68results about How to "Improve long-term operational reliability" patented technology

The invention relates to a method for preparing a self-cleaning protective film of a solar cell, which comprises the following steps of: (1) performing hydrolytic polycondensation on tetraethoxysilane, deionized water and ethanol serving as raw materials in a volume ratio of 8-12:4-6:40-50 in the presence of hydrochloric acid serving as a catalyst at the temperature of between 68 and 75 DEG C, and adding EuCl3.6H2O in the reaction process for doping; (2) washing a glass substrate for multiple times with a detergent and the deionized water, putting the glass substrate into absolute ethyl alcohol to perform ultrasonic cleaning for 15 minutes, and drying the cleaned glass substrate at the temperature of 50 DEG C for later use; and (3) coating a film on the substrate at room temperature with a spin coater to obtain the required protective film. The method has a simple process; and the prepared film has super-hydrophilic property, and can effectively improve the transmittance and surface hardness of cover glass within the visible light range, have self-cleaning and physical protection functions on the solar cell, and prolong the service life of the solar cell.

The invention relates to a small high-voltage ignition module power supply, which comprises a power supply circuit encapsulated in a shell, wherein the power supply circuit is welded with a plurality of pins and high voltage output leads and comprises an input control and driving circuit and a high voltage output circuit; and the input control and driving circuit is connected with the high voltage output circuit. The power supply circuit is simple in structure, novel in design and convenient to control; the high-pressure ignition distance is great, and the long-term operation reliability is high; an input end is isolated from a high voltage output end flexibly; and the size is small, the weight is light and the PCB mounting is easy.

The invention discloses a preparing method for a corrosion-resistant liquid cooling heat dissipation cold plate and aims at providing a cold plate preparing method which is free of tedious treatment before welding and has prominent corrosion-resistant capability and long-term work reliability. According to the technical scheme, the two sides of a bottom transverse pipe commonly communicated serve as the starting points respectively, two sets of parallel pipes are longitudinally arranged continuously in a bent manner, and the bending radius of bent circular arc rings on the two longitudinal sides is larger than the distance between every two parallel pipelines; the free ends of each set of parallel pipes are fixedly connected through respective connector flanges; and the two sets of parallel pipes are fixed, clamped and positioned through pipeline clamping tools which are longitudinally arranged at intervals, die positioning plates with screw holes are adopted, wax patterns wrapping runner titanium pipes and connector flange assemblies are clamped between the two die positioning plates, and the runner titanium pipes and the connector flange assemblies are put into a smelting furnace, and a rectangular flat plate is formed through lost foam casting. The preparing method solves the problem that during traditional cold plate welding, a welding seam is prone to cracking, and consequently a cooling agent leaks.

The invention belongs to the technical field of a dry-type high-frequency transformer, and particularly relates to the dry-type high-frequency transformer which can be used for improving insulation performance and reducing local discharging quantity of the transformer and is provided with an insulation structure. By additionally arranging a transition layer having a buffer effect between the winding coil and the insulation layer, favorable linkage between the winding and the insulation layer is achieved, phenomena such as gap and crack between the insulation layer and the winding in the priorart are prevented, and the local discharging level can be effectively reduced; and moreover, an insulation elastic material and an electrostatic shielding material are preferably used as transition layers, a potential risk of large local discharging quantity of the insulation layer at a high-voltage side and a low-voltage side is prevented, the insulation performance of the dry-type high-frequencytransformer is greatly improved, the service lifetime of the dry-type high-frequency transformer is greatly prolonged, and the long-term running reliability of a power electronic transformer device is improved.