with the detection probe; the second positioning groove is used for placing an auxiliary substrate, and the abutting piece is rotatably installed on the positioning carrying table and used for tightly pressing the auxiliary substrate; the second positioning groove and the abutting piece are used for fixing the auxiliary substrate, interference of the auxiliary substrate on the main substrate in the detection process is prevented, the detection accuracy and reliability are improved, and powerful technical support is provided for quality control in the water meter production process.

This application discloses a semiconductor device and an integrated circuit. The semiconductor device includes an N-type semiconductor substrate, a drift layer, a semiconductor layer, a first trench located in the semiconductor layer, a gate located in the first trench, a P-well, a source region, and an N-type second semiconductor region that are located in the semiconductor layer, a source, and a drain. The drift layer includes an N-type column region and a P-type column region that are disposed in parallel and alternately. In the semiconductor device, an electrode is further disposed below the gate, a P-type first semiconductor region is disposed at the bottom of the first trench, the first semiconductor region is in contact with the electrode and the P-type column region located below the gate, and the electrode is electrically connected to the source. In this way, the P-type column region located below the gate may be connected to the source through the electrode, and good electrical contact is implemented between the electrode and the first semiconductor region, thereby implementing a grounding function.

The invention provides a display panel and a display device.The display panel comprises a substrate, a first electrode layer, a pixel definition layer, an isolation structure, a light-emitting layer and a second electrode layer, the isolation structure is arranged in a non-opening area of the pixel definition layer, the light-emitting layer is arranged on the pixel definition layer and covers the isolation structure, and the second electrode layer is arranged on the substrate. The second electrode layer is arranged on the side, away from the pixel definition layer, of the light-emitting layer; the second electrode layer is continuously arranged at the isolation structure, the isolation structure comprises the first isolation part and the second isolation part which are separately arranged, the light-emitting layer is continuously arranged at the position where the first isolation part is located, and the light-emitting layer is disconnected at the position where the second isolation part is located, so that the poor display caused by secret brightness of pixels is effectively improved; meanwhile, it can be guaranteed that the second electrode layer and the light-emitting layer are in good electric contact at the first isolation part, normal transmission of signals is guaranteed, impedance of the second electrode layer is effectively reduced, and power consumption of the display panel is reduced.

The present application relates to a negative electrode material and its preparation method and application. The negative electrode material of the present application comprises a core layer and a shell layer; the shell layer covers the core layer; the material of the core layer comprises silicon material, carbon nanotubes and carbon-coated tin nanowires, and the carbon-coated tin nanowires and carbon nanotubes are attached to the surface of the silicon material; the material of the shell layer comprises graphene. The negative electrode material of the present application can make the battery have both high specific capacity and cycle stability.

The invention relates to a solar cell and a preparation method thereof, and the method comprises the following steps: providing a semiconductor substrate, and forming a doping structure on the lower surface of the semiconductor substrate, the doping structure comprises a tunneling layer, an intrinsic layer, a first doping structure, a second doping structure and an isolation structure, wherein the tunneling layer and the intrinsic layer are stacked in sequence; the first doping structure and the second doping structure are located in the intrinsic layer and have opposite conduction types; forming passivation anti-reflection material layers on the upper surface of the semiconductor substrate and the lower surface of the doping structure respectively; removing the passivation anti-reflection material layer on the lower surfaces of the first doping structure and the second doping structure to form a passivation anti-reflection layer comprising a first passivation anti-reflection layer and a second passivation anti-reflection layer which are respectively arranged on the lower surface of the isolation structure and the upper surface of the semiconductor substrate; forming a first conductive part and a second conductive part which at least cover the lower surface of the first doping structure and the lower surface of the second doping structure, wherein one ends, close to the isolation structure, of the first conductive part and the second conductive part are arranged at intervals. According to the solar cell and the preparation method thereof, parasitic absorption of the solar cell is greatly improved.

The invention relates to the field of circuit breaker maintenance, and provides an automatic wiring tool for a circuit breaker. The circuit breaker automatic wiring tool comprises a rack, a first wiring device and a second wiring device, wherein the first wiring device and the second wiring device are respectively arranged at the upper part and the lower part of the rack; the first wiring device comprises a first clamping mechanism and a first direction adjusting mechanism; the second wiring device comprises a second clamping mechanism and a second direction adjusting mechanism; the first direction adjusting mechanism is used for driving the first clamping mechanism to move up and down, so that two conductive contact blocks of the first clamping mechanism can clamp a circuit breaker contact; and the second direction adjusting mechanism is used for driving the second clamping mechanism to move up and down, back and forth and left and right, so that the two conductive contact blocks of the second clamping mechanism can clamp the circuit breaker contact. In the testing process of the circuit breaker, through the first wiring device and the second wiring device of the automatic wiring tool for the circuit breaker, automatic wiring with the contact of the circuit breaker can be realized, the testing efficiency is high, and the automatic wiring requirement of circuit breaker maintenance can be met.

The utility model discloses an independently sealed connector, relates to the technical field of connectors, and solves the problem that a sealing ring is separated due to air pressure impact. Comprising an integrated shell, a plurality of mutually independent installation cavities are formed in the shell, a connecting terminal is installed in each installation cavity, the connecting terminals are connected with the connecting terminals in butt joint at front end cavity openings of the installation cavities, the connecting terminals are fixedly connected with external wires, and the external wires extend out from rear end cavity openings of the installation cavities. A sealing plug is installed at the rear end cavity opening of each installation cavity in a covering mode, a wire hole allowing an external wire to penetrate through is formed in each sealing plug, and the sealing plugs are in elastic contact with the rear end cavity openings of the corresponding installation cavities and the corresponding external wires to form sealing. The cavity bodies of the mounting cavities independently cope with air pressure changes, even if the air pressure in a certain mounting cavity changes, the air pressure cannot be directly transmitted to the sealing structures of other mounting cavities, and therefore the risk that the sealing plug is disengaged due to air pressure impact is reduced, and adaptability to the air pressure is enhanced.

The invention discloses a hair curler capable of realizing rotary electric contact based on a probe and an elastic sheet, which comprises a handle assembly (10) used for being held by hand, and a driving mechanism and a circuit assembly are arranged in a watch assembly; the clamping driving head (20) is used for detachably installing a hair curling assembly, and the clamping driving head (20) is installed on the handle assembly (10), connected with the driving mechanism and driven by the driving mechanism to do circumferential rotation; one end of the probe (8) assembly is fixedly connected with the first conductive plate (4) in the handle assembly (10), and the other end of the probe (8) assembly extends in the axial direction. Compared with a traditional conductive contact mode, the elastic piece conductive fixed ring and the elastic piece conductive movable ring can provide a large contact area, it is ensured that large-current transmission can be conducted in the rotating process, it is particularly important for the hair curler needing high-power output, it can be ensured that the hair curler is rapidly heated within a short time, and the heating efficiency of the hair curler is improved. And the user experience is improved.

The utility model discloses a high-power waveguide sealing connection structure for an electron accelerator, which comprises a front straight waveguide, a rear straight waveguide, a flat flange, a double-groove type flange and a metal gasket, and the corresponding end faces of the front straight waveguide and the rear straight waveguide are respectively connected with the flat flange and the double-groove type flange. The flat flange and the double-groove type flange are connected with each other through respective sealing end surfaces; an annular stepped groove is formed in the sealing end face of the double-groove type flange, surrounding edges are arranged inside and outside the stepped groove, the stepped groove comprises a positioning groove and an auxiliary groove, the metal gasket is provided with a protruding annular positioning frame, the metal gasket is arranged between the flat flange and the double-groove type flange in a cushioned mode, and the positioning frame is connected with the positioning groove in a matched mode. According to the utility model, the sealing problem of high-power waveguide installation is solved, good electric contact of the butt joint plane of the two waveguide metal flanges during high-power microwave transmission operation is realized, high-power microwaves are prevented from escaping, vacuum in the waveguide is ensured, and stable transmission of the high-power microwaves is ensured.

The utility model relates to the technical field of data transmission accessories, in particular to a data line adapter and a data line, the data line adapter comprises a wire connecting piece, a limiting piece, a rotating shaft and an interface conversion device with at least two different data interfaces, and the rotating shaft sequentially penetrates through the interface conversion device and the wire connecting piece. The wire connecting piece is electrically connected with the interior of the interface conversion device; the interface conversion device comprises a shell, the limiting piece is connected with the shell, a gap is formed between the limiting piece and the shell, and the wire connecting piece rotates in the gap. According to the interface conversion device, the space for rotation of the wire connecting piece can be limited through the gap formed between the limiting piece and the shell, so that the limiting effect is improved, the wire connecting piece can be effectively prevented from inclining on the interface conversion device, and good electrical contact is kept.

The present invention relates to an electro-discharge machining device, which comprises at least a carrier and an electro-discharge machining unit. The carrier is used to carry at least one workpiece to be machined. The electro-discharge machining unit comprises an electrode, a jig and a power supply unit. When the electro-discharge machining unit performs an electro-discharge machining process on a machining target area of the workpiece to be machined along a machining travel direction, a discharge section of the electrode moves relative to the machining target area of the workpiece to be machined. The present invention can improve the machining process, save the overall machining time and save the time required for replacing the electrode.

A magnetic field control self-enhancement type electromagnetic emission device based on armature line guidance comprises a magnetic field enhancement module, a track module and an armature module, and the magnetic field enhancement module is arranged on the armature module and comprises a plurality of magnetic field enhancement units at specific intervals; the track module comprises two tracks which are arranged in a space in parallel; the armature module can move along the track direction. According to the device, the self-enhancement type electromagnetic emission device is controlled by the magnetic field guided by armature lines, in the moving process of the armature, the magnetic field enhancement unit on the armature plays a role in guiding the flow direction of current and increasing the density of current flowing through the armature, self-enhancement regulation and control of the magnetic field are achieved, the problem of non-uniform magnetic force distribution is solved, and therefore the Lorentz force borne by the armature is increased; the propelling efficiency is improved; meanwhile, good electric contact is achieved, contact pressure of the pivot rail is increased, contact resistance is reduced, and heat generated by the contact face of the pivot rail is reduced.

The utility model relates to the technical field of electronic cigarettes, in particular to an electronic cigarette, a cigarette rod assembly and a cigarette rod support. The cigarette rod support comprises a support shell, the support shell is provided with a mounting cavity for dismounting and mounting a cigarette rod body, and the cigarette rod support further comprises a flexible positioning part which is arranged relative to the inner wall of the mounting cavity in a protruding mode. When the cigarette rod body is installed in the installation cavity, the flexible positioning part abuts against the outer wall of the cigarette rod body and is in interference fit with the cigarette rod body. According to the tobacco rod support, the tobacco rod body installed in the installation cavity can be fixed through the flexible positioning part, the tobacco rod body is effectively prevented from shaking relative to the tobacco rod support, an electric connection structure between the tobacco rod body and the tobacco rod support is effectively prevented from loosening, and good electric contact between the tobacco rod body and the tobacco rod support is guaranteed.

The utility model relates to the technical field of COME boards, and discloses a COME board with multiple expansion interfaces, which is integrated with a group of PCIe (Peripheral Component Interconnect Express) expansion modules with PCIe 3.0 * 8 interfaces and two groups of PCIe 2.0 * 8 interfaces. The USB interface module is provided with four paths of USB2.0 interfaces and four paths of USB3.0 interfaces; an onboard storage interface module with three paths of SATA3.0 interfaces; the network interface module is provided with two paths of 10 / 100 / 1000Mb self-adaptive gigabit network ports; the video output interface module is provided with an HDA interface, an HDMI interface, a VGA interface and an LVDS interface; according to the utility model, through modularized integration and scientific layout, anti-interference of a high-speed interface, easy plugging of a common interface and flexible configuration of a memory are realized, high-performance scene requirements are met, and diversified applications and special industrial expansion are adapted through multiple types of interfaces; and the three-dimensional anti-drop structure of the USB interface is fixed with the board body, so that the connection stability and the mechanical strength are enhanced.

The invention discloses a new energy intelligent charging pile which comprises a charging pile body and a conductive track, the charging pile body is arranged in a charging scene, the conductive track is arranged above the charging scene, the charging pile body comprises a motorized base, a power module, a mechanical arm and a lifting power connection structure, and the power module is fixedly installed on the motorized base through a supporting frame; and a mechanical arm is installed on the side face of the power module, a charging gun and a mechanical clamping hand are installed at the front end of the mechanical arm, and a lifting power connection structure is installed on the rear side of the power module. The full-process automation of vehicle identification, charging port positioning, baffle and sealing cover opening, charging gun plugging connection, charging completion and resetting is realized, the charging efficiency and safety are obviously improved, and manual intervention is reduced.

A photoelectric conversion device (100) includes a substrate (20) and a photoelectric conversion element (10) including a lower electrode (11), an electron transport layer (12) disposed on the lower electrode (11), a photoelectric conversion layer (13) disposed on the electron transport layer (12), and an upper electrode (15) disposed on the photoelectric conversion layer (13). A separation groove (P2) for connecting the upper electrode (15) of a photoelectric conversion element (10a) and the lower electrode (11) of a photoelectric conversion element (10b) is provided in a connection region between the two adjacent photoelectric conversion elements (10a, 10b). The upper electrode (15) is in contact with the upper surface of the electron transport layer (12) and the lower electrode (11) inside the separation groove (P2).

The invention belongs to the technical field of thermoelectric materials, and particularly relates to a packaging structure of a bismuth telluride thermoelectric device and a preparation method of the packaging structure. Comprising a bismuth telluride substrate and barrier layers deposited on the bismuth telluride substrate, the barrier layers comprise a Fe-Ni-Cr barrier layer and a Ti-Au barrier layer, the Fe-Ni-Cr barrier layer is located on the upper surface of the bismuth telluride substrate, a copper substrate is arranged on the upper surface of the Fe-Ni-Cr barrier layer, the Ti-Au barrier layer is located on the lower surface of the bismuth telluride substrate, and a silver electrode layer is arranged on the lower surface of the Ti-Au barrier layer. The barrier layer is deposited on the bismuth telluride substrate, the Fe-Ni-Cr layer constructs a stronger connection interface, and stronger mechanical connection performance is provided in the process of hindering subsequent element diffusion; the constructed Ti-Au barrier layer effectively improves the mechanical strength and diffusion barrier effect of connection, and has remarkable advantages compared with a system without a barrier layer.

The invention discloses a heat dissipation waterproof connector, which comprises a shell, a conductive assembly, a locking assembly and a waterproof assembly, and is characterized in that the shell is internally provided with an accommodating space, the surface of the shell is provided with two through wire holes, and the two side surfaces of the shell are both provided with a plurality of heat dissipation holes, so that a convection air channel is formed in the accommodating space; the conductive assembly is arranged in the accommodating space, the conductive assembly is provided with a first arc-shaped part and a second arc-shaped part, and the first arc-shaped part and the second arc-shaped part are respectively opposite to the two wire holes; the locking assembly is installed on the shell, the locking assembly can move between a locking position and an unlocking position, the two waterproof assemblies are correspondingly installed on the two side faces of the shell, each waterproof assembly has a first state and a second state, and when the waterproof assemblies are in the first state, the waterproof assemblies block the heat dissipation holes; in the second state, the waterproof assembly and the heat dissipation holes are staggered in position. The connector has excellent heat dissipation performance and waterproof performance at the same time.

The present invention belongs to the technical field of lithium batteries, and discloses a lithium alloy negative electrode with a reserved space and an integrated conductive skeleton and a preparation method thereof. A lithium-rich alloy layer is provided at the lower layer of the alloy skeleton layer, and the lithium-rich alloy layer contains a three-dimensional skeleton formed by a lithium solid solution / intermetallic compound. The upper layer of the lithium alloy negative electrode is a reserved space formed by the three-dimensional alloy skeleton remaining after the lithium single phase is selectively removed by an organic solvent and the gaps between the skeletons. The skeleton in the surface reserved space and the skeleton in the lithium alloy are both three-dimensional integrated skeleton structures formed in situ by lithium solid solution or intermetallic compound, which significantly improve the cycle performance of the battery. At the same time, the thickness of the reserved space skeleton layer can be strictly controlled by the concentration of the organic solution and the immersion time, which is suitable for rapid preparation by the roll-to-roll method, and is convenient for commercial mass production applications.

The invention discloses a large steam turbine generator carbon brush grinding machine which comprises a machine frame, a grinding roller, a transmission device, an adjusting device, a brush box and a control device. The transmission device comprises a transmission assembly, the transmission assembly is arranged on one side of the rack, and the transmission assembly is connected with the grinding roller; the adjusting device comprises a first adjusting assembly and a second adjusting assembly, and the first adjusting assembly is arranged on one side of the rack in a sliding mode; the second adjusting assembly is rotatably arranged on the first adjusting assembly; the brush box is arranged on the top of the second adjusting assembly. The control device comprises a control assembly, and the control assembly is arranged on one side of the rack. Therefore, the contact area of the carbon brush and the collector ring is obviously increased, the radian of the surface of the carbon brush is perfectly matched with the radian of the diameter of the collector ring, the precision of manual grinding is greatly improved, and in addition, the technology also greatly enhances the safety when the carbon brush is replaced in the running state of the generator.