24results about How to "Small performance degradation" patented technology

The application discloses a kind of air-cooled fuel cell humidification systems and its control method, solve the problem of air-cooled stack humidification system structure complex, uneven gas intake in prior art.The application includes humidification cavity with water injection port and gas outlet;First homogenizing cavity is used to flow through gas and guide;Second homogenizing cavity is arranged on the first homogenizing cavity;Fan is arranged on the first homogenizing cavity for conveying gas into the first homogenizing cavity;Moisture guide mechanism one end is connected with gas outlet, the other end is connected with the first homogenizing cavity;Air-cooled stack is arranged on the second homogenizing cavity gas outlet end;Controller is connected with fan, moisture guide mechanism and air-cooled stack respectively.The application is controlled by fan, moisture guide mechanism, air-cooled stack and controller cooperation, controller controls the operating power of fan and moisture guide mechanism according to the power of air-cooled stack, to control the humidification amount of air-cooled stack, reduce the performance attenuation of air-cooled stack, improve the stability of air-cooled stack.

This application provides a self-healing polyurethane material, its preparation method, and its applications, relating to the field of polymer materials technology. The material uses a polyurethane matrix constructed from polyols and polyisocyanates, and introduces aromatic polyaldehyde compounds to form reversible dynamic bond structures with hydrazine compounds, thereby endowing the material with excellent self-healing properties. By controlling the type of chain extender and the melt blending process conditions, the material can achieve crack healing and restore mechanical properties after damage, while also possessing good flexibility, processability, and stability. The preparation process of this application is simple and the conditions are mild. The resulting material can be widely used in coatings, seals, and elastomers, significantly improving material service life and reliability.

The invention relates to the technical field of membrane separation, in particular to a functional group regulated covalent organic framework (COF) membrane and a preparation method thereof, and relates to application of the membrane in selective separation of monovalent cations. The preparation method comprises the following steps: condensing a polyaldehyde monomer and aromatic diamine with different side chain substitutions on an interface through oil-water-oil three-phase interface micro-fluidic dripping to generate a two-dimensional COF nanosheet, carrying out ultrasonic dispersion, carrying out vacuum filtration, self-assembling on a porous substrate, and drying to obtain a continuous separation layer with the thickness of 50-150nm. The functional group can regulate and control pore channels and surface charges, flux and selectivity of monovalent cations such as Li < + > can be adjusted, effective separation is kept at the pH of 3-11, and the functional group is suitable for lithium salt extraction and electrolyte purification.

The utility model discloses a Mylar film structure for aluminum shell battery, aluminum shell battery and electronic product belong to battery technical field, including Mylar film body, Mylar film body includes first cladding piece, second cladding piece and the connecting cladding piece of first cladding piece and second cladding piece are connected respectively, recesses is formed in first cladding piece and is used to store the first liquid storage groove of electrolyte, recesses is formed in second cladding piece and is used to store the second liquid storage groove of electrolyte, first liquid storage groove and second liquid storage groove all are located on the side surface of battery roll core. The utility model reaches the technical effect of improving diffusion efficiency, and promotes the long -term cycle performance of battery.

This invention provides a water surface photocatalytic oxidant release device, belonging to the field of photocatalytic equipment technology. It includes a main structure with an internal reaction chamber. The chamber has an inlet and an outlet at both ends, respectively, both communicating with the reaction chamber. An oxidant release membrane, a sulfonated polyethersulfone selective permeation membrane with a pore size <1 nm, is located at the outlet. The reaction chamber contains a catalyst support and a light source system. The catalyst support is made of porous ceramic and loaded with a g-C3N4 catalyst. The light source system includes an LED board fixed in the center of the catalyst support and surrounded by it. The LED board has a ring-shaped array of blue LED beads emitting light of a specific wavelength of 450-470 nm. An energy and control compartment is located inside one side wall of the main structure, housing a battery pack and a control unit board. This invention can significantly improve environmental benefits and treatment efficiency, and greatly enhance long-term operational stability and economic efficiency.

The utility model discloses a kind of anti-glare ceiling down lamp, including outer shell and metal panel, the surface of the outer shell is evenly provided with radiating fin, the inner side of outer shell is installed with reflecting sphere by support ring, and the both sides of the reflecting sphere are provided with mirror coating and diffuse reflection coating, the inner wall of the outer shell outside reflecting sphere is provided with inner bowl body, the inner wall of inner bowl body is provided with nano light guide plate;The opening of the outer shell is provided with metal panel, the center of metal panel is provided with hole, the inner side of hole is installed with light transmission lens, and the inner wall of metal panel outside hole is provided with annular groove, annular groove is installed with LED lamp ring by heat-conducting double-sided adhesive tape inside it.The utility model can significantly improve anti-glare effect by this multilayer light processing mechanism, provide more comfortable light environment.

The present application provides a kind of UV reinforced polyvinyl butyral modified asphalt and its preparation method.The modified asphalt is based on matrix asphalt, polyvinyl butyral, photoinitiator and crosslinking aid are added, and the uniform dispersion and crosslinking reaction of polyvinyl butyral in asphalt system are promoted by UV light, so as to improve the ultraviolet aging resistance, bonding strength and weather resistance of asphalt.The preparation steps include: heating the matrix asphalt to 140-190℃, adding polyvinyl butyral shear stirring, then adding photoinitiator and crosslinking aid, and continuing to stir under UV light to form a uniform modified asphalt system.The method can significantly improve the aging resistance, high temperature stability and low temperature crack resistance of modified asphalt, and is suitable for road paving, bridge waterproofing and other high durability engineering fields, and has good industrial application prospect.

This utility model relates to the field of lithium battery technology, and proposes a soldering structure and a cylindrical lithium-ion battery. The soldering structure includes multiple parallel and spaced solder lines, and the solder lines are wavy in shape. The width W1 of the soldering structure is 1.6-3.4 mm; the minimum distance W10 between two adjacent solder lines is 0.6-1.1 mm. By controlling the reasonable size of the soldering, problems such as welding explosions and discoloration of solder lines caused by heat concentration due to excessively small soldering can be avoided. At the same time, excessively large soldering can prevent the increase in laser travel, the reduction in welding efficiency and production capacity, and the decrease in welding reliability caused by the expansion of the solder line area, thereby effectively improving welding quality and efficiency.

The application discloses a perovskite solar cell stability enhancement system based on multi-modal machine learning, and belongs to the technical field of machine learning. The system comprises a dynamic acquisition module, a multi-modal fusion analysis module, an instruction generation module and a control module. The dynamic acquisition module acquires real-time data and internal structure change characteristics. The multi-modal fusion analysis module performs dynamic characteristic weight distribution on each parameter in the real-time data according to the internal structure change characteristics, and obtains a real-time degradation risk probability value. The instruction generation module generates a comparison result based on the real-time degradation risk probability value, and generates a control instruction according to the comparison result. The control module converts the control instruction into a control signal, and adjusts the parameters of a preset environment cabin and a control battery manufacturing device. The multi-modal fusion analysis module and the instruction generation module are arranged, the prediction deviation is significantly reduced, and the optimization instruction delay bottleneck is broken through.

The invention discloses a preparation method of a catalyst for producing hydrogen peroxide through oxygen deficiency tandem piezoelectric-mechanical redox, and the preparation process of the catalyst comprises the following steps: firstly, constructing a zinc oxide substrate with a litchi-shaped structure through a water-phase thermally-induced self-assembly reaction; then introducing oxygen defects with controllable content on the surface of zinc oxide by adopting a liquid-phase mediated chemical reduction mode; and finally, performing in-situ auto-polymerization on the surface of the defective zinc oxide to form a polydopamine coating, thereby obtaining the target catalyst. The catalyst can efficiently and highly selectively prepare hydrogen peroxide through ultrasonic excitation under the conditions of pure water and normal temperature, has the advantages of mild reaction conditions, high generation rate, good stability, environmental protection and the like, and is suitable for the application scene of distributed hydrogen peroxide in-situ preparation.

The present application belongs to the technical field of passive multi-physical field cooperative control, and particularly relates to a multi-field cooperative passive control device and method based on rigid geometric contour constraint natural air cavity phase change. The device comprises a first rigid member and a second rigid member, which form fixed, sliding or rotating cooperation, and are provided with a cooperation micro-gap of 0.02 mm to 0.2 mm therebetween; the rigid geometric air cavity coupling part is integrally formed on the cooperation surface and has a rigid geometric contour for constraining air cavity phase change evolution. Under external physical field excitation or relative motion, local negative pressure is formed in the micro-gap, natural air cavity periodic phase change is induced, the phase change path and pressure evolution are uniformly constrained by the rigid geometric contour, and the multi-field cooperative passive control of heat-flow-force-sound is realized in a single structure. The present application replaces the traditional discrete components with pure rigid structure, has no elastic element, no friction pair and no electric control unit, and is reliable in all working conditions.

The invention relates to the technical field of high polymer materials, in particular to a regenerated polyester material based on a Diels-Alder dynamic covalent network and a preparation method thereof, and the preparation method comprises the following steps: S1, preparing maleic anhydride grafted regenerated polyethylene glycol terephthalate marked as RPET-MA; the RPET-MA and furfuryl amine are subjected to a reaction, and RPET-F is obtained; s2, the RPET-F and bismaleimide are subjected to a reaction, and the regenerated polyester material is obtained. The method disclosed by the invention has the beneficial effects that a thermally reversible Diels-Alder dynamic covalent network is successfully constructed in regenerated polyester through a two-step method of firstly grafting a furan group and then cross-linking with BMI. The problem of performance degradation caused by thermal mechanical degradation of RPET is solved, and the material has reprocessing and self-repairing capabilities while maintaining mechanical properties.

The present application belongs to the technical field of polishing equipment, and relates to a mold polishing and grinding equipment. The present application comprises a workbench, a first mounting frame is arranged above the workbench, a mounting rod is horizontally slidably arranged on the first mounting frame, a second mounting frame is rotatably arranged on the mounting rod, polishing assemblies are arranged at the upper and lower ends of the second mounting frame, each polishing assembly comprises a rotating column rotatably arranged on the second mounting frame and a polishing disc arranged at the end of the rotating column, a driving assembly is arranged on the mounting rod to drive the second mounting frame to rotate, so that the positions of the two polishing assemblies are exchanged. By exchanging the positions of the two polishing discs, the two polishing discs are alternately polished, the wear of the polishing discs is reduced, the stability of the polishing quality is ensured, and the product quality is improved. The two polishing discs are alternately washed, the polishing discs are cleaned and cooled, and the service life of the polishing discs is prolonged.

This invention discloses a multi-scale feature fusion method and system for atmospheric turbulence video correction. It extracts shallow texture, mid-level structure, and high-level semantic information through a multi-scale feature pyramid, and combines frequency adaptive enhancement and deformable attention alignment mechanisms to perform channel-weighted processing on different frequency components. Adaptive optimization is achieved to address differences in turbulence sensitivity, and feature-level alignment is completed under optical flow guidance to eliminate tilt distortion. Simultaneously, a gated reference update module dynamically maintains reference features to suppress turbulence noise accumulation. Furthermore, a multi-head temporal channel self-attention mechanism is used to achieve cross-frame spatiotemporal fusion, improving temporal consistency, and a two-stage decoder is used to progressively restore image geometry and high-frequency details. This invention can significantly improve the clarity of turbulence-degraded images, providing technical support for high-precision imaging.

The utility model discloses a system of removing chlorine ion in lean organic phase in the system of crude phosphoric acid organic extraction production potassium dihydrogen phosphate, which comprises: a back extraction tank for reacting hydrochloric acid organic phase with ammonia water to generate ammonium chloride and separating phases; an aging tank connected to the outlet of the back extraction tank for static separation and phase separation to precipitate a chlorine-containing water phase; a multi-stage countercurrent water washing tank comprising at least three series-connected water washing tanks for washing the organic phase step by step; and an adsorption tower connected to the outlet of the last-stage water washing tank and provided with an adsorbent for further removing chlorine ions in the organic phase. The utility model fully utilizes washing water, reduces water consumption, realizes a chlorine ion removal rate of 94% to 96% in the lean organic phase, improves the purity of potassium dihydrogen phosphate products, prolongs the service life of the extraction agent, and systematically solves the industry problem that it is difficult to remove alkyl halides in the lean organic phase.

The utility model discloses a fixed connecting piece for photovoltaic panel installation, which relates to the technical field of photovoltaic panel installation and comprises two installation plates, one side of one installation plate is provided with an insertion groove, one side of the other installation plate is provided with an insertion plate, the front end and the rear end of one installation plate are both provided with a plurality of holes, and the holes are communicated with the insertion groove. A knob bolt used for fixing the insertion plate is arranged at the front end of the opening, second anti-skid plates are arranged at the upper ends of the two mounting plates, sliding rails are arranged on one sides of the two mounting plates, two sliding blocks are symmetrically arranged on the outer surfaces of the sliding rails, L-shaped limiting plates are arranged at the upper ends of the sliding blocks, and right-angle connecting pieces are arranged on one sides of the L-shaped limiting plates. The fixed connecting piece for installing the photovoltaic panel can flexibly adjust the distance between the installing plates to adapt to different photovoltaic panels, is convenient and stable to install, and can also prevent the panel surface from being damaged; the multiple groups of photovoltaic panels are simple to assemble, stable in connection, large in spacing after installation and beneficial to heat dissipation, the service life of the photovoltaic panels can be prolonged, and the performance of a power generation system is improved.

The invention discloses a preparation method of a photocatalyst material, and belongs to the technical field of material preparation and pollution treatment. The method comprises the following steps: by taking bismuth citrate as a multifunctional precursor, firstly mixing the bismuth citrate with a titanium source, a manganese source and a cerium source in a solvent for gelation, then carrying out solvothermal reaction to form an intermediate, and finally carrying out programmed temperature control pyrolysis in an inert and oxygen-containing atmosphere. In the pyrolysis process, carbon element doping and manganese and cerium bimetal ion lattice embedding are synchronously realized, and a graded porous folded structure is constructed in situ by utilizing precursor decomposition gas. The method integrally solves the problems of weak visible light response, low mass transfer efficiency and poor stability of a traditional material, and the prepared material shows efficient inhibition and degradation efficiency on mold such as aspergillus flavus under simulated granary low-illumination visible light.

The application discloses a method for preparing a Ti / Ni-based catalyst by electrochemical dealloying and application thereof, and belongs to the technical field of magnesium-based hydrogen storage materials. In view of problems of insufficient active sites, single valence and poor dispersity of the existing Ti / Ni-based catalyst, the Ti-Ni alloy is modified by using an electrochemical dealloying process, a dilute hydrochloric acid is used as an electrolyte, a Ti-Ni alloy sheet is used as an anode, and a graphite sheet is used as a cathode to construct an electrolytic cell, power electrolysis is performed until the alloy sheet is completely pulverized, and after centrifugal washing and drying, the Ti / Ni-based catalyst is obtained. The Ti / Ni-based catalyst is compounded with a magnesium-based hydrogen storage material by a mechanical ball milling method, the obtained composite hydrogen storage material exhibits excellent low-temperature hydrogen storage capacity, efficient hydrogen absorption and desorption kinetic performance and good cycle stability, and effectively solves the technical bottleneck of a traditional MgH2 system. The preparation method is simple in operation, controllable in cost and scalable, is suitable for practical application scenes such as vehicle-mounted hydrogen storage, and provides key support for commercialization of the magnesium-based hydrogen storage material.

The application discloses an IGBT module intelligent monitoring system integrated with a temperature sensor and relates to the technical field of power electronic equipment monitoring.The system comprises the following: an information acquisition unit, which comprises a detection loop formed by various sensors, acquires data, processes the data, generates a structured data set, and transmits the structured data set to a hot state evaluation unit; the unit predicts junction temperature trends, quantifies thermal margins, generates an evaluation report, and issues the evaluation report to a collaborative decision unit; the unit calculates optimal instructions and transmits the optimal instructions to a precise regulation and control unit; the latter executes regulation and control, records logs, acquires parameters, triggers protection, and feeds back corrections, thereby forming a closed-loop control; the application builds a multi-unit collaborative closed-loop control architecture, integrates multiple functions, realizes full-dimensional perception and fine management of IGBT modules, optimizes data processing and regulation and control logic, realizes efficient linkage of monitoring and regulation and control, predicts junction temperature changes, combines graded protection and dynamic correction, adapts to different working conditions, prolongs the service life, and improves the stability, reliability and operation efficiency of the system.

This invention provides a method, device, and medium for training embodied intelligence agents. The method includes: acquiring experience data generated by the agent when performing a grasping task in a current random domain; obtaining at least one failure cluster region; determining the expansion direction and expansion step size for each dimension to generate an initial expansion range; selecting the candidate parameter combination with the lowest success rate as the lowest success rate parameter combination; generating a locally expanded hyperrectangle; merging the locally expanded hyperrectangle with the current random domain and the initial expansion range to obtain an updated random domain; using the updated random domain as the environmental parameter sampling range for the next stage of training, and continuing to perform reinforcement learning training on the agent. This invention provides a training method that can automatically and efficiently locate weak regions of multi-parameter combinations and progressively expand the random domain.

The invention discloses a trailer power supply topology reconstruction method and system based on thermal management guidance, and belongs to the technical field of power electronics and power systems, and the method comprises the steps: collecting the real-time temperature, current and thermal management parameters of each battery unit of a trailer chassis, and generating thermal state features; based on the periodicity, evaluating the thermal safety risk and the power supply availability of each unit, and generating a state list marked with risk and available units; dynamically generating a power supply topology reconstruction instruction according to the real-time power demand and the state list of the tractor, forcibly isolating a risk unit, and planning an optimized parallel combination of available units; executing the instruction to control the switching device, and reconstructing an actual power supply connection topology; and finally, according to the reconstructed power supply role of each unit, synchronously generating and issuing a heating management cooperative control instruction. By integrating thermal state sensing and dynamic topology control, the dynamic power requirement of the tractor can be met on the premise of ensuring the thermal safety of the battery, and the system energy efficiency and the battery life are optimized.

The application discloses a kind of wet dust collector dust removal efficiency end-to-end prediction method, first acquisition actual pressure fluctuation signal, according to the size of dust removal efficiency division multiple intervals, by the actual pressure fluctuation signal corresponding to real dust removal efficiency, select the actual pressure fluctuation signal segment corresponding to real dust removal efficiency in different intervals;Two conversion methods are used to convert the signal segment in different intervals into images respectively;Different image feature fusion methods are used to fuse images to form image data sets;A set network model is used to train different image data sets in each interval to form different initial discriminant models respectively, and the accuracy of each interval different initial discriminant model is dynamically calculated to calculate the discriminant weight of different initial discriminant model in each interval, maximize the performance advantage of each model in a specific interval, to obtain a dust removal efficiency fusion prediction model, so as to realize high-precision, high-robustness dust removal efficiency monitoring.

This utility model relates to the field of shock absorber cover technology and discloses an automotive shock absorber cover structure, including a shock absorber assembly and a shock absorber cover. The shock absorber assembly is assembled inside the shock absorber cover, and a cover base plate is assembled at the bottom of the shock absorber cover. A protective cavity is formed inside the shock absorber cover, and the shock absorber assembly is assembled inside the protective cavity. Four guide components are assembled on the inner wall of the protective cavity. Each guide component includes two oppositely arranged fixing plates, and an installation groove is formed on the inner wall of the protective cavity at the guide components. This device can adaptively adjust the guide angle according to the movement trajectory of the shock absorber under different working conditions, further improving the guide accuracy, ensuring that the shock absorber assembly is always in a stable working state, and significantly extending its service life.

This invention relates to the field of solar panel mounting technology, and more particularly to a repeatable and rapidly deployable scissor-braced solar panel mounting system. A lower longitudinal beam is mounted on the ground and has a first threaded hole for connecting to a lower crossbeam. A lower crossbeam is connected above the lower longitudinal beam and has a second threaded hole for connecting to the lower longitudinal beam. Both ends of the upper surface of the lower crossbeam have grooves extending along its length, used for connecting and sliding the support components. A connecting beam has a first connecting groove and a second connecting groove. The first connecting groove connects to a first slider, and the second connecting groove connects to the support components. The support components are scissor-braced structures, with both ends connecting to the second connecting groove and the groove, respectively. This invention offers advantages such as high reusability, rapid deployment and dismantling, excellent site adaptability, superior durability, low maintenance, and high transportation and storage efficiency.