7results about How to "Reduce deterioration" patented technology

The invention relates to the field of batteries, in particular to a thiophene compound and a preparation method thereof, an electrolyte and a battery. The structural formula of the thiophene compound is as shown in formula I, specifically, the thiophene compound containing cyano and sulfamido is obtained by carrying out electrophilic aromatic amino sulfonylation reaction on a cyano thiophene compound and an amino sulfonyl chloride compound; the electrolyte comprises a solvent, a lithium salt, an additive and the thiophene compound. The electrolyte provided by the invention comprises the thiophene compound containing the cyano group and the sulfamide group, and the thiophene compound not only can participate in film formation of a positive electrode and a negative electrode, but also can be complexed with transition metal ions dissolved out from the electrolyte, so that the high-temperature performance of the battery is synergistically improved.

A lithium ion secondary battery has an electrode body, a nonaqueous electrolyte, and a rectangular battery case that houses the electrode body and the nonaqueous electrolyte, in the electrode body, a positive electrode including a positive electrode substrate and a positive electrode composite material layer and a negative electrode including a negative electrode substrate and a negative electrode composite material layer are laminated with a separator made of a porous resin interposed therebetween and are wound to be flat, when a spring constant of the lithium ion secondary battery under a load of 316 to 210 N / cm 2 is assumed to be spring constant H, and when a spring constant of the lithium ion secondary battery under a load of 95 to 74 N / cm 2 is assumed to be spring constant L, a ratio L / H of the spring constant L to the spring constant H is 0.34 ≤ L / H ≤ 0.41, and an electrical resistance increase rate before and after a rectangular wave test is 1.17 or less.

The invention discloses a longitudinal spiral HFCVD diamond deposition system and a deposition method.The deposition system comprises a plurality of spiral lamp filaments located on the side of a base body, the spiral lamp filaments are arranged in the vertical direction and distributed at equal intervals in the transverse direction, the two ends of each spiral lamp filament are connected with a pre-stretching structure, and the two ends of each spiral lamp filament are connected with the corresponding pre-stretching structure; one side of the spiral filament away from the substrate is connected with the supporting structure; the pre-stretching structure comprises a plurality of molybdenum elastic pieces distributed at equal intervals in the transverse direction, one end of each molybdenum elastic piece is connected with the end of the spiral lamp filament, the other end of each molybdenum elastic piece is installed on the insulating piece through a fixing screw, and gaps with adjustable sizes are formed between the molybdenum elastic pieces and the insulating piece. The supporting structure comprises a plurality of supporting molybdenum sheets which are distributed at equal intervals in the vertical direction. According to the longitudinal spiral type HFCVD diamond deposition system and method, the deposition performance is remarkably improved through a longitudinal spiral type filament structure, the system reliability and the process stability are enhanced, and large-area uniform deposition can be achieved.

This application relates to a spray system for icing wind tunnel testing, its control method, controller, and medium. This application addresses multiple water supply branches of the spray system for icing wind tunnel testing by training a target prediction model using historical test data under multiple operating conditions. This model pre-calculates the second target opening degree of the outlet regulating valve after the solenoid valve opens the nozzle. Then, based on the on / off state signal of the solenoid valve, the outlet regulating valve is controlled to adjust to the second target opening degree. In this way, the coupling relationship between the opening ratio of the outlet regulating valve before and after the solenoid valve opens the nozzle and the steady-state parameters before the solenoid valve opens the nozzle can be learned under different test conditions. This allows for adaptation to multi-condition icing wind tunnel test scenarios, shortens the time for water supply pressure to stabilize, thereby reducing the deterioration of cloud parameters caused by excessive adjustment time and ensuring the accuracy of icing shape simulation.

This invention discloses a high-strength biomass carbon-containing pellet, its preparation method, and its application, relating to the field of blast furnace ironmaking technology. The pellet comprises the following raw materials by mass fraction: 70%–85% iron ore, 4%–15% binder, 5%–11% biochar, and 1%–3% basic flux. The high-strength biomass carbon-containing pellet of this invention exhibits high strength and good wear resistance. Its high thermal detonation temperature and low thermal detonation index effectively reduce powder generation after entering the blast furnace. The high-strength biomass carbon-containing pellet exhibits superior reducibility, reductive expansion, and low-temperature reductive pulverization performance compared to traditional sintered ore, pelletized ore, and lump ore. It can be directly used as blast furnace feedstock, reducing the amount of coke used in blast furnace smelting, thereby reducing ironmaking costs and CO2 emissions, resulting in significant economic, social, and ecological benefits.

The utility model discloses a rotary kiln combustor, which belongs to the technical field of rotary kiln combustors and is characterized in that a pre-combustion chamber is arranged at the flame end of a combustor cavity, a primary cooling air duct is arranged outside the combustor cavity, a secondary cooling air duct is arranged outside the pre-combustion chamber, and the primary cooling air duct is communicated with the secondary cooling air duct. An air inlet is formed in the first-stage cooling air duct and connected with cooling air supply equipment. By arranging the pre-combustion chamber and the cooling air system, the problems of unstable combustion of pulverized coal in the rotary kiln, disturbance of flue gas and dust, oxygen consumption and the like are solved, and the flame stability during combustion is enhanced.

The application discloses a kind of on-line monitoring method of shield machine cutterhead mud cake, comprising: arranging multiple groups of temperature sensors on the surface of shield machine cutterhead;Establish mud cake tunneling parameter database and temperature database under different strata, establish temperature database under different strata according to the temperature data of the surface of shield machine cutterhead under different strata;Obtain temperature variation prediction curve set;Judge.This application combines temperature sensor and BP neural network algorithm, after obtaining the corresponding temperature variation prediction curve subset of different strata, real-time acquisition of the temperature of shield machine cutterhead and the internal residue soil of soil bin after excavation, selects the corresponding temperature variation prediction curve subset of different strata, compares and analyzes the corresponding temperature variation prediction curve in temperature variation prediction curve subset with the collected temperature data, determines whether cutterhead surface is mud cake, can adapt to the tunneling environment of different strata, and can accurately and effectively reflect cutterhead mud cake phenomenon, guarantee the normal tunneling of shield machine.