118results about How to "Ensure normal conduction" patented technology

The invention provides a solar cell sheet and a solar cell. A grid line electrode is arranged on the solar cell sheet, and the grid line electrode comprises a plurality of auxiliary lines and a plurality of electrode contact points, wherein the tail ends of the auxiliary lines on the same side are connected with communicating grid lines in a two-two phase way; and the electrode contact points and the auxiliary grid lines are connected. In the solar cell sheet, because a plurality of electrode contact points are used to replace the traditional main grid line, the consumption of silver paste is greatly reduced, and the production cost is economized. Meanwhile, electrons are ensured to be still conducted and collected when a certain part of auxiliary grid lines are broken, the authenticity and the repeatability of test data are also ensured when an electric performance test is performed by using a probe rank, the electric connection between the grid line electrode and a connecting solder strip can be realized at low temperature by using the conducting adhesive tape bonding way, and the technological adaptability and the stability of the grid line electrode are improved.

The invention relates to the technical field of a lithium battery, in particular to a lithium metal negative electrode structure combination and a preparation method thereof. The metal lithium negative electrode structure combination comprises a negative electrode structure and a surface modification layer, wherein the surface modification layer is formed on the negative electrode structure, the negative electrode structure comprises a negative current collector and a lithium metal negative electrode layer, the lithium metal negative electrode layer is formed on the negative current collector,the negative current collector, the lithium metal negative electrode layer and the surface modification layer are arranged in a lamination way, the lithium metal negative electrode layer comprises alithium metal active material, and the surface modification layer comprises a lithium compound having ion conduction characteristic. The surface modification layer has a modification effect on a surface of the lithium metal negative electrode layer, the surface defect of the lithium metal negative electrode layer is improved, the situations that charges are not uniformly distributed on the lithiummetal negative electrode layer during the charge-discharge process to form lithium dendrites and an electrolyte separator layer is punctured to cause short circuit of the battery are prevented, meanwhile, the lithium dendrites are limited from being formed on the lithium metal negative electrode layer, so that the charges are uniformly distributed on the lithium metal negative electrode layer, and the specific capacity density of the lithium metal negative electrode layer is improved.

The invention discloses an ignition control circuit of a downhole electric detonator for perforation. The ignition control circuit comprises a wide-input-range power supply voltage stabilizing circuit, a signal detection and processing circuit and an ignition selecting switch circuit, wherein the wide-input-range power supply voltage stabilizing circuit is used for stabilizing voltage and then outputting direct current of 10V and direct current of 5V when direct current of 20-40V is input to a downhole ignition control circuit by a ground system through a single-core cable, so as to supply power to the signal detection and processing circuit and an ignition switch circuit; the signal detection and processing circuit is used for receiving ignition control commands from the ground system, controlling the connection/disconnection of the ignition selecting switch circuit according to the commands and controlling the detonation of the electric detonator; the ignition selecting switch circuit is used for being connected with the electric detonator. The ignition control circuit has the advantages that the circuit access of the downhole electric detonator during detonation can be realized safely and reliably, meanwhile, the detonation circuit access of the electric detonator resulting from accidental circuit conduction can be prevented, and the effect of protecting and igniting a detonation circuit can also be exerted under the extreme cases that the detonation circuit is short-circuited.

The invention relates to a cover (1) for a drainage channel (2) to be installed in the ground to drain the surface of an area. The cover (1) comprises a substantially planar portion (3) which is constructed so as to cover an opening at the top of the drainage channel (2) and which comprises a projection (5) that extends upward from the planar portion (3). The projection (5) defines an inlet (7) through which the water that runs off from the surface to be drained can enter the drainage channel. In addition, the planar portion (3) defines comprises supplementary apertures (9) to receive water that has percolated down to its lower level.

The invention brings forward a luminescence apparatus, a projection display apparatus and a lamp fixture. The luminescence apparatus comprises a laser source and an optical system, also comprises a first housing which is formed by assembling at least two first housing assemblies for enclosing the laser source and the optical system inside, and further comprises a wavelength conversion rotation disc for receiving laser emitted from a laser exit port of the first housing and at least partially converting the laser into stimulated light. The luminescence apparatus also comprises a second housing which is formed by assembling at least two second housing assemblies for enclosing the first housing and the wavelength conversion rotation disc inside, wherein the inner surface of the second housing comprises a second heat dissipation area opposite to a first heat dissipation area in terms of positions, and the first heat dissipation area is in hot connection with the second heat dissipation area. According to the invention, the laser source and the optical system are enclosed by the first housing and the second housing for two times, and compared to enclosing once, the probability that dust passes through two enclosures to go into a laser optical path is reduced by several orders of magnitude.

The invention belongs to the technical field of biological materials, and particularly relates to a scaffold material for nerve regeneration based on silk fibroin fibers. Silk fibroin is obtain aftera series of treatments are performed on silkworm cocoons, and a silk fibroin solution is obtain after the silk fibroin is dissolved with formic acid; aniline reacts in a hydrochloric acid solution ofammonium persulfate to obtain polyaniline powder which is dissolved in part of the silk fibroin solution to obtain a polyaniline silk fibroin solution; and finally, the silk fibroin solution and the polyaniline silk fibroin solution are mixed for electrostatic spinning to obtain the scaffold material. The invention solves the problem that the silk fibroin has low electric conductivity and cannot be used for nerve repair, and the prepared scaffold material not only has high biocompatibility and mechanical property, but also has a high electrophilic property, and the conduction of a nerve conduit to an electric signal is not blocked.

The invention belongs to the field of chip preparation, specifically, provides a multi-layer zirconia solid electrolyte composite chip and a preparation method thereof. The multi-layer zirconia solid electrolyte composite chip provided by the invention is formed by alternatively overlying stabilized zirconia oxygen ion conduction membranes (1) and stabilized zirconia cementation isolating membranes (2). The tabilized zirconia oxygen ion conduction membranes use a stabilized zirconia of which a molar ratio is about 8% so as to ensure the conduction of the oxygen ions, and the stabilized zirconia cementation isolating membranes use the stabilized zirconia of which a molar ratio is about 3% so as to improve mechanical performance of the overall composite chip; and the two types of membranes both use the stabilized zirconia so as to implement matching of thermal expansion coefficient and shrinkage factor of the material of each layer. The two types of membranes have different particle sizes and additions to generate different densities, which favors burning off organic matters and organically bonding membranes.

The invention discloses a high-temperature superconduction four-pole magnet structure applicable to a particle medical transportation technology. The high-temperature superconduction four-pole magnetstructure comprises a yttrium barium copper oxide high-temperature superconduction coil, a low-temperature conduction cooling structure, a coil connector design, an iron core and coil external vacuumheat insulation structure and an epoxy plate support assembly, wherein a yttrium barium copper oxide strip is embedded into a coil matrix groove, each high-temperature superconduction coil of the magnet is connected in series, the high-temperature superconduction connector is pressed and connected by an indium sheet, the coil is conducted and cooled by a refrigerating machine, a cold screen and atile are further arranged outside the iron core and the coil and are used as the vacuum heat insulation structure, and an iron core assembly in the magnet and the cold screen are fixed by the epoxy plate support assembly. By the high-temperature superconduction four-pole magnet structure, the focusing function of particle beams in a particle transportation system can be achieved, and the size, theweight and the cost of the magnet are effectively reduced; and the requirements such as low-temperature conduction cooling, structural strength, leakage heat reduction and quench protection of a superconduction wire stably running at a temperature zone of 40K are met, and the miniaturization, the lightness and the low cost of the magnet structure are achieved.

The invention provides a grid protection circuit and power electronic equipment. The grid protection circuit comprises a main transmission line, a reference module, a comparison module, and a voltage stabilization module, wherein the main transmission line is connected between a grid driving module and the grid of an MOS transistor; the reference module is used for generating a reference signal; two input ends of the comparison module are respectively connected with the grid driving module and the reference module for comparing a grid driving signal and the reference signal; and the voltage stabilization module is connected between the output end of the main transmission line and the ground wire, and the driving end of the voltage stabilization module is connected with the output end of the comparison module. When the grid driving signal is larger than or equal to the reference signal, the comparison module outputs an on signal to the voltage stabilization module to control the voltage stabilization module to be on, the voltage stabilization module outputs a clamp voltage signal to the grid of the MOS transistor, and the clamp voltage signal is smaller than the grid driving signal. Through the technical scheme of the invention, the reliability and the accuracy of over current protection are enhanced.

The invention relates to the technical field of a lithium battery, particularly a graphite negative electrode structure combination and a preparation method thereof. The graphite negative electrode structure combination comprises a negative electrode structure and a surface modification layer formed on the negative electrode structure; the negative electrode structure comprises a negative electrode current collector and a graphite negative electrode layer formed on the negative electrode current collector; the negative electrode current collector, the graphite negative electrode layer and thesurface modification layer are arranged in an overlaid manner; the graphite negative electrode layer comprises a graphite active material; and the surface modification layer comprises a lithium compound with the ionic conduction characteristic. By taking the surface modification layer as a stable artificial SEI membrane, lithium ion damage in the charging cycle process can be well reduced, the initial charging and discharging coulombic effect is improved, and the specific capacity density of the graphite negative electrode layer is improved; and meanwhile, the surface modification layer can well block macromolecule groups from being nested into the graphite negative electrode layer along with lithium ions, so that stripping of graphite can be avoided, the structural stability of the negative electrode structure can be maintained, and stable conductive performance can be achieved.

The invention relates to a high-toughness high-conductivity carbon paper material for a proton exchange membrane battery, and belongs to the technical field of carbon paper materials. By utilizing a constant-temperature liquid-phase oxidation-reduction reaction between potassium permanganate and concentrated sulfuric acid, a nano manganese dioxide material is effectively loaded on the surface of the carbon paper material; meanwhile, polydimethylsiloxane is effectively coated on the surface of the polydimethylsiloxane, and the cross-linked polydimethylsiloxane is etched through hydrofluoric acid; the polydimethylsiloxane material is effectively etched, and holes are formed in the polydimethylsiloxane material, so that the conduction of the current material is ensured; meanwhile, the material structure is effectively coated and improved by the technical scheme; and a layer of ultrathin nano MnO<2> nano film is prepared on a carbon paper substrate by a chemical oxidation-reduction method,in this way, the specific surface area of the MnO<2> film electrode can be greatly increased, the capacity of double electric layers is increased, the electrochemical performance and power performance of the MnO<2> material are brought into full play, the utilization rate of the MnO<2> material is increased, meanwhile, the toughness and strength of the material are effectively modified through the coated and modified polydimethylsiloxane, and the mechanical property of the material is improved.

The invention provides a time-delay switch driving circuit and system and relates to the technical field of switch control driving circuits. The circuit comprises a control circuit, a switch circuit and a time delay circuit, wherein the control circuit, the switch circuit and the time delay circuit are electrically connected in sequence, an input end of the control circuit is electrically connected with a power-off control pin, an output end of the time delay circuit is connected with a controlled switch power supply, the control circuit controls the switch circuit and the time delay circuit to be disconnected or connected through a level signal outputted by the power-off control pin in an enabled state or an unenabled state, so the time delay circuit outputs a power-off signal or a restart signal to the controlled switch power supply to control the controlled switch power supply for being disconnected and automatically restarted, moreover, through the time delay circuit, the controlled switch power supply can be powered off or restarted after the power-off control pin outputs the level for a preset time, and thereby a capacitive load in an electronic equipment system can be completely discharged before restarting, and damage to the controlled switch power supply is avoided.

The invention belongs to the technical field of road snow melting and deicing, and particularly relates to a self-stress pavement and phase-change material mixed pavement ice melting system and a construction method, and the self-stress pavement and phase-change material mixed pavement ice melting system comprises an asphalt concrete road structure, a rubber asphalt concrete layer and a phase-change material functional layer; the rubber asphalt concrete layer is laid on the upper surface of the phase change functional layer; and the phase change functional layer is arranged between the asphalt concrete road structure and the rubber asphalt concrete layer. According to the ice melting system for the self-stress pavement and the phase-change material mixed pavement and the construction method, the snow melting and ice melting effects can be effectively ensured, the pavement ice can be crushed, and environmental protection and energy conservation are achieved.

The invention relates to an automatic safe take-up wheel, and belongs to the field of electric power. Screw threads are arranged on a center shaft; a wire wheel is arranged on the center shaft; the center shaft is arranged in a center sleeve of the wire wheel; a clockwork spring box is arranged in the middle position of the center shaft; one end of a clockwork spring is connected with the center shaft; the other end of the clockwork spring is connected onto the wire wheel; a cable is wound on the wire wheel; a conducting component is also arranged on the center shaft; the inner layer cable end is connected onto the conducting component from the wire wheel side; and wiring terminals are arranged on the conducting component. By using the technical scheme, unidirectional electric power can be connected, and three-phase electric power can also be connected; meanwhile, the automatic rotation of the wire wheel for cable winding can be realized; the automatic cable take-up and pay-off can be realized; and great convenience is brought to constructors.

The invention discloses a highly attachable high-conductivity photovoltaic welding strip. The welding strip comprises a cell sheet, a lower tin layer, a copper baseband and an upper tin layer. The upper tin layer, the copper baseband and the lower tin layer are successively attached on an upper side surface of a silver paste layer on the upper side surface of the cell sheet from top to bottom. Two protruding grooves, which are towards the upper tin layer, are symmetrically arranged on the copper baseband. The photovoltaic welding strip can not only guarantee joint strength between the copper baseband and the cell sheet but also guarantee conductive performance of the welding strip.

Disclosed urea microvia structure of a flexible circuit board and a manufacturing method thereof. A first through hole is formed in a first conductive layer of a flexible circuit board and a first exposed zone is defined. A second conductive layer includes a second through hole formed therein and defines a second exposed zone. A dielectric layer includes a dielectric layer through hole corresponding to the second through hole of the second conductive layer. A conductive paste layer is filled in the second through hole of the second conductive layer, the dielectric layer through hole of the dielectric layer, and the first through hole of the first conductive layer in such a way that the conductive paste layer covers and electrically contacts the first exposed zone of the first conductive layer and the second exposed zone of the second conductive layer.

The invention discloses a PCB inner circuit interconnection structure and a processing method thereof, and is used for solving problems related to signal transmission and caused by a conventional via hole stub and ensuring layer-to-layer conduction. The technical scheme is that the PCB inner circuit interconnection structure comprises a conductive material arranged between an Lm layer and an Lm+1 layer of the PCB inner circuit and used for achieving layer-to-layer conduction, and a via hole passing through the position of the conductive material, hole copper of the via hole is connected with the conductive material, hole copper of the via hole in certain depth is removed, the depth of the removed hole copper is between the Lm layer and the Lm+1 layer, and m is a positive integer.

The invention provides an ignition driving circuit, which comprises an input end, a photocoupler U1 and a VDMOS tube Q1, wherein an input signal of the input end is connected in series with a diode D1and a diode D2 via a resistor R1 and then connected to the positive end of a light emitting tube of the photocoupler U1, and the negative terminal of the light emitting tube is connected with the signal ground; a power source is connected in series with the resistor R2 and the resistor R3 and is connected to a photosensitive tube collector of the photocoupler U1, and the emission electrode of thephotosensitive tube is connected with the power ground; meanwhile, the power supply is subjected to voltage division through the resistor R2 and the resistor R3 and drives the grid electrode of the VDMOS tube Q1, and two reverse voltage regulators D3 and D4 are connected in series between the grid electrode and the source electrode of Q1; and a load resistor RL is connected in series between thedrain electrode of the VDMOS tube Q1 and the power ground. The ignition driving circuit in the invention is directed to the specific use requirements of the ignition system and the situation of the load grounding end, considering the isolation between the front and rear stages to improve the anti-interference ability of the circuit and designing an ignition circuit and the like with small packagesize and strong driving capability.

The invention discloses an automobile exhaust waste heat recycling device. The automobile exhaust waste heat recycling device comprises two waste heat power generation parts and an SCR power generation part, and the waste heat power generation parts are arranged at the two ends of the SCR power generation part respectively; each waste heat power generation part comprises an exhaust pipeline, multiple gas tanks and multiple water tanks, wherein the gas tanks and the water tanks are circumferentially and uniformly distributed along the central axis of the exhaust pipeline and distributed in a crossed mode, a temperature differential power generation module is arranged between each gas tank and the corresponding water tank, and the gas tanks are communicated with the exhaust pipeline through vent holes; and the SCR power generation part comprises a middle shaft, multiple SCR reaction devices and multiple water tanks, the SCR reaction devices and the water tanks are circumferentially and uniformly distributed along the central axis of the middle shaft and distributed in a crossed mode, a temperature differential power generation module is arranged between each SCR reaction device and the corresponding water tank, and the two ends of each SCR reaction device are communicated with the gas tanks corresponding to the two ends of the SCR reaction device respectively. The device is of a multi-stage heat recycling structure, the overall size is decreased, and the exhaust heat recycling rate and the power generation rate are increased.

The invention discloses a drive and control circuit of a large-power gate-turn-off thyristor (GTO), and belongs to the technical field of the drive and control of the large-power controllable thyristor. The drive and control circuit is divided into two parts: a logic control circuit and an energy output circuit; the two parts realize the reliable electric isolation from the providing of the powerenergy and the output of a control signal; and meanwhile, the logic control of the drive and control circuit is realized through an analog circuit, the code programming demand is unnecessary, and theelectromagnetic interference resistance of the drive and control circuit is greatly increased; and meanwhile; the logic control circuit can realize the smooth switch and seamless connection of variousenergy units of the energy output circuit at different switch-on/off stages through the precise cooperation of various control units; and finally, the drive and control circuit can safely and reliably drive and control the GTO, and realize the DC current with the highest switch-on and switch-off amplitude of 3500A.