45results about How to "Guaranteed practical value" patented technology

The invention relates to a silicon-based composite negative electrode material for a lithium ion battery, wherein a silicon-containing material with the size of less than 0.3 [mu]m is dispersed uniformly in a porous silicon oxygen carbon skeleton. The invention also provides a method for preparing the composite negative electrode material, wherein the method includes the steps: dispersing the silicon-containing material in a liquid organo-siloxane monomer, successively adding an ethanol-water acidic solution, a curing agent and an amorphous carbon source precursor solution into the dispersion liquid, and carrying out heat preservation to make the mixed solution cured; carrying out high temperature calcination on the precursor after curing in a protective atmosphere, to obtain a bulk silicon-based composite material; and crushing the bulk silicon-based composite material by ball milling to obtain the silicon-based lithium ion battery negative electrode material having various different particle sizes. The silicon-containing material in the silicon-based composite negative electrode material is firmly and evenly distributed in the porous silicon oxygen carbon skeleton, and the structure can effectively bear a volume effect brought by embedding and stripping of lithium and has the characteristics of adjustable charge/discharge specific capacity and high electrochemical cycle stability.

The invention provides a MOS transistor radio-frequency circuit simulation macro model and a parameter extraction method thereof. The simulation macro model comprises a MOS transistor simulation model, a gate resistor RG connected between a transistor gate node and a circuit grate node in series, a capacitor Cjun.s and a resistor Rjun.s and a capacitor Cjun.d and a resistor Rjun.d respectively indicating the a source electrode and a substrate, as well as the junction capacitance and parasitic resistance therebetween, and two resistor Rbulk and Rwell respectively indicating bulk resistance and trap resistance of the transistor. The four resistors Rjun.s, Rjun.d, Rbulk and Rwell are connected at one point, and indicate the parasitic resistance introduced by the substrate with a T-shaped structure. The invention also provides a method for extracting parameters of each element of a substrate network structure in the macro model using the equivalent circuit Y-parameter analytic method. The invention simulation macro model is suitable for frequency up to 20GHz, improves model accuracy of the MOS transistor in 20GHz high frequency domain, and expands the frequency application range of CMOS circuit EDA design.

The invention discloses a lithium ion battery silicon metal composite negative electrode material and preparation method thereof. The composite negative electrode material is prepared by mutually filling silicon-containing material SiOx and metal oxide-containing material, then coating with amorphous carbon and dispersing in graphite material, wherein x is greater than or equal to 0 and less than or equal to 2, and y is greater than or equal to 0 and less than 4. The stoichiometric equation of the composite negative electrode material is SiMzOw-aC. The preparation method is as follows: (1) weighting a certain amount of a silicon-based SiOx material, a metal oxide-containing material MOy, organic carbon and a graphite precursor raw material for screw extrusion for 0.5-24 h to fully mix the precursor material; and (2) calcining the mixed precursor raw material in a protective atmosphere at 600-1400 DEG C for 0.5-12 h, and performing post-processing to obtain the silicon metal composite negative electrode material. The silicon metal composite negative electrode material has good electrochemical stability. The preparation method is simple, the used equipment is general industrialization equipment, and mass production is easy.

The invention discloses a silicon-based composite anode material for a lithium ion battery and a preparation method thereof. The anode material comprises a graphite skeleton and an amorphous carbon layer which coats the graphite skeleton. The graphite skeleton is filled with a silicon material coated with a carbon-containing structure. The silicon material and the graphite skeleton are combined through a loose carbon material. The preparation method at least comprises the following steps: (1) preparing the silicon material coated with the carbon-containing structure; (2) preparing spherical particles with graphite as the main body; (3) coating the spherical particles with the amorphous carbon layer; and (4) granulating. According to the invention, the electric insulation problem of silicon anode due to its volume change can be solved, and it can be guaranteed that silicon active component can always be electrically contacted with a current collector during the charge-discharge cycle process. Meanwhile, huge stress effect caused by volume expansion/shrinkage of the active material silicon is further buffered. Then, the composite material has characteristics of high electrochemical cycle stability and regulable specific capacity.

The invention provides a sterilization assembly, a cooking utensil and a sterilization method. The sterilization assembly comprises a shell, a control panel and an ultraviolet lamp. The shell is detachably arranged on the cooking utensil. The shell is connected to the cooking utensil in a clamped mode; and the control panel is connected with the shell and is located in the shell. The ultraviolet lamp is electrically connected with the control panel, and the control panel can control the turning on and/or turning off of the ultraviolet lamp. The ultraviolet lamp is arranged, and the ultravioletlamp is used for sterilizing food in the cooking utensil, the sterilization efficiency can be effectively improved, it is guaranteed that the food can be stored in the cooking utensil for a long time, especially the cooking utensil with an appointment function can be appointed for a long time, the deterioration of the food in the appointment time is avoided, and the maximum appointment time of the cooking utensil is greatly prolonged.

The invention discloses an intelligent control stadium water supply and drainage system and a control method thereof, and relates to the technical field of building equipment. The system comprises a monitoring management center and a water supply and drainage subsystem; the monitoring management center comprises a control subsystem; the control subsystem comprises a monitoring unit, a central processing unit, a debugging unit, a storage unit, a video image acquisition unit, a detection unit, a communication unit and a terminal; the monitoring unit is sequentially connected with the central processing unit, the communication unit and the water supply and drainage subsystem through a data transmission module; the water supply and drainage subsystem comprises a purification unit, a water storage tank, a water distribution tank, a water pump, a sewage recovery module and a rainwater collection module. According to the invention, the water supply and drainage subsystem is monitored in realtime by setting the control subsystem. The sewage recovery module and the rainwater collection module are arranged. The monitoring of the water supply and drainage subsystem in the stadium is effectively improved. The self-sufficiency of the water supply is realized. The water supply and drainage subsystem is suitable for popularization.

The invention discloses a beauty skin care sprayer and a system thereof, which relate to the technical field of beauty instruments. The beauty skin care sprayer comprises a base with a first inner chamber and a top seat with a second inner chamber. A shell is fixedly inserted on the peripheral side of the top seat. One end surface of the shell is provided with a fog outlet hole. A liquid outlet nozzle is fixedly inserted into the other end surface of the shell. One end of that liquid discharge nozzle is connected with a peristaltic pump through a liquid delivery pipe. An aire outlet nozzle isfixedly inserted into the circumferential side of the shell. One end of that air outlet nozzle is connected with an air pump through an air delivery pipe. An air inlet pipe is further fixed on circumferential side of the shell. A digital pressure gauge is connected to one end of the air inlet pipe. The peristaltic pump and the air pump are arranged in a cooperative manner, and then the skin careliquid flowing out of the liquid outlet nozzle forms the conical structure and generates the jet which breaks up into micro liquid droplets by the instability of the jet when the jet is ejected from the fog outlet hole, thereby realizing the atomization of the skin care liquid; and the beauty skin care sprayer and a system thereof have a high market application value.

The invention discloses a solid electrolyte material with low interface impedance and a preparation method of the solid electrolyte material. The material comprises a major structure with a chemical formula Li1+x+yAlx(Ti,Ge)2-xSiyP3-yO12, and lithium iodide dispersed in the major structure, wherein the major structure of the material is an NASICON fast ion conductor; x is greater than 0 and less than or equal to 0.4; y is greater than 0 and less than or equal to 0.1; and the mass percentage a of lithium iodide in the material is greater than 0 and less than or equal to 10%. The preparation method of the material comprises the following steps of (1) synthesizing the major structure: selecting raw materials according to a stoichiometric equation of the solid electrolyte material and performing planet ball milling, cold pressing and a solid-phase reaction to obtain the major structure of the dense flaky solid electrolyte material, and (2) performing modification treatment: soaking a sample obtained in Step (1) in a lithium iodide aqueous solution, performing heating for some time, taking the sample out, cleaning the sample and performing vacuum drying treatment. According to the solid electrolyte material and the preparation method, a lithium iodide material with lithium ion conduction property is added to a solid electrolyte layer, so that the interface impedance is reduced, a three-dimensional ion conduction network is formed, and the ion conductivity is improved.

The invention relates to the technical field of eggbeater and discloses a manually adjustable stepless speed change eggbeater. The eggbeater comprises an eggbeater shell, wherein a stirring rod is arranged at a left end of the eggbeater shell, a motor is fixedly connected to the interior of the eggbeater shell, and a gearbox fixedly connected with an output shaft of the motor is arranged at a left end of the motor; a right end of the stirring rod is fixedly connected with a connecting rod, the connecting rod is movably sleeved with an installation tenon block, a left wall of the eggbeater shell is provided with an installation tenon groove matched with the installation tenon block, and the connecting rod is provided with an installation mechanism. According to the stepless speed change eggbeater capable of being manually adjusted, by arranging the mounting mechanism, stirring rods can be correspondingly adjusted and replaced under different use conditions, so practicability of the eggbeater is improved, the situation that different types of eggbeater bodies need to be used is avoided, a practical value of the eggbeater is guaranteed, The stirring rod is relatively simple to mount or dismount, so use efficiency of the eggbeater is improved.

The invention discloses an industrial coal slag detection device, which comprises a frame, a support plate is arranged at the bottom of the frame, a storage box is provided on the top surface of the support plate, a power supply is provided on the inner bottom surface of the storage box, one side of the power supply is located on the inner bottom surface of the storage box A controller is provided, a detection device body is provided on one side of the top surface of the frame, a first support frame and a second support frame are symmetrically arranged on one side of the detection device body and on the other side of the top surface of the frame, the top of the first support frame and the The top of the second support frame is connected by a horizontal plate, the top surface of the horizontal plate is provided with a fixed seat, one side of the fixed seat and the top surface of the horizontal plate are provided with a first motor, the output shaft of the first motor is provided with a first gear, the first gear A second gear is meshed on the top, and a plurality of connecting rods are symmetrically arranged on the bottom surface of the second gear. The invention has the beneficial effects that: the detection device has a simple and reasonable structural design, can accurately detect the components of the coal slag, can greatly improve the utilization rate of the coal slag, and is suitable for popularization.

The invention discloses an energy-saving environment-friendly street lamp and relates to the field of industrial machinery. The energy-saving environment-friendly street lamp comprises a lamp post and a lamp shade, the lamp shade is arranged at the top end of the lamp post, the energy-saving environment-friendly street lamp comprises a light emitting module and a power supply module, the power supply module is a solar battery, the solar battery comprises a solar battery panel and a storage battery, the solar battery panel converts solar energy into electric energy, the electric energy is stored in the storage battery, and the storage battery provides electric energy for an LED. The energy-saving environment-friendly street lamp realizes to convert the solar energy into electric energy and convert the electric energy into light energy, the whole process is energy saving, environmental friendly and pollution free, and accordingly the street lamp is very environmental friendly, and the street lamp is good for the sustainable development of resources.

The invention discloses an auxiliary device for improving elevator car operation stability, and relates to the technical field of elevators. The auxiliary device comprises a hoistway with a car body;slide rails are mounted on opposite inner side walls of the hoistway; first groove ways are formed in near surfaces of the two slide rails; second groove ways are formed in opposite side surfaces of the first groove ways; mounting grooves are formed in one surfaces of the first groove ways; fixed bases are fixed on opposite side surfaces of a car body, and are rotationally connected with rotatingshafts; gears are fixed on the rotating shafts, and are engaged with racks; the rotating shafts are inserted in the second groove ways; the gears are arranged in the first groove ways in a cooperatingmanner; and the racks are mounted in the mounting grooves. As the slide rails and the fixed bases are respectively mounted on the hoistway and the car body, through cooperation of the gears and the racks, the elevator operation stability in old buildings is further improved, the fear sense in the hearts of passengers is effectively reduced, and the auxiliary device is suitable for popularization.

The invention discloses an adjustable landscape bridge device for a garden and relates to the technical field of landscape devices. The adjustable landscape bridge device comprises a supporting base,wherein lifting mechanisms are arranged on the lower surface of the supporting base side by side; a base plate is arranged on the upper surface of the supporting base; side supporting plates are arranged on one opposite sides of the base plate; grooved plates are arranged on the other opposite sides of the base plate; the grooved plates are connected with the side supporting plates in a sliding manner; and side surfaces, away from each other, of the two side supporting plate are connected with solar panels respectively through rotating mechanisms. According to the invention, a distance betweena supporting plate and a water surface is monitored in real time by arranging a liquid level sensor, the supporting base is driven to move vertically by using the lifting mechanisms so as to keep thedistance between the supporting plate and the water surface unchanged all the time, and electric energy is self-sufficient by using the solar panels and a hydroelectric generator, so that the marketvalue of the bridge device is effectively increased, the use requirements of users nowadays are met and the landscape attractiveness is improved.

The invention discloses anti-theft equipment for education documents based on big data. The anti-theft equipment comprises an equipment body, wherein a fixed seat is embedded in the bottom end of the equipment body, and a sealing cabinet door is movably hinged to the surface of the equipment body; a locking block is fixedly arranged on the surface of the sealing cabinet door, and an adaptive round hole is formed in the surface of the locking block; a stable top plate is fixedly arranged at the top end of the equipment body; a linkage assembly is rotationally connected to the surface of the inner wall of the sealing cabinet door; and a driving structure is attached to one end of the linkage assembly. According to the anti-theft equipment, by arranging a limiting assembly and utilizing the limiting and clamping functions of an air cushion of the limiting assembly, a fixed long plate is not prone to sliding out of the interior of the limiting assembly when the fixed long plate is stably attached to the interior of the limiting assembly, then the use effect of the fixed long plate is guaranteed, and the use value of the equipment is further increased; and the accident problem that the fixed long plate is opened by mistake is avoided, and the adaptation range of the equipment is further widened.