11results about How to "Improve energy transfer efficiency" patented technology

This application discloses an intelligent reflective surface and a covert communication system, belonging to the field of wireless communication technology. The intelligent reflective surface includes multiple intelligent reflective surface units arranged in an array; each intelligent reflective surface unit includes: a first substrate, a second substrate, and a third substrate; a metal patch and a varactor diode, located on the side of the third substrate opposite to the second substrate; the metal patch includes a first patch and a second patch, and the varactor diode is located between the first patch and the second patch, with its negative and positive terminals electrically connected to the first patch and the second patch, respectively; a metal ground plane, located between the first substrate and the second substrate; a first bias line and a second bias line, located on the side of the first substrate opposite to the second substrate; the first bias line is electrically connected to the metal ground plane and the first patch, respectively, and the second bias line is electrically connected to the second patch. This application can achieve precise control of electromagnetic waves, reduce electromagnetic energy loss, improve energy transmission efficiency, suppress electromagnetic wave leakage, and improve communication covertness.

The utility model discloses a novel swing type planetary ball mill, which relates to the technical field of ball milling equipment and comprises a base, two swing support frames fixed at the top of the base, swing bearing seats fixed at the tops of the swing support frames, a swing frame rotatably connected between the two swing support frames through the swing bearing seats, and a swing arm mechanism arranged on the base. The swing arm mechanism comprises a speed reducer fixed to the base, a motor is installed at the input end of the speed reducer, a rotating wheel is fixed to an output shaft of the speed reducer, a swing arm is fixed to the shaft end of one end of the swing frame, and a connecting rod is rotationally connected between the rotating wheel and the swing frame. Reciprocating swing of the grinding tank can enlarge the coverage range of grinding balls in the tank, the phenomenon that materials on the inner edge or the bottom of the grinding tank are not fully ground in a traditional single rotation mode is reduced, an additional impact direction such as horizontal or vertical vibration can be introduced, energy input in unit time can be improved in combination with original planetary rotation, and the service life of the grinding tank is prolonged. And particularly, the crushing effect on tough materials is better.

This invention discloses a bidirectional AC / DC converter, belonging to the field of power conversion technology. It includes a first transformer and multiple switches. The opposite-named terminal of the primary winding of the first transformer is connected to the first terminal of the first switch. The opposite-named terminal of the secondary winding of the first transformer is connected to the first terminal of the second switch. The second terminal of the second switch is connected to the first terminal of the third switch. The second terminal of the third switch is connected to the same-named terminal of the secondary winding of the first transformer. The opposite-named terminal of the secondary winding of the first transformer is connected to the first terminal of the fourth switch. The second terminal of the fourth switch is connected to the first terminal of the fifth switch. The second terminal of the fifth switch is connected to the same-named terminal of the secondary winding of the first transformer. This bidirectional AC / DC converter enables bidirectional energy transfer. When the DC side is a photovoltaic module, it can provide reactive power to the capacitor on the photovoltaic module side, absorb reactive power on the photovoltaic module side, and adjust the power factor.

This invention provides a follow-up clamping device for providing vortex gas to a laser welding head to protect the workpiece being welded. The follow-up clamping device includes: a clamping body having a conical inner cavity; a connecting member, one end of which is connected to the laser welding head; and an annular gas supply member, through which gas is introduced from the large opening side of the conical inner cavity, converges and forms a vortex-like converging airflow within the conical inner cavity, and is then ejected from the small opening side of the conical inner cavity, suitable for spraying towards the workpiece being welded. This invention solves the problems of unstable gas protection and the existence of protection dead zones in existing technologies, as well as the problem of severe plasma shielding effects affecting welding depth and energy transmission in existing technologies. It also solves the problem of existing laser welding clamping mechanisms obstructing airflow and causing protection blind zones.

This utility model discloses a variable cross-section hammer core, comprising a hammer core body separately configured from a piston. The hammer core body comprises n segments with different shaft diameters and coaxiality, where n ≥ 2 is an integer. The n segments of the hammer core body have discontinuous cross-sections, with the upper segment having a larger cross-section than the lower segment. The axial lengths of each segment are similar. The cross-sectional area at the connection between the upper end of the hammer core body and the piston is Sn, and the cross-sectional area at the impact point at the lower end of the hammer core body is S1, where Sn ≥ 2S1. This utility model employs a discontinuous cross-section design to improve the energy transfer efficiency during hammer strikes.

This invention relates to the field of switching power supply technology, specifically providing an isolated power supply circuit aimed at solving the problems of low integration, poor output consistency, and high cost and energy consumption in existing multi-channel isolated power supplies. To this end, the invention comprises: a power control and drive module, an isolation module, a rectification, filtering, and voltage regulation module, an anti-interference module, and a load module. The power control and drive module receives power, generates a drive voltage signal, and outputs the drive voltage signal to the isolation module, while simultaneously outputting a ground potential voltage signal to the anti-interference module. The isolation module achieves voltage signal isolation output through internal electromagnetic coupling, outputting the isolated voltage signal to the rectification and filtering module. The anti-interference module outputs the filtered, interference-free ground potential voltage signal to the rectification and filtering module. The rectification and filtering module performs rectification and filtering processes, outputting a stable voltage signal to the load module. This invention features high integration and high output consistency.

This invention provides a method for preparing a deuterated compound and an organic electroluminescent device. The structure of the deuterated compound is shown in Formula I: Formula I; wherein fragment 1 is selected from:; fragment 2 is selected from:. The method for preparing the deuterated compound includes reacting compound A with compound B1 or B2, and then reacting the resulting intermediate compound with compound C1 or C2 to obtain deuterated compound I-1 with fragment 1 being b1 and fragment 2 being c1 or c2, or deuterated compound I-2 with fragment 1 being b2 and fragment 2 being c1 or c2; and reacting deuterated compound I-2 with heavy water to obtain deuterated compound I-3 with fragment 1 being b2 and fragment 2 being c3 or c4. The deuterated compound prepared by this method can effectively reduce the nonradiative energy loss of the TADF sensitization system, improve the thermal stability and excited-state lifetime of the material, thereby optimizing energy transfer efficiency, suppressing device efficiency roll-off, and significantly extending the lifespan of OLED devices.

The utility model discloses a can realize earphone wireless charging module of two -way data communication, including charging storehouse casing, earphone containing cavity, fixed magnetic ring, bottom plate, wireless transmitting module, earphone receiving module, the earphone containing cavity is established at the top of charging storehouse casing, the fixed magnetic ring fixedly connected in earphone containing cavity inboard, the bottom plate fixedly connected at the bottom of charging storehouse casing, wireless transmitting module fixedly connected in charging storehouse casing inside, earphone receiving module places in earphone containing cavity inside, and the integrated design of flexible circuit board and decoding chip realizes high -speed data transmission in limited space, and the security and functionality are taken into account.

This invention discloses a method for preparing deuterated aromatic compounds. Using aromatic compounds as raw materials, a photocatalytic deuteration reaction is carried out with a deuterium source reagent under the action of a light source and a catalyst. The deuterated aromatic compounds are obtained after separation and purification. The catalyst includes at least one photosensitizer, or a combination of it with any one or more photocatalysts. The preparation method of this application features mild reaction conditions, simple operation, and high yield.

The application provides a lock opener, a passive electronic lock assembly, an electronic lock and an energy transmitter. The lock opener comprises a transmission member and a connecting coil. The transmission member has a first end and a second end. The first end is used for connecting with a mobile terminal. The connecting coil is connected to the second end. The connecting coil is used for nested cooperation with a receiving coil of the electronic lock. The lock opener can transmit the energy of the mobile terminal to a driving module of the electronic lock, so that the driving module can drive the electronic lock to switch between a locked state and an unlocked state. The lock opener of the application directly transmits the energy of the mobile terminal to the electronic lock through the nested cooperation of the connecting coil and the receiving coil, directly controls the switch of the electronic lock, and further does not need to set energy storage capacitors, MCUs and other components in the electronic lock, which is beneficial to simplifying the structure of the passive electronic lock assembly, reducing the volume of the passive electronic lock assembly and reducing the cost.

This invention provides a sonic atomizing device, including a housing with an internal partition dividing it into an upper medium cavity and a lower mounting cavity. The medium cavity contains an atomizing groove with two opposing vertical sidewalls. The partition includes a symmetrically arranged first loading surface and a second loading surface. The horizontal distance H between the first and second loading surfaces and the adjacent sidewalls is 0 to 50 mm, and they are inclined upwards at 10° to 50° relative to the horizontal. Atomizing plates are disposed on the first and second loading surfaces, facing the sidewalls and higher than their bottom edges. The inclination of the first and second loading surfaces controls the incident angle of the ultrasonic waves, achieving directional transmission of ultrasonic energy and ensuring that the ultrasonic propagation path forms an optimal angle with the sidewalls of the atomizing groove, thereby improving energy transfer efficiency and atomization uniformity.