4878results about How to "Reduce usage" patented technology

The invention discloses a smart home energy management optimization method in an Internet of Things environment. According to the method, the Internet of Things technology is utilized, intelligent identification and classified management are carried out on equipment, multiple energy management strategies are preset, and a user can conveniently and autonomously adjust; energy data is monitored in real time through a sensor and an intelligent electric meter, an energy consumption rule is mined by using a big data analysis technology, and a demand trend is predicted; constructing an intelligent energy dispatching center, and formulating a dynamic energy distribution scheme by using an optimization algorithm; a mobile phone application and an intelligent control panel are developed, and a user is supported to check data, control equipment and carry out personalized customization; and meanwhile, equipment firmware upgrading and remote management are realized. According to the invention, energy consumption can be reduced, cost can be controlled, equipment collaboration and energy distribution efficiency can be improved, user experience can be enhanced, system maintenance and upgrading are facilitated, and intelligent household energy management is more efficient, intelligent and flexible so as to adapt to diversified household requirements.

The invention relates to the technical field of agricultural big data processing, and discloses a winter wheat yield prediction method based on XLSTM and assimilation crop growth model, comprising the following steps: data acquisition and data preprocessing; extracting a winter wheat planting area; performing leaf area index inversion; correlation analysis and feature extraction; establishing a crop growth model based on a WOFOST model; performing data assimilation based on ensemble Kalman filtering; establishing a time sequence data set; establishing a yield prediction model based on the extended long-short-term memory neural network; and model prediction: inputting the current remote sensing image and the meteorological data of the future time period into a yield prediction model, and outputting a yield prediction value of the winter wheat in the target area. According to the method, by integrating and fusing multi-source data and combining complex models and algorithms, the problem that fusion of the multi-source data and the complex relation between the multi-source data and the yield are not fully considered due to the fact that only a single feature is concerned or the models are not fully considered is solved.

The invention relates to bacillus velezensis SMB1 and application thereof in prevention and treatment of plant diseases, and belongs to the technical field of biological prevention and treatment of plant diseases. The strain is preserved in the China Center for Type Culture Collection on November 27, 2024, the preservation address is Luojia mountain, Luojia mountain, eight road, Wuchang District, Wuhan City, Hubei Province, and the preservation number is CCTCC NO: M20242647. The bacillus velezensis SMB1 provided by the invention has a remarkable bacteriostatic effect on plant pathogenic fungi, plant pathogenic oomycetes, plant pathogenic bacteria and animal pathogenic bacteria, has an extremely good broad-spectrum bacteriostatic function, has a great application potential in biological control of plant diseases, can reduce the use of chemical pesticides, and has a good application prospect. The pesticide residue in agricultural products is reduced, the environment is protected, and the urgent demand on pollution-free agricultural product production at present is met.

The invention discloses a sulfur-manganese composite autotrophic denitrification filler as well as a preparation method and application thereof, and belongs to the technical field of environmental functional materials and polluted water treatment. The sulfur-manganese composite autotrophic denitrification filler contains manganese salt, a sulfur-based component and a cement-based component, the manganese salt comprises one or more of manganese carbonate, calcium manganese ore and rhodochrosite; the sulfur-based component comprises sulfur and sulfur manganese ore; the cement-based component comprises cement, fly ash pottery sand, silica fume, blast furnace slag and metakaolin; the cement comprises one or more of Portland cement, iron aluminate cement and sulphoaluminate cement. The nitrogen removal efficiency of the sulfur-manganese composite autotrophic denitrification filler is superior to that of a sulfur autotrophic denitrification system, the sulfate concentration and nitrite nitrogen accumulation in effluent are remarkably reduced, the service life of the filler is prolonged, and the efficient utilization rate of the material is improved.

The invention discloses argon recovery equipment capable of achieving stable rectification and a working method thereof.The argon recovery equipment capable of achieving stable rectification comprises a rectification system, the rectification system comprises a temperature adjusting mechanism and an argon extraction unit, and the argon extraction unit comprises a pure argon tower, an argon tower reboiler, a pure argon pipe set, a first valve set and a stability increasing component; the stability augmentation component comprises a stability augmentation assembly and a temperature detection piece, and the stability augmentation assembly comprises a nitrogen compressor and a nitrogen reboiler. According to the amount of pure argon gasified through heat exchange between pure liquid argon obtained through rectification in the pure argon tower and dried crude argon obtained after cooling in the argon tower reboiler, the supply amount of dry nitrogen is adaptively adjusted through the stability augmentation component so as to adjust the amount of pure argon supplied to the pure argon tower by the nitrogen reboiler; the argon extraction unit and the argon tower reboiler are jointly matched with the actual working condition of the argon tower reboiler, so that the anti-interference capability of the argon extraction unit is improved, the stability of the rectification process is ensured, and the purity of the obtained pure argon is ensured.

The invention discloses a microbial agent for preventing and treating soil-borne diseases of food crops and a preparation method of the microbial agent, and belongs to the technical field of microorganisms. The microbial inoculum comprises three functional strains, namely pseudomonas guayensis, paenibacillus polymyxa and trichoderma koningiopsis, the three strains are mixed in equal proportion and cooperate with one another, so that the microbial inoculum has a remarkable disease-resistant effect, has an antagonistic effect on various diseases of wheat and corn, can be used for preventing and treating wheat root rot, take-all and banded sclerotial blight as well as corn stem rot and banded sclerotial blight, and has a wide application prospect. Particularly, the inhibition effect on the take-all disease of wheat is optimal. Meanwhile, the coating agent and the auxiliaries are used, so that the acting durability and stability of the microbial inoculum are improved. The microbial agent is matched with a conventional base fertilizer for use, use of chemical bactericides is reduced, growth of common pathogenic bacteria of food crops is effectively inhibited, and the yield of the food crops is increased.

The invention discloses a large model question answering method and device based on a cache mechanism, a storage medium and equipment, and the method comprises the steps: receiving question description information inputted by a target question initiator, and querying whether first answer information matched with the question description information exists in a corresponding trust domain cache of the target question initiator; if the first answer information matched with the question description information exists in the trusted domain cache, performing answer feedback to the target question initiator based on the first answer information; and if the first answer information matched with the question description information does not exist in the trusted domain cache, calling a large model to generate second answer information corresponding to the question description information, and performing answer feedback to the target question initiator based on the second answer information, and associating the question description information with the second answer information and then storing the question description information and the second answer information in the trusted domain cache. And the response efficiency can be improved.

The invention discloses a porous substrate reinforced anion exchange membrane and a preparation method and application thereof, and relates to the technical field of anion exchange membranes. The porous substrate reinforced anion exchange membrane is prepared by the following steps: uniformly mixing a polyarylene alkylene type cationic polymer solution and a C1-C10 alcohol solvent, then coating two sides of a porous substrate with the mixture, and drying to obtain the porous substrate reinforced anion exchange membrane. And removing the solvent to obtain the product. According to the method, the porous substrate can be well infiltrated by the cationic polymer solution without pre-treating the porous substrate, so that the porous substrate reinforced anion exchange membrane with a sandwich-like structure is obtained. The film has outstanding swelling resistance and excellent mechanical properties, has good electrochemical properties, and has good application prospects in alkaline film energy conversion devices.

The invention discloses an ultra-high molecular weight polyethylene fiber melt spinning method which comprises the following steps: step 1, mixing ultra-high molecular weight polyethylene resin with polyethylene wax and high-density polyethylene to form a composition; 2, melting the composition at a high temperature to form a melt, carrying out melt spinning, and carrying out nozzle stretching and air cooling to obtain nascent fibers; and step 3, carrying out hot stretching and heat setting on the nascent fiber to obtain the final ultra-high molecular weight polyethylene fiber. By adopting the technical scheme, the melt flowability of the ultra-high molecular weight polyethylene can be greatly improved by the high-density polyethylene and the polyethylene wax, so that the ultra-high molecular weight polyethylene resin can be smoothly subjected to melt spinning. Meanwhile, in the hot stretching process, the polyethylene wax can participate in the crystallization process of the ultra-high molecular weight polyethylene resin and the high-density polyethylene, and finally the mechanical property of the ultra-high molecular weight polyethylene fiber can be well maintained.

The invention discloses a dual three-phase permanent magnet motor current control method and system under high speed and low carrier wave ratio, and belongs to the technical field of permanent magnet motor control. The method mainly comprises the following steps: reconstructing a motor mathematical model by adopting VSD conversion and Park conversion; designing a linear expansion state observer; a reference value of an output voltage vector is obtained in combination with deadbeat predictive current control; and performing time delay compensation and angle delay compensation on the output voltage vector to obtain a reference value of a final output voltage vector, sending the reference value to an SVPWM module for modulation, and outputting a PWM pulse signal for driving a motor. No motor parameter is used in the current loop design process, system errors caused by mismatching of the motor parameters can be avoided, and the system robustness is improved; meanwhile, only one control parameter needs to be determined, the parameter setting difficulty is greatly reduced, and stable operation of the high-speed permanent magnet motor under the low carrier wave ratio is achieved.

The invention relates to the technical field of preparation methods of polypeptide drugs, and provides a solid-phase preparation method of tirpotide, which comprises the following steps: by taking amino resin as initial resin, sequentially coupling amino acid and small-fragment peptide according to an amino acid sequence of the tirpotide by using a solid-phase synthesis method to synthesize tirpotide resin; and cracking and purifying the tilpotide resin to obtain a pure tilpotide product. Wherein the small fragment peptide is 1-4 tetrapeptide fragment Boc-Tyr (tBu)-Aib-Glu (OtBu)-G1y-OH, 5-6 dipeptide fragment Fmoc-Thr (tBu)-Phe-OH, 7-8 dipeptide fragment Fmoc-Thr (tBu)-Ser (tBu)-OH, 10-11 dipeptide fragment Fmoc-Tyr (tBu)-Ser (tBu)-OH, 12-13 dipeptide fragment Fmoc-Ile-Aib-OH, 17-18 dipeptide fragment Fmoc-Lys (AEEA-AEA-gamma-Glu (alpha-OtBu)-Ecosanoic acid (mon-tBu), 20 side chain peptide Fmoc The coupling agent coupling the amino acid and the small fragment peptide is selected from the group consisting of Oxyma and DIC, TPTU and TMP or COMU and DIEA. The crude product of the tirpotide prepared by the method disclosed by the invention is high in yield and high in purity.

The invention provides a TOPCon battery metallization method, and relates to the technical field of solar cells, and the method comprises the following steps: providing a blue diaphragm; preparing a metal seed layer on one side of the blue membrane and then drying; preparing a metal seed layer on the other side of the blue diaphragm, and then drying or sintering; preparing main and auxiliary grids on the metal seed layer on one side and then drying, wherein the main and auxiliary grids are made of non-silver paste; and preparing main and auxiliary grids on the metal seed layer on the other side, and sintering to complete metallization of the battery piece. In the invention, the main grid and the auxiliary grid are made of the non-silver paste, and the non-silver paste is used for replacing traditional silver paste, so that the use amount of silver is greatly reduced, the cost of raw materials is reduced, the production cost of the TOPCon battery is reduced, the dependence on noble metal resources is relieved when the TOPCon battery is produced, and the requirement of sustainable development is better met.

The invention relates to the technical field of microorganisms, in particular to a lactobacillus kefir-producing subsp. Kefir W182 and application thereof. The preservation number of the lactobacillus kefir-producing subspecies is CGMCC No.27058, the preservation time is April 11, 2023, and the lactobacillus kefir-producing subspecies can survive for a long time in intestinal tracts, has a strong adhesion characteristic, can produce exopolysaccharides at high yield, can be used for fermenting dairy products, fruit juice, fruit puree, soybean milk and the like, and can also be used for preparing leavening agents and natural thickening agents. Especially when applied to fermented milk products, the fermented milk products can have rich flavor and very good viscosity without adding any existing thickening agent and emulsifying agent, can remarkably reduce separation of whey, can be stored for a long time, and have wide application in the field of food.

The invention discloses a construction method of a synchronous pouring type precast concrete split cover beam, a component mold of the synchronous pouring type precast concrete split cover beam and a component manufacturing method.The combined component mold is composed of a bottom mold, a side mold, a first side mold and a second side mold, and a baffle is arranged in a pouring area of the component mold; a plurality of components can be synchronously manufactured at a time through the mold, then the multiple components are spliced on site and cast in situ to form the component-piece-type prefabricated concrete cover beam, manufacturing of the large-cantilever prefabricated cover beam under the special working conditions that the construction site is narrow, the distance between supporting stand columns is small, cantilevers on the two sides are large, and the stress requirement is high can be achieved, and due to the fact that the prefabricated concrete cover beam is heavy, manufacturing cost is low. The prefabricated concrete cover beam is simple in structure and high in transportation difficulty, the transportation and hoisting difficulty is reduced by manufacturing the multiple components in a split mode, the manufacturing difficulty of the prefabricated concrete cover beam is reduced, meanwhile, manufacturing of the prefabricated concrete cover beam with the larger size and weight can be achieved, and the requirements for the prefabricated concrete cover beam in different projects are effectively met.

The invention discloses an antibacterial nylon material as well as a preparation method and application thereof, relates to the technical field of antibacterial high polymer materials, and solves the problems of poor antibacterial performance and difficulty in industrial production of existing antibacterial nylon 6. The preparation method comprises the following steps: mixing a seven-membered cyclic lysine derivative monomer with lactam, and carrying out hydrolytic polymerization by taking water as an initiator to obtain copolyamide; and placing the copolyamide in an acid solution, heating and stirring to carry out protonation reaction, and purifying the reaction product to obtain the antibacterial nylon material. The seven-membered cyclic lysine derivative monomer is an unprotected cyclic lysine monomer (aminocaprolactam), a single protected cyclic lysine monomer or a salified cyclic lysine monomer. The method can be widely applied to the fields with antibacterial requirements, such as fabrics, plates, pipes, packaging and various panels.

The invention relates to the technical field of adhesives, and discloses an antibacterial mildew-proof water-based adhesive and a preparation method thereof. The preparation method of the antibacterial and mildew-proof water-based adhesive comprises the following steps: reacting 2, 2-dimethylolpropionic acid with castor oil to obtain hyperbranched bio-based polyol; modifying the hyperbranched bio-based polyol by using a modifier to obtain modified bio-based polyol; the preparation method comprises the following steps: preparing a waterborne polyurethane dispersion liquid by taking modified bio-based polyol, a hybrid modified BN / MOF composite material and hexamethylene diisocyanate as raw materials and 1, 4-butanediol as a chain extender; the preparation method comprises the following steps: mixing a waterborne polyurethane dispersion liquid, a wetting agent, a defoaming agent, a thickening agent and water to obtain a component A; an aliphatic curing agent is used as a component B; during use, the component A and the component B are mixed and stirred. The antibacterial and mildewproof water-based adhesive disclosed by the invention has excellent adhesion performance, water resistance, self-repairing performance and lasting antibacterial and mildewproof performance.

The invention belongs to the field of microorganisms, and relates to a bacillus velezensis BLS-27 and a fungicide and application thereof, the bacillus velezensis BLS-27 is preserved in China General Microbiological Culture Collection Center on October 21, 2024, the preservation number is CGMCC No.32274, and the preservation address is No.3, Yard 1, Beichen West Road, Chaoyang District, Beijing. The strain BLS-27 has an inhibition effect on wild jujube anthracnose pathogenic bacteria, can effectively inhibit various plant disease pathogenic bacteria, shows broad-spectrum antibacterial activity, is environment-friendly and can be widely applied to plant disease control.

The invention discloses a dexterous hand finger based on connecting rod transmission, a bionic mechanical arm and a humanoid robot, belongs to the field of bionic mechanical arms, solves the problem that a transmission mechanism of an existing dexterous hand is low in response speed, and adopts the technical scheme that the dexterous hand finger mainly comprises a finger base and a finger body, a driver and a transmission mechanism in transmission connection with the driver are arranged on the finger base, the driver drives the finger body to bend and / or swing through the transmission mechanism, the transmission mechanism comprises a guide piece and a sliding block installed on the guide piece in a sliding mode, and the sliding block is in transmission connection with the finger body. A traction rope connected with the sliding block is wound on an output shaft of the driver, the driver controls the output shaft to rotate forwards and backwards so as to drag the sliding block to slide back and forth along the guiding piece through the traction rope, and then the finger body is controlled to bend and / or swing. The finger is mainly used for driving the sliding block to move through the pulling rope so as to control the finger body to bend and swing, and the response efficiency of the finger body can be improved.

The invention relates to the technical field of agricultural automation and intelligent control, in particular to a weeding monitoring system and method based on an unmanned aerial vehicle, and the method comprises the steps: collecting spectral reflection data and microwave internal structure data of a target area through a multispectral camera and a microwave sensor carried by the unmanned aerial vehicle; the system generates standardized perception data through a data fusion module, and performs precise classification and recognition of weeds in combination with feature extraction, adaptive fuzzy clustering and multi-model collaborative learning technologies; based on a spatial distribution diagram of weeds, the system predicts a weed diffusion trend through a graph convolutional network, and an optimal weeding strategy is generated in combination with environmental data; and the unmanned aerial vehicle executes the weeding task through the optimized flight path, monitors the weeding effect in real time, continuously optimizes the strategy, and ensures efficient execution of the weeding task.

The invention relates to the technical field of circuit substrate manufacturing, and particularly discloses a preparation method of a composite solder sheet and an AMB ceramic copper-clad plate. The composite solder sheet is composed of an active metal foil and a copper-containing layer modified on the surface of the active metal foil, and the preparation method of the copper-clad plate comprises the following steps: after the surface of the active metal foil is pretreated, the copper-containing layer is deposited to prepare the composite solder sheet, and the composite solder sheet is placed between a copper substrate and a ceramic sheet to be pressed and assembled. And performing vacuum brazing on the assembly to complete the preparation of the ceramic copper-clad plate. A composite solder sheet containing active metal is adopted, high-temperature element diffusion during vacuum brazing is utilized at the diffusion temperature to achieve alloying of a composite solder layer, and then heat preservation is conducted at the brazing temperature to achieve uniform melting of solder and wetting metallurgical reaction between the solder and copper and between the solder and a ceramic substrate. By means of the preparation method, low-cost and high-reliability preparation of the AMB ceramic copper-clad plate can be achieved, and the prepared AMB ceramic copper-clad plate also has high peel strength and lower weld porosity.

The invention belongs to the technical field of agricultural film preparation, and particularly relates to a coating type polyolefin seven-layer co-extrusion light-conversion dustproof high-heat-preservation pesticide-resistant long-acting dripping fog dispersal greenhouse film and a preparation method thereof. The greenhouse film is composed of a first inner dustproof anti-aging layer, a second inner heat-preservation anti-aging dustproof storage layer, a third inner high-heat-preservation anti-aging layer, a middle light conversion layer, a third outer high-heat-preservation anti-aging layer, a second outer heat-preservation anti-aging layer, a first outer modified bonding anti-aging layer and a coating layer-long-acting dripping fog dispersal layer. The specification width of the greenhouse film is 10 m or above, the thickness is 0.12 mm-0. 22 mm, the light transmittance is 90% or above, the haze is 15% or below, the infrared transmittance is smaller than 18%, the annual attenuation rate of the light transmittance is smaller than 1.0% due to the dustproof function, the lasting period of the dripping fog dissipation function is 10 years or above, and the requirements of farmers for various performance indexes of the greenhouse film with the service life being 10 years or above can be completely met.

The invention discloses a high-temperature superconducting Tokamak cold shield assembly assembling system and method. The high-temperature superconducting Tokamak cold shield assembly assembling system comprises a positioning assembly, a welding assembly, a supporting frame, supporting legs, a locking mechanism and a driving mechanism. The invention relates to the technical field of welding tools. According to the high-temperature superconducting Tokamak cold shield assembly assembling system and method, the supporting frame is arranged to be installed around the lower-layer high-temperature superconducting Tokamak cold shield, the positioning assembly and the welding assembly can be placed on the supporting frame in sequence, and the positioning assembly can abut against the lower-layer high-temperature superconducting Tokamak cold shield by half; the high-temperature superconducting Tokamak cold shield suspended on the upper layer to be put down is positioned and guided, it is guaranteed that the high-temperature superconducting Tokamak cold shield can be accurately in butt joint with the high-temperature superconducting Tokamak cold shield on the lower layer, and then the problem that butt joint dislocation of the heavy high-temperature superconducting Tokamak cold shield is difficult to adjust is solved. And after the positioning assembly is taken down, the welding assembly is replaced, the welding assembly can be driven by the driving mechanism to rotate around the high-temperature superconducting Tokamak cold shield along the supporting frame for welding, and manpower is saved.

The invention belongs to the technical field of civil engineering materials, and particularly relates to a coal gangue-based solid waste cementing material as well as a preparation method and application thereof. The coal gangue-based solid waste cementing material is prepared from the following raw materials in percentage by mass: 60-80% of activated coal gangue powder, 5-20% of an exciting agent, 5-15% of superfine slag powder, 2-5% of silica fume, 1-3% of gypsum and 1-3% of fan blade short fibers. According to the invention, solid waste resources (coal gangue and superfine slag powder) are recycled, and on the basis of consumption of the solid waste resources, the coal gangue-based solid waste cementing material obtained by using the solid waste resources has good mechanical properties and durability, and can meet the use requirements of highway engineering base layers.

The invention relates to the technical field of energy conservation and new energy, and discloses an electric vehicle integrated heat management system which comprises a refrigerant loop and a cooling liquid loop. The refrigerant loop and the cooling liquid loop realize heat interaction through the plate heat exchanger; a compressor, an eight-way valve, an in-cabin heat exchanger, a gas-liquid separator, a first heating assembly, a first electronic expansion valve, a second electronic expansion valve, a third electronic expansion valve, a battery direct cooling plate and a first external heat exchanger are arranged on the refrigerant loop; a radiator, a three-way water valve, an electric driving system, a motor water pump, an expansion water tank, a second external heat exchanger and a second heating assembly are arranged on the cooling liquid loop. The problems that a battery electric vehicle thermal management system is numerous in component, complex in loop and high in failure rate are solved.

The invention relates to the technical field of sensor design analysis, in particular to a flexible sensor design method and system based on topological optimization, and the method comprises the following steps: building a coupling equation of a flexible sensor under the action of multiple physical fields of mechanics, electricity and thermotics, simulating stress, potential and temperature distribution of different areas in the design space based on material parameters; dividing a design space into a high-stress area, a transition area and a low-stress area according to stress, potential and temperature distribution, and defining a performance target for each area; and dynamically adjusting the state of the unit material, and adaptively adjusting the connectivity constraint of the topological structure according to the distribution change of the material in the iteration process. According to the invention, the sensitivity of potential response is effectively improved, so that the sensor has efficient signal detection capability in a stress concentration area, and unnecessary material redundancy is reduced at the same time.

The invention discloses an AWG chip automatic test system based on a photodiode array, and the system comprises a light source transmitting module which is used for transmitting laser and finally coupling the laser to an input waveguide of an AWG chip; the six-axis control platform controls the single-mode optical fiber FA to be accurately coupled to the AWG chip by adjusting the position of the single-mode optical fiber FA; the light source detection module comprises a PD array composed of a plurality of photodiodes, and the PD array obtains information of an output waveguide of the AWG chip; data acquired by the upper computer and the data acquisition system are transmitted to the upper computer to be processed and displayed, and by taking a CWDM chip as an example, insertion loss, central wavelength, bandwidth, crosstalk and the like of the chip can be calculated by respectively acquiring optical power of four channels in the chip, so that whether the chip reaches the standard or not is judged. In the process, as the AWG chip is a passive device, input and output waveguides at the two ends of the chip carry out optical transmission in an alignment mode, and if alignment is wrong, large loss is likely to be generated.

The invention relates to a process for gradient extraction of seaweed protein, algin and fucoidin in brown algae. The invention relates to a process for extracting seaweed protein, algin and fucoidin in brown algae, which comprises the following steps: carrying out superfine grinding on seaweed, adding water for extraction, filtering and separating to obtain water extraction filtrate, repeatedly dissolving the water extraction filtrate in the next batch of superfine ground seaweed, and circulating for 7 times to obtain saturated or supersaturated water extraction filtrate; adjusting the pH value of the water extraction filtrate to be acidic, and filtering and separating through a micro-filtration membrane to obtain seaweed protein and first filtrate; adding calcium chloride into the first filtrate, and settling to obtain algin and supernate; filtering the supernate through a polyethersulfone composite membrane to obtain a fucoidin concentrated solution; and carrying out spray drying on the concentrated solution to obtain fucoidin powder. The method solves the problem that other functional components are wasted due to the fact that only a single component can be extracted in an existing brown algae functional component extraction method, and also solves the problems of secondary pollution, poor product quality and high cost in an existing extraction method.

The utility model relates to an electrode assembly and a battery monomer adopting the same, the electrode assembly consists of a positive plate, a negative plate and a diaphragm, the electrode assembly is provided with a positive lug and a negative lug, and the size of the negative plate is larger than that of the positive plate; the corner of the positive plate is an inner arc angle; the corner of the negative plate is an outer arc angle; the positive plates and the negative plates are stacked in sequence, and the diaphragms are arranged between the adjacent positive plates and negative plates. The corner of the negative plate is designed to be the outward arc angle, and the corner of the positive plate is designed to be the inward arc angle, so that the aluminum plastic film PP layer is effectively prevented from being scratched in the stacking and packaging processes of the electrode plates. According to the design, the stacking mode of the electrode plates is improved, the possibility of physical interference is reduced, and meanwhile, the reduction of loss in the battery assembly process is also facilitated.

The invention discloses an H-shaped steel automatic welding roller way conveying system. Comprising a lower wing plate feeding line, a web feeding line, an upper wing plate feeding line, a lower wing plate and web assembly line, a T-shaped steel assembly welding straightening blanking transition line, a T-shaped steel assembly welding straightening blanking line, a web lifting turnover line, a T-shaped steel upper wing plate assembly line, an H-shaped steel assembly welding straightening blanking transition line and an H-shaped steel assembly welding straightening blanking line which are arranged in parallel in the same direction. The lower wing plate feeding line, the lower wing plate web assembling line, the T-shaped steel assembling, welding and correcting discharging line, the web feeding line, the upper wing plate feeding line, the T-shaped steel upper wing plate assembling line and the H-shaped steel assembling, welding and correcting discharging line are each composed of a plurality of roller bed units. The web lifting turnover line is composed of a plurality of lifting roller bed units; and the T-shaped steel assembling, welding and straightening blanking transition line and the H-shaped steel assembling, welding and straightening blanking transition line are respectively composed of a plurality of transition roller bed units. The problems that an existing H-shaped steel welding production line is high in labor intensity and low in efficiency, and safety factors exist in a working site can be solved.

The invention provides a method for extracting lithium by leaching spodumene. The method comprises the following steps: roasting a mixture of spodumene concentrate and a roasting aid to obtain roasted clinker; and under the condition that an external field is applied, acid leaching is conducted on the roasted clinker, solid-liquid separation is conducted, and lithium leaching liquid and spodumene smelting slag are obtained. According to the method, roasting transformation is optimized through a process route of combining one-step additive roasting transformation with external field enhanced leaching lithium extraction, the process flow is shortened, meanwhile, external field synergistic enhanced leaching is adopted, and efficient leaching of the lithium element in spodumene and selective leaching of the lithium element are achieved.