55results about How to "Achieve dispersion" patented technology

The invention discloses a spectrum beam combination device for realizing twice diffraction by using the transmission grating of a plated reflecting film. The spectrum beam combination device comprises a semiconductor laser unit light source, a slow-axis collimated column lens, a conversion lens, a transmission grating and an output coupling mirror. The transmission grating of the back plated reflecting film is used as a diffraction element, namely the reflecting film is plated at the back of a grating surface, so that the dispersive power of the grating can be doubled by an incident beam through the diffraction of the transmission grating twice. According to the spectrum beam combination device, the restriction that the dispersive power of the diffraction grating is limited in traditional spectrum beam combination is overcome, the number of beam combination elements can be increased in the gain line width of the material and the high-efficiency diffraction wavelength range of the grating, and the output power is obviously improved, or the length of a resonant cavity can be shortened when certain output spectrum width is guaranteed, so that the structure of a laser unit is compacter, and the mode of the laser unit is stabler.

The invention belongs to the technical field of nano magnetic materials, and particularly relates to superfine high-dispersion super-paramagnetism ferrate nano particles and a preparation method thereof. The nano particles are apparently high-dispersion spherical particles, the average particle size is a few nanometers, and the nano particles are uniform in size distribution, and each particle has a cubic spinel structure. Anhydrous metal chloride, ethanol, oleic acid and sodium hydroxide are used as reactive raw materials, and are subjected to solvent thermal reaction to obtain pure crystallized nano ferrite powder. According to the preparation method, NaCl crystals which are automatically generated through reaction at room temperature are coated on nano-crystals, so that the nano-crystals are restricted to continuously grow up during solvent thermal reaction. Moreover, the aim of dispersing the nano particles is fulfilled by using a steric hindrance of the oleic acid to the nano particles; and the saturation magnetization of a product is changed by using different proportions of doping ions and iron ions in the raw materials. The superfine high-dispersion super-paramagnetism ferrate nano particles are suitable for biomedical application such as cell marking, heat treatment, magnetic resonance imaging and the like.

The invention relates to feeding equipment, in particular to fodder feeding equipment for ornamental fish for gardens. The fodder feeding equipment for the ornamental fish for the gardens is capable of realizing feeding in a dispersed mode. The fodder feeding equipment provided by the invention comprises a mounting plate, a first sliding rail, a first sliding block, a support rod, a connecting rod, a frame body, a second sliding rail, a second sliding block, a first baffle plate, a connecting block, a first spring and the like, wherein the mounting plate is arranged at the top of the left wallof a water pool, the first sliding rail is embedded in the center of the top of the mounting plate, the first sliding block is connected to the first sliding rail in a sliding mode, the support rod is connected to the top of the first sliding block, the connecting rod is connected to the top end of the support rod, and the frame body is connected to the right end of the connecting rod. Accordingto the fodder feeding equipment, the effect of carrying out feeding in a dispersed mode is achieved, the frame body continuously rotate clockwise and counterclockwise so that fodder can be fed in a more dispersed mode, a plastic ball continuously knocks on the frame body so that the fodder in the frame body can drop down more quickly, and first through holes can also be prevented from being blocked.

The invention discloses a preparation method of dispersant modified iron nanoparticles. According to the preparation method, high polymer, a cationic surfactant or anionic polymer electrolyte is used as a dispersant to perform surface modification on particles in a preparation process of the iron nanoparticles so as to prepare the dispersant modified iron nanoparticles. The iron nanoparticles prepared by the method have good dispersion stability; the hard agglomeration of the iron nanoparticles in an aqueous medium is reduced; the dispersion degree of the iron nanoparticles is increased; the method can also be used for performing dispersion modification on iron base bimetallic particles; and the method can be applied to pollution remediation of chlorinated organic compounds in an environmental medium and has broad application prospect.

An ultra-compact spectral light field camera system based on a super-structured lens array comprises a parallel light source lens, linear polaroids, quarter-wave plates, objective lenses, the super-achromatic super-structured lens array and a monochromatic camera which are arranged in sequence. The super-achromatic super-structured lens array is arranged between two pairs of linear polaroids, thequarter-wave plates and objective lens composition structures which are arranged in sequence. The distance a from the image plane of the main lens to the super-structured lens array, the distance b from the super-structured lens array to the re-imaging plane and the focal length f of the super-structured lens meet a certain relation, and the camera is arranged on the image plane and used for receiving images; the super-achromatic super-structured lens array is a two-dimensional lens array plane formed by arranging super-achromatic super-structured lenses on a plane according to a certain rule;the super-achromatic super-structured lenses with off-axis focusing properties are designed, and spectral dispersion is realized by utilizing the change of the focusing positions of the super-achromatic super-structured lenses under different wavelengths.

The invention discloses a method for embedding and extracting digital video information based on FLV (flash video) video structural feature in the technical field of information security, which adopts a method based on the FLV video structural feature to embed / extract hidden information to realize the real-time operation of video information hiding. The invention has high flexibility because the embedded information capacity can be determined according to the magnitude of actual hidden data as required and strong self-adaption capability because the capacity is determined by needs and can be used for anaphase arithmetic and data improvement because extensible spaces are left in a data area.

The invention provides a method for preparing sintered neodymium iron boron through grain boundary diffusion of heavy rare earth. The method comprises the steps that heavy rear earth matter and organic solvent are mixed to prepare turbid liquid; the turbid liquid is subjected to dispersion treatment in neodymium iron boron alloy powder, and neodymium iron boron powder is obtained; and after being heated, cooled and sieved, the neodymium iron boron powder is subjected to compression molding, sintering and aging treatment, and the sintered neodymium iron boron is obtained. According to the method, the heavy rear earth matter and the neodymium iron boron alloy powder are sintered, so that the heavy rear earth matter and the neodymium iron boron powder are mixed evenly, the preparation process is simple, the using amount of the heavy rear earth matter is small, and the utilization rate of the heavy rear earth matter is high; meanwhile, the coercivity and temperature resistance of the sintered neodymium iron boron are improved, and the consistency of properties of the sintered neodymium iron boron is guaranteed.

The invention discloses a modified carbon nano tube and a preparation method thereof. The method comprises the following steps of: dissolving polyaniline in dimethyl sulfoxide; dripping hyperbranched polysiloxane which is subjected to blocking treatment and contains epoxy groups, and hydrochloric acid to obtain hyperbranched polyaniline; adding hyperbranched polyaniline and a carbon nano tube into dimethyl sulfoxide; precipitating in methanol; and performing suction filtration and washing to obtain the modified carbon nano tube, wherein a hyperbranched polyaniline conducting layer is coated on the surface of the carbon nano tube, and the electric conductivity of the modified carbon nano tube can be controlled by adjusting the content of the coating layer, so that a conductive and dielectric material which has high dielectric constant and low dielectric loss can be prepared, and the performance of the material can be controlled possibly. The hyperbranched polysiloxane contains epoxy groups, hydroxyl and other active groups, so good basis is founded for compounding of the modified carbon nano tube and resin, and the research and the development of novel functional materials. The provided modified carbon nano tube also has the characteristics that the preparation method is high in applicability, and an operation process is simple.

The invention discloses antibacterial high barrier food wrapping film and a preparation method thereof. The film is prepared from ethylene vinyl alcohol copolymer, polyurethane, polyvinyl acetal, a compound silicate mineral additive and a silane coupling agent KH-550. The antibacterial high barrier food wrapping film takes the ethylene vinyl alcohol copolymer, the polyurethane, the polyvinyl acetal and the compound silicate mineral additive as materials of the wrapping film, based on the ethylene vinyl alcohol copolymer, the polyurethane, the polyvinyl acetal, the compound silicate mineral additive and other materials are added, the blending technology is adopted, and the wrapping film is obtained through an extrusion mechanism, so that the antibacterial performance, barrier performance and other performance of the wrapping film are greatly improved.

The invention provides a hyperbranched macromolecule dispersing agent used for a disperse dye. A constitutional formula of the hyperbranched macromolecule dispersing agent is as follows, wherein m is larger than or equal to 1, n is larger than or equal to 1, and relative molecular mass is 800-5000. With the adoption of the hyperbranched macromolecule dispersing agent, unique molecular structures and characters of a hyperbranched polymer are used and aromatic naphthoic acid and the like are adopted to modify the hyperbranched polymer to obtain the hyperbranched macromolecule dispersing agent for the dispersing dye. Compared with the existing dispersing agent for the dispersing dye, the hyperbranched macromolecule dispersing agent has excellent dissolving and dispersing effects.

The invention discloses a dispersant of a high-wax content thick oil wax crystal and a high-wax content thick oil asphaltene. The dispersant is prepared by enabling long-chain alkylphenol and 1,2-dibromoethane to react to generate an intermediate, and sulfonating the intermediate by a chlorosulfonic acid to form the final product. The dispersant is an organic compound which contains a nonpolar alkyl functional group and a polar ether group and sulfophenyl group functional group. The formula of the dispersant is shown in the specification, wherein n is a natural number and is greater than or equal to 8 and smaller than or equal to 14. The temperature resistance of the dispersant is high, the resistant temperature is up to 160 DEG C, and the defect of poor temperature resistance of the existing wax crystal and asphaltene dispersant is overcome; meanwhile, the dispersant disclosed by the invention has very good dispersion effect on the wax crystal and the asphaltene, and when the using amount is 200ppm, solidifying point of a high-wax content thick oil with over 20 percent of wax content can be reduced to 8 DEG C or more, and solubility of high-wax content thick oil asphaltene can be up to 40 percent or more. Therefore, the dispersant disclosed by the invention can be widely applied to on-site exploitation and conveying of high-wax content thick oil.

The invention discloses a method for preparing Cu / N co-doped TiO2 nano-powder on the basis of a dried gel-hydrothermal method. The method for preparing the Cu / N co-doped TiO2 nano-powder on the basisof the dried gel-hydrothermal method comprises the following steps of (1) solution preparation: a solution A: mixing butyl titanate and absolute ethyl alcohol and mechanically and uniformly stirring the butyl titanate and the absolute ethyl alcohol at a room temperature to form a transparent solution; a solution B: accurately weighing copper nitrate and urea and dissolving the copper nitrate and the urea in a mixed solution of tri-distilled water, absolute ethyl alcohol and concentrated nitric acid solution; (2) soil preparation: slowly dripping the solution B into the solution A by using a peristaltic pump to form a soil; (3) gel solution; (4) dried gel-hydrothermal process: adding dried gel powder to distilled water at 60-220 degrees centigrade; placing an obtained mixture in a reactor;sealing the reactor and putting the reactor in a blowing dry box, and carrying out hydrothermal reaction for 10-14 h; and (5) after-treatment. The method for preparing the Cu / N co-doped TiO2 nano-powder on the basis of the dried gel-hydrothermal method, disclosed by the invention, has the advantages that the purposes of dispersing particles and increasing the specific surface area can be achieved,and mixed crystals of anatase and brookite can also be prepared.

The invention discloses a heat dissipation mechanism for new energy automobile battery management. The heat dissipation mechanism comprises a mounting base and a controller; rubber columns are arranged at the four corners of the mounting base; annular grooves connected with one another are formed in the top of the mounting base; protective air bags matched with the rubber columns are arranged on the outer side of the mounting base; a cover plate is arranged at the tops of the annular grooves; heat dissipation through openings are formed in the four corners in the cover plate; and air cooling heat dissipation assemblies are arranged in the middle portions of the bottoms of the annular grooves. Through mutual cooperation of heat-conducting water-cooling assemblies, a battery pack is annularly wound around the clinging position of the battery pack and a heat-conducting silica gel sheet, so that the actual heat dissipation heat of the battery pack is absorbed and permeated at the first time; under the circulating water-cooling cooling of water in a circulating water tank, the functions of heat absorption relieving and heat dissipation cooling of the outer wall of the device are provided; and a cooling effect enabling heat of the device to be dissipated outside is provided.

The integral catalyst reaction and continuous separation apparatus includes inclined cuboid reactor of magnetic conducting material; two magnet combinations near the upper and lower surfaces of the reactor separately and with magnets capable of moving up and down; feeder connected to the upper end of the reactor and discharge pipe connected to the discharge port in the lower end of the reactor and with one baffle suspended over the discharge pipe; granular regenerator connected between the discharge pipe and the feeder; and two rotating rollers with opposite rotation directions and with annular magnetic roller comprising two hemi-ring magnets installed. Inside the apparatus, superfine magnetic grains can form wave motion to reach stirring effect for simultaneous reaction and separation.

The invention relates to a modified carbon nanotube and a preparation method thereof. The preparation method comprises the following steps: dissolving polyaniline in dimethylsulfoxide, dropwisely adding hyperbranched polysiloxane containing epoxy group, and adding hydrochloric acid to obtain hyperbranched-polysiloxane modified polyaniline; and adding the hyperbranched-polysiloxane modified polyaniline and carbon nanotube into dimethylsulfoxide, precipitating in methanol, carrying out vacuum filtration, and washing to obtain the modified carbon nanotube. The hyperbranched-polysiloxane modified polyaniline conductive layer is coated on the surface of the carbon nanotube, and the content of the coating layer can be regulated to control the conductivity of the modified carbon nanotube, thereby providing possibility for preparing conductive and dielectric materials with functions of high dielectric constant, low dielectric loss and the like as well as regulating and controlling properties. The hyperbranched polysiloxane contains epoxy, hydroxy and other active groups, and thus, lays favorable foundation for research and development of modified carbon nanotube-resin composite and novel functional materials. The modified carbon nanotube provided by the invention has the characteristics of wide preparation method applicability and simple operating technique.

The invention relates to a vehicle passenger compartment, particularly relates to a separable type explosion-proof off-road vehicle passenger compartment, and solves the problems of the existing explosion-proof off-road vehicle that contradictions between a protection capability and other performances of a vehicle cannot be better balanced. The separable type explosion-proof off-road vehicle passenger compartment is composed of a front deck, a tail deck, a left side deck, a right side deck and a bottom deck, wherein the bottom deck is in a continuous V-shaped structure; the left side deck, the right side deck and the bottom deck are connected in the way that the bottom deck covers the side deck and double faced welding is adopted and are connected with other parts of the vehicle through fastening pieces. With the adoption of the continuous V-shaped structure, the aim of dispersing detonation waves can be reached and the energy of the detonation waves absorbed by the passenger compartment is reduced. The side deck and the bottom deck of the passenger compartment are connected in the way that the bottom deck covers the side deck and the double faced welding is adopted. The structure disclosed by the invention can prevent explosion energy from cracking a welding line of the part in a landmine explosion process, so as to prevent the detonation waves from entering the vehicle.

The invention relates to a gel-free needle punching absorption core. The core comprises a surface layer nonwoven layer, an intermediate layer and a bottom layer nonwoven layer, wherein the intermediate layer comprises one or more cotton fiber layers, and one or more high-water-absorption resin granule layers; and the core is formed through one or more needle punching working procedures. Through aneedle punching technology, bottom layer nonwovens and cotton gridding cloth are interwoven and combined, and a conventional composite core gelatinizing technology is not used, so that existence of chemical substances in products is reduced again, and the core does not contain a melt adhesive, and is environmental-friendly.

The invention discloses a mid-infrared band ultra-short pulse spectrum detection device, which is characterized in that an optical signal receiving module, a signal intensity adaptive module, a dispersion management module and a signal detection module are arranged on the same collimation optical path in sequence and form a feedback loop with a control feedback module; input light generated by aninput signal light source passes through the optical signal receiving module. The input light is coupled into a dispersion management module through an input collimator, and one path of output light is split from the input light through a beam splitter I to be coupled into a control feedback module; independent control of dispersion intensity and non-linear intensity can be realized, wherein the dispersion management module is used to realize linear conversion from an optical signal frequency domain to a time domain by utilizing a dispersion Fourier transform technology guided by large group velocity dispersion and low nonlinear characteristics of micro-nano optical fibers; finally, measurement of ultrashort pulse sub-picosecond magnitude transient characteristics can be realized, and timedomain and frequency domain information can be accurately obtained.

The invention discloses a screening device for a waxberry juice production line, and relates to waxberry juice production devices. The screening device for the waxberry juice production line aims to solve the problem that manual screening of the waxberry by workers is low. The technical scheme point is that the screening device for the waxberry juice production line comprises a rack and a feedingplatform, wherein the feeding platform is arranged in parallel with the rack; and the rack is rotationally connected to a columnar channel, a plurality of screening grooves are formed in the columnarchannel in a penetrating mode, the columnar channel is obliquely arranged, and one higher end of the columnar channel is adjacent to the feeding platform. According to the screening device for the waxberry juice production line, the workers do not need to manually screen the waxberry, so that the screening efficiency of the waxberry is effectively improved, and the technical effect of being suitable for large-scale industrial production is achieved.

The invention discloses an unsized needled absorption core body method and device. The device comprises an opener, a first vacuum cotton feeding machine, a first carding machine, a first lapping machine, a duster, a barbing machine, a second lapping machine, a duster, a positive needling machine, a drying box, a compounding machine and a winding machine which are in sequential connection, and further comprises a second vacuum cotton feeding machine connected with the opener, wherein the second vacuum cotton feeding machine is connected with a second carding machine, and the second carding machine is connected with the second lapping machine. A core body produced by the device has the high absorption property and the strong flow guiding property of a wood pulp core body and the advantages of an ultra-thin and continuous layer of a compound core body; and through interweaving of cotton and non-woven cloth, the purpose of unsizing is achieved on the premise of ensuring the product qualityto be excellent.

The invention provides a non-pickling salt-free high-absorption chrome tanning process method for leather. The method comprises the following steps: step 1, weighing and metering; step 2, soaking in water; step 3, liming; step 4, washing with water; step 5, pre-deliming; step 6, deliming and softening: adding 0.5-1 time of 30 DEG C water, adding 0.8% of a deliming agent and 0.2% of a degreasing agent, adding sulfuric acid to adjust the pH value to 3.5, and adding 0.5% of softening compound enzyme and 0.5% of an auxiliary agent; step 7, washing with water; step 8, chrome tanning; step 9, adding acid: adding formic acid and rotating for 30 minutes, wherein the use amount of the formic acid is 0.4-0.5% of the tare weight of the raw materials; step 10, adding acid for several times; the method has the characteristics that the production cost is saved, the environmental pollution is reduced, and the quality index of a finished product is not reduced by promoting chrome tanning absorption.

The invention discloses an intelligent agricultural novel hydroponics management system, and belongs to the technical field of agricultural novel hydroponics. The intelligent agricultural novel hydroponics management system involves a hydroponics box, wherein a plurality of vertical oblong holes are formed in the symmetrical inner walls of the hydroponics box, and horizontal balance rods are vertically and slidably arranged in the oblong holes; and floating plates are fixedly arranged at the ends, located on the inner side of the hydroponics box, of the balance rods on the same side, spring transverse plates are fixedly arranged at the ends, located on the outer side of the hydroponics box, of the balance rods on the same side, and guide rods are vertically and slidably arranged in the centers of the spring transverse plates. The intelligent agricultural novel hydroponics management system solves the problems that nutrient solution in the hydroponics box usually has certain volatility along with the change of time, but an existing hydroponics box usually adopts a planting mode that the height of a hydroponics plant is fixed, the liquid level height is reduced after the nutrient solution is evaporated, people are busy in work for a long time, the nutrient solution is usually forgotten to be added, the rhizomes of the hydroponics plant are exposed out of the water surface, and the hydroponics plant grows slowly in water shortage and even dies.

The invention provides a low-chromium high-absorption tanning method. The low-chromium high-absorption tanning method comprises the following steps: step 1, weighing and metering: weighing raw material leather as a material metering basis for subsequent procedures of soaking, liming, washing, pre-deliming, deliming, softening, pickling, tanning and the like; step 2, soaking: adding water which submerges the raw leather into the raw leather; step 3, liming; step 4, washing with water; step 5, pre-deliming; step 6, deliming and softening: adding 0.5-1 time of 30 DEG C water, adding 0.8% of a deliming agent and 0.2% of a degreasing agent, adding sulfuric acid to adjust the pH value to 3.5, and adding 0.5% of softening compound enzyme and 0.5% of an auxiliary agent; step 7, pickling and tanning: adding 1.5% of a pickling aid, rotating for 60-90 minutes, adding 2-3% of a chrome tanning agent, rotating for 60-90 minutes, adding 1-1.5% of a tanning aid, and rotating for 60-90 minutes; the method has the characteristics of reducing environmental pollution and ensuring that the quality index of a finished product is not reduced.

The invention relates to a preparation method of a cement superplasticizer, which uses cement superplasticizer preparation equipment, the cement superplasticizer preparation equipment comprises a baseand a drying device, and the drying device is arranged on the upper surface of the base. According to the invention, the following problems existing in the preparation of the lignosulfonate water reducing agent at present are solved: when lignosulfonate water reducing agent liquid sprayed by a spraying device is subjected to drying treatment, the crystallized lignosulfonate water reducing agent formed after drying is not scraped and collected in time; the accumulation of crystallized water reducing agent is too thick, which affects the drying effect of subsequent water reducing agent liquid,the dried crystallized water reducing agent is directly collected without being ground and crushed again, so that the mixing effect of the water reducing agent and the concrete is influenced during use due to overlarge crystallized water reducing agent particles, therefore, the two components cannot be fully mixed, and the effect of the water reducing agent cannot be exerted.

The invention discloses a bean germ smashing device which comprises a device body. The device body is of a hollowed structure, and a smashing cavity is formed in the device body. A U-shaped bearing plate is arranged in the smashing cavity. The left side and the right side of the U-shaped bearing plate are both fixedly connected with the side wall of the smashing cavity. A concave placing groove isformed in the upper end of the U-shaped bearing plate. The middle of the upper end of the concave placing groove is fixedly connected with the lower end of a guide pillar. A guide groove is formed inthe other end of the guide pillar. One end of a piston cylinder is inserted into the guide groove, and the other end of the piston cylinder is fixedly connected with the middle of the lower end of adrive plate. An arranged electric push rod can drive the drive plate to move up and down, the piston cylinder can move up and down in the guide groove and further play an air blowing effect on bean germs on the U-shaped bearing plate via through holes, and thus the purpose of dispersing the bean germs is achieved. Arranged stirring rods can stir and smash the bean germs, the phenomenon of uneven smashing is avoided, and the smashing quality of the whole device is improved to a great extent.

The invention discloses a production process of an antibacterial and warm-keeping quilt core. The production process comprises the following steps: 1, weighing raw materials according to a proportion;2, putting the cotton fibers, the hemp fibers, the carbon fibers, the bamboo fibers, the polyester fibers and the polyacrylonitrile fibers into a mixer, setting the temperature to be 60-70 DEG C, andcontinuously mixing for 30-60 minutes; 3, adopting a cotton slitting machine for slitting and scattering, and setting the rotating speed of the cotton slitting machine to be 500-600 r / min till the mixed fiber materials are evenly scattered; 4, adopting a carding machine and a lapping machine for spreading the scattered mixed fibers, and setting the vehicle speed to be 1.5-2 m / s; 5, filling the mixed fiber by adopting a filling machine, and sealing the opening and sealing the edge after filling is finished; and 6, performing inspection and package after completion, and finally performing storage. According to the antibacterial and warm-keeping quilt core, the antibacterial and warm-keeping effects are remarkably improved, and when a central air conditioner and a fresh air system are forbidden to be used in a hotel, the advantages are particularly obvious.

The present invention relates to a highly dispersed zwitterionic dispersant for a cementing pad fluid, and a preparation method thereof, wherein the highly dispersed zwitterionic dispersant comprises a monomer, an initiator accounting for 1.3-2.5% of the mass of the monomer, a reducing agent accounting for 0.8-2.0% of the mass of the monomer, and isopropyl alcohol accounting for 3-5% of the mass of the monomer. The preparation method comprises: adding a monomer to water, heating and stirring, heating to a temperature of 50-85 DEG C after the solid is completely dissolved, stirring for 10-20 min, respectively adding an initiator and a reducing agent, carrying out a constant temperature reaction for 3-6 h, adding isopropyl alcohol, carrying out constant temperature treatment for 0.3-0.6 h, taking out, and adjusting the pH value to 5-6 with a 45% sodium hydroxide solution so as to obtain the product. According to the present invention, after the highly dispersed zwitterionic dispersant is added to a cementing pad fluid, the good dispersing and compatibility effects are provided for the drilling fluid and the cement slurry, the mixed fluid has the good rheological property, and the cement slurry annulus replacement efficiency and the cementing interface cementation quality can be effectively improved; and the preparation method is simple and feasible, is conveniently used on site, and has strong operability.

The invention provides a capsule comprising docusate sodium and dantron, a preparation method of the capsule, docusate sodium used as one of the raw material medicines of the capsule, and a technological method for synthesizing medicinal-level high-purity docusate sodium. The prepared product has the effects of treating constipation and reducing the side effects of a cathartic.

The invention provides a preparation method and application of a gel electrolyte cell, and the preparation method comprises the following steps: S1, adding a liquid gel electrolyte with the temperature of less than or equal to 5 DEG C into the cell, and sealing primarily; S2, placing the primarily sealed battery cell in an environment with the temperature of less than or equal to 5 DEG C, and standing for more than or equal to 6 hours; S3, conducting charging formation in the environment with the temperature smaller than or equal to 10 DEG C, wherein the formation pressure ranges from 0.1 MPa to 1.3 MPa, and the charging current is smaller than or equal to 0.2 C; and S4, carrying out degassing and secondary sealing after formation, carrying out standing for a polymerization reaction, converting the liquid gel electrolyte into gel electrolyte, and completing preparation of the battery cell. Compared with the prior art, the rate of the copolymerization reaction is slowed down through low temperature, so that the liquid electrolyte fully infiltrates the pole piece and the diaphragm before being converted into gel, thereby solving the problems that the copolymer of the existing gel electrolyte cannot be fully dispersed into the battery cell before being polymerized, so that a lithium ion transmission channel is blocked, and local lithium precipitation of the negative electrode is caused.