14results about How to "Cost advantage" patented technology

This application relates to a stacked interlocking semiconductor packaging structure, comprising: a substrate, a base plate, two chips, a packaging layer, and a protective shell; the substrate is disposed on the top surface of the base plate, and two chips are disposed on the substrate, with the packaging layer encapsulating the chips and the substrate; the protective shell is disposed on the top surface of the base plate and surrounds the sidewalls of the packaging layer; the protective shell includes: two or more stacked rings, each ring having a limiting groove on its inner sidewall, and the packaging layer having multiple limiting protrusions on its sidewalls, the limiting protrusions matching the limiting grooves for embedding within the limiting grooves. The protective shell surrounding the packaging layer effectively isolates and protects the packaging layer, preventing damage caused by direct exposure of the packaging layer's sidewalls to the outside. This application utilizes a stacked, interlocking ring structure to reliably complete the packaging process of microelectronic components or semiconductor devices; the overall structure is simple and easy to manufacture; it has significant advantages in terms of process speed and cost.

The invention relates to a frame interface for an electric bicycle, comprising a frame element with a first fastening region and a second fastening region, and comprising a fastening element, wherein the first fastening region is provided for the bearing-like fastening of a drive unit on the frame element, wherein the fastening element is fastenable on the second fastening region, wherein the second fastening region has a first clamping surface and the fastening element has a second clamping surface, which are provided for jointly encircling at least one partial region of the drive unit in a ring shape, in order to fasten the drive unit on the second fastening region by means of a clamping force.

The invention provides an in-situ polymerized lithium iron phosphate-bright aluminum foil composite positive electrode and a preparation method thereof, and relates to the field of lithium batteries. According to the positive electrode slurry, the functional additive A and the functional additive B are adopted for compatibility, and the additive B is a compound of which the molecular structure simultaneously contains polymerizable carbon double bonds and phosphate groups and is used for linking an inorganic surface and an organic polymer; the functional additive A and the functional additive B are compatible to construct a three-dimensional stable chemical bonding network, and a dynamic gradient conductive interface layer with high conductivity and strong binding power is constructed on the surface of the optical aluminum foil in situ, so that the risk that an active material falls off from a current collector in the later period of circulation is greatly reduced, and the interface resistance is remarkably reduced; the mechanical stability of the pole piece is remarkably improved (the interface bonding strength can still be kept at 90% after 1000 times of circulation), and the cycle life is long.

The application provides a wide free spectral range multispectral imaging chip structure, which comprises a pixel photosensitive unit and a light splitting unit, the pixel photosensitive unit is divided into a plurality of pixel regions along one of pixel directions a in sequence, and the other pixel direction b is not distinguished; the light splitting unit comprises a plurality of light splitting structures, the plurality of light splitting structures are integrally deposited and grown on the plurality of pixel regions one by one respectively, the light splitting structures are used for realizing narrowband filtering, and the plurality of light splitting structures respectively cover different spectral ranges. The application scheme breaks through the limitation of the free spectral range due to the material refractive index difference, and widens the free spectral range of narrowband filtering of a monolithic image sensor.

The invention relates to a method (20) for operating a drive assembly (10) of an electric bicycle (100), comprising the following steps: detecting (21) a pedal frequency of a crank drive (104); detecting (22) a rear wheel rotational speed of a rear wheel (110); determining (23) a transmission ratio between the crank drive (104) and the rear wheel (110); determining (24) an intervention ratio (31) on the basis of the pedal frequency and the rear wheel rotational speed and the transmission ratio; generating (25) a motor torque as a function of the determined intervention ratio (31).

This utility model relates to the technical field of electronic expansion valves, and in particular to a magnetic rotor assembly for an electronic expansion valve. Its overall structure has high integration, fewer parts, which is beneficial for weight reduction, better quality, and cost advantage. It includes a screw, a magnetic ring, and a stop rod. The stop rod is installed inside the magnetic ring, and the screw is installed inside the magnetic ring. The screw is used for the up-and-down transmission of the valve needle component. The magnetic ring provides magnetism to provide driving force, and the stop rod provides a stopping function.

This invention discloses a poly(4-methyl-1-pentene) aerogel, its preparation method, and its applications. By using camphene as a solvent for poly(4-methyl-1-pentene), a thermally induced phase separation process is initiated by controlling the cooling rate, followed by conventional drying to obtain a white aerogel with good self-supporting properties. The preparation method is simple and mild, requiring no complex processes or expensive equipment, and can be produced on a large scale. The aerogel possesses a rich microporous structure and extremely high solar reflectivity, making it suitable for radiative cooling for passive cooling. Furthermore, the aerogel prepared by this method exhibits excellent superhydrophobicity and thermal insulation properties, enhancing its potential for outdoor applications.

This invention provides a high-strength polyester fiber for outdoor use with radiative cooling function. The preparation method includes the following steps: titanium dioxide, silicon dioxide, silicon carbide, and zirconium phosphate are blended and ground in a certain proportion, dispersed in an acetone solution with a dispersant added, and then ultrasonically treated to form a nanoparticle dispersion; the nanoparticle dispersion is mixed with polyester chips; the mixed composite material is fed into a screw extruder for melt blending to form a spinning solution; the spinning solution is precisely metered by a metering pump and extruded through a spinneret to form fiber bundles, the spinneret being equipped with a slow-cooling heating device; the fiber bundles are post-treated to obtain high-strength polyester fibers. This invention selects a specific combination of titanium dioxide, silicon dioxide, silicon carbide, and zirconium phosphate, combined with specific slow-cooling technology and high-ratio stretch setting, to give the fiber excellent radiative cooling performance and mechanical strength, which can be widely used in outdoor clothing, awnings, car covers, and other fields.

This utility model belongs to the field of engineering construction technology, specifically a large-diameter pipeline high-altitude assembly operation platform, comprising: a main structure with an opening for mounting process pipelines from top to bottom, the opening being U-shaped, and lifting holes on the main structure; external platforms located at the bottom of both sides of the main structure; movable ramps located at the bottom of the main structure, with their ends resting on the two external platforms; and a protective cage located on both sides of the main structure, above the external platforms. This utility model's large-diameter pipeline high-altitude assembly operation platform is simple to manufacture, reusable multiple times, and performs well, ensuring pipeline construction quality and reducing labor and machinery costs.

The invention relates to a method for operating an NMR measurement system having a main field magnet for generating a static main magnetic field B0 in the z-direction, a measurement HF coil for exciting a core spin of a measurement substance, an NMR lock regulator for detecting field disturbances and for generating a correction field by means of a compensation coil, the lock regulator being carried out, the invention relates to a method for measuring the spin of a reference substance, comprising a locking adjustment during which the spin of the reference substance is excited, characterized in that the spin magnetization M of the reference substance is brought from an unbalanced state into a state in which the x component Mx of the spin magnetization has an equilibrium value Mxeq by applying an HF pulse (1, 1 '), the x component Mx of the spin magnetization being oriented in an x-direction perpendicular to the z-direction, whereby improved measurement accuracy is achieved.

This invention relates to a multi-state transport device with a synchronous containment structure, comprising a main structure, deformable units respectively disposed on both sides of the main structure, movable support components respectively associated with the deformable units, and an additional synchronous structure for applying synchronous retraction drive to the deformable units on both sides during containment. When transitioning from an expanded state to a containment state, the synchronous structure applies synchronous retraction drive to the deformable units on both sides in the containment direction, forming motion coupling and establishing a motion linkage retraction relationship between the deformable units on both sides, forcing the deformable units on both sides to contain synchronously, and the movable support components on both sides synchronously retract from the ground support position to the containment position. The synchronous structure does not apply synchronous constraints to the deformable units on both sides during deployment; it only functions during containment. This invention achieves smooth and coordinated containment through a two-way mechanism of natural gravity synchronization during deployment and forced synchronization by the synchronous structure during containment, resulting in a simple and reliable structure.

A kind of commercial vehicle single motor double drive axle configuration, including motor, middle axle, rear axle, middle axle reducer, rear axle reducer, clutch and transmission shaft, motor is vertically installed on the middle axle, the power output by the motor is transmitted to the middle axle by the middle axle reducer, another way is driven the rear axle by the rear axle reducer, clutch and transmission shaft.Single motor double drive axle configuration of the utility model, under normal circumstances, clutch is in closed state, double axle is driven simultaneously;But in the case of long distance uniform speed driving, downhill coasting, braking etc. only single axle can drive, clutch can be disconnected, to avoid the additional transmission friction loss of rear axle. Only one motor is needed to realize the relevant functions, and cost and weight have advantages.

This invention discloses a black phosphorus-hydrotalcite composite material additive for cold rolling emulsions and its application. The preparation method of the black phosphorus-hydrotalcite composite material additive for cold rolling emulsions involves mixing black phosphorus nanosheets, MgAl-LDH, stearic acid, and anhydrous ethanol in a specific mass ratio, followed by ultrasonic dispersion. The mixture is then stirred and reacted at 20-40°C for 2-3 hours. The supernatant is collected by centrifugation and vacuum dried at 40°C for 8 hours. The mass ratio of black phosphorus nanosheets, MgAl-LDH, and stearic acid is 1:2-5:1-3, and the mass-to-volume ratio of black phosphorus nanosheets to anhydrous ethanol is 2:3-5 mg / ml. The additive provided by this invention uses black phosphorus and hydrotalcite as core components, contains no harmful chemical substances, and is suitable for cold rolling processes of difficult-to-machine metals. It meets the lubrication requirements of high-strength processing while reducing waste liquid treatment costs. The friction coefficient of the emulsion with the additive of this invention is stable between 0.082 and 0.12, which can effectively solve problems such as adhesion and surface scratches in the cold rolling of difficult-to-process metals, and improve the processing accuracy of the sheet and the service life of the rolls.

This invention discloses a biomass porous aerogel, its preparation method, and its applications. The preparation method includes the following steps: S1: Sugarcane bagasse is soaked in an alkaline solution, washed, and its pH value is adjusted to 7; after drying, it is carbonized in an inert gas atmosphere to obtain carbonized sugarcane bagasse fiber; S2: Ti3AlC2 is weighed and etched with LiF and HCl to obtain multilayer MXene material; the multilayer MXene material is sonicated in an inert gas atmosphere, centrifuged, and the supernatant is collected and freeze-dried to obtain MXene nanosheets; S3: MXene nanosheets and carbonized sugarcane bagasse fiber are mixed, hydroxyethyl cellulose is added, and after stirring and freezing, ice crystals are removed in a vacuum to obtain biomass porous aerogel. The biomass porous aerogel prepared by this invention has low density, semiconductor properties, significant reversible compression, and excellent mechanical properties, and also features low thermal conductivity, reusability, and low cost.