8results about How to "Avoid aging failure" patented technology

The utility model discloses an LED electrode and a chip. The LED electrode comprises a first adhesion layer, a functional layer, a conductive layer, a spacing layer and a bonding wire layer, wherein the first adhesion layer is used for adhering to an epitaxial structure; the functional layer is used for protecting the first adhesion layer; the functional layer comprises a single-layer structure or a multi-layer structure, when the functional layer is of the multi-layer structure, a metal medium of the functional layer is at least two of Ti, Pt, Ni, W, W alloy and Al-Cu alloy, and the thickness of the functional layer is 1-5 microns; when the functional layer is of a single-layer structure, the metal medium of the functional layer is one of Ti or Ni metal films, and the thickness of the functional layer is # imgabs0 #. According to the utility model, the spacing layer is arranged between the conductive layer and the bonding wire layer to separate the conductive layer from the bonding wire layer, so that the problems of poor eutectic and too small thrust value between the bonding wire layer and the bonding wire under the bonding wire condition of normal pressure and within 200 DEG C are avoided, and the service life of the bonding wire layer is prolonged. And therefore, the practical application problems of off-line, poor contact and the like are solved.

The suspension lining comprises an inner pipe, a first middle pipe and an outer pipe, the inner pipe, the first middle pipe and the outer pipe are sequentially arranged in a sleeved mode from inside to outside, a first buffering body is formed between the inner pipe and the first middle pipe, and a second buffering body is formed between the first middle pipe and the outer pipe; the second middle pipe and the first middle pipe are matched in an inserted mode in the axial direction, and the second middle pipe, the first middle pipe and the first buffering body jointly define a heat insulation cavity at the end of the first buffering body. According to the suspension bushing, the heat insulation cavity can prevent a heat source from directly radiating the first buffer body, so that the problems of aging failure, cracking and the like caused by heating of the first buffer body can be avoided, the service life of the suspension bushing can be prolonged, the maintenance cost can be reduced, secondary vibration reduction can be performed by arranging the first buffer body and the second buffer body, and the service life of the suspension bushing is prolonged. The damping effect is guaranteed, the NVH performance of the whole vehicle and the use comfort of a user can be improved, the use effect is better, and the application range is wider.

The present invention discloses an electrode slurry, a preparation method and a photovoltaic cell, and relates to the technical field of solar cells, in order to solve the problem that the existing electrode slurry silver layer and the welding strip are prone to produce cold welding, resulting in low tension. The electrode slurry includes a first conductive material and a second conductive material, the first conductive material at least includes nano silver powder, the second conductive material is a Sn-Zn-Ga-Nd alloy, and the melting point of the second conductive material is 176°C to 198°C. The preparation method is used to prepare the electrode slurry, and the photovoltaic cell uses the electrode slurry. The electrode slurry, preparation method and photovoltaic cell provided by the present invention are used to improve the welding bonding strength between the electrode slurry and the welding strip of the component string welding when printing the main grid during the battery manufacturing process.

The utility model relates to the technical field of radioactive sample detection equipment, and particularly discloses a dynamic sealing structure and a clamping and positioning device. The dynamic sealing structure comprises a sample cavity, a first inner cavity, a second inner cavity, a reciprocating motion component and a stainless steel telescopic sleeve, the sample cavity is provided with a window; the first inner cavity is hermetically communicated with the window; the second inner cavity is communicated with the first inner cavity through a through hole directly facing the window; the reciprocating motion component is axially and movably arranged in the through hole; the stainless steel telescopic sleeve is arranged on the reciprocating motion component in the second inner cavity in a sleeving mode, one end of the stainless steel telescopic sleeve is connected with the reciprocating motion component in a sealed mode, and the other end of the stainless steel telescopic sleeve is movably connected with the reciprocating motion component in the axial direction and connected to the through hole in a sealed mode. The dynamic sealing structure and the clamping and positioning device are good in sealing performance after long-term use, high in reliability and free of maintenance.

The utility model discloses a stainless steel double-external-thread extension tube, which relates to the technical field of stainless steel tubes, and comprises a double-external-thread tube body, external thread sections are arranged at two ends of the double-external-thread tube body, the external thread sections extend along the axial direction of the double-external-thread tube body, movable sleeves are sleeved at two ends of the double-external-thread tube body, and the movable sleeves are sleeved at two ends of the double-external-thread tube body. The movable sleeve comprises a hexagonal internal thread sleeve, a short extension pipe opening and a long extension pipe opening, the short extension pipe opening and the long extension pipe opening are fixedly welded to the two ends of the hexagonal internal thread sleeve respectively, the hexagonal internal thread sleeve is in threaded connection with the external thread section through the internal thread sleeve, the short extension pipe opening and the long extension pipe opening sleeve the periphery of the double-external-thread pipe body, the short extension pipe opening is located on the outer side, and the long extension pipe opening is located on the inner side. And a sealing gasket is sleeved on the external thread section and is embedded in the short extension pipe orifice. According to the stainless steel extension pipe, the outer thread section is extended, the extended outer thread section is connected with the movable sleeve, the movable sleeve is assembled with the sealing gasket, and the movable sleeve is assembled with the outer pipe, so that the reliability of the connecting position of the stainless steel extension pipe is greatly improved.

This utility model belongs to the field of air source heat pump coil technology, specifically referring to an air source heat pump coil assembly, including a shell and a single tube. The shell has a cylindrical hollow structure, and a fixing plate is installed on the top of the shell. The fixing plate is horizontally covered on the top of the shell, and the fixing plate has through holes. Two sets of through holes are arranged symmetrically, and connecting components are installed in the corresponding through holes. The single tube passes through the connecting components and the through holes. The two sets of single tubes pass through the two connecting components and the through holes respectively. The tube segments located inside the shell are spirally wound to form a coil. The connecting components include a threaded sleeve, a nut, and a trapezoidal rubber ring. Double sealing is achieved through the cooperation of the trapezoidal rubber ring and the elastic rubber ring. The annular step of the trapezoidal rubber ring and the annular convex edge of the elastic rubber ring form an interference fit, which can actively compensate for the aging gap of the rubber ring after long-term use. At the same time, the ease of assembly is significantly improved, and the installation time is greatly shortened.

The application belongs to the technical field of new energy automobile power electronic control, and particularly relates to a closed water channel single-parallel integrated power semiconductor module, which comprises six TPAK power units arranged in a single row and symmetrically along the length direction of a cold plate; three upper pipe TPAK power units and three lower pipe TPAK power units are alternately and symmetrically arranged to form a three-phase full bridge; a folded fin is arranged between the cold plate and a water channel plate, and the two sides of the folded fin are respectively connected with the inner surface of the cold plate and the inner surface of the water channel plate through vacuum brazing to form a closed water channel; the lower surface of a ceramic substrate of the TPAK power unit is connected with the upper surface of the cold plate through vacuum reflow soldering to form a continuous metal bonding layer; an independent temperature measuring plate is arranged above the top plastic package shell of the TPAK power unit, and the sensing surface of a temperature sensing element is elastically contacted with the surface of the top plastic package shell of the TPAK power unit through heat-conducting glue, so that a vehicle-grade integrated power brick structure without a flexible thermal interface material, a sealing ring and a fastener compression is realized.