12results about How to "Avoid volume" patented technology

The application discloses a low-vibration active phase modulation composite pulse tube Stirling cryogenic refrigerator and belongs to the technical field of cryogenic refrigerators. The composite refrigerator cold finger integrates a first Stirling component as a high-temperature stage and a second pulse tube component as a low-temperature stage. The innovation is that the phase modulation unit of the second pulse tube component is composed of a second inertia tube wound and fixed in the inner circle of the gas reservoir, and the gas reservoir is integrally connected to the first cold end heat exchanger to improve the system efficiency through low-temperature arrangement. At the same time, the motion state of the compressor piston and the first displacer is monitored and cooperatively controlled in real time through the compressor displacement sensor and the cold finger displacement sensor, active and accurate phase modulation is realized, and the active vibration damper is used to perform reverse compensation according to the motion feedback of the first displacer to significantly offset the vibration output of the whole machine. The application realizes the unity of high efficiency, low vibration and high reliability, and is particularly suitable for vibration-sensitive space exploration and other application scenarios.

The present application relates to the field of high polymer bonding method, and discloses a kind of in-situ bonding method of decorative film layer and soft glue base material, comprising: the decorative layer with latent reaction layer in back is placed in situ interface reaction field;Initial high polymer bonding matrix is introduced and maintained non-isothermal enthalpy relaxation state to retain free chain segment kinetic activity;Chemical potential gradient is used to induce component migration to interface and form enrichment layer;Secondary heat pulse is applied to induce reaction group and latent reaction layer to covalently bond to construct interpenetrating network;Secondary high polymer bonding matrix is introduced to drive chain segment penetration using hydrostatic pressure, the present application realizes interface chemical reconfiguration by component directional migration, eliminates thermodynamic repulsion effect, changes interface failure mode into bulk cohesive failure, and enhances stability under severe working conditions.

This invention provides an electronic card cooling device with a multi-dimensional extended structure. Through a collaborative design of a two-dimensional planar array and a three-dimensional cascade, it significantly increases the effective working volume of the electronic card material within a limited space, thus laying the structural foundation for improved cooling capacity. Based on this, the cooperation between the magnetic drive unit and the mechanical linkage module enables stable and rapid reciprocating motion of the electronic card components between the hot and cold ends. Furthermore, the timing delay control of the circuit control system further ensures precise synchronization between the temperature change cycle of the electronic card effect and the mechanical motion cycle, allowing the electronic card material to absorb heat when in contact with the hot end and release heat when in contact with the cold end, avoiding energy loss. This invention, by simultaneously expanding the number of electronic card materials and components in two-dimensional and three-dimensional space, achieves a spatial dimension multiplication of cooling capacity, maximizing the cooling effect in space-constrained scenarios, and providing an effective solution to overcome the bottlenecks of existing electronic card cooling technologies.

The application relates to a flexible charging module control method and device supporting V2G, comprising the following steps: determining whether there is a hard switching risk according to the comparison result of the load power value and the preset threshold value; in the case that there is a hard switching risk, adjusting the resonant frequency of the CLLL topology to the first frequency interval based on a frequency-duty cycle hybrid modulation strategy, making the resonant current phase and the switch tube voltage phase form a preset phase difference, and adjusting the drive signal duty cycle of the primary side switch tube and the secondary side switch tube, so that the conduction time difference of the primary side switch tube and the secondary side switch tube increases with the decrease of the load power value; based on an adaptive frequency spectrum expansion algorithm, the resonant frequency is periodically dithered in the first frequency interval with a preset step, and the dithering period and the switching period of the switch tube are in a nonlinear mapping relationship; the bidirectional power conversion efficiency is improved, the light load hard switching and electromagnetic interference problems are solved, and the reliable operation of the charging module in the V2G scene is ensured.

This invention relates to the field of lithium battery technology, and in particular to a method for preparing a lithium-ion battery cell. The invention discloses a method for preparing a lithium-ion battery cell, comprising: first, preparing a positive electrode slurry containing modified titanium aluminum carbide, graphene oxide, etc., and a negative electrode slurry containing aminated carbon nanotubes, zinc aluminum spinel, etc., both processed according to specific proportions and processes; second, coating the positive and negative electrode slurries separately onto a current collector, and obtaining positive and negative electrode sheets through drying, coating with a coating agent, etc.; next, preparing a composite separator coated with a separator coating agent and curing it; finally, winding the separator in a positive-separator-negative-separator sequence, and obtaining a lithium-ion battery cell through drying, encapsulation, electrolyte injection, formation, etc.

This invention belongs to the field of environmentally friendly fuel technology, specifically relating to a method for preparing a green, low-carbon, and highly efficient modified fuel for alcohol-hydrogen engines. This invention comprehensively improves fuel performance through a progressive synergistic architecture of a bio-methanol platform – an oxygen-containing combustion-promoting system – a stability barrier – and a low-energy-consumption blending path. Using bio-methanol as a base, it optimizes combustion by compounding with oxygen-containing components such as 2-MTHF and DMM / MF, achieving rapid ignition, emission reduction, and noise reduction. Phase behavior is regulated by isobutanol and polyether-modified silicon, achieving a reversible and stable phase without the need for high-HLB surfactants, preventing deposition and gas lock. A four-fold protective barrier is constructed using GMO and fluorinated silica polyethers, combined with antioxidant synergy to achieve corrosion resistance and aging resistance. The process adopts a sequential design of front-end purification – mid-stage two-phase construction – and end-stage static mixing, achieving low-energy homogenization and ensuring storage, transportation, and operational stability.

The application discloses a compound based on a PROTAC strategy and a preparation method, a pharmaceutical composition and application thereof, discloses a compound with AR / AR-V7 protein degradation activity and a preparation method, a pharmaceutical composition and application thereof. The structure of the compound is as shown in the formula I. The compound can effectively degrade AR / AR-V7 proteins in vivo and in vitro, has a significant antitumor effect, has no obvious toxic side effects, and can be used for treating castration-resistant prostate cancer. The preparation method of the compound is simple and easy to operate, and is beneficial to structural expansion.

The application discloses a pry-mounted hydrogen mixing ratio detection device for a gas pipeline, which comprises a sampling pipeline, both ends of the sampling pipeline are used for detachable assembly with the gas pipeline, at least one sampling port is arranged on the sampling pipeline, a hoistable support is provided with a containing position, the sampling pipeline is detachably arranged in the containing position, an analyzer is arranged on the hoistable support and connected with the sampling port, a diffusion pipeline is connected with the analyzer, and the diffusion pipeline is also used for being connected with a diffusion point of the gas pipeline. The pry-mounted device is used for integrating and mounting the sampling pipeline, the analyzer and the diffusion pipeline on the hoistable support, and the pry-mounted device can be hoisted to the gas pipeline as a whole, only the two ends of the sampling pipeline need to be connected with the gas pipeline, and the diffusion pipeline needs to be connected with the diffusion point of the gas pipeline, so that the pipeline is shortened, the viscosity and volume delay of gas flowing in the long pipeline are avoided, the data response period is shorter, the on-site workload and construction time are significantly reduced, and the detection precision can be greatly improved.

The invention discloses a binder-free transition metal sulfide composite nitrogen-doped graphene negative electrode material and a preparation method thereof, and belongs to the technical field of secondary battery negative electrode materials. According to the technical scheme, the preparation method comprises the following steps: 1) dissolving zinc nitrate, cobalt nitrate and nitrogen-doped graphene in a mixed solution of ethanol and water, uniformly mixing, adding ammonium fluoride and urea, and continuously stirring; 2) adding foamed nickel and the uniformly mixed solution into a high-pressure reaction kettle for hydrothermal treatment, cooling, washing and drying to obtain a Zn-Co-precursor; (3) calcining the Zn-Co-precursor in an inert atmosphere, and (4) adding the Zn-Co-precursor into a high-pressure reaction kettle containing a sulfur source for hydrothermal vulcanization treatment, washing and drying to obtain the ZnCo2S4-coated NGr / NF negative electrode material.The graphene negative electrode material can improve the overall performance and stability of a secondary battery.

The application discloses a kind of solid hydrogen storage materials and preparation method thereof.The material is dense solid composite, by hydrogen production agent, non-noble metal boride catalyst and composite lithium cobalt oxide carrier is formed by pressure molding, and water can be supplied hydrogen.Hydrogen production agent is based on sodium borohydride or potassium borohydride;The carrier is modified composite lithium cobalt oxide, and has carrier and catalytic function.This application eliminates liquid solvent and porous support structure, builds synergistic catalytic system, to improve mass and volume hydrogen storage density, and ensure stable hydrogen production rate.Preparation method only involves solid phase mechanical mixing and pressing molding, and process is simple, suitable for large-scale production.The material has the characteristics of portable, safe, and can be used as an ideal hydrogen source, applied to hydrogen fuel cell and other fields.

The application discloses a broadband frequency selective limiting system and a radio frequency device, and relates to the technical field of microwave radio frequency devices. Specifically, the application comprises a first input coupling unit, a first limiting component, a second input coupling unit, a second limiting component and an output synthesis unit. The input end of the second input coupling unit is connected with the first isolation end of the first input coupling unit. The output synthesis unit is electrically connected with the output end of the first limiting component and the output end of the second limiting component. Microwave signals of the first frequency band and the second frequency band are finally uniformly converged by the output synthesis unit. Through the cascading mode of the coupling unit and the limiting component reflection mechanism, the application solves the high insertion loss caused by the equal energy division of the traditional power divider and the large size problem caused by the series filter, greatly reduces the cost, and also expands the effective working bandwidth.

This application relates to the field of polymer materials technology, and more specifically, to an acid-resistant ABS composite material for cameras used in acidic environments and its preparation method. The raw materials comprise the following weight percentages: ABS resin 75-86%; PBT resin 5-18%; acid-resistant compatibilizer 2-8%; the balance being processing aids. The acid-resistant compatibilizer is composed of maleic anhydride copolymer, hydroxyl-containing fluorosiloxane polymer, and epoxy-based cage-like polysilsesquioxane in a weight ratio of 4:(0.1-0.5):(0.5-0.9). Using the acid-resistant compatibilizer of this application, the composite material, while maintaining good impact resistance, reduces cracking, dissolution, stress whitening, swelling, and performance degradation in acidic media and high-temperature environments. Simultaneously, it exhibits high environmental resistance, improving its practicality in cameras used in acidic environments.