36results about How to "Achieve mutual integration" patented technology

The invention relates to the field of heat management of electric vehicles, and in particular to an integrated thermal cycling system of an electric vehicle. The integrated thermal cycling system of the electric vehicle comprises a motor system heat dissipation device, a motor, a motor controller, an air-conditioning system, a first water pump, an air heater, a water cooling jacket, a battery pack, a heater, a battery pack heat dissipation device, a second water pump, a heat exchanger and an evaporator; and a refrigerant pipeline and a water pipeline are connected onto the heat exchanger, the water cooling jacket is installed on the battery pack, and the motor system heat dissipation device, the first water pump, the motor controller and a motor are sequentially and circularly connected with each other according to the circulating water flowing direction, so that a motor cooling cycling circuit is formed. When the environment temperature is low, the battery pack is preheated and heated and an air conditioner in the vehicle is warmed up before the electric vehicle is started, when the environment temperature is high, the battery pack is cooled, a cab is refrigerated and the motor and the motor controller are cooled, accordingly, high requirements on the self operating temperatures of the motor system and a battery are satisfied, so that the service lives and efficiency of the motor system and the battery are increased.

The invention provides an electric vehicle thermal management system comprising a motor cooling system, a battery thermal management system and an air conditioning system; the motor cooling system comprises a motor system radiator, a motor, a motor controller, a charger, a DCDC, and a motor water pump; the battery thermal management system comprises a battery system radiator, a cell pack, a heat exchanger, a water heating heater, and a battery water pump; the air conditioning system is a heat pump type air conditioner with an air heating PTC. The electric vehicle thermal management system can cool down the motor system, the battery system and a passenger cabin when the environment temperature is high, can heat up the cell pack and the passenger cabin when the temperature is low, thus satisfying high demands on usage temperature of the motor system and battery system, and improving motor system and battery system life and efficiency.

The invention discloses a method for shale-gas-well storing-layer brittleness comprehensive evaluation. The method includes the following steps that to-be-measured shale samples are subjected a triaxial compression testing experiment, and a complete stress-strain curve is obtained; a brittleness drop coefficient R, a stress depreciation coefficient P and a softening modulus M are calculated, the brittleness indexes corresponding to the brittleness drop coefficient R, the stress depreciation coefficient P and the softening module M are subjected to normalization processing respectively, and a comprehensive brittleness index Bd is obtained; correction is carried out according to a Bd calculation model, the corrected brittleness index Bd<3> serves as an objective function, parameters such as a shale dynamic elastic modulus E in well logging data serve as independent variables, function regression is carried out, a multi-regression function Y of the Bd<3> is obtained and substituted into different-layer-section storing-layer well logging parameters, and the comprehensive brittleness indexes of different well-section storing layers are obtained. According to the method, the whole condition of shale damaging is considered, and the brittleness characteristics of shale can be comprehensively responded; meanwhile, the brittleness of different-depth, different-confining-pressure and different-well-section storing layers is analyzed by combining shale-gas-well logging information, and the adaptability is high.

The invention discloses a DC charging pile detecting system and method. The system includes a master control machine, a battery management system (BMS) simulator, a DC charging pile interface circuitsimulator and a load system AV900. The BMS simulator is used for simulating the consistent output of a DC charging pile. The DC charging pile interface circuit simulator is used for simulating the onand off control of a circuit charged by the DC charging pile and collecting signals before and after the switch-on and switch-off of the circuit. The load system AV900 is used for simulating a load ofan electric vehicle charged by the DC charging pile. The master control machine communicates with the BMS simulator and the load system AV900, and the detection of the DC charging pile is completed by controlling the BMS simulator, the DC charging pile interface circuit simulator and the load system AV900. According to the DC charging pile detecting system and method, the technical problems of along test time of the charging pile and low test efficiency caused by a low degree of automation in the related technology are solved.

The invention discloses an unapproved construction information high precision acquisition method based on a mobile terminal, and relates to the information acquisition technology field. The unapproved construction information high precision acquisition method comprises steps: processing of line data, spatial data displayed in the mobile terminal, and acquisition of unapproved construction information. The unapproved construction information high precision acquisition method is advantageous in that a method of acquiring, integrating, and pushing information for location awareness in different environments is used to effectively support integration of audio and video information, image information, position information, and attribute information by taking place name and address data as a basis, and the multidirectional comprehensive acquisition and collection of the unapproved construction information is realized; during the data acquisition, automatic acquisition is carried out, and range value precision is high, and a range value is precise to a centimeter level, and therefore the high precision position locating and the acquisition of the related data are realized; before the data pushing, the safety of the data is guaranteed by adopting an information encryption pushing strategy based on the position and a mobile terminal data strategy, and therefore safe transmission of a line and red line data during a mobile inspection process is realized, and the currency of the unapproved construction data acquisition is improved.

The invention discloses a mortar making system and process suitable for a large horizontal sand silo of a mine filling station. The system comprises a mortar supply and transport system, a high-pressure gas supply pipe (9), a high-pressure water supply pipe (8), a horizontal sand silo (7), an output pipeline of the horizontal sand silo, a cement silo (15), an output system of the cement silo, a stirring device (14) and a filling pipeline, wherein the outlet of the mortar supply and transport system is arranged above the horizontal sand silo (7); the output pipeline of the horizontal sand silo(7), the output system of the cement silo (15) and the stirring device (14) converge; the filling pipeline is connected with a goaf (18); the horizontal sand silo (7) begins from a sand discharge opening; a mortar making area, a transport area and a sand storage area are divided along the trend of the horizontal sand silo (7); annular high-pressure water supply branch pipes and high-pressure gas supply branch pipes are paved in the mortar making area; high-pressure water supply branch pipes and high-pressure gas supply branch pipes are paved in the transport area in parallel; the high-pressure gas supply pipe (9) is connected with the high-pressure gas supply branch pipes in the horizontal sand silo (7); and the high-pressure water supply pipe (8) is connected with the annular high-pressure water supply branch pipes and the high-pressure water supply branch pipes in the horizontal sand silo (7). The system and the process have the following effects: the horizontal sand silo achieves high-capacity continuous filling; the filler quality is ensured; the unsupported roof time of the goaf is reduced; the filling station construction investment is reduced; mining and filling of the mineare balanced; and the system and the process are favorable for the mine to achieve safety production and environmental protection.

The invention discloses a type of Bacillus subtilis, which is named HU 528, is preserved in Guangdong Culture Collection Center at Apr 23rd, 2018, and is assigned the accession number of GDMCC No.60364. The invention also discloses an enzyme preparation prepared from the Bacillus subtilis, and also discloses an application of preparing a yeast enzymolysis product, having blood pressure reducing activity, by the Bacillus subtilis. The enzyme preparation prepared from the Bacillus subtilis HU 528 has the activities of protease and beta-glucanase and can destruct yeast cell wall and hydrolyze yeast protein. The yeast enzymolysis product has excellent bioactivity; in-vivo and in-vitro activity tests prove that the enzymolysis product at least has blood pressure reducing and anti-oxidizing activity and can be used as a non-medicinal treatment food for hypertension patients. The product can effectively prevent, control, alleviate and auxiliarily treat the hypertension.

The invention discloses a large horizontal sand silo suitable for combined filling of mortar in dressing plants and dry tailings in tailings ponds. The sand silo is characterized by being divided into a mortar making region (I), a transport region (II) and a tailings storage region (III), wherein ring-shaped high-pressure water supply branch pipes (c) and high-pressure gas supply branch pipes (a) are laid in the mortar making region (I); high-pressure water spray nozzles (d) are horizontally installed on the ring-shaped high-pressure water supply branch pipes (c); high-pressure gas spray nozzles (b) are vertically installed on the high-pressure gas supply branch pipes (a); high-pressure water supply branch pipes (c) and high-pressure gas supply branch pipes (a) are laid in the transport region (II) in parallel; high-pressure water spray nozzles (d) are horizontally installed on the high-pressure water supply branch pipes (c); high-pressure gas spray nozzles (b) are vertically installed on the high-pressure gas supply branch pipes (a); the dip angle of the bottom plate of the horizontal sand silo is 23-26 degrees; the length of the mortar making region (I) along the trend of the sand silo is 3-5 meters; the length of the transport region (II) along the trend of the sand silo is 5-8 meters; and the length of the tailings storage region (III) along the trend of the sand silo is 4-7 meters. The large horizontal sand silo is applied to mortar making, can be used for realizing high-capacity continuous filling, ensuring the quality of the fillers, shortening the unsupported roof time in the goafs, reducing the construction investment of the filling stations and ensuring mine mining and filling to achieve balance and is beneficial to realization of safety production and environmental friendliness of the mines.

The invention discloses a reference plane determination method and determination system. The reference plane determination method comprises the steps that a depth image is acquired; edge extraction is performed on the depth image so as to form an edge image, wherein the edge image comprises multiple plane figures; and the plane figures of the edge image are selected through screening so as to determine a reference plane. According to the technical scheme, the reference plane in a real scene can be determined so that a virtual coordinate system can be established based on the reference plane, and finally the objective of mutual fusion of virtual objects and the real scene can be realized. Therefore, the virtual objects and the real scene are mutually fused through the technical scheme so that the experience feeling of real-time matching can be brought to users, and the reference plane determination method and determination system have wearable portability and freedom.

The invention provides a circuit board temperature distribution rapid test method based on a small amount of measurement point data, and the method comprises the steps: sorting circuit board power devices from high to low according to the working temperature, and selecting the first s devices as key components of a to-be-tested temperature value; acquiring temperature values of the key componentsby using a thermocouple measurement method; determining the thermal power consumption of each key component; determining the thermal resistance of each key device; obtaining geometric coordinates of each key device; fitting the temperature distribution of the circuit board by taking the parameters of the key devices as input; sorting the circuit board power devices from high to low according to the working temperature, selecting h devices after the s key devices as non-key devices, and collecting parameter data to optimize the temperature distribution of the circuit board; iterating the previous step until the precision of a temperature distribution calculation result of the circuit board meets the requirement; and calculating the temperature value of each point of the circuit board, and drawing a circuit board temperature distribution cloud chart.

The invention discloses a multi-scale environmental data fusion method. The multi-scale environmental data fusion method comprises the following steps of: firstly, dividing all acquired environmentaldata into several groups according to different spatial and temporal resolutions with each group of data of the same scale range and the same scale unit; secondly, organizing the environmental data within each group, which including environmental data unification, missing environmental data interpolation and correlation of different types of environmental data; thirdly, transforming scale ranges of different sets of data into required scale ranges, and transforming scale units of different sets of data into required scale units; fourthly, conducting fusions of all groups of data and constructing the environmental data with the same temporal and spatial resolution. The multi-scale environmental data fusion method has the advantages that the environmental data can be divided according to different spatial and temporal resolutions, the environmental data of different spatial and temporal resolutions can be respectively organized, and data fusion is finally conducted; scale ranges and scale units therein can be chosen according to actual needs; the the multi-scale environmental data fusion method is wildly applicable.

The invention relates to a control method applied to an aromatherapy machine. The aromatherapy machine comprises a water tank having a preset volume and Wifi audio electronics. The control method comprises the steps of receiving a voice communication command of a user; according to the voice communication command, performing oscillation and decomposition on essential oil in the water tank throughultrasonic waves so as to produce spray; performing parsing on the voice communication command so as to obtain an audio electronics control command; according to the audio electronics control command,controlling the Wifi audio electronics to give out a first voice frequency signal; and according to the rhythm characteristic of the first voice frequency signal, regulating the oscillation frequencyand the decomposition rate of the essential oil. According to the control method of disclosed by the embodiment of the invention, wireless voice operation and control on the aromatherapy machine canbe realized, and the communication compatibility and the control simplicity and convenience of the aromatherapy machine are improved; and besides, the shape of the spray produced by the aromatherapy machine generates self-adapted changes along with the rhythm of the first voice frequency signal, so that better audiovisual effects are brought to users, the rhythm sense of the spray produced by thearomatherapy machine can be increased, and more comprehensive high-end comfortable experience sense is brought to the users.

The invention relates to the field of heat management of electric vehicles, and in particular to an integrated thermal cycling system of an electric vehicle. The integrated thermal cycling system of the electric vehicle comprises a motor system heat dissipation device, a motor, a motor controller, an air-conditioning system, a first water pump, an air heater, a water cooling jacket, a battery pack, a heater, a battery pack heat dissipation device, a second water pump, a heat exchanger and an evaporator; and a refrigerant pipeline and a water pipeline are connected onto the heat exchanger, the water cooling jacket is installed on the battery pack, and the motor system heat dissipation device, the first water pump, the motor controller and a motor are sequentially and circularly connected with each other according to the circulating water flowing direction, so that a motor cooling cycling circuit is formed. When the environment temperature is low, the battery pack is preheated and heated and an air conditioner in the vehicle is warmed up before the electric vehicle is started, when the environment temperature is high, the battery pack is cooled, a cab is refrigerated and the motor and the motor controller are cooled, accordingly, high requirements on the self operating temperatures of the motor system and a battery are satisfied, so that the service lives and efficiency of the motor system and the battery are increased.

The invention relates to the technical field of cow leather mat preparation, and discloses a hyaluronic acid cow leather mat preparation process which comprises the following steps of (1), preparing raw materials including the following raw materials in parts by mass: 8-15 parts of a hand feeling agent, 6-15 parts of a penetrating agent, 25-40 parts of a fixing agent and 8-12 parts of hyaluronic acid, (2) raw material mixing: stirring and mixing the hand feeling agent, the penetrating agent and the fixing agent to prepare a mixed tanning agent, (3) standing: standing the mixed tanning agent prepared in the step (2) for 12-48 hours, (4) stirring: adding hyaluronic acid into the mixed tanning agent after standing, and stirring to obtain a mixed solution, (5) spraying: spraying the mixed solution stirred in the step (4) on the surface of the cow leather mat for at least two times, and (6) shaping, specifically, enabling the cow leather mat sprayed in the step (5) to be subjected to hot pressing shaping. The problem that hyaluronic acid and the cow leather mat are mutually combined for application in the prior art is effectively solved.

The invention discloses a modular bionic wall-climbing robot which is composed of a front symmetrical part and a rear symmetrical part and can be assembled to jointly execute a task or independently execute the task. The independent part comprises a walking mechanism, a vehicle body structure, a pitching mechanism, a power supply and control assembly and a quick-change interface assembly; the walking mechanisms are symmetrically distributed on the left side and the right side of the lower layer of the vehicle body structure, the quick-change interface assembly is fixed to the middle of the vehicle body structure, the pitching mechanism is connected with the front portion and the rear portion of the robot to achieve relative pitching movement between the two portions, and the power supply and control assembly is installed on the upper portion in the vehicle body structure and connected with the pitching mechanism. Quick-change modular detection is supported, modular reuse of multiple functions such as adhesive tape, dew point and glass is achieved, module customization and function expansion are supported, professional detection technicians can be far away from a high-altitude operation site, performance and state detection of curtain wall glass and accessory structural parts of the curtain wall glass can be achieved, and high-altitude operation safety risks of detection personnel are eliminated.

The double pump-motor hydraulic driving system for lifting oil cylinder of engineering machinery has two pumps and one motor connected coaxially; frequency varying motor driving the hydraulic system and recovering the inertial energy, and gravitational potential energy and braking energy in the operation course of the executing mechanism; proportional direction valve to control the direction of the executing element to act as control valve at low speed and small flow rate and control the recovery of energy. While needing relatively high work speed, the double pump and the motor work in parallel to reach the required work speed. The present invention has the high response speed and high precision of valve controlled system and the high efficiency of pump controlled system as well as raised efficiency, relatively high work speed and low element cost.

The present invention discloses a construction method for a compound thrombus clearing preparation bioactivity chromatography finger print. The construction method comprises the following steps: (1) preparing a compound thrombus clearing preparation test solution, precisely sucking 10 mul of the compound thrombus clearing preparation test solution, and injecting into a double-pump dual-gradient high performance liquid chromatograph to obtain a compound thrombus clearing preparation HPLC finger print; (2) preparing a mixed reference substance solution, precisely sucking 10 mul of the reference substance solution, and injecting into the double-pump dual-gradient high performance liquid chromatograph to obtain a reference substance HPLC finger print; (3) adopting a reference substance control method, and adopting an RRLC / MS / MS technical method to prove 21 chemical components in the finger print; and (4) analyzing correlation between the 21 chemical components and bioactivity difference, clarifying bioactivity component groups, and establishing a compound thrombus clearing preparation bioactivity chromatography finger print. According to the present invention, the compound thrombus clearing preparation HPLC finger print and the bioactivity component groups obtained from chromatograph efficiency analysis are combined to construct the compound thrombus clearing preparation bioactivity chromatography finger print so as to completely monitor safeties, effectiveness and quality uniformities of raw material herbs, semi-finished products and finished products.

The invention discloses a wafer-level light sensing system-level packaging structure comprising: a first silicon substrate; a second silicon substrate disposed above the first silicon substrate and having a cavity structure penetrating through the top surface and the bottom surface of the second silicon substrate; a third silicon substrate disposed above the second silicon substrate and having a light sensing through hole; a photosensitive chip mounted on the front surface of the first silicon substrate in a corresponding region in the cavity structure, and aligned with the light sensing through hole; a flip-chip soldered on the front surface of the first silicon substrate in another corresponding region in the cavity structure; and an external solder ball.

The invention discloses a tool setting device of a numerical control hobbing veneer shearing machine, and belongs to the technical field of numerical control hobbing veneer shearing machines, the tool setting device comprises a numerical control shearing machine, a symmetrical reciprocating mechanism, a first hobbing tool and a second hobbing tool, and further comprises a lifting device, a turnover device, an adjusting device and a tool setting device, the symmetrical reciprocating mechanism is arranged on the numerical control shearing machine, the first hobbing cutter and the second hobbing cutter are symmetrically arranged on the symmetrical reciprocating mechanism, the lifting device is arranged on the numerical control shearing machine, the cutter setting device is arranged on the lifting device, the turnover device is arranged on the lifting device, the number of the adjusting devices is two, and the adjusting devices are arranged on the numerical control shearing machine. The two adjusting devices are arranged at the side ends of the first hobbing cutter and the second hobbing cutter correspondingly, the cutters can be accurately positioned before products are manufactured, follow-up operation is facilitated, and the device is suitable for the products of different sizes.

The invention discloses a large horizontal sand silo suitable for combined filling of mortar in dressing plants and dry tailings in tailings ponds. The sand silo is characterized by being divided into a mortar making region (I), a transport region (II) and a tailings storage region (III), wherein ring-shaped high-pressure water supply branch pipes (c) and high-pressure gas supply branch pipes (a) are laid in the mortar making region (I); high-pressure water spray nozzles (d) are horizontally installed on the ring-shaped high-pressure water supply branch pipes (c); high-pressure gas spray nozzles (b) are vertically installed on the high-pressure gas supply branch pipes (a); high-pressure water supply branch pipes (c) and high-pressure gas supply branch pipes (a) are laid in the transport region (II) in parallel; high-pressure water spray nozzles (d) are horizontally installed on the high-pressure water supply branch pipes (c); high-pressure gas spray nozzles (b) are vertically installed on the high-pressure gas supply branch pipes (a); the dip angle of the bottom plate of the horizontal sand silo is 23-26 degrees; the length of the mortar making region (I) along the trend of the sand silo is 3-5 meters; the length of the transport region (II) along the trend of the sand silo is 5-8 meters; and the length of the tailings storage region (III) along the trend of the sand silo is 4-7 meters. The large horizontal sand silo is applied to mortar making, can be used for realizing high-capacity continuous filling, ensuring the quality of the fillers, shortening the unsupported roof time in the goafs, reducing the construction investment of the filling stations and ensuring mine mining and filling to achieve balance and is beneficial to realization of safety production and environmental friendliness of the mines.

The invention discloses a mortar making system and process suitable for a large horizontal sand silo of a mine filling station. The system comprises a mortar supply and transport system, a high-pressure gas supply pipe (9), a high-pressure water supply pipe (8), a horizontal sand silo (7), an output pipeline of the horizontal sand silo, a cement silo (15), an output system of the cement silo, a stirring device (14) and a filling pipeline, wherein the outlet of the mortar supply and transport system is arranged above the horizontal sand silo (7); the output pipeline of the horizontal sand silo (7), the output system of the cement silo (15) and the stirring device (14) converge; the filling pipeline is connected with a goaf (18); the horizontal sand silo (7) begins from a sand discharge opening; a mortar making area, a transport area and a sand storage area are divided along the trend of the horizontal sand silo (7); annular high-pressure water supply branch pipes and high-pressure gas supply branch pipes are paved in the mortar making area; high-pressure water supply branch pipes and high-pressure gas supply branch pipes are paved in the transport area in parallel; the high-pressure gas supply pipe (9) is connected with the high-pressure gas supply branch pipes in the horizontal sand silo (7); and the high-pressure water supply pipe (8) is connected with the annular high-pressure water supply branch pipes and the high-pressure water supply branch pipes in the horizontal sand silo (7). The system and the process have the following effects: the horizontal sand silo achieves high-capacity continuous filling; the filler quality is ensured; the unsupported roof time of the goaf is reduced; the filling station construction investment is reduced; mining and filling of the mine are balanced; and the system and the process are favorable for the mine to achieve safety production and environmental protection.

The invention discloses a silicon carbon-graphite negative electrode material and a preparation method and application thereof, and the preparation method of the negative electrode material comprises the following steps: S1, oxidizing carbon fibers, mixing the oxidized carbon fibers with nitrogen-doped graphite particles, a surfactant and silicate ester, carrying out a hydrothermal reaction, carrying out solid-liquid separation, and collecting a solid phase; s2, under the protective atmosphere, the solid phase obtained in the step S1 and metal powder are mixed and then subjected to a reduction reaction; s3, sequentially carrying out carbon coating and zirconium oxide coating on a product obtained in the step S2; the nitrogen content of the nitrogen-doped graphite particles is 0.5%-1.0%. According to the negative electrode material, carbon fibers are used as a matrix; the silicon particles and the nitrogen-doped graphite particles are connected through the carbon fibers, and the carbon fibers serve as a substrate of the silicon particles and a conductive network to fix the silicon particles and the nitrogen-doped graphite particles in the negative electrode conductive network. And then through carbon coating and zirconium nitride coating, the finally prepared negative electrode material has excellent cycle performance.

The invention belongs to the technical field of catering accessories, and particularly relates to a multifunctional dining table cleaning trolley. According to the dining table cleaning trolley, tableware can be recycled through a tableware containing column, food residue cleaning is achieved through a food residue scraper, tableware recycling and food residue cleaning can be achieved, and multiple functions are combined; the dining table cleaning trolley is low in cost, energy-saving, clean, low in manufacturing cost, simple to operate and convenient to move; compared with pure manual cleaning, the dining table cleaning trolley has the advantages that productivity can be greatly liberated, and human beings can be freed from personally cleaning food residues which are vigorous; the bottomends of supporting legs are provided with brake pulleys with pull buckles capable of being pulled up and down, so that moving and fixing of the trolley are convenient.

A flushing executing mechanism for a vacuum closestool is disclosed by the invention. The flushing executing mechanism is characterized in that the mechanism includes a top cover and an executing mechanism body, a water valve assembly is arranged on the top cover and comprises a valve body, a water inlet and a water outlet are formed in the valve body, a water pipeline is arranged between the water inlet and the water outlet, and a first valve rod is further arranged on the valve body; the first valve rod is provided with a mounting cavity inside, a second valve rod is arranged in the mounting cavity, and a valve head matched with the sealing water pipeline is arranged on the second valve rod; the top cover is further provided with a corrugated rubber film located in the executing mechanism body, a vacuum cavity is formed between the corrugated rubber film and the top cover, the second valve rod is sleeved with a first spring, the corrugated rubber film is sleeved with a driving block for controlling the second valve rod to slide up and down in a sealed mode, and an air channel communicated with the vacuum cavity is formed in the top cover. Through the arrangement, the executing mechanism body is connected with the water valve assembly, the executing mechanism can also achieve the function of a water inlet valve, the occupied space of the whole equipment is reduced, and the application range of the executing mechanism is wider.

The invention discloses a silicon carbon-graphite negative electrode material and its preparation method and application. The preparation method of the negative electrode material includes the following steps: S1. After oxidizing the carbon fiber, mix it with nitrogen-doped graphite particles, a surfactant and Silicic acid ester mixed hydrothermal reaction, solid-liquid separation, and solid phase collection; S2, under a protective atmosphere, the solid phase obtained in step S1 is mixed with metal powder to undergo a reduction reaction; S3, the product obtained in step S2 is sequentially carbon-coated and zirconia coating; the nitrogen content of the nitrogen-doped graphite particles is 0.5%-1.0%. The negative electrode material of the present invention uses carbon fiber as a matrix; the carbon fiber connects silicon particles and nitrogen-doped graphite particles, and the carbon fiber serves as the matrix and conductive network of silicon particles to fix the silicon particles and nitrogen-doped graphite particles in the negative electrode conductive network. Then through carbon coating and zirconium nitride coating, the final negative electrode material has excellent cycle performance.

The invention provides a scoring method and device, a mobile terminal, a server and a storage medium, and the method comprises the steps: building the communication connection with the server, receiving a competition starting prompt and a scoring table sent by the server, enabling a plurality of pieces of to-be-scored test question information to be correlated with the scoring table, and displaying the plurality of pieces of to-be-scored test question information; displaying the test question information to be scored in the scoring table, so that scoring personnel score the plurality of piecesof test question information to be scored and fill an obtained first scoring result into the scoring table; counting the total score of the plurality of pieces of test question information to be scored and obtaining a total scoring result, and when one piece of test question information to be scored does not have the scoring information filled by the scoring personnel, setting the score of the test question information to be scored without the scoring information filled by the scoring personnel as a full score. According to the invention, the grading automation degree can be improved, the traditional grading process is simplified, and the grading accuracy and grading efficiency are improved.

An urban planning scene demonstration device disclosed by the present invention comprises a lower fixing plate, an upper fixing plate, supporting plates, a display board assembly and a display board bracket assembly, the two sides of the top of the lower fixing plate are fixedly connected with the supporting plates, and the tops of the supporting plates are fixedly connected with the bottom of the upper fixing plate. Sliding guide assemblies are arranged on the opposite faces of the upper fixing plate and the lower fixing plate, and the connecting end of the top of the inner side of the display board bracket assembly is in sliding connection with the connecting end of the top of the display board assembly. The upper fixing plate, the lower fixing plate and the supporting plate are arranged to form the frame which can play a role in supporting and fixing, firstly, demonstration can be facilitated, secondly, the display board assembly can be stored in the frame, the overall size is reduced, and carrying and transportation are facilitated; annular sliding grooves and connecting grooves are formed in the opposite faces of the upper fixing plate and the lower fixing plate, so that the display board assembly can be conveniently moved to different positions.