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172results about How to "Improve work performance" patented technology

Battery pack temperature control device, temperature control method and vehicle

The invention discloses a battery pack temperature control device, which comprises a battery pack module, an air heating module, a heat exchange cooling module, a temperature adjusting medium switching module, a temperature sensing module and a control module, wherein the battery pack module comprises a battery pack body; the air heating module is used for heating air and circulating hot air between the air heating module and the battery pack body through a gas pipeline; the heat exchange cooling module is used for controlling a cooling liquid to circulate through a liquid pipeline between the heat exchange cooling module and the battery pack body, and cooling the cooling liquid; the temperature adjusting medium switching module is used for switching the type of a temperature adjusting medium in the battery pack body; the temperature sensing module is used for detecting an environment temperature at which the battery pack module is; and the control module controls the air heating module, the heat exchange cooling module and the temperature adjusting medium switching module according to the environment temperature. According to the battery pack temperature control device, a battery pack can be adjusted to work at an optimum temperature and the service life of the batteries is prolonged. The invention further discloses a battery pack temperature control method and a vehicle.
Owner:BAIC MOTOR CORP LTD

MEMS (micro-electromechanical systems) device and vacuum encapsulation method of wafer level thereof

The invention relates to an MEMS (micro-electromechanical systems) device and a vacuum encapsulation method of the wafer level thereof. The device is characterized in that wafer level vacuum encapsulation is realized by adopting a silicon-silicon direct bonding technology, a low-resistance silicon wafer is adopted in a silicon structure layer (15) bonded to a silicon substrate, and is directly etched on the silicon layer to form an electrical interconnection lead wire (5); and aluminum electrode (14) is sputtered on an electrical interconnection lead wire bonding area (4) in a lead wire through hole (13) of a silicon nut cap (12). The device has the advantages that a total silicon structure is adopted, and no residual stress exits after bonding, so that the working performance of the device can be greatly improved; low-resistance silicon is utilized as an electrode lead wire, so that damage of high temperature to a metal electrode in the silicon-silicon direct bonding process can be avoided; and the silicon-silicon direct bonding air tightness is extremely good, so that the encapsulation cost is greatly reduced. The method is high in accordance and reliability, and the process is easily implemented.
Owner:EAST CHINA INST OF OPTOELECTRONICS INTEGRATEDDEVICE

Pressing and punching mold for hub reduction gear outer gear ring

ActiveCN102816908AUniform and symmetrical force pointsImprove work performanceFurnace typesHeat treatment furnacesPhysicsMachine press
The invention discloses a pressing and punching mold for a hub reduction gear outer gear ring. The pressing and punching mold for the hub reduction gear outer gear ring is composed of an upper die and a lower die; the lower die consists of a fixed bracket support, a quenching support, an expander, an annular spring ring, a pressing and fixing device, a compression return spring, an operating bearing platform and a cooling cylinder; the parts installed on the operating bearing platform are sequentially the fixed bracket support, the quenching support and the cooling cylinder from inward to outward; the expander and the pressing and fixing device are installed on the upper part of the fixed bracket support; the conical surface of the pressing and fixing device is matched with the conical surface of the expander; a cylinder at the lower part of the pressing and fixing device extends into a central hole of the fixed bracket support through a central hole of the expander; the compression return spring is installed in a cylindrical hole of the lower end of the pressing and fixing device; the compression return spring is supported in a hole of the operating bearing platform; the upper die consists of an upper pressing die and a lower pressing plate and a lower pressing column on a press; the upper pressing die is connected to the lower pressing plate on the press through a bolt; a middle round hole of the upper pressing die and the lower pressing plate is the lower pressing column on the press.
Owner:池勇

Air-pressure-adjustable type oil gas suspension system, air pressure adjusting method thereof and engineering vehicle

The invention discloses an air-pressure-adjustable type oil gas suspension system, which comprises an oil gas suspension mechanism which is provided with inflatable energy accumulators (16 and 17) for reducing vibration, and also comprises an air pressure adjusting unit, wherein the air pressure adjusting unit comprises an air chamber serving as an air source, and the volume of the air chamber can be adjusted; inflation openings of the inflatable energy accumulators (16 and 17) for reducing the vibration are respectively connected onto the air chamber through respective branch air channels (8); and a branch air channel on-off valve (18) is arranged on each branch air channel (8). Besides, the invention also discloses an air pressure adjusting method for the air-pressure-adjustable type oil gas suspension system and an engineering vehicle. The air-pressure-adjustable type oil gas suspension system has the advantages that through additionally arranging the air pressure adjusting unit in the oil gas suspension mechanism, when the air pressure drops due to leakage and the like of the inflatable energy accumulators for reducing the vibration of the oil gas suspension mechanism, the energy accumulators can be conveniently inflated through the air pressure adjusting unit to increase the air pressure, so the working performance of the oil gas suspension mechanism is relatively effectively improved.
Owner:ZOOMLION HEAVY IND CO LTD

Variable-structure exhaust nozzle of rocket based combined cycle engine

InactiveCN103790735AImprove work performanceNo lossRocket engine plantsWork performanceDiagnostic Radiology Modality
The invention discloses a variable-structure exhaust nozzle of a rocket based combined cycle engine. An inner flow field of the exhaust nozzle is in an overexpansion state under an injection modality, the inner flow field of the exhaust nozzle is in an under-expansion state under an under-combustion/super-combustion state, an upper cover plate is driven by a motor, and suction slotted holes in a rear body of an aircraft is made to be in an opened or closed state. The suction slotted holes in the upper wall face of the a spray pipe are opened when the engine works at a non-design point, the suction slotted holes in the wall face of the spray pipe are closed when the engine works at a design point, the work performance of the spray pipe under the injection modality is improved, and meanwhile it is guaranteed that the work performance of the spray pipe under the under-combustion/super-combustion modality is not reduced. The variable-structure exhaust nozzle is strong in expandability, and the suction slotted holes with different section areas can be designed according to the actual geometric structures, the work envelope curve and the work performance needs of the exhaust nozzle. The suction slotted holes are distributed according to the actual structural size of the exhaust nozzle, and the work performance of the exhaust nozzle under the non-design point is improved.
Owner:NORTHWESTERN POLYTECHNICAL UNIV

Multi-criterion radar emission signal design method based on phase modulation

The invention discloses a multi-criterion radar emission signal design method based on phase modulation. The multi-criterion radar emission signal design method based on the phase modulation mainly solves the problems that an existing technical signal is single in optimization criterion and ideal and simple in environmental model. The realization process of the multi-criterion radar emission signal design method based on the phase modulation includes the following steps: (1) respectively conducting frequency domain sampling on power spectra of a radar target, clutter and noise, (2) obtaining a power spectral density vector of an optimal signal with the maximized output signal-to-noise ratio as a criterion, (3) obtaining a power spectral density vector of the optimal signal with the maximized mutual information between the radar received echo and the target as a criterion, (4) building a multi-criterion signal optimization function in a weighting mode after conducting dimension unifying on the criterion of the maximized output signal-to-noise ratio and the criterion of the maximized mutual information between the radar received echo and the target, and (5) solving a radar phase coding signal through iteration to make the multi-criterion signal optimization function smallest. The multi-criterion radar emission signal design method based on the phase modulation takes effects of the clutter into consideration, and is more flexible in signal design, capable of meeting working requirements of a multitask radar system and favorable for promoting working performance of the whole system of a radar.
Owner:XIDIAN UNIV

Topological insulator composite film with high spin polarized electron channel and preparation thereof

The invention discloses a topological insulator heterogeneous composite film with a high spin polarized electron transport channel, and the topological insulator heterogeneous composite film comprises a 6H-SiC (0001) or SrTiO3 substrate and topological insulator 6QLBi2Se3 and ordinary semiconductor 3QLSb2S3 which are in order grown on the substrate by a molecular beam epitaxy technology in an ultra high vacuum system. Through coverage of the surface of topological insulator Bi2Se3 with the Sb2S3, the electrical properties of the composite film are significantly improved compared with that of a pure Bi2Se3 film; the Dirac point is changed from 0.1eV less than valence-band maximum to 0.09eV higher than valence-band maximum, Fermi velocity is improved from 1.15 eV. Angstrom to 1.61eV. Angstrom, spin polarization rate is also increased from 0.65 to 0.91; at the same time, the width of the spin polarized electron transport channel is improved from about 1nm to 3nm, and can be further expanded according to the needs by increasing of the Sb2S3 covering layer thickness; and the Sb2S3 covering layer can reduce influence on the spin polarized electron flow transport channel due to surface contamination such as oxidation and the like.
Owner:NANJING UNIV OF SCI & TECH

Photon counting-based three-dimensional image signal-noise separation and mixed regularization reconstruction method

In order to solve the technical problem that working performance of photo counting detector-adopted three-dimensional imaging laser radars is reduced under strong noise environments, the invention provides a photo counting-based three-dimensional image signal-noise separation and mixed regularization reconstruction method. The method comprises the following steps of: determining a signal cluster set on each pixel by adoption of a sliding time window method and filtering noise counting except time windows of the signal cluster sets; if both signal counting and noise counting do not exist on a certain pixel, constructing a superpixel by replacing a time accumulation process by space accumulation by means of counting information on a neighborhood pixel, and filtering the noise by adoption ofthe sliding tine window method; and finally, reprocessing a preliminary noise-filtered image by utilizing a total variation regular item, wavelet regular item and contourlet regular item combined mixed regularization method, so as to finally obtain a high-quality three-dimensional image. According to the method, signal photos can be effectively separated from noises under strong background noises,so that the rapid and accurate reconstruction of target three-dimensional images is realized.
Owner:XI'AN INST OF OPTICS & FINE MECHANICS - CHINESE ACAD OF SCI

Intelligent adjusting method for temperature loads of arched concrete dam

InactiveCN105421281AReduce temperature stressImprove work performanceHydraulic engineering apparatusArch damsWater pipeEngineering
The invention discloses an intelligent adjusting method for temperature loads of an arched concrete dam. The method is characterized by comprising the following steps that the average temperature load of a dam body in every month is calculated; an allowed temperature load is determined, and temperature load increments, needing to be reduced, at different times and different portions are obtained; according to the allowed temperature load and the temperature load increments needing to be reduced, allowed temperatures at different times and different portions of the dam are inversely calculated; according to temperature values, needing to be reached through control, at different times and different portions and the temperature distribution condition of upstream reservoir water, by considering temperature control requirements during the operation period, the arrangement of cooling water pipes during the construction period is optimized, the cooling water pipes are reserved, and water passing temperatures and flows of the water pipes during the operation period are determined; a water fetching elevation range is determined; and water passes according to the determined water fetching elevation range, and temperature control is conducted by controlling the flows in the water pipes. According to the intelligent adjusting method, part of the cooling water pipes in the construction period are reserved, intelligent water passing is carried out during the operation period to control the temperature of the dam body, the temperature loads are reduced, and the working condition of the dam body is improved; safety stock is increased, and durability is improved.
Owner:CHINA INST OF WATER RESOURCES & HYDROPOWER RES

Chloride ion adsorption agent for reinforced concrete structure and preparation method thereof

The invention discloses a chloride ion adsorption agent for a reinforced concrete structure and a preparation method thereof. The adsorption agent is prepared from the following ingredients in percentage by mass: 20 to 30 percent of cenosphere, 11 to 18 percent of mesoporous molecular sieves, 7 to 14 percent of nanometer SiO2, 4 to 8 percent of regenerated active carbon, 5 to 15 percent of calcium aluminate powder, 15 to 25 percent of calcined kaolin and 12 to 20 percent of aluminoferic cement clinkers. The chloride ion adsorption agent has the advantages that all ingredients are scientifically matched; the synergistic effect is achieved; harmful ions such as chloride ions are subjected to physical absorption by a large area of the chloride ion adsorption agent; the ingredients and the chloride ions form chemical bonds; Friedel salt is generated; the content of free chloride ions is reduced, so that the corrosion on steel bars in the reinforced concrete structure is reduced; through the physical filling effect, the reinforced concrete compactness is improved, and the harmful ions such as chloride ions are prevented from entering the inside of concrete; gel substances are generated through the volcanic ash effect, and the space originally occupied by water is filled, so that the compactness and the strength of the reinforced concrete are improved.
Owner:北京宝辰联合科技股份有限公司

Organic light-emitting display panel and display device

The invention discloses an organic light-emitting display panel and a display device, and belongs to the technical field of display. The display panel comprises a display area and a non-display area.The display panel comprises a plurality of organic light-emitting diodes, and each organic light-emitting diode comprises an anode, a light-emitting material part, and a cathode. The cathodes are arranged on the whole plane, and cover the display region and extend to the non-display region. The non-display region comprises at least one conductive part, and the conductive part receives a fixed voltage. At least some conductive parts are overlapped with the cathodes in an insulated manner in a direction perpendicular to the organic light-emitting display panel, and the conductive parts are insulated with the anodes. According to the invention, the organic light-emitting display panel is provided with the conductive parts, and the conductive parts are overlapped with the cathodes so as to form a storage capacitor, thereby enabling the electric potentials of the cathodes not to change abruptly. Compared with the prior art, the electric potentials of the cathodes remain relatively stable, thereby facilitating the improvement of the working performances of the plurality of organic light-emitting diodes, reducing the impact on an electric signal of a touch electrode from the instability of the electric potentials of the cathodes, and improving the touch performances.
Owner:SHANGHAI TIANMA MICRO ELECTRONICS CO LTD

Thermo-motive water cycling system

The invention relates to a thermo-motive water cycling system and in particular relates to a thermo-motive water-cycling system of electric heating water heating cushions (comprising a mattress, a cushion, a floor mat, a sofa cushion, a foot pad, a bustle, a pillow and the like), water heating bedclothes, heaters and the like and aims at providing a thermo-motive water-cycling system capable of effectively discharging gas which can not be reverted to water without an evaporation pipe. The first scheme adopted by the invention is as follows: a water storage tank is communicated with a heating cylinder through a check valve; the heating cylinder is communicated with a water channel through a water outlet connecting pipe; the water channel is communicated with the water storage tank through a water inlet connecting pipe; and the heating cylinder is provided with a steam discharge pipe which is communicated with the water storage tank. The second scheme adopted by the invention is as follows: a water storage tank is communicated with a heating cylinder through a check valve; the heating cylinder and a steam chamber are communicated with one end of a water outlet connecting pipe; the other end of the water outlet connecting pipe is communicated with a water channel; the water channel is communicated with the water storage tank through a water inlet connecting pipe; and the steam chamber is provided with a steam discharge pipe which is communicated with the water storage tank. Because the structure is adopted, the system is simple in structure and has a better operation effect, and the product provided by the invention is more competitive in markets.
Owner:王彤宇
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