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60results about How to "Avoid homogenization" patented technology

Commodity clustering method and device and electronic equipment

The invention discloses a commodity clustering method and device and electronic equipment, a text digest generation method and device and electronic equipment, a picture digest generation method and device and electronic equipment, a picture quality evaluation method and device and electronic equipment and a commodity label name importance generation method and device and electronic equipment. The commodity clustering method comprises the steps that a community set to be classified is acquired; a commodity label set of all commodities to be clustered is generated according to a commodity category which all the commodities to be clustered belong to and the corresponding relation between a commodity category generated in advance and a commodity label set; and the commodities in the commodity set are clustered through a preset clustering algorithm according to the commodity label set of all the commodities to be clustered. By the adoption of the method, similar commodities in the commodity set can be automatically clustered in the same category, the phenomenon of commodity homogenization is avoided, and therefore the effect of improving user experience is improved.
Owner:阿里巴巴(成都)软件技术有限公司

Miniature soil hydrologic monitoring system suitable for high-heterogeneity karst sloping field

InactiveCN103454404AHigh recognition resolutionAvoid homogenizationEarth material testingMonitoring systemKarst
The invention discloses a miniature soil hydrologic monitoring system suitable for a high-heterogeneity karst sloping field. The miniature soil hydrologic monitoring system comprises a miniature region, a miniature interflow collecting system and a miniature direct surface runoff collecting tank. The miniature interflow collecting system is inserted below a sloping soil profile rock-soil interface below the sloping field miniature region for collecting interflow above the rock-soil interface; the miniature direct surface runoff collecting tank is inserted at the position of a sloping soil profile, which is close to the earth's surface for collecting direct surface runoff. The bottom surface of angle steel of the miniature direct surface runoff collecting tank is in contact with the top surfaces of an aluminum-plastic panel and a thin aluminum panel in the miniature interflow collecting system, and the miniature direct surface runoff collecting tank and the miniature sloping field region are fixed together through screws at two sides. According to the miniature soil hydrologic monitoring system, direct surface runoff and interflow of the miniature sloping field region can be simultaneously measured, the difficulty that the soil hydrologic process is monitored on the high-heterogeneity karst sloping field is solved, and a platform is provided for researches on aspects of the hydrologic process, the soil and nutrient loss principle, the karst process and the plant water adaptive mechanism in such karst sloping field.
Owner:INST OF SUBTROPICAL AGRI CHINESE ACAD OF SCI

Quartz stone and preparation method thereof

The invention discloses a preparation method of quartz stone. The method comprises the following steps of: A, weighing and uniformly stirring main raw materials required for preparing the quartz stone; B, primarily distributing the main raw materials; C, performing first compression moulding on the primarily distributed main raw materials through a press to obtain a blank; D, cutting the blank to required figures through a cutting device to obtain a semi-product; E, secondarily distributing the semi-product; F, performing second compression moulding on the secondarily distributed semi-product through the press; G, drying and moulding the secondarily pressed semi-product; and H, polishing the dried and moulded semi-product to obtain a finished product. Correspondingly, the invention further discloses the quartz stone prepared by the preparation method. Due to the adoption of the preparation method disclosed by the invention, under the premise of no dies, figures of various types, especially linear figure patterns can be formed on the surface of the quartz stone, so that the competitiveness of the product is improved.
Owner:FOSHAN BLUE SEA QUARTZ STONE

Gradient anti-glare cover plate and making method thereof as well as electronic equipment

ActiveCN107608013AAchieve natural gradientsTo achieve a gradient effectDiffusing elementsPhotomechanical apparatusDiffuse reflectionEngineering
The application provides a gradient anti-glare cover plate and a making method thereof as well as electronic equipment. The making method comprises the following steps: providing a substrate; making graded-density grooves in at least one surface of the substrate, wherein the distance between the every two adjacent grooves is less than 5 microns; demoulding; making uneven anti-glare structures on the surfaces of the grooves. The graded-density grooves are firstly formed before anti-glare production, and the distance between the every two adjacent grooves is less than 5 microns, so that the natural gradual change of light can be realized, a gradual change effect is achieved, and the appearance of the gradient anti-glare cover plate is enabled to be more attractive; therefore, the gradient anti-glare cover plate is more greatly different from cover plates of other electronic products, and a homogenization phenomenon is further avoided. Furthermore, the anti-glare effect of the gradient anti-glare cover plate is realized mainly by means of irregular rugged small salient points directly formed in the grooves, and a diffuse reflection function is realized; the gradient and anti-glare effect is realized only by combining the two processes, so that the making technology is simple.
Owner:TRULY OPTO ELECTRONICS

Automobile welcome interaction method

The invention relates to the technical field of automobile intelligence. The invention particularly relates to an automobile welcome interaction method. The method comprises the following steps: an out-vehicle interaction step: the distance between a vehicle key and a vehicle and a vehicle unlocking signal are detected through a Bluetooth sensor; an in-vehicle interaction step: a vehicle door opening-closing sensor senses the vehicle door opening-closing state, and a pedal pressure sensor, a central control welcome module and a face detection sensor are respectively started and are used for detecting behaviors and identities of users; a getting-off interaction step: behaviors of a user are detected through a vehicle door opening and closing sensor, a seat pressure sensor, a safety belt tension sensor and a face detection sensor. Through cooperative work between the automobile sensors and the software and hardware modules, the use behaviors of a user when the user gets on an automobile,uses the automobile and gets off the automobile are detected, scenarized, differentiated and personalized feedback is provided, and the automobile use experience of the user is optimized by establishing a set of automobile welcome system with more complete interaction mode and experience.
Owner:芜湖盟博科技有限公司

Method for preparing manganese phosphate iron phosphate-carbon composite material and manganese phosphate iron phosphate-carbon composite material

The invention discloses a method for preparing a manganese phosphate iron phosphate-carbon composite material and the manganese phosphate iron phosphate-carbon composite material. The method comprisesthe following steps of (1) respectively preparing soluble manganese phosphate-containing solution A, soluble organic ferric salt solution B, soluble organic manganese salt solution C and soluble organic lithium salt solution D; (2) mixing the solution A, B, C and D according to a predetermined element molar ration so as to obtain precursor solution; (3) drying and pelleting the precursor solutionobtained in the step (2) to obtain manganese phosphate iron phosphate precursor powder; (4) sintering the precursor powder obtained in the step (3) under a protection atmosphere to obtain a sinteredmaterial; and (5) carrying out smashing thinning and vacuum packaging on the material obtained in the step (4) to obtain the manganese phosphate iron phosphate-carbon composite material. The method issimple and easy to do and suitable for large-scale industrial production. The obtained material can be used as an active material for the anodes of the lithium ion batteries, and is low in resistivity and excellent in electrochemical performance.
Owner:JIANGSU LITHITECH CO LTD

Method and device for website navigation

The invention provides a method and a device for website navigation. The device for website navigation comprises an acquisition module, a judging module, a weighing module, a display module and a storing module, wherein the acquisition module is used for acquiring browsing behavior information of a user, the judging module is used for judging whether a website browsed by the user is contained in a website list of navigation websites or not according to the browsing behavior information, the weighing module is used for performing weighing processing on each website in the website list according to a set rule if the judging module judges that the website browsed by the user is contained in the website list of the navigation websites so as to obtain a score of each website, the display module is used for displaying websites in the website list of the navigation websites in a distinguishing mode according to the score of each website to perform website navigation, and the storing module is used for determining a personal account of the user and storing the score of each website in the website list into the determined personal account of the user. By means of the method and the device, time for searching for the required websites by the user is saved, the user can conveniently browse the websites, and homogenization of the website navigation is avoided.
Owner:BEIJING QIHOO TECH CO LTD +1

Balanced display method and system for flat-plate X-ray image

The invention discloses a balanced display method for a flat-plate X-ray image. The method includes the following steps of firstly, inputting an original image, segmenting the original image into a plurality of regions according to the differences of pixel point grey values so as to generate a mask image; secondly, reading in the original image and the mask image, sequentially conducting noise estimation, gain estimation and local contrast ratio estimation, and synthesizing the estimation results into algorithm parameters; thirdly, conducting Laplacian pyramid decomposition on the original image to obtain a residual error image, sequentially conducting gamma conversion and histogram conversion on the residual error image according to the algorithm parameters obtained in the second step, and then conducting Laplacian pyramid composition to generate an intermediate image; fourthly, constructing an adjustment curve, mapping the intermediate image into a result image according to the adjustment curve, calculating the optimized window width value and the optimized window position value, and displaying the result image on a display. By means of the balanced display method, target characteristics, at different scales, in the image can be effectively enhanced, and automatic optimal balanced display is achieved for the image.
Owner:深海精密科技(深圳)有限公司

Straight-way solar energy heat exchange heat collector

The invention relates to a straight-way solar energy heat exchange heat collector using solar energy as a heat source and belongs to the technical field of medium and high temperature solar energy utilization. The straight-way solar energy heat exchange heat collector comprises a straight-way transparent tube, a multi-curved face metal heat exchange tube, heat exchange tube end enclosures, a metal expansion joint, adsorbent storage rings, concave spacing sealing rings, metal snap rings, a working medium channel pipe, metal cover plates, sealing fixed plates, card type shield covers and vacuum connectors, wherein the two ends of the multi-curved face metal heat exchange tube are welded and fixed with the heat exchange tube end enclosures; the working medium channel pipe is connected with the heat exchange tube end enclosures; the multi-curved face metal heat exchange tube is provided with the metal expansion joint; the working medium channel pipe passes through the center of the metal cover plate to form an multi-curved face metal heat exchange tube component which is integrally sleeved in the straight-way transparent tube and the two ends of which are sequentially provided with the adsorbent storage rings, the concave spacing sealing rings and the metal snap rings; the sealing fixed plates seal and fix the metal snap rings and the metal cover plates; the two ends of the straight-way transparent tube are provided with the card type shield covers; and the vacuum connectors are fixed on the card type shield covers.
Owner:WUXI C SOLAR NEW ENERGY TECH

Federal learning-based sequence recommendation method and system

The invention discloses a sequence recommendation method and system based on federal learning, and belongs to the field of personalized recommendation and the field of user privacy protection. According to the method, personal information and real-time and historical data of a user are stored locally, each client can perform state representation according to own historical data, an interaction relationship between the user and an article is captured, and a recommendation process is regarded as a serialized decision process based on deep reinforcement learning; according to the method, an attention mechanism is introduced into an aggregation algorithm of federated learning, correlation of feature information extracted by each client and data difference brought by individuation of each client are considered, a weight coefficient is formulated for each client, which is a fine-grained re-weighting means, the individuation degree of data is increased, and the robustness of the data is improved. According to the method, the recommendation accuracy is improved, the method is more suitable for the field of sequence recommendation, and personalized recommendation for the user is realized while personal data privacy is protected.
Owner:ZHEJIANG UNIV +1

Shell assembly, preparation method thereof and electronic equipment

The invention provides a shell assembly, a preparation method thereof and electronic equipment. The shell assembly provided by the embodiment of the invention comprises a shell body, wherein the raw material components of the shell body comprise modified inorganic powder and thermoplastic resin, the weight ratio of the modified inorganic powder to the thermoplastic resin is (1:1)-(10:1); and a transparent resin layer arranged on the surface of the shell. The shell assembly is light in weight and has the warm and moist hand feeling and glossiness of ceramic.
Owner:GUANGDONG OPPO MOBILE TELECOMM CORP LTD

Terminal reconfiguration method based on fuzzy optimization theory in software radio environment

InactiveCN102932802AAvoid the problem of excessive weight of a single attributeAvoid homogenizationTransmissionNetwork planningEvaluation resultIndustrial engineering
The invention discloses a terminal reconfiguration method based on a fuzzy optimization theory in software radio environment. The terminal reconfiguration method is characterized by comprising the following steps of: (1) acquiring attribute parameters of a coverage network in an area where a current terminal is located from a network reconfiguration manager (NRM) by using a terminal reconfiguration manager (TRM) of the current terminal; (2) determining the weights of the attribute parameters of the coverage network by using an expert scoring method, dividing all reconfiguration schemes into high-class schemes and low-class schemes by configuring a characteristic value index membership degree matrix, and calculating the goodness and badness of each reconfiguration scheme; and (3) calculating the membership degree of each scheme according to the goodness and the badness, and determining an optimal reconfiguration scheme according to a membership degree maximization principle. By adoption of the method, scheme difference can be obviously embodied, and the uniformity of an evaluation result is avoided. The method has the advantages of simplicity in calculation, practicability and wide application prospect. The evaluation process and the evaluation result have obvious physical meanings.
Owner:SUZHOU INST FOR ADVANCED STUDY USTC

Biodegradable Mg-Zn-Cu laminar composite and preparing method thereof

The embodiment of the invention provides biodegradable Mg-Zn-Cu laminar composite and a preparing method thereof. The composite is provided with an outer layer, a middle layer and an inner layer whichare connected in sequence. The outer layer is copper alloy, the middle layer is zinc alloy, the inner layer is magnesium alloy, and the composite comprises, by volume percent, 10 to 25% of copper alloy, 20 to 35% of zinc alloy and the balance magnesium alloy. The problem that in the prior art, a single metal material is too fast in corrosion, slow in degradation and too high in elasticity modulusis solved. The composite has the excellent biocompatibility, good mechanical property and good corrosion resistance and has the long-acting antibacterial function. The composite has the important application value in the medical implant material field. The invention further provides a preparing method of the biodegradable Mg-Zn-Cu laminar composite.
Owner:珠海中科先进技术研究院有限公司

Electric computer based on storage level structure

InactiveCN1908916AMaintain hardware compatibilityMaintain software compatibilityInput/output to record carriersMemory adressing/allocation/relocationMemory hierarchyLevel structure
The computer design based on new storage hierarchical structure comprises: (1) taking adding the nonvolatile semiconductor memory as an independent storage layer into computer system; (2) replacing traditional HD by high-speed nonvolatile semiconductor memory as computer standard large-capacity external storage device; (3) ensuring hardware compatibility with current system; (4) ensuring software compatibility with current system. This invention is elaborate and reliable for bright market future.
Owner:贺劲

Commodity style selection method and system for Taoke website

The invention discloses a commodity style selection method and system for a Taoke website. According to the method, a style selection instruction which is input by a user and contains commodity information is acquired, the commodity information is converted into a Taobao guest commission link, finally the Taobao guest commission link is converted into a Tao command which is output to the user, and commodity style selection input is realized. By the adoption of the embodiment, the style selection process of the Taoke website can be optimized, the Tao command is automatically generated for the user to use while homogenization of the Taoke website is avoided, and user experience is optimized.
Owner:广州爱美互动网络科技有限公司

Method for improving aroma of cigarette product by using raspberry ketone glucoside

ActiveCN113100469AImprove sensory draw qualitySpice StabilizedTobacco preparationTobacco treatmentTobacco leafMedicinal chemistry
The invention discloses a method for improving the aroma of a cigarette product by using raspberry ketone glucoside for the first time. The method comprises the following steps: dispersing or dissolving a spice containing raspberry ketone glucoside in a solvent to form a spice dispersion, and then adding the spice dispersion into a cigarette. According to the invention, raspberry ketone glucoside is used as the precursor-aroma spice for the first time in the cigarettes, and the problems that the spice in the cigarettes is not stable enough and the style characteristics are not prominent are solved. The spice dispersion containing raspberry ketone is used in cigarette paper, tobacco shreds or reconstituted tobacco leaves, mainstream smoke and side stream smoke in cigarettes have the characteristic fragrance of raspberry ketone, and the fragrance is rich and rich.
Owner:CHINA TOBACCO YUNNAN IND

Manufacture technology for blended jasmine scented green tea, and mixing device for manufacture of blended jasmine scented green tea

The invention discloses a manufacture technology for a blended jasmine scented green tea, and a mixing device for the manufacture of the blended jasmine scented green tea. The manufacture technology comprises the following steps of: selecting full jasmine scented green tea raw materials without insect pests; then, carrying out first-time winnowing and purification, classification, green leaf shaking, green leaf cooling, spreading for cooling, kneading, drying, stir-frying, re-drying and mixing on the selected raw materials to obtain a finished product. A mixing device comprises a mixing bracket, wherein the lower end of the mixing bracket is provided with supporting feet which are in axial array distribution; an inner groove is arranged in the mixing bracket; the mixing bracket is also provided with through holes which penetrate through the mixing bracket; a lifting table is also arranged in the inner groove; one side of the mixing bracket is provided with a connecting block; the connecting block is connected with a lifting rod; the top end of the lifting rod is provided with a cross bar; the top end of the cross bar is provided with an air cylinder; the lower section of the air cylinder is provided with a telescopic rod; the telescopic rod is also provided with a connector; the lower end of the connector is also provided with a stirring bar; and the mixing bracket is providedwith a stirring vessel. The invention has a simple technology and is repeatedly mixed, the use ratio of the tea is effectively improved, meanwhile, the tea is convenient in production on a large scale, and the production benefit of an enterprise is improved.
Owner:黄山水工茶业有限公司

Shell assembly, preparation method of shell assembly and electronic equipment

The invention provides a shell assembly which comprises a transparent substrate, a light-transmitting leather layer and a semitransparent color layer, the light-transmitting leather layer and the semitransparent color layer are arranged on the two opposite sides of the transparent substrate, or the light-transmitting leather layer and the semitransparent color layer are arranged on the same side of the transparent substrate, and the semitransparent color layer is arranged between the transparent substrate and the light-transmitting leather layer. The shell assembly not only has the touch feeling of leather, but also has light transmission and transparent color appearance, so that the visual effect of the appearance of the shell assembly is improved, and homogenization is avoided. The invention further provides a preparation method of the shell assembly and electronic equipment comprising the shell assembly.
Owner:GUANGDONG OPPO MOBILE TELECOMM CORP LTD

A method for manufacturing ultra-high-density ultra-high-strength plant fiberboard

The invention relates to a manufacturing method of an ultrahigh-density and ultrahigh-intensity plant fiber board. The manufacturing method comprises the following steps: by taking dry plant fiber as a raw material, preparing gum-containing fiber by adopting continuous processes of "cold prepressing for assembling, spraying of gum liquid, cold high pressure breathing degumming and air flow drying", and directly putting the gum-containing fiber into high-temperature and high-pressure equipment for high-temperature and high-pressure curing, thus obtaining the ultrahigh-density and ultrahigh-intensity plant fiber board. For the obtained fiber board, the density is more than 1.1 g / cm<3>, the static bending intensity is more than 70 MPa, the elastic modulus is more than 7 GPa, the thickness swelling rate of water absorption is less than 5 percent, and the water absorption rate is less than 5 percent; and a new idea is provided for solving the phenomenon of homogenization among fiber board products in China and expanding new application of plant fiber materials. The manufacturing method promotes continuous production of the ultrahigh-intensity plant fiber board, also promotes application of the plant fiber board in high-additional-value fields of building ornaments and interior trim parts in airplanes and G-series high-speed trains, and promotes greening development of composite materials.
Owner:INST OF WOOD INDUDTRY CHINESE ACAD OF FORESTRY

Label supplementing method and device

The embodiment of the invention discloses a label supplementing method and device, relates to the technical field of multimedia, and aims to generate labels for videos with missing labels and avoid homogenization of different video labels to a certain extent. The method comprises the steps of obtaining a candidate label set of a first entity; wherein the candidate label set comprises a relationship representation vector and at least one label value representation vector; calculating the matching degree of each label value representation vector based on the relationship representation vector and the entity representation vector of the first entity; wherein the entity representation vector is a representation vector determined according to the identifier of the first entity; taking the labels corresponding to the first N label value representation vectors with higher matching degree with the entity representation vectors of the first entity as the labels of the first entity; wherein N isan integer greater than or equal to 1.
Owner:HUAWEI TECH CO LTD

Matched flux-cored wire for medical gas and vacuum seamless copper pipe fusion welding

The invention belongs to the field of welding materials, and particularly relates to a matched flux-cored wire for medical gas and vacuum seamless copper pipe fusion welding. The matched flux-cored wire comprises a TU1 semi-hard copper alloy sheath and a flux core; the flux core comprises 2.1%-3.2% of CuSi16 powder, 2.2%-3.0% of CuMn30 powder, 1.5%-2.2% of CuP12 powder, 3.0%-3.8% of AlSr40 powder,2.8%-3.6% of nanometer F3Ti powder, 3.2%-4.5% of nanometer NdF3 powder, and the balance FTD1 electrolytic copper powder; and the filling rate of the flux core is 32%-38%. Chemical components of deposited metal are uniform, inclusion, cracks and air hole defects are avoided, the air tightness is good, the minimum value of the tensile strength of the deposited metal is 306 MPa, the minimum value ofthe percentage elongation after fracture is 31.6%, and a component formed by fusion welding the seamless copper pipe completely meets the medical gas and vacuum requirements.
Owner:ZHENGZHOU UNIV

Straight-way solar energy heat exchange heat collector

The invention relates to a straight-way solar energy heat exchange heat collector using solar energy as a heat source and belongs to the technical field of medium and high temperature solar energy utilization. The straight-way solar energy heat exchange heat collector comprises a straight-way transparent tube, a multi-curved face metal heat exchange tube, heat exchange tube end enclosures, a metalexpansion joint, adsorbent storage rings, concave spacing sealing rings, metal snap rings, a working medium channel pipe, metal cover plates, sealing fixed plates, card type shield covers and vacuumconnectors, wherein the two ends of the multi-curved face metal heat exchange tube are welded and fixed with the heat exchange tube end enclosures; the working medium channel pipe is connected with the heat exchange tube end enclosures; the multi-curved face metal heat exchange tube is provided with the metal expansion joint; the working medium channel pipe passes through the center of the metal cover plate to form an multi-curved face metal heat exchange tube component which is integrally sleeved in the straight-way transparent tube and the two ends of which are sequentially provided with theadsorbent storage rings, the concave spacing sealing rings and the metal snap rings; the sealing fixed plates seal and fix the metal snap rings and the metal cover plates; the two ends of the straight-way transparent tube are provided with the card type shield covers; and the vacuum connectors are fixed on the card type shield covers.
Owner:WUXI C SOLAR NEW ENERGY TECH

Packaging container

The invention discloses a packaging container. The packaging container comprises a cover body, a bottle body and a textile with patterns. The cover body is a single cover or a combined cover, and when the cover body is the single cover, the textile is connected to the outer surface of the cover body in a gum application or hot melting mode; when the cover body is the combined cover, the textile is arranged between the cover body and a transparent housing; the bottle body is a single bottle or a combined bottle, and when the bottle body is the single bottle, the textile is connected to the outer surface of the bottle body in the same way; when the bottle body is the combined bottle, the textile is arranged between the bottle body and a transparent cover body. The patterns on the textile are manufactured through the processes such as printing and dyeing, plain embroidery, stereoscopic embroidery and pearl embroidery, the textile covers the surface or the interior of a bottle cover body or a main bottle body, existing patterns drawn through spraying, electroplating, printing and the like are replaced, the problem of product homogeneity is solved, and the quality defects of ink falling, paint falling and the like of existing processes are overcome. Decorative effects can be changed by replacing textiles, rapid and differential production is achieved, packaging materials can be recycled, and cost can be reduced.
Owner:INFINITUS (CHINA) CO LTD

Fingerprint identification module, electronic equipment and control method and control device thereof

The invention discloses a fingerprint identification module, electronic equipment and a control method and device thereof. In the fingerprint recognition module, a first ultrasonic transmitting part and a second ultrasonic transmitting part are both arranged on an ultrasonic fingerprint sensing part, and the first ultrasonic transmitting part, the second ultrasonic transmitting part and the ultrasonic fingerprint sensing part are all electrically connected with a control module; when the fingerprint identification module is in a fingerprint identification state, one of the first ultrasonic transmitting part and the second ultrasonic transmitting part and the ultrasonic fingerprint sensing part are both in a working state; under the condition that the fingerprint identification module is ina sounding state, the first ultrasonic transmitting part transmits first ultrasonic waves, the second ultrasonic transmitting part transmits second ultrasonic waves, the frequency of the first ultrasonic waves is not equal to that of the second ultrasonic waves, and the first ultrasonic waves and the second ultrasonic waves can be demodulated into audible sound waves through difference frequency.According to the scheme, the problem of relatively serious homogenization of the ultrasonic fingerprint identification module can be solved.
Owner:VIVO MOBILE COMM CO LTD

Shell assembly, preparation method of shell assembly and electronic equipment

The invention provides a shell assembly which comprises a shell, a first texture layer, a first coating layer and a decorative film, the first texture layer, the first coating layer and the decorative film are arranged on the shell, the shell is a curved transparent shell, the first texture layer is attached to the shell, and the first texture layer and the first coating layer are arranged on the same side or two opposite sides of the shell. The decorative film comprises a base material layer, a second texture layer and a second coating layer, wherein the second texture layer and the second coating layer are arranged on the base material layer, and the thickness of the first coating layer and / or the second coating layer is larger than or equal to 400 nm. The shell assembly has the appearance effect of double textures and double coating films, and at least one of the two coating film layers is thicker, so that the appearance effect of the coating film layer is enhanced and is more obvious and stronger visually, the appearance effect of the shell assembly is improved, and the shell assembly is stable in overall structure and high in reliability. The invention further provides a preparation method of the shell assembly and electronic equipment.
Owner:GUANGDONG OPPO MOBILE TELECOMM CORP LTD

Method for preparing lithium iron manganese phosphate-carbon composite material and lithium iron manganese phosphate-carbon composite material

The invention discloses a method for preparing a lithium iron manganese phosphate-carbon composite material and a lithium iron manganese phosphate-carbon composite material. The method comprises the following steps: (1) respectively preparing a soluble manganese-containing phosphate solution A, a soluble organic iron salt solution B, a soluble organic manganese salt solution C and a soluble organic lithium salt solution D; (2) mixing the solution A, B, C and D are mixed according to a predetermined element molar ratio to obtain a precursor solution; (3) the precursor solution obtained in step (2) is dried and granulated to obtain lithium manganese iron phosphate precursor powder; (4) the The precursor powder obtained in step (3) is sintered in a protective atmosphere to obtain a sintered material; (5) the material obtained in step (4) is pulverized, refined and vacuum packed to obtain lithium iron manganese phosphate-carbon composite material . The method of the invention is simple and feasible, and is suitable for large-scale industrial production. The obtained material can be used as a positive electrode active material for lithium ion batteries, and has low resistivity and excellent electrochemical performance.
Owner:JIANGSU LITHITECH CO LTD
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