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242results about How to "Improve the quality of operation" patented technology

Preparation method and product of surface modified lithium battery high-nickel positive electrode material

The invention belongs to the field of secondary lithium ion batteries, and discloses a preparation method of a surface modified lithium battery high-nickel positive electrode material. The preparation method comprises the following steps: putting high-nickel positive electrode material into a reaction cavity of an atomic layer deposition system, and vacuumizing the reaction cavity for 5 to 10 s, so that the temperature of the reaction cavity is 140 to 160 DEG C; introducing a reaction source so that the pressure of the reaction cavity reaches 5 to 8 mbar; introducing N2 to take away redundant reaction source in the reaction cavity; introducing water to react with the reaction source, and carrying out surface deposition on the high-nickel positive electrode material to obtain an oxide film; introducing N2 to take away redundant water in the reaction cavity; and repeating the above steps to obtain the surface modified lithium battery high-nickel positive electrode material. The invention also provides the surface modified lithium battery high-nickel positive electrode material prepared by the method, and a positive electrode piece and a lithium ion secondary battery prepared from the material. The positive electrode material has the advantages of simple and practicable preparation method, easily controlled thickness for a cladding layer and the like, and is applicable for large-scale production.
Owner:HUAZHONG UNIV OF SCI & TECH

High shooting speed dual-power gear structure of toy gun

A high shooting speed dual-power gear structure of toy gun disclosed mainly includes a compound gear and an interlocking member. The compound gear has fine gear uniformly distributed on one side and at the circumference thereof, and coarse gear partially and uniformly distributed on the other side and at the circumference thereof with an indentation formed at the portion without gear teeth. The fine gear being driven by a electromotor through a transmission component is capable of driving a piston to compress a piston spring during the rotating process. A gun bolt core tube having an L-shaped hook part is furnished at the outer circumference of the piston. Moreover, a second interlocking projecting pin capable of controlling the power source of the electromotor is furnished on a side of the compound gear. The interlocking member being attached to a side opposite to the second interlocking projecting pin of the compound gear has a first interlocking projecting pin that contacts the L-shaped hook part to drive the gun bolt core tube into the action of bullet loading. By having the first interlocking projecting pin and the second interlocking projecting pin be furnished on opposite sides of the compound gear, the action process and period between their contacting control can be enhanced to absorb the inertia rotation after the electromotor is powered off to avoid the occurrence of repeated bullet loading.
Owner:INCORN HOBBY

Surface modified lithium battery high-nickel anode material and preparation method thereof

The invention belongs to the field of lithium ion secondary batteries, and more concretely relates to a surface modified lithium battery high-nickel anode material and a preparation method thereof. The method includes the following steps: weighing a certain amount of transition metal salt and high-nickel anode material, preparing a transition metal salt solution, making the transition metal salt solution drip into the high-nickel anode material and drying the high-nickel anode material, immersing and drying the high-nickel anode material many times till the whole transition metal salt solution drip into the material, continuing drying the high-nickel anode material and grinding the material, processing the ground material in an air furnace, and finally obtaining the high-nickel anode material the surface of which is wrapped in transition metal oxides. The high-nickel anode material prepared from the above method is used for preparing lithium ion secondary batteries. The surface modified high-nickel anode material enables the first-circle efficiency and the cycle performance of a secondary battery to be greatly improved. Moreover, the preparation method is simple and feasible, the surface modified high-nickel anode material is low in cost and suitable for large-scale production, etc.
Owner:HUAZHONG UNIV OF SCI & TECH

Microwave catalytic remediation method for organic matter-heavy metal compound contaminated soil

The invention belongs to the technical field relevant to soil remediation and particularly relates to a microwave catalytic remediation method for organic matter-heavy metal compound contaminated soil. The microwave catalytic remediation method for the organic matter-heavy metal compound contaminated soil comprises the steps that magnesium salt, ferric salt and aqueous alkali are added into deionized water and then mixed and stirred; turbid liquid is irradiated in a microwave oven; suction filtration is conducted on the turbid liquid after a reaction so that sediment can be separated out, and the sediment is washed and dried; a microwave catalyst is obtained through cooling and grinding after calcination; the microwave catalyst and the contaminated soil are mixed; the mixture is placed in a microwave reactor, and oxygen or air is led into the microwave reactor for a microwave reaction; and gas generated during the reaction is collected at the same time, and thus required remediation of the contaminated soil is completed. By the adoption of the microwave catalytic remediation method for the organic matter-heavy metal compound contaminated soil, the contaminated soil can be remediated in the way that environment protection is facilitated, quality control is convenient and the efficiency is high; and the microwave catalyst is used for adsorbing heavy metal ions in the contaminated soil and degrading organic matter in the contaminated soil, and meanwhile secondary pollution is avoided by collecting waste gas.
Owner:HUAZHONG UNIV OF SCI & TECH +2

Capacity adjusting control method of multi-nose screw compressor

The invention provides a capacity adjusting control method of a multi-nose screw compressor. The capacity adjusting control method solves the problem that the existing multi-nose screw compressor unit in an operation mode is poor in lubrication. The capacity adjusting control method of the multi-nose screw compressor comprises the following steps of 1, starting up and judging whether loading is required; 2, detecting the running time of each compressor before the loading; 3, loading the compressor with the shortest running time; 4, loading the compressor with the second shortest running time; 5, loading gradually and sequentially till the load requirement is met; 6, judging whether unloading is required; 7, detecting the running time of each compressor before the unloading; 8, unloading the compressor with the longest running time; 9, unloading the compressor with the second shortest running time; and 10, unloading gradually and sequentially till the load requirement is met. According to the capacity adjusting control method, for a condition that poor lubrication can occur when the compressor runs in a partial load state for a long time, a controller controls each compressor to act sequentially and adjacently according to the running time, so that oil return of the compressor is good, and the operation quality of the compressor can be improved.
Owner:青岛奥利凯中央空调有限公司

Mobile-terminal-based method for reminding arriving at station of metro

The invention provides a mobile-terminal-based method for reminding arriving at a station of a metro. The method comprises the following steps of: S1: setting an object station by a plurality of users through respective mobile terminals; S2: periodically obtaining a target station set obtained from target stations in mobile terminals of the other users when the first user is within a preset range by a first mobile terminal of a first user; S3, determining a first current station by the first mobile terminal according to the difference set of the adjacent two target station sets; and S4, according to the corresponding target station, the first current station and the metro running line data, determining whether or not the user arrives at a destination, and reminding when the first user arrives at station. According to embodiment of the invention, the metro station information can be determined and reminded to passengers through the unconscious collaboration among the passengers by the smartphone, and the forecasting and the reminding when the metro arrives at station can be accurately realized by the GSM (global system for mobile communication) and the smartphone, so that the mobile-terminal-based method is greatly convenient for the passengers to go out, and the metro operation quality can be improved.
Owner:TSINGHUA UNIV

Remote monitoring system and method for quality of battery of electric car battery replacing station

The invention discloses a remote monitoring system and method for the quality of a battery of an electric car battery replacing station.The system is composed of a car-mounted power battery, a battery replacing station monitoring unit, a car-mounted battery monitoring unit, a remote monitor center and a mobile phone client side.An RFID label is pasted on the car-mounted power battery and is responsible for storing battery factory leaving parameters, belonging battery replacing station parameters, the battery electric quantity and other parameters.The battery replacing station monitoring unit is responsible for reading and writing initial information and use information of the car-mounted power battery, and charges a user through the mileage.The car-mounted battery monitoring unit is responsible for collecting electric quantity consumption, running mileage and the remaining battery electric quantity of the car-mounted power battery and transmitting the manufacturer of the battery, the production date of the battery, the name of the battery replacing station to which the battery belongs, electric quantity consumption, the running mileage and user information to the remote monitor center through a GPRS network.The remote monitor center obtains the quality of the battery by calculating the relation between the electric quantity of the battery and the running mileage, and the aim of remotely monitoring the quality of the battery of the battery replacing station is achieved.
Owner:泽清新能源科技有限公司
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