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73results about How to "Significant rise in temperature" patented technology

A structure of SiC UMOSFET integrated with SBD and a preparation method thereof

The invention provides a silicon carbide trench gate metal oxide with semiconductor field effect transistor (SiC UMOSFET) structure integrated Schottky diode (SBD) and a method for manufacturing the same, The structure is characterized by, a p +-type bury layer (50) is formed on the n-type current transport layer (40) by implantation, and further an n-type current transport layer (40) is epitaxially formed so that the p +-type buried layer (50) floats, and the p +-type buried layer (50) can effectively reduce the electric field in the gate trench oxide and the electric field at the Schottky contact position in the blocking mode, so that the SBD integrated SiC UMOSFET has high blocking ability, and the high temperature and high field reliability of the device are greatly improved. At that same time, the relative position of the main trench (80), the main trench (80') and the p +-type buried layer (50) and the n-type current transport layer (40) are adjusted so that when the MOSFET is operated in the first quadrant, the conduction characteristic of the MOSFET does not degrade significantly; When the MOSFET is operated in the third quadrant, the conduction of the parasitic pn diode inthe MOSFET is effectively suppressed and the Schottky diode conduction mode is obtained. SiC UMOSFETs with integrated SBD have a lower total chip area than discrete SBD and MOSFET devices.
Owner:INST OF SEMICONDUCTORS - CHINESE ACAD OF SCI

Left wheel popup box type porous pull-down plug graphite water gap device of electromagnetic slag smelter

The invention provides a left wheel popup box type porous pull-down plug graphite water gap device of an electromagnetic slag smelter. The left wheel popup box type porous pull-down plug graphite water gap device of the electromagnetic slag smelter structurally comprises a moving arm, a plug shifting arm, a plug shifting air cylinder, a pin shaft, a fixed frame, a rotating shaft, a plug pushing air cylinder, a graphite water gap, a graphite plug and a porous cone. The left wheel popup box type porous pull-down plug graphite water gap device of the electromagnetic slag smelter has the advantages of achieving the effects that the blocking of high temperature slag in base flow of an electromagnetic induction slag smelter is relieved when the flow is open, and the flow is controlled at a constant temperature. Besides, the technological requirements of rock wool production are met, and a bottleneck is broken for the production of high quality rock wool. The designed bottom leakage deslagging water gap ensures flow accuracy, can be opened and closed at will, and does not waste melts. The energy consumption is low, thermal efficiency is high, the amount of waste residue is small, the fiber forming rate is high, and the cost advantage is obvious. The electromagnetic slag smelter is not only excellent in temperature rise and regulation performance, heat preservation performance and hardening and tempering performance, but also high in storage capacity, thereby laying a good foundation for scale production. The left wheel popup box type porous pull-down plug graphite water gap device has the advantages of being controllable in high temperature liquid state slag flow, smooth, free of blocking, safe, reliable, convenient to use and efficient.
Owner:朱兴发

Metal part drying machine

The invention discloses a metal part drying machine. The metal part drying machine comprises a roller, a conveying mechanism arranged on the upper side of the roller and a drying mechanism arranged onthe lower side of the roller. The roller is inclined. A first inlet is arranged on the upper side of the roller, and a first outlet is arranged on the lower side of the roller. The conveying mechanism is inclined. The upper side of the conveying mechanism is provided with a second inlet, and the lower side of the conveying mechanism is provided with a second outlet. The second outlet is located in the first inlet. The conveying mechanism is provided with a high-pressure air spray gun used for conducting pre-blow-drying on cleaned parts. Multiple groups of blocking pieces are arranged in the roller. The drying mechanism is located on the lower side of the roller and arranged at the position of the first outlet. The drying mechanism is a hot air blowing device capable of blowing out high-speed hot air. According to the metal part drying machine, a high-pressure air spray gun is adopted to conduct pre-blow-drying, so that the drying efficiency is improved; a motor directly drives the roller to rotate, the structure is simple, the fault rate is low, and maintenance is convenient; hot air blowing is adopted to dry the surfaces of the metal parts, after drying is completed, cooling is rapid, and collection and storage are facilitated.
Owner:福州云睿自动化设备有限公司

Wellhead anti-freezing far-infrared heating device

The invention relates to the field of wellhead anti-freezing and discloses a wellhead anti-freezing far-infrared heating device. The far-infrared heating device comprises a heating box and an air blower and further comprises an intelligent control cabinet connected with the heating box and the air blower, wherein the air outlet of the air blower is connected with the air inlet of the heating box;a plurality of heating modules are fixed inside the heating box; heating elements are arranged on the heating module; the heating elements are arranged in a staggered manner in the heating box; and anair distributor is arranged at the air inlet of the heating box. According to the far-infrared heating device disclosed by the invention, heat is supplied by the far-infrared heating box, and a silicon controlled pressure-regulating control system is matched to achieve the aims of safety operation and accurate control; the heating elements are distributed in a staggered manner, the air distributor is matched to enable the overall air inlet to be uniform, the pressure loss of cold air is less, the cold air can uniformly pass through the outer walls of the heating elements, and the heat exchange ratio is close to 100%; and the whole equipment has the characteristics of being energy-saving, consumption-reducing, safe, environment-friendly and convenient to operate and has excellent market popularization prospects.
Owner:ZOUCHENG CITY DONGJI NEW THERMAL PIPELINE ANTICORROSION INSULATION

Anti-overcharging additive used for lithium battery electrolyte, and lithium battery electrolyte comprising additive

The invention provides an anti-overcharging additive used for a lithium battery electrolyte, and the lithium battery electrolyte comprising the additive, and relates to the technical field of the lithium ion battery. The anti-overcharging additive mainly consists of biphenyl, phenylcyclohexane, diflurodiphenyl, fluorobenzene and lithium difluorophosphate, wherein the biphenyl, phenylcyclohexane and diflurodiphenyl are used as electrical polymerization type compounds, so that a cell can have corresponding over-charging additives for reaction in different voltage sections in an over-charging process constantly; meanwhile, by virtue of interaction of fluorobenzene and phenylcyclohexane, the electrical polymerization film forming impedance degree of phenylcyclohexane in a low voltage section can be lowered; by adding lithium difluorophosphate, increasing of impedance caused by voltage section micro film forming in normal use of the cell due to addition of the over-charging additives of biphenyl, phenylcyclohexane, diflurodiphenyl, fluorobenzene, and the like can be lowered; and furthermore, the lithium battery electrolyte comprising the anti-overcharging additive can block thermal breakdown possibly caused by overcharging in a mild manner, so that performance degradation of the cell in the overcharging condition can be further avoided.
Owner:BEIJING NAT BATTERY TECH

Preparation method and application of self-assembled core-shell structure positive electrode material

InactiveCN114068900AImprove internal conductivitySignificant rise in temperatureCell electrodesAmphiphileManganese
The invention provides a preparation method of a self-assembled core-shell structure positive electrode material. The preparation method comprises the following steps: (1) preparing a doped nickel-cobalt-manganese core precursor P1; (2) preparing a P1 surface modified self-assembled single-layer film inner core precursor L1; (3) preparing a doped nickel-cobalt-manganese core-shell structure precursor P2; (4) preparing a doped nickel-cobalt-manganese core-shell structure positive electrode material C1; (5) preparing a C1 surface modified self-assembled single-layer film precursor L2; (6) preparing the oxide-coated nickel-cobalt-manganese-doped core-shell structure positive electrode material C2. According to the self-assembly core-shell structure positive electrode material, molecular self-assembly is formed by adopting polar and non-polar solvents, in the non-polar solvent, amphiphilic molecules and polar hydrophilic groups of an organic metal compound are adsorbed on the surfaces of a precursor and positive electrode material particles, non-polar hydrophobic groups are dissolved in the non-polar solvent, the solvents are evaporated, and a compact monomolecular self-assembly layer is formed on the surfaces of the precursor and the positive electrode material particles.
Owner:TIANJIN B&M SCI & TECH

Method and device for recovering volatile organic compound through adsorption-electric heat desorption

The invention relates to a method and a device for recovering volatile organic compound through adsorption-electric heat desorption. The method comprises the following steps of: (1) inputting waste gas containing VOCS (Volatile Organic Chemicals) from the upper part of a shell of an adsorption-electric heat desorption device, wherein the waste gas absorbed and purified by a hollow cylinder containing VOCS is discharged from the lower part of the shell; (2) inputting inert gas into the VOCS-absorbed hollow cylinder, electrifying and heating to warm the hollow cylinder, continuously introducing inert gas which penetrates outward from a hollow passage in the hollow cylinder through the cylinder wall, desorbing the VOCS absorbed on the cylinder wall to obtain the VOCS-containing inert airflow; and (3) condensing the VOCS-containing inert airflow so that the inert airflow is liquefied and flows to a VOCS tank, and the inert gas is discharged from the upper part of the shell of the adsorption-electric heat desorption device for cycle use. The invention has the advantages that the method and device has the characteristics of high efficiency, energy saving, short operation period and capability of recycling the inert gas.
Owner:武汉旭日华环保科技股份有限公司 +2

Water and soil loss preventing and control method for hawthorn tree and codonopsis pilosula three-dimensional cultivation

The invention discloses a water and soil loss preventing and control method for hawthorn tree and codonopsis pilosula three-dimensional cultivation. The method comprises the following steps of (1) land selection and land preparation: selecting river valley regions with mild climate, deep and thick soil layer and flat terrain; (2) ridge forming: forming ridges; flatly raking ridge gaps to form planting lines; then; cutting off ridge surfaces to form ladder ridges; cutting the gaps to form passages; using a black shading net for covering the ladder ridges; (3) fertilizer supplementation: applying rotten straw fertilizer prepared in the step (1) into the planting lines; performing sufficient field drying for 7 to 15 days; (4) hawthorn tree planting; (5) codonopsis pilosula planting; (6) fieldmanagement. The three-dimensional cultivation mode of interplanting the hawthorn tree and codonopsis pilosula is used; the vegetation cover rate in the unit area is greatly increased; important effects are achieved on water and soil loss prevention; the biological study properties of the hawthorn tree and codonopsis pilosula are sufficiently utilized; the relatively good growth of the hawthorn tree and codonopsis pilosula can be ensured; the two staggered green windproof and sand fixing barriers (the upper barrier and the lower barrier) can be formed; the water and the soil can be maintainedto the maximum degree; the soil fertility is maintained.
Owner:焦爱玲

Vertical cabinet type household air conditioner indoor unit and control method thereof

The invention relates to the technical field of air conditioners, and discloses a vertical cabinet type household air conditioner indoor unit which comprises a cabinet body, an evaporator is installed in the cabinet body, and an upper air cooling mechanism, a middle air cooling mechanism and a lower air cooling mechanism are arranged in the cabinet body from top to bottom. The upper air cooling mechanism, the middle air cooling mechanism and the lower air cooling mechanism each comprise a power mechanism and a regulation and control assembly, a main controller is arranged in the cabinet body, the middle air cooling mechanism is connected with a remote controller, and the remote controller is electrically connected with the main controller. The air inlet mechanism and the air outlet mechanism of a traditional air conditioner are arranged to be the upper air cooling mechanism and the lower air cooling mechanism which have the air inlet function and the air outlet function, so that the air conditioner can be intelligently switched among the default state, the far air state and the constant state, and the requirement for rapid cooling of a near area is met; and the cooling speed of a far area is increased, the temperature during heat preservation is increased, and the cooling effect and the use experience of the air conditioner are greatly improved.
Owner:陈春明
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