4results about How to "The contact interface is stable" patented technology

The utility model provides a discharging device for a motor output shaft, and the device mainly comprises a conductive coupling assembly which is electrically connected with the output shaft; the conveying unit is provided with an input end and an output end, the input end is used for receiving the current collected by the conductive coupling assembly, and the output end exports the current received by the conveying unit in a grounding mode; wherein the conductive coupling assembly is composed of a connecting handle and a chuck part, the connecting handle is electrically connected with the input end, and the chuck part can be connected with the output shaft in a clamping mode; by adopting the above structure, a conductive coupling structure formed by an existing discharging device and a motor output shaft in a lap joint mode can be avoided, the technical problem that the reliability risk exists in an electric coupling structure on the discharging device is solved, and the problems of increased contact resistance and poor contact caused by abrasion and aging of an electric brush or a carbon brush are avoided; the discharging efficiency and the reliability of shaft current management are improved, direct mechanical abrasion to the output shaft of the motor in the shaft current discharging process is effectively reduced, and the service life of the motor and related parts is prolonged.

The invention relates to ultraviolet-cured high-viscoelasticity ionic conductive hydrogel as well as a preparation method and application thereof, and belongs to the technical field of functional polymer materials and bioelectronics. According to the hydrogel, an ultraviolet light sensitive zwitterionic monomer (SBMA), a high-density cationic monomer (DMDMAC), a cross-linking agent (PEGDA) and a photoinitiator are selected, and under the ultraviolet light exposure condition, the photoinitiator is decomposed to generate active free radicals to trigger a cross-linking polymerization reaction. The hydrogel has a three-dimensional network structure, integrates softness, high stretchability, strong tissue adhesion and high conductivity, and has fracture tensile strain gt; the adhesive strength is gt; and the ionic conductivity can reach 2.24 S / m. The preparation process is simple, rapid in-situ forming of the hydrogel on the skin surface can be achieved, the flexible biological electrode prepared based on the hydrogel has low skin-electrode interface impedance, motion artifacts are effectively inhibited, and the flexible biological electrode is suitable for long-term, dynamic and high-signal-to-noise-ratio biological electric signal monitoring and has good application prospects. And good biocompatibility and wearing comfort are achieved.

The application discloses a kind of composite electrode and its preparation method and metal lithium battery.The composite electrode includes negative electrode, positive electrode and current collector, the current collector is located between positive electrode and negative electrode;The negative electrode includes metal lithium composite material layer, the metal lithium composite material layer includes granular double-skeleton lithium carbon composite material, the double-skeleton lithium carbon composite material has lithium boron particle as core, the core has lithium boron alloy structure skeleton and active lithium, three-dimensional porous carbon skeleton space layer formed by nano carbon material is arranged on the surface of the core, lithium boron alloy structure skeleton and carbon skeleton space layer formed by carbon material constitute double skeleton.The composite electrode has small volume change, long cycle life and can resist high temperature above 200 DEG C, is one of the candidate electrodes of power battery.

This utility model relates to the field of solar cell technology, specifically disclosing an etching apparatus. The apparatus includes: an etching unit comprising a substrate, wherein a liquid flow channel is provided on the substrate, the liquid flow channel having a supply port for providing etching solution and a drain port for discharging etching solution; and a liquid flow generating device configured to generate a liquid flow of etching solution, the liquid flow direction being from at least one of the supply ports into the liquid flow channel and from at least one of the drain ports out of the liquid flow channel. Compared with the prior art, the contact interface between the etching solution and the silicon wafer of this utility model is more uniform and stable, which can effectively improve etching uniformity, reduce over-etching rate, improve etching effect, and thus improve the performance and quality of the processed silicon wafer. At the same time, the overall structure of this utility model is simpler, the production precision requirements of the apparatus are lower, effectively reducing equipment costs and manufacturing difficulty, and facilitating industrial production.