42results about How to "Does not affect conduction" patented technology

The present invention provides an enhanced-mode high electron mobility transistor. The transistor includes a grid electrode, a source electrode, a drain electrode, a p type layer, a barrier layer, and a passivation layer arranged on the barrier layer. A part region on the passivation layer is provided with a secondary epitaxy figure formed by etching to the upper surface of the barrier layer. The barrier layer also includes a trench formed by further etching to the inner side of the barrier layer in a local region of the figure. The p type layer that is grown through secondary epitaxy is in the figure and the trench. The p type layer in the trench is contacted with a grid electrode metal on the p type layer in the trench. The p type layer that is not in the trench is contacted with a drain electrode metal on the p type layer that is not in the trench. The present invention also provides a preparation method of the transistor and a semiconductor device including the transistor. According to the transistor, due to a trench grid and the p type layer grown through secondary epitaxy in a selected region, a threshold voltage of the device is increased; and a part of the barrier layer is etched, so that a saturated current of the device is greater than the current of the trench grid type high electron mobility transistor (HEMT). In addition, the p type layer is also grown in a selected region of the drain electrode metal, so that the turn-off effect of the device is improved.

A parallel circuit breaker is provided, which belongs to a high-voltage high-capacity circuit breaker and is to provide automatic current equalization and current limitation and realize the parallel operation of a plurality of arc-extinguishing chambers. The invention comprises parallel-connected 2-4 shunts each comprises an inductance coil and an arc-extinguishing chamber of switches in series connection, wherein the induction coil is enwound around a share iron core to form a coupling inductance coil and the turn number of inductance coil of each shunt is the same. The system current flows through the inductance coils of the 2-4 parallel-connected shunts individually and the arc-extinguishing chambers in series connection with the shunts. The magnetic flux of the magnetic circuit produced by the interaction between the iron core and the inductance coil of each shunt is opposite to that of the other shunts. The arc-extinguishing chamber of each shunt has high capacity, 2-4 parallel-connected arc-extinguishing chambers share the parallel-connected arc-extinguishing chamber device controlled by the same system, or are connected in parallel by 2-4 separated circuit breakers. Based on the structure of the coupling inductance, the invention realizes the parallel-connected on-off of a plurality of arc-extinguishing chambers of the circuit breakers and improves the capacity of on-off of the whole circuit breaker.

In order to solve the problem of narrow electrochemical window of a solid electrolyte in the prior art, the invention provides a solid electrolyte. The solid electrolyte comprises a core material and a shell material, wherein the shell material wraps the core material, the core material has the following chemical formula: Li(1+x)MxTi(2-x)(PO4)3, M is selected from at least one of Al, La, Cr, Ga, Y and In, x is more than or equal to 0.05 but less than or equal to 0.4, the ionic conductivity of the shell material is over 10<-6>S/cm, and the electrochemical window of the solid electrolyte is larger than 5 volts. Meanwhile, the invention also discloses a preparation method of the abovementioned solid electrolyte and a lithium ion battery applying the solid electrolyte. The solid electrolyte provided by the invention is wide in electrochemical window and high in the ionic conductivity.

The invention provides an intelligent moxibustion instrument. The intelligent moxibustion instrument comprises a vertical charging barrel, an ash-collecting tower platform, a moxa stick drive unit andan intelligent control unit, wherein the ash-collecting tower platform is fastened to the charging barrel, and the moxa stick drive unit and the intelligent control unit are arranged in the chargingbarrel; the moxa stick drive unit comprises a moxa stick sleeve and a stepping motor, the stepping motor is arranged above the moxa stick sleeve, and the stepping motor drives a moxa stick to move vertical through gear-rack transmission; the intelligent control unit comprises a battery, a circuit board and a temperature sensor, the battery is arranged above the stepping motor and supplies power for the whole moxibustion instrument, the circuit board is fixed above the battery, the temperature sensor is arranged in the ash-collecting tower platform, the battery is connected with the circuit board and supplies power for the same, and the circuit board is connected with the temperature sensor through an input and output end. The intelligent moxibustion instrument has the advantages that the combustion progress of the moxa stick is sensed through the temperature sensor, the sensor transmits a signal to the circuit board when the temperature is lower than a rated value, and the circuit board controls the stepping motor to push the moxa stick to move downwardly through mechanical transmission so as to guarantee temperature constancy.

The invention relates to the field of lithium ion batteries, and specifically relates to a solid electrolyte and a preparation method thereof, and a lithium ion battery. The solid electrolyte is of acore-shell structure; the core-shell structure comprises a core material and a shell material coated outside the core material; and the core material has a perovskite structure, and the shell materialcontains Li3+yY2SiyP3-yO12, wherein y is greater than or equal to 0.05 but less than or equal to 0.5. The invention further relates to the preparation method of the solid electrolyte. The invention further relates to the lithium iron battery, and the lithium ion battery includes a positive electrode, a negative electrode, and the solid electrolyte disposed between the positive electrode and the negative electrode. The solid electrolyte provided by the invention has a wide electrochemical window and a relatively high ionic conductivity, and has a wide application.

The invention relates to the field of lithium batteries, and discloses a lithium ion solid electrolyte with a core-shell structure and a preparation method. The preparation method comprises the following steps of (1) mixing Li2CO3, Al2O3, TiO2 and NH4H2PO4, calcining, cooling, grinding and sieving to obtain core layer powder; (2) adding LiOH H2O, H3BO3, NH4H2PO4 and NH4F into deionized water, uniformly stirring, adjusting the pH value, adding silica sol, and mechanically stirring to obtain sol; and (3) adding the core layer powder and Al (H2PO4) 3 into the sol, carrying out spray drying, sintering the obtained precursor material, cooling, grinding, washing, and drying to obtain the lithium ion solid electrolyte with the core-shell structure. Compared with a common inorganic solid electrolyte, the inorganic solid electrolyte with the core-shell structure has the advantages that a complete and compact electron shielding layer is formed on the surface of a base material, so that an electrochemical window is wide, the ionic conductivity is high, and the application prospect is good.

The invention discloses plasma etching cleaning liquid, a method for preparing the same and application of the plasma etching cleaning liquid. The plasma etching cleaning liquid is prepared from raw materials comprising dispersing agents, hydroxylamine compounds and/or salt of the hydroxylamine compounds, organic solvents, corrosion inhibitors, organic amine, cyclodextrin-modified alkylene diol alkyl ether compounds and water. The plasma etching cleaning liquid, the method and the application have the advantages that the plasma etching cleaning liquid can be used for cleaning etched and ashedsemiconductor chips; good cleaning effects can be realized by the plasma etching cleaning liquid, the plasma etching cleaning liquid is nearly free of agglomeration in long-term placing and using procedures, is basically free of particle generation and is low in metal and nonmetal corrosion speed, and accordingly the plasma etching cleaning liquid and the method have excellent industrial application and popularization prospects.

The invention discloses a novel universal joint handheld laser welding gun. Two veering reflector parts which are rotatably connected mutually are arranged between a collimating mirror part and a focusing reflector part, a gun nozzle part is arranged at the outer side of a protection mirror part, one end of the gun nozzle part is connected with a protection air pipe, and the other end, at an outlet of a photoemission channel, of the gun nozzle part is of an arc structure; each veering reflector part comprises a right-angle shell provided with a light channel and a reflective part which is arranged inside the light channel and conducts right-angle reflection on a light path, each right-angle shell is rotatably connected with the collimating mirror part and the focusing reflector part, a gunhandle part is arranged on the focusing reflector part, and a protection part for protecting the photoemission channel is arranged on the protection mirror part. According to the novel universal joint handheld laser welding gun, by adding a veering mechanism on the basis of an existing laser welding gun, changing the structure of the gun nozzle part of the welding gun, and increasing the veeringdegree of freedom of the joint of cables, the blowing direction of shielding gas is changed, the situation that weld dust residues enter the photoemission channel, and adhere to and contaminate the protection mirror part is prevented, it is avoided that due to swinging of the cables, optical fiber cables are broken off, and meanwhile, the working efficiency is improved.

The invention discloses a board-to-board connector, which includes an insulating body and several connector terminals, each connector terminal is held in a corresponding receiving cavity of the insulating body, and the connector terminal includes a terminal body and a welding leg , the two sides of the bottom of the terminal body are respectively protruded with welding feet for welding, and the two sides of the terminal body are respectively provided with contact ports. It is characterized in that: at least one upward bending structure, at least one concave cut is provided on the terminal body between the solder leg and the contact port. The invention solves the problem that board-to-board connectors in the prior art are prone to poor tin creeping during furnace welding, which affects the conduction of the board-to-board connector, and provides an adjustable solder paste thickness, solder joint Full, use reliable board-to-board connectors with better conduction performance.

The invention provides a piston type vacuum coaxial valve with vacuum as a power air source. The piston type vacuum coaxial valve comprises a piston type valve element, an air cylinder barrel, pressing blocks, sealing blocks, sealing rings, a sealing valve seat and an electromagnetic control device. The piston type valve element is in a barrel shape, is arranged in the air cylinder barrel in a sleeved manner and can do reciprocating motion. The sealing blocks are arranged at the two ends of the air cylinder barrel and used for sealing a sealing gap between the piston type valve element and the air cylinder barrel. The pressing blocks are arranged at the outer ends of the sealing blocks and used for pressing the sealing blocks tightly. The sealing valve seat is arranged at the outlet end of the piston type valve element and used for sealing an end opening of the piston type valve element. The sealing rings are located on mutual contacting faces of the components. By adopting the scheme, it is not needed to externally connect a power air source, the vacuum serves as the power air source, opening and closing of the coaxial valve can be achieved through a small-power two-position three-way solenoid valve, the consumed power is small, and operation is convenient and rapid.

The invention discloses an automobile seat cushion with a heating function, which comprises a headrest area, a vertical cushion, a seat cushion and a back cushion, the bottom end of the back cushion is fixedly connected with the seat cushion, the corners of the seat cushion and the back cushion are provided with side bags, the outer side walls of the seat cushion and the back cushion are provided with inner grooves, the outer side wall of the back cushion is fixedly connected with a connecting structure. Detachable cushions are adhered to the outer side walls of the back cushion and the seat cushion, a magic tape sliding surface is mounted at one end of each detachable cushion, and magic tape sticking surfaces are mounted on the outer side walls of the back cushion and the seat cushion. The back surface of the detachable cushion is provided with the magic tape sliding surface, so that when the back cushion needs to be cleaned and tidied, the detachable cushion can be adhered and fixed with the magic tape sticking surface arranged on the outer wall of the back cushion through the magic tape sliding surface arranged on the back surface of the detachable cushion, the detachable cushion and the back cushion can be conveniently disassembled and assembled through the arrangement, and local replacement and cleaning can be performed when the back cushion is used. The back cushion is convenient to disassemble, the situation that overall replacement is strenuous is avoided, and the use design is more convenient and humanized.

The invention discloses a rapid target-scoring paper and a processing method thereof. The rapid target-scoring paper comprises a first main wire and a second main wire, first branched wires and secondbranched wires are separately connected to the first main wire and the second main wire, the first branched wires and the second branched wires are mutually arranged at intervals, the first branchedwires are connected through a first bus, and the second branched wires are connected through a second bus. The processing method of the rapid target-scoring paper comprises the following steps that two films separately as a first film and a second film are prepared, the first main wire, the first branched wires, the second main wire and the second branched wires are printed on the first film, insulating layers are separately printed on the first branched wires and the second branched wires, printing buses are printed on the insulating layers, and the second film covers and is bond on the firstfilm. According to the rapid target-scoring paper and the processing method thereof, the invalid range of the rapid target-scoring paper can be effectively reduced, and the detection capacity is improved.

The invention relates to a test tube membrane structure, belongs to the field of medical equipment and specifically relates to a disposable test tube membrane structure. The disposable test tube membrane structure comprises a supporting body membrane sleeve and a pipe body membrane sleeve; the supporting body membrane sleeve is used for covering a test tube slot arranged on a test tube supportingbody; and the supporting body membrane sleeve is arranged to be opposite to the test tube slot and is capable of generating deformation towards the inside of the slot with the insertion of a test tubeso as to sleeve the outer surface of the test tube. The test tube membrane structure is capable of keeping a test tube rack clean, convenient to use in an existing constant-temperature test tube rack, simple in structure and capable of effectively reducing the probability of cross pollution.

The invention relates to the technical field of water purification, and provides water purification equipment. The water purification equipment includes: a shell; a first mounting base which is fixed to the top of the shell, wherein a water inlet connector is arranged on the first mounting base; a raw water tank which is detachably installed on the first mounting base, wherein the raw water tank comprises a water inlet, a first valve assembly is arranged at the water inlet, the water inlet is switched between the position where the water inlet is connected with or disconnected from a water inlet connector, and the first valve assembly closes the water inlet at the disconnection position. According to the water purification equipment, the raw water tank is arranged above the shell, water pouring and water filling are more convenient and accord with habits of people, and the water level condition in the raw water tank can be conveniently observed. Wherein the raw water tank can be moved to any place with a clean water source. When the raw water tank is installed on the first mounting base, the valve assembly is opened, and communication between the water inlet and the water inlet connector is not affected. When the raw water tank leaves the first mounting base, the water inlet in the bottom of the raw water tank is closed by the first valve assembly, and water in the raw water tank is prevented from leaking.

The invention provides tin-based high-resistance film coating liquid. The tin-based high-resistance film coating liquid is prepared from tin-based alloy, water, a dispersing agent, a thickening agent and ethyl alcohol. The invention further provides a preparation method of the tin-based high-resistance film coating liquid. Furthermore, the invention further provides a preparation method of the tin-based high-resistance thin film. According to the tin-based high-resistance film provided by the invention, the specific film coating liquid and the multi-layer dip-coating process are adopted, so that the film which not only can ensure the export of static electricity, but also does not affect the conduction of signals is obtained.