198results about How to "Wide range of regulation" patented technology

The present invention relates to a nitrogen-doped porous carbon material for a lithium-air battery positive electrode, wherein the nitrogen-doped porous carbon material has an interconnected graded pore structure, N is uniformly doped in the C skeleton, N accounts for 0.2-15% of the carbon material atomic ratio, the graded pores comprise mass transfer pores and deposition holes, the deposition holes account for 40-95% of the total pore volume, and the mass transfer pores account for 4-55% of the total pore volume. According to the present invention, with application of the carbon material as the lithium-air battery electrode material, the space utilization rate of the carbon material during the charge-discharge process can be increased at a maximum, and the energy density and the power density of the lithium-air battery can be effectively increased; and the preparation process is simple, the material source is wide, the pore structure of the graded pore carbon material can be regulated, the regulation manner is diverse, and the nitrogen doping manner is easily achieved.

The invention relates to an application of a porous carbon material with a grading pore structure in a lithium-air cell anode, and is characterized in that the carbon material has mutually communicated grading pore structure distribution which has a mesoporous structure for depositing the discharge products and a macroporous structure suitable for transmission of oxygen and an electrolyte. When the carbon material is taken as a material of the lithium-air cell anode, the space utilization rate of carbon material can be increased at maximum limitation during a charge and discharge process, specific discharge capacity, voltage platform and multiplying power discharge capability of the cell can be effectively increased, so that the energy density and power density of the lithium-air cell can be increased. The porous carbon material has the advantages that the preparation technology is simple, the material source is wide, the grading pore carbon material pore structure enables regulation and control, the regulation and control modes are various, and the doping of metal / metal oxide can be easily and simultaneously realized.

The invention discloses a multi-element perovskite material, as well as preparation and application thereof. The multi-element perovskite material is multi-element fully-inorganic metal non-lead halide salt and has a perovskite structure; the chemical formula of the multi-element perovskite meets: (the formula is shown in the description), wherein x is greater than or equal to 0 and less than or equal to 1, y is greater than or equal to 0 and less than or equal to 1, A is Cs<+>, B1, B2, B3 and B4 are Na<+>, Ag<+>, In<3+> and Bi<3+> respectively, and X is a halogen element. Through improvement on the varieties and proportion of the key chemical elements of the perovskite material, being compared with the prior art, the multi-element perovskite material can effectively solve the problems that the conventional multi-element perovskite material has few varieties, and is difficult to regulate and control, and high in environmental pollution.

The invention discloses an air conditioning unit capable of regulating the temperature and the humidity. The input end of a compressor is communicated with the outflow end of a refrigerant storage tank. The output end of the compressor is communicated with an outdoor heat exchanger or an indoor heat exchanger. The air conditioning unit further comprises a humidifier, an electric heater, a fresh air inlet, a fresh air electric control valve, an outdoor temperature and humidity sensor, an indoor temperature and humidity sensor and a control unit. The control unit is electrically connected with the outdoor temperature and humidity sensor, the indoor temperature and humidity sensor, the electric heater, the fresh air electric control valve, a controller of the humidifier, a motor of the compressor, a motor of an outdoor fan and a motor of an indoor fan. No matter what the states of the indoor temperature and humidity and the outdoor temperature and humidity are, the indoor temperature can reach the set value range rapidly in the first place by preferentially regulating the indoor temperature through the air conditioning unit. Fresh air is introduced in the temperature and humidity regulating process, the energy consumption is reduced through outdoor effective influences, and the four functions including refrigerating, heating, dehumidifying and humidifying are achieved in the most economical and most energy-saving mode.

The invention discloses a battery temperature control system for vehicles. The battery temperature control system comprises a water pump, a radiator and a battery pack that can are connected in series in sequence to form a cooling loop, wherein a liquid-liquid heat exchanger with an additional heating apparatus can be arranged between the radiator and the battery pack; when the battery temperature control system is in use, the radiator controls the radiating power according to the instantaneous temperatures of the water inlet and water outlet of the radiator so as to cool the battery pack; and a battery controller also can control the heating apparatus according to the instantaneous temperature of the battery pack to heat the cooling water flowing through the liquid-liquid heat exchanger so as to further heat the battery pack. Due to the design, the battery temperature control system is relatively high in regulation and control capability, and capable of heating and cooling the battery pack and realizing temperature control in time, and relatively high in energy utilization ratio.

The invention relates to a preparation method for FeAl intermetallic compound porous material, which belongs to the field of inorganic porous material. The technical problem solved by the invention is to provide the preparation method for the FeAl intermetallic compound porous material with a pore structure having higher controllability. The method comprises the following steps: firstly preparing a porous supporting body and composite slurry; then coating the surface of the porous supporting body with the composite slurry; and sintering and cooling down the porous supporting body in the vacuum atmosphere to obtain the FeAl intermetallic compound porous material. The method capable of regulating the porous structure of the porous material is characterized by a short flow, low cost and low energy consumption. The porous material has excellent resistance to high temperature sulfurization, resistance to high temperature oxidation and thermal shock, good mechanical performance at a high temperature, good processability and solderability, and the like. Therefore, the FeAl intermetallic compound porous material has bright application prospect.

The invention relates to the technical field of photoelectric detectors, in particular to a preparation method of a quantum dot structure photoelectric detector with a highly-doped substrate covered with a dielectric layer. The method includes steps: forming a two-dimensional material layer on the dielectric layer; coating the surface of the two-dimensional material layer with quantum dot materiallayer solution to form a quantum dot material layer; making a graphical transparent conductive film on the quantum dot material layer to complete preparation of the detector. The voltage assisted quantum dot structure photoelectric detector comprises the highly-doped substrate, the dielectric layer, the two-dimensional material layer, the quantum dot material layer and the transparent conductivefilm sequentially from bottom to top. A source electrode and a drain electrode are formed on the two-dimensional material layer which contacts with the quantum dot material layer to form a built-in electric field, and an adjustable modulation voltage identical to the built-in electric field in direction is applied between the transparent conductive film and the highly-doped substrate. Response speed and photoelectric current gain of the detector can be increased, and performances of the detector are remarkably improved.

The invention relates to a zoom micro lens based on a piezoelectric inverse effect, belonging to the technical field of optical components. The zoom micro lens comprises a first glass sheet, a piezoelectric ceramic ring and a second glass sheet, wherein a circular hole is formed in the center of the second glass sheet, and an organic thin film is covered on the second glass sheet; the piezoelectric ceramic ring is clamped between the first glass sheet and the second glass sheet; and transparent liquid is filled in an inner space formed by the sealing of the first glass sheet, the piezoelectric ceramic ring and the second glass sheet. The stretching and the shrinkage are caused to piezoelectric ceramic under the action of an electric field by feeding voltage to the piezoelectric ceramic by virtue of the piezoelectric inverse effect, so that the surface shape of the micro lens is driven to change and the regulate function of the focal length of the micro lens is realized. A focal-length-adjustable micro lens provided by the invention has multiple superiorities such as simple structure, simplicity and convenience in design and process production, easiness in realizing of array structure, fast regulation and control speeds, large regulation and control ranges and the like, and has wide application foregrounds in micro-optic systems and micro-optic electromechanical systems.

The invention relates to a nitrogen-doped porous carbon material used for anode of a lithium-air cell, which has a mutually communicated graded pore structure, N is uniformly doped in a C frame, wherein N accounts for 0.2-15% of carbon material, the graded pore comprises a mass transfer pore and a deposition pore, the pore volume of the deposition pore accounts for 40-95% of total pore volume, and the pore volume of the mass transfer pore accounts for 4-55% of total pore volume. The carbon material as the lithium-air cell material can greatly increase the space utilization rate of the carbon material during a charge and discharge process at maximum limit, so that lithium-air cell energy density and power density can be effectively increased. The nitrogen-doped porous carbon material used for anode of lithium-air cell has the advantages that the preparation technology is simple, the material source is wide, the pore structure of the graded aperture carbon material enables regulation and control, and the regulation and control modes are various, and the nitrogen doping mode is easy to realize.

The invention discloses a preparation method of a strawberry-shaped organic-inorganic nanometer composite microsphere. The preparation method comprises the following steps: 1, adding a silica colloid to a styrene acrylate copolymer latex drop by drop under stirring, and adding an acid drop by drop to adjust the pH value of the obtained material to 4.5-5.7 to form a blending system; 2, heating theblending system to 60-100DEG C under stirring, and continuously stirring for 0.5-3.0h under the shearing effect to obtain an organic-inorganic nanometer composite latex system; 3, cooling the organic-inorganic nanometer composite latex system, and adding an alkali drop by drop to adjust the pH value of the latex system to 10-12 to obtain the firmly-combined stably-dispersed strawberry-shaped organic-inorganic nanometer composite microsphere with the surface embedded with small silica particles. The preparation method has the advantages of wide resource and easy availableness of raw materials,simple preparation technology, good latex particle controllability, and wide adjustable range of the particle size of the composite microsphere. The strawberry-shaped organic-inorganic nanometer composite microsphere prepared with the method, which has the advantages of high composite degree, good structure firmness and stable placement, can be applied to the fields of coatings, rubbers, plastics, the biology and the like.

The invention discloses a dynamic column vector light field generating device and method based on an optical heterodyne interference method. High-speed continuous rotation of the polarization direction of the linearly polarized Gaussian light is realized through an optical heterodyne interference method, and the linearly polarized Gaussian light with high-speed rotation of the polarization direction is further converted into dynamic column vector polarized light with high-speed conversion; the dynamic regulation and control speed of the column vector light field can be improved by 6 orders ofmagnitudes; the whole device is not provided with a mechanical motion assembly, and a generated dynamic column vector light field is stable and reliable; the generated high-speed dynamic column vectorlight field can be applied to the fields of optical communication, optical sensing, laser processing, optical capture, optical super-resolution and the like, and the time consumed for regulating andcontrolling the light field in application can be greatly saved; the device has the advantages of continuous polarization regulation, high stability, large regulation range and high response speed. Ahigh-speed switching dynamic column vector light field is generated; the change frequency of the column vector light field is changed by changing the frequency of a radio frequency signal for drivingthe acoustic optical modulator.

The invention discloses a logistics robot capable of achieving quick responding and balancing and an adjusting and control method of the logistics robot. The logistics robot can achieve quick responding, automatically control load balancing and achieve safe transporting. The logistics robot comprises a vehicle-mounted device, a data acquisition device, a central processing unit and an adjusting balance device. The data acquisition device, the central processing unit and the adjusting balance device are all mounted on the vehicle-mounted device. The vehicle-mounted device is responsible for bearing loads of the logistics robot and achieving the function of free moving. The data acquisition device is used for collecting load distribution condition data and robot motion state and posture datato be fed back to the central processing unit, the central processing unit is used for processing the data and outputting adjusting signals, and the balance device quickly responds to adjusting to stabilize loads. Meanwhile, the central processing unit judges the critical accelerated speed of cargoes in the instable state, the critical accelerated speed is taken as the accelerated speed limitingcondition to carry out accelerated speed constraining on a logistics car, the problem that loads of the logistics car are instable is solved, and it is ensured that cargoes carried by the logistics robot are safe.

The invention discloses a method for preparing a multilevel structure with a compound period through variable angle exposure and application, belongs to the technical field of laser processing, and particularly relates to preparation of a micrometer-nanometer cross-scale multilevel structure with a compound period through double-beam interference. The compound period and the multilevel micrometer-nanometer structure are obtained at the same time through the changing of exposure angles of double-beam interference, and a super-hydrophobic surface and a structural color for imitating insect wings are obtained through the micrometer-nanometer cross-scale multilevel structure and the compound period. According to the method, the multilevel structure is obtained through only double-beam interference processing technology by adopting variable angle exposure, the limitation that the prior art is required to be combined with a plurality of methods to prepare the multilevel structure is broken, and the method has the advantages of high expansibility, high yield, high efficiency and the like.

The invention relates to a method for regulating the ratio of Rashba and Dresselhaus spin-orbit coupling for a semiconductor quantum well material. According to the method, an undoped high-quality semiconductor quantum well material is selected, light whose energy is higher than that of the band gap of the semiconductor quantum well is used for irradiating a sample, and meanwhile, the temperature of the semiconductor quantum well is changed, so that the ratio of the Rashba and Dresselhaus spin-orbit coupling in the quantum well is regulated. By means of the method, the ratio of Rashba and Dresselhaus spin-orbit coupling is regulated through the effect that the number of photoproduced excitons in the semiconductor quantum well is changed along with the temperature as well as the control effect of ionized excitons on a built-in electric field, the method is simple and easy, and the regulating effect is significant.

A ZSM-5 molecular sieve, a preparing method thereof and applications of the molecular sieve are provided. The ZSM-5 molecular sieve is prepared through an amine-free system. A silica-alumina ratio of the ZSM-5 molecular sieve is 40-200. The ZSM-5 molecular sieve is prepared by adopting a nanometer thin-layer ZSM-5 molecular sieve having a high silica-alumina ratio as a crystal seed with the mole ratio of raw materials meeting a condition that the mole ratio of SiO2 to Al2O3 is 100:(0.04-2). Compared with molecular sieves synthesized under traditional template-free conditions, the ZSM-5 molecular sieve synthesized by the method is a molecular sieve having a high silica-alumina ratio (higher than 40). The silica-alumina ratio of the prepared flake ZSM-5 molecular sieve is adjustable in a large range (40-200).

A cycle carrier support bar has a cycle end grip device (4) at a first end of a tubular spacer bar (2) and a carrier end grip device (5) at the second end. The cycle end grip device can be a flexible strap (42) with a tensioning lever (43) and a key-operated lock (6). The carrier end grip device (5) can be a rigid clamp with opposed jaws (51,52) connected at a pivot (54) and closed releasably by a latch mechanism operated by a longitudinally-slidable carrier shuttle (55) carrying a detent of the latch. The latch is released to open the carrier end grip device (5) by pulling on the wire of a Bowden cable (8) which extends along the middle of the tubular spacer bar, and has an actuating lever (7) exposed through a window in the cycle end grip (4), so as to be accessible only when the cycle end grip (4) is open.

The invention discloses a preparation method of gold nanorods with different length-diameter ratios. The preparation method comprises the following specific steps that 1, a sodium borohydride reducing agent is added into a mixed solution composed of stearyl trimethyl ammoium bromide and chloroauric acid for reacting, and a gold nanoseed solution is prepared; 2, after a stearyl trimethyl ammoium bromide solution, a chloroauric acid solution and a silver nitrate solution are mixed, a glucose solution is added, the gold nanoseed solution obtained in the step 1 is poured into the mixed solution, and the gold nanorods with different length-diameter ratios are prepared by singly regulating and controlling the adding amount of silver nitrate; 3, centrifugal separation is conducted through a temperature difference centrifugation method, and gold nanorod sol is obtained. According to the preparation method, operation is easy, and the regulating and controlling range is wide; the obtained gold nanorods with different length-diameter ratios have the advantages of being good in dispersibility and uniform in particle size and can be widely applied to the fields of biosensing, surface-enhanced Raman scattering and the like.

The invention discloses a preparation method of metal / non-metal composite film of a vertical array structure. The method comprises the steps that the metal / non-metal composite structure film is prepared through a radio frequency magnetron sputtering codeposition technology; and large-scale regulation and control over the size and volume ratio of a metal array is achieved by strictly controlling non-metal target / metal target power ratio conditions in a technological process. The technological process is environmentally friendly, simple, and easy to implement; metal / non-metal vertical array structures of different forms, sizes and crystalline states can be obtained under the room temperature without needing the help of templates and without any special requirement for a base, the preparationmethod has good application potentials and prospects in the fields of optical devices, catalyzation, precision resistance film, memory and display devices and the like, and a new technological concept is provided for industrial application of the composite film of the vertical array structure.

The invention relates to an ion bombardment preparation method for a self-organizing nano-structure with a saw-toothed outline. The self-organizing nano-structure with the certainly ordered saw-toothed outline and a period of about 100 nanometers can be directly inductively generated on the surface of smooth fused quartz through the combination of argon ion beam bombardment and simultaneous impurity deposition, and thus the method is a simple and economical self-organizing nano-structure manufacturing technology that efficiently generates a quasi-blazed grating structure with the hundred-nanometer scale period. According to the method provided by the invention, the feature size of the acquired nano-structure can be controlled through adjusting the parameters (such as the bombardment time and the incident angle of the ion beam) of the ion beam when in ion bombardment. The invention provides a preferred range of ion beam parameter adjustment and a preferred principle of impurity target material. The method provided by the invention is also applicable to various solid materials such as a monocrystal silicon sample, and the ion beam can be one kind of inert gas ions from helium, neon,argon, krypton and xenon.

The invention relates to a polyetheretherketone hollow fiber preparation method and belongs to the technical field of organic fiber preparation. The problem that polyetheretherketone fibers prepared by a hollow fiber preparation method in the prior art is mainly to be solved. The polyetheretherketone hollow fiber preparation method includes subjecting special spinning-class polyetheretherketone to melt extrusion by a screw in an extruder, using a melt dosing pump for controlling the discharge amount, filtering melts through a filtering system of a component, and forming polyetheretherketone hollow fiber strips through a hollow spinneret plate; drafting the polyetheretherketone hollow fiber strips, cooling according to different cooling modes, and using a winding device for collecting as-spun fibers; guiding the as-spun fibers into a hot-drawing sizing device so as to obtain polyetheretherketone hollow fibers. The polyetheretherketone hollow fiber preparation method is simple, convenient and high in universality. The polyetheretherketone hollow fibers prepared by the preparation method have the advantages of high quality stability, high strength, high tenacity, high uniformity, excellent wear resistance and the like, and can be used for wear-resisting fabrics, thermal protection, lightweight materials and the like, thereby being quite promising in application prospect.

A modular multilevel converter with multi-port DC power flow control includes a modular multilevel converter topology and a DC power flow controller, wherein an input terminal of the DC power flow controller is connected in series to uppermost submodules of upper arms of the modular multilevel converter topology, and with power transfer and energy interaction between the modular multilevel converter topology and an AC power grid, a converter station or a solid state transformer based on the modular multilevel converter topology has a function of direct current power flow control. The output terminal of the DC power flow controller adopts DC / DC converters to regulate the output voltage, and a plurality of DC / DC converters share a common DC bus with the ports connected with different DC outlet lines, thereby providing a plurality of flexible and controllable DC ports.

The invention provides a control method, a control circuit, a backlight integration circuit and terminal equipment. The control method comprises the following steps of acquiring current brightness of a backlight light source; if the current brightness is greater than preset brightness, making a largest limitation current of a backlight driving circuit increase to a first limitation current and adjusting a duty ratio of a pulse width modulation circuit so that the current brightness matches with the first limitation current; if the current brightness is less than or equal to the preset brightness, making the largest limitation current of the backlight driving circuit reduce to a second limitation current and adjusting the duty ratio of the pulse width modulation circuit so that the current brightness matches with the second limitation current. In embodiments of the invention, through comparing the current brightness of the backlight light source to the preset brightness, according o a comparison result, the largest limitation current of the backlight driving circuit is increased or reduced; simultaneously, the adjusted largest limitation current is used to adjust the duty ratio, the current is maintained to be stable so that the brightness of the backlight light source possesses a large regulation and control scope.

The present invention relates to an application of a graded pore structure porous carbon material in a lithium-air battery. The porous carbon material is characterized in that the porous carbon material has interconnected graded pore structure distribution, wherein the interconnected graded pore structure distribution comprises a mesopore structure for discharge product deposition and a macropore structure for oxygen and electrolyte transmission. According to the present invention, with application of the carbon material as the lithium-air battery electrode material, the space utilization rate of the carbon material during the charge-discharge process can be increased at a maximum, and the discharge specific capacity, the voltage platform and the rate discharge capability of the battery can be effectively increased so as to increase the energy density and the power density of the lithium-air battery; and the preparation process is simple, the material source is wide, the pore structure of the graded pore carbon material can be regulated, the regulation manner is diverse, and the metal / metal oxide doping can be concurrently and easily achieved.

The controllable composite type reactor includes following parts: main iron core; AC main winding wound on the main iron core; control iron core; DC control winding wound on the control iron core. Characters are that control iron core is a hollow cylindrical iron core body, and framework type main iron core with opening is embedded on up and down planes of the cylindrical iron core body so as to constitute main skeleton of star shaped iron core; the control iron core includes control winding wound on inside and outside the cylindrical body; main winding is wound on core body of main iron core paralleled to cylindrical body of cylindrical control iron core in radial. Changing magnitude of current of the control winding, the reactor can change magnetic permeability of cylindrical iron core in axial direction. Thus, the reactor changes reactance value of AC reactor so as to reach purpose of adjusting reactor continuously and smoothly.

The invention discloses a woad triploid breeding method with obvious rhizome weight increase.The method comprises the following steps of germinating seeds; conducting gravity field mutagenizing; conducting directional subculture breeding; collecting obtained woad seeds to be subjected to seed germination, obtaining woad buds and dividing the woad buds into two groups A and B, conducting gamma ray source irradiation treatment on the buds in the group A, using a colchicine solution for performing chromosome doubling treatment on the buds in the group A, and screening out tetraploid buds; obtaining diploid buds in the group B; conducting transplanting treatment on the buds in the group A and the buds in the group B and then obtaining group A tetraploid plants and group B diploid plants respectively; adopting the group A tetraploid plants as a female parent, adopting the group B diploid plants as a male parent, conducting sexual hybridization, and obtaining woad triploid plants.The obtained triploid plants have the dual advantages of polyploids and hybrids and are highly sterile, the hybrid vigor is fixed, the genetic characters can be continuously inherited through a maintainer line, and the problem of posterity segregation is avoided.

The invention discloses an aperture adjustable composite inorganic oxide nanopore fiber with communication pores and a single-spray head electro-spinning preparation method thereof, and belongs to the technical field of preparation of inorganic oxide nanopore fibers. The composite inorganic oxide nanopore fiber is controllable in aperture distribution, pore passages are communicated with one another, and the composite inorganic oxide nanopore fiber comprises a mesoporous material, a mesoporous-macroporous material and a microporous-mesoporous-macroporous material. The method is used for preparing the target product by the single-spray head electro-spinning technology in one step based on an inorganic ester hydrolytic polycondensation spontaneous pore formation principle; in the method, a sacrifice pore-forming agent or a microemulsion is not used, and an electro-spinning device with the special design of multiple spray heads or co-axis and the like are also not used. The composite inorganic oxide nanopore fiber prepared by the method is high in controllability of apertures, high in community of pore passages, high in yield and suitable for industrial production.

The invention provides a bidirectional compression die, which comprises a moving template, a moving die fixing plate, a fixed template, a fixed die fixing plate, a die cavity block component and a compression block component, wherein the die cavity block component comprises longitudinal die cavity blocks and transverse die cavity blocks; the compression block component comprises a longitudinal compression block and a transverse compression block; and the fixed die fixing plate, the die cavity block component and the compression block component form an enclosed die cavity, and the longitudinal die cavity blocks, the longitudinal compression block, the transverse die cavity blocks and the transverse compression block longitudinally and transversely move relative to each other to change the volume of the die cavity. The invention also provides a bidirectional compression method. According to the bidirectional compression method, the longitudinal die cavity blocks, the longitudinal compression block, the transverse die cavity blocks and the transverse compression block are synchronously operated to change the volume of the die cavity both longitudinally and transversely or only longitudinally or transversely. The volume of the die cavity can be changed in longitudinal and transverse two dimensions simultaneously, and unidirectional or bidirectional compression can be realized according to needs to meet the higher compression requirements of a product.

An office chair mechanism provided with a device for adjusting the swivel force includes a fixed part secured to the chair base, movable parts secured to the seating portion and to the back rest (22) of the chair, and an elastic element which opposes the weight of the chair user, a lever having contact surfaces which interact with said fixed part by means of a fulcrum having a movable contact element interposed between the end acting on the elastic element and the other end to which the movable parts are pivoted, and an adjustment element which causes only the movable contact element to move but without modifying the position of the elastic element and of the lever.

The invention discloses an experimental platform for measuring the contact temperature of a gear tooth surface, which belongs to the field of mechanical engineering. The experimental platform comprises a test bench base, a main control cabinet, a gear box, a transmission belt protection cover, a drive motor, a drive shaft system, a driven shaft system, an electric brake device and a transmission belt. The gearbox comprises a drive gear and three displacement driven gears. Under the drive of the drive motor, the temperature of the working gear tooth surface under different working conditions can be monitored in real time by temperature sensors arranged inside gear teeth of the displacement driven gears. According to the invention, the experimental platform can effectively reflect the variation law of the tooth surface contact temperature of the gears during an actual transmission process; and an experimental support is provided for solving the problems of gear tooth deformation caused by the tooth surface temperature change, rigidity change, tooth surface gluing and the like during the gear transmission process.