222 results about "Auto industry" patented technology

The invention relates to the technical field of laser welding, in particular to a laser welding system control method for metal accessories. The method comprises the following steps that automobile industry metal fitting data are obtained, welding demand analysis is conducted according to the automobile industry metal fitting data, and therefore welding demand data are obtained; laser welding feature extraction and resistance spot welding feature extraction are carried out according to the welding demand data, so that laser welding data and resistance spot welding data are obtained; carrying out welding simulation according to the laser welding data and the resistance spot welding data so as to obtain welding simulation data; welding form feature extraction and welding strength feature extraction are carried out according to the welding simulation data, so that welding form data and welding strength data are obtained; and carrying out welding defect detection according to the welding form data and the welding strength data so as to obtain welding defect data. Automatic adjustment and accurate control of the laser welding process are achieved based on the laser welding technology.

The invention relates to the technical field of data processing, and discloses a visual data comprehensive processing method for automobile industrial data based on digital twinning. The method comprises the following steps: performing recursive quartering on a three-dimensional space of an automobile general assembly workshop through a workshop process pixel quadtree index algorithm, performing process type marking on multi-source heterogeneous data according to a process identification mapping rule, and allocating a workshop real-time data set to a quadtree index structure according to space coordinates to perform process state aggregation, and according to the viewport pixel mapping relation, performing weighted aggregation calculation on the process state aggregation matrix to obtain a pixel comprehensive display value, and based on the pixel comprehensive display value, performing layered rendering processing on the workshop multi-process parallel scene. According to the invention, the visual processing efficiency and the user interaction response speed of the digital twin system in the automobile industry are improved.

The invention discloses a fluoride-free environment-friendly flame-retardant PC (polycarbonate) material and a preparation method thereof. The fluoride-free environment-friendly flame-retardant PC material is prepared from the following raw materials in parts by weight: 68-99.98% of polycarbonate resin; 0.01 to 25% of a flame retardant; 0.01 to 5% of a synergistic flame retardant; and 0-2% of a processing aid. The flame retardant does not contain any flame retardant, does not generate toxic gas or smoke in the combustion process and is harmless to the environment and human bodies, the components of the flame-retardant PC material meet the PFAS environment-friendly requirement, the flame-retardant PC material belongs to an environment-friendly material, and the prepared fluoride-free environment-friendly flame-retardant PC material is applied to the fields of the automobile industry, the electric appliance and instrument industry, the mechanical industry and the like.

The invention belongs to the field of computer aided design, and discloses a design method of a multistable metamaterial with an ideal energy absorption characteristic, which comprises the following steps of: firstly, carrying out theoretical analysis on a buckle to establish a mathematical model; then, according to the theoretical solution of the rigidity value of the buckle structure, reverse topological optimization design is carried out on the curved beam, so that a force displacement curve of the curved beam has negative rigidity and peak force corresponding to the buckle. The buckle structure and the optimized and customized curved beam are assembled through the functional part, and the multistable metamaterial unit cell with the ideal energy absorption characteristic can be obtained. And programming design is carried out on the unit cells, so that the required metamaterial can be constructed to meet the energy absorption requirement under the complex load. The technical scheme is widely applicable to the fields of aerospace, automobile industry, building protection and the like, and excessive rebound of impact energy is avoided while the impact resistance of equipment is improved.

The invention relates to the technical field of data processing, and discloses an automobile industrial database rapid management method and system based on virtual-real mapping. The method comprises the steps that a vehicle type mixed line recognizer recognizes the vehicle type switching state of a production line, and dynamic data of a vehicle type identifier, a process path and a resource demand are acquired; adjusting a partition strategy of the heterogeneous database according to the dynamic data, and generating a partition mapping table and an access weight matrix; binding the mapping table with the three-dimensional twin model through a time sequence association algorithm to form an automatically switched virtual-real mapping object pool; predicting a cross-vehicle-type data demand based on the object pool, and generating a preloading queue and a conflict avoidance strategy; and the vehicle type switching trigger processes the preloading queue to realize zero-delay data switching and consistency verification. The response speed and the data access efficiency of database management in the vehicle model line changing process are improved.

The present application relates to a low-yield ratio 420MPa low-alloy high-strength steel and a preparation method, belonging to the technical field of steel manufacturing. In terms of mass fraction, the chemical composition of the low-alloy high-strength steel includes: C: 0.07% to 0.12%, Si: 0.10% to 0.40%, Mn: 1.60% to 1.80%, P: ≤0.015%, S: ≤0.010%, Alt: 0.020% to 0.060%, Nb: 0.03% to 0.05%, Ti: 0.01% to 0.03%, N≤0.005%, and matrix element Fe. The composition design gives full play to the solid solution strengthening of C and Mn and the fine grain strengthening and precipitation strengthening of Nb and Ti microalloys. At the same time, the continuous full annealing process does not require slow cooling treatment, which improves production efficiency and obtains low-cost, low-yield ratio 420MPa low-alloy high-strength (yield ratio ≤0.8) steel with both strength and excellent plasticity. This type of steel can withstand greater plastic deformation while meeting higher strength requirements without plastic instability, achieving the needs of lightweight automotive industry and excellent stamping integral forming of structural parts, and has broad application prospects.

The invention relates to the technical field of bottom protection plates, and provides an engine bottom protection plate and a preparation method thereof. The engine bottom protection plate is prepared from the following raw materials in parts by weight: 40 to 50 parts of polypropylene, 15 to 20 parts of glass fiber, 5 to 10 parts of silicon carbide modified carbon fiber, 5 to 9 parts of nano silicon dioxide, 2 to 3 parts of compatilizer, 0.5 to 1 part of antioxidant, 0.3 to 0.5 part of calcium stearate and 0.4 to 0.6 part of polyethylene wax. The engine bottom guard plate provided by the invention is high in hardness, also has certain acid and alkali resistance, keeps good mechanical properties, and meets the development of the modern automobile industry and the change of consumer demands.

The invention relates to the technical field of structural part injection molding, in particular to a manufacturing method and equipment for a continuous fiber reinforced structural part, and aims to solve the problem that a structural part manufactured in the prior art cannot meet the requirements for light weight and high strength at the same time. Comprising the following steps: heating a thermoplastic composite material sheet and putting the thermoplastic composite material sheet into a mold; designing an original material formula, preparing materials according to the formula, and mixing the materials into a uniform melt; conveying and injection molding of melt materials are controlled through a reversing valve; the manufacturing data is associated with the product. The equipment comprises an extruding and mixing mechanism for melting, plasticizing and mixing each material in an original material formula, an injection molding mechanism for realizing the injection of a melt material, an injection molding machine mold locking unit for completing molding and curing, a control system for coordinating the whole process and an information tracing mechanism for ensuring the traceability of a product. The scheme is suitable for manufacturing functional parts with extremely high requirements on performance and safety in aerospace and automobile industries.

The invention relates to a preparation method of a multi-scale SiC particle heterostructure reinforced magnesium-based composite material, and belongs to the field of metal-based composite materials and preparation thereof. According to the preparation method, an in-situ authigenic second phase generated by rare earth elements is added, micron-scale, submicron-scale and nano-scale SiC reinforcement particles form a heterostructure formed due to size difference, and after a subsequent plastic deformation process, the multi-scale reinforcement particles form a heterostructure with a layered distribution characteristic; the effects of second phase strengthening, reinforcement particle strengthening and heterostructure strengthening are generated, and meanwhile the modulus and strength of the magnesium-based composite material are improved. And moreover, a stirring casting mode is adopted for preparation, the production process is shortened, the production cost is reduced, the high-modulus and high-strength magnesium-based composite material is prepared, and the preparation method has important significance in promoting application of the high-performance magnesium-based composite material and expanding the application range of the magnesium-based composite material in the fields of automobile industry, aerospace and the like.

The invention relates to a high-toughness corrosion-resistant titanium alloy, which comprises the following chemical components in percentage by weight: 1.2-2.8% of Ni; 5.0 to 7.0 parts of Al; 3.0 to 7.0 parts of Cu; 3.0 to 5.0 parts of V; 0.3 to 0.7 part of Si; 0.15 to 0.35 part of O; and the balance of Ti. The invention relates to a preparation method of a high-toughness corrosion-resistant titanium alloy. The preparation method sequentially meets the following steps and content requirements: smelting an ingot by adopting a consumable electrode vacuum furnace; the forging blank is subjected to heat preservation for 1-3 hours at the temperature of 1000 DEG C or above, and then quenching is conducted to obtain a full- Elements of Cu, Si, Ni and O are added, so that the width of the martensite lath after refining and quenching is realized; performing hot rolling to obtain a nano ultra-fine grain structure; and after solid solution treatment, quenching is conducted, and the high-toughness corrosion-resistant titanium alloy is obtained. According to the method, the equipment requirement is low, and the strength of the titanium alloy is greatly improved under the condition that the plasticity and toughness of the material are not reduced; and the composite material has excellent comprehensive mechanical properties and can be widely applied to many important fields such as aerospace, biomedical treatment, petrochemical engineering, automobile industry and ocean engineering.

The invention relates to the technical field of coatings, and discloses a carbon nanotube modified acrylic resin coating and a preparation method thereof. The coating disclosed by the invention is prepared from the following raw materials in parts by weight: 100 parts by weight of a carbon nanotube modified water-based acrylic resin emulsion, 0.5 to 0.8 part by weight of a dispersing agent, 8 to 10 parts by weight of deionized water, 0.1 to 0.3 part by weight of a de-foaming agent, 5 to 7 parts by weight of a coalescing agent, 0.1 to 0.3 part by weight of a rheological agent and 0.8 to 1 part by weight of a flatting agent. A physical-chemical cross-linked network structure is formed in the coating by utilizing a long-chain structure and a dialkenyl structure contained in the functionalized carbon nano tube, and the physical-chemical cross-linked network structure and the uniformly dispersed carbon nano tube synergistically improve the mechanical property of the material, and imidazole quaternary ammonium salt and thymol structures contained in the functionalized carbon nano tube synergistically improve the antibacterial property of the material. The paint prepared by the invention has a relatively wide application value in the fields of furniture, woodware, automobile industry and the like.

The invention, which belongs to the technical field of the automobile industry, discloses an intelligent chassis energy management system for a mountain city, and the system comprises a sensing module which is used for collecting topographic data and vehicle state data; the decision module is used for predicting the kinetic energy recovery demand of the vehicle in real time by taking the topographic data as input according to a pre-constructed deep learning prediction model, and generating dynamic decision information based on the kinetic energy recovery demand and the vehicle state data; the execution module is used for controlling each subsystem of the intelligent chassis to execute corresponding adjustment operation according to the dynamic decision information output by the decision module in real time; and the optimization module is used for acquiring the actual execution effect of the execution module in real time, adjusting related decision parameters in the dynamic decision information based on a difference result between the actual execution effect and the expected effect of the dynamic decision information, and optimizing and training the deep learning prediction model through the actual execution effect and the corresponding dynamic decision information.

The present disclosure relates generally to the field of adhesives, more specifically to the field of structural adhesive tapes, in particular for use in bonding metal parts. The present disclosure also relates to a method of bonding two parts and to a composite article. The present disclosure is further directed to the use of a structural adhesive tape for industrial applications, such as construction and automotive applications, in particular for body-in-white bonding applications in the automotive industry.

The invention discloses an EMB clamping force prediction method considering multi-source uncertainty, and belongs to the technical field of automobile industry, and the method comprises the steps: obtaining a historical mapping relation between clamping force and control input, building prior distribution, and employing normal distribution as the prior distribution to describe an expected range of the clamping force; the method comprises the following steps: acquiring observation data of clamping force historically collected by a sensor, introducing the observation data into a likelihood function, and setting a relationship between the observation data and real clamping force to be influenced by multi-source noise to generate an error model so as to describe probability distribution of the observation data under specific clamping force by maximizing the likelihood function; on the basis of a Bayesian inference framework, updating the trust degree of the clamping force predicted by the EMB through prior distribution and a likelihood function, and calculating posterior distribution by using known prior information and real-time observation data; and extracting 95% confidence interval and uncertainty index in the posterior distribution, and when the confidence interval or the system entropy value is greater than the uncertainty index, rejecting or optimizing the prediction result of the clamping force predicted by the EMB.

The invention relates to the field of epoxy vitreous body materials, and discloses a preparation method of a self-repairing epoxy vitreous body material and a prepared material.The preparation method comprises the steps that an epoxy resin copolymer, a modified curing agent and an organic acid catalyst are subjected to a first reaction, the molar ratio of the epoxy resin copolymer to the modified curing agent is 2: (0.5-5), and a second reaction is conducted; the molar ratio of the organic acid catalyst to the epoxy resin copolymer is (1-10): 20. The self-repairing epoxy vitreous body material provided by the invention is high in self-repairing efficiency and short in self-repairing time; the self-repairing epoxy vitreous body material is wide in preparation raw material source and flexible and changeable in formula, the proportion of the raw materials can be adjusted according to actual needs so as to regulate and control the mechanical property of the material, recycling and reutilization can be achieved under certain conditions, environmental pollution is reduced, and the self-repairing epoxy vitreous body material is suitable for industrial production. And the composite material has great application potential in products such as structural components required by space shuttles and automobile industries.

The invention relates to the technical field of functional materials, in particular to flexible wave-absorbing silicon carbide fiber cloth and a preparation method thereof. The fiber cloth takes modified silicon carbide fibers as a matrix, graphene nanosheets are uniformly dispersed in the fiber cloth, and the surface of the fiber cloth is coated with a wave-absorbing coating; the wave-absorbing coating comprises the following components in percentage by weight: 30-50% of epoxy resin, 20-35% of carbon nanotubes and the balance of cobalt ferrite nanoparticles; the diameter of the silicon carbide fibers is 5-10 [mu] m, the thickness of the graphene nanosheets is 5-10 nm, the particle size of the cobalt ferrite nanoparticles is 50-100 nm, the pipe diameter of the carbon nanotubes is 10-30 nm, and the length of the carbon nanotubes is 1-10 [mu] m; the silicon carbide fiber cloth prepared by the invention not only has excellent flexibility and mechanical property, but also has excellent wave-absorbing property, and can be widely applied to the fields of stealth clothing, automobile industry, aerospace and the like when being used for preparing stealth composite materials.

The present invention relates to the field of titanium alloy materials, and specifically refers to an α+β titanium alloy with high strength and low yield ratio and a preparation method thereof. The chemical composition of the titanium alloy is Al: 5.0-7.0; V: 3.0-5.0; x: 0.1-10 (x is a eutectic β-stabilizing element such as Fe, Mn, Cr, Ni, Cu, etc.); the remainder is Ti. The preparation method of the titanium alloy is as follows: first, after keeping warm in the two-phase region for a period of time, it is rapidly cooled to room temperature to obtain a lamellar α″ martensite precursor; then the alloy with the lamellar α″ martensite precursor is cold rolled at room temperature, and the total strain is in the range of 10% to 50%. Finally, the cold-rolled plate is annealed for different times in the temperature range of 800-850°C to obtain an α+β titanium alloy with a two-stage equiaxed α phase structure. The α+β titanium alloy with high strength and low yield ratio prepared by the present invention can be widely used in important fields such as aerospace, marine engineering, petrochemical industry, automobile industry and biomedicine.

The invention provides an anti-aging high-strength nylon material for automobiles and a preparation process of the anti-aging high-strength nylon material, and is applicable to the field of polymer composite materials. The material comprises 50%-60% of a nylon matrix material, 30%-40% of glass fibers, 0.3%-0.6% of an antioxidant composition, 0.3%-0.5% of an ultraviolet light absorber, 0.2%-0.4% of a light stabilizer, 0.1%-0.2% of an anti-hydrolysis agent, 0.1%-0.3% of a lubricant and 5%-10% of a flexibilizer. The preparation process comprises the steps of drying of the nylon matrix and the glass fibers, high-speed mixing, twin-screw extrusion, cooling and pelletizing and injection molding, and the tensile strength, the impact strength and the aging resistance of the prepared nylon material are remarkably improved by optimizing the proportion and process parameters. The material is suitable for high-performance application of automobile structural parts, exterior trimming parts and the like, overcomes the defects of the traditional nylon in the aspects of weather resistance, mechanical strength and processability, and provides a high-performance and long-life material choice for the automobile industry.

The invention discloses a high-temperature-resistant and high-humidity-resistant polyisocyanate composition and a preparation method thereof. The polyisocyanate composition comprises a mononuclear body structure which is formed by aliphatic diisocyanate and alkoxy silane monoisocyanate and contains silicon group isocyanurate, and the mononuclear body structure is formed by aliphatic diisocyanate and alkoxy silane monoisocyanate. The isocyanate composition provided by the invention has the advantages of no addition of a solvent, low viscosity, excellent stability in a high-temperature and high-humidity environment and simple manufacturing process, and is especially suitable for the fields with complex and changeable use environments and longer service life, such as the fields of coatings and adhesives in the automobile industry.

The invention is a fusion reactor and can solve energy problems. The reactor could be particularly important for the automotive industry because it can be used as a primary energy source. It enables the advancement of electromobility and could be installed in any vehicle. The reactor consists of a fusion chamber containing two fluid accelerators designed to send a fusion-capable, incompressible liquid in the form of very small microdroplets, generated in pairs, to a collision point. The microdroplets are then forced into collision at speeds of approximately 50–200 km / s. Due to the very high speed of the microdroplets, partial nuclear fusion occurs at the collision point, releasing energy that accelerates the components of the microdroplet in all directions and also impacts the following microdroplets, leading to additional nuclear fusion reactions there.The molecules / atoms of the liquid are additionally optimally aligned by electric fields for nuclear fusion of the deuterium atoms, directly at the collision point.

The invention discloses a bypass inductor echelon current limiting topology and method for solid-state power distribution equipment, relates to the technical field of power electronic distribution, and is suitable for solid-state power controllers in the fields of aerospace, new energy automobiles and industrial automation. In order to solve the problems that when a large capacitive load is started, a current peak is likely to be generated to damage a device, and an existing current limiting scheme is low in efficiency or large in size, the topology comprises an input circuit, a main power circuit, an auxiliary circuit, a current limiting circuit, an absorption circuit and a load side circuit. According to the method, the auxiliary circuit switch tube is turned on in an echelon mode, and the main switch tube is turned on to complete starting after load voltage approaches power supply voltage and reaches a non-voltage-difference condition. According to the planar inductor integrated PCB, the size is reduced, the problem of long-term heating of a resistor is solved, the TVS overvoltage protection and RC anti-interference design are matched, the current peak is effectively restrained, the system efficiency and reliability are improved, and the high-power-density and differential-pressure-free starting requirements are met.

The invention relates to the technical field of impellers, in particular to an integral impeller forming method and an integral impeller, and the integral impeller is manufactured through the steps of manufacturing a water-soluble core, manufacturing an impeller wax mold, removing the water-soluble core in the wax mold, manufacturing slurry of a mold shell, manufacturing the mold shell, dewaxing and cleaning, roasting and forming parts. The water-soluble core is used for supporting the inside of the wax mold, a complex internal structure is formed through an accurate molding process, the size accuracy and the surface quality of the impeller are ensured, then an integral shell is obtained through three-layer coating, alloy is poured into the shell at high temperature to be solidified to form an impeller part, the integrity of the impeller and the consistency of materials are ensured, and the service life of the impeller is prolonged. According to the method, the risk of size inaccuracy caused by secondary splicing of the impeller is effectively avoided, the precision and the quality of a casting part are greatly improved, particularly in the precision casting field such as the aerospace industry or the automobile industry, remarkable technical advantages are achieved, and the performance reliability and the service life of impeller parts are ensured.

The present invention relates to aluminum alloy products that can be riveted and possess excellent ductility and toughness properties. The present invention also relates to a method of producing the aluminum alloy products. In particular, these products have application in the automotive industry.

The application relates to a dual-phase high-entropy ceramic material for high-temperature thermal barrier coatings and a preparation method thereof, in particular to a dual-phase high-entropy ceramic (La 0.2 Nd 0.2 Gd 0.2 Y 0.2 Ho 0.2 )2Zr2O7 with low thermal conductivity and high thermal expansion coefficient, which is mainly used for thermal isolation, thermal barrier coatings and other applications in high-temperature environments. The application is prepared by adopting a solid-phase reaction sintering process through accurate design of the combination of rare earth elements, forms a stable dual-phase structure, effectively inhibits grain growth through grain boundary pinning, and thus maintains a nanoscale grain structure. Meanwhile, the material can efficiently block heat transfer at high temperatures through optimization of phase proportion, and the thermal expansion characteristics are matched with a metal base layer, effectively avoiding the falling risk caused by the difference in thermal expansion of the two, and thus greatly improving the service life and reliability of the material in a high-temperature environment. The high-entropy ceramic material of the application can be widely applied to fields with high demand for high-temperature thermal isolation in aerospace, aviation, automobile industry and the like, is especially suitable for thermal barrier coatings, high-temperature thermal insulation materials and other high-temperature thermal insulation applications, and has important engineering application value.

The present application relates to a kind of flame-retardant polyamide compositions and its preparation method and application.The flame-retardant polyamide compositions, including the following weight parts of component:PA6T / 66 resin 28~70 parts, PA6I / 6T resin 5~25 parts, flame retardant 10~21 parts.The flame-retardant polyamide compositions of the present application has good stability of mechanical properties (tensile strength) in long-period heat retention injection molding, and can be applied to long-time molding cycle large product in the field of automobile industry.

The present invention relates to a spot welding assembly line processing method, belonging to the field of spot welding technology. The method comprises the following steps: providing a positioning jig, an assembly line, a welding robot, a handling robot, a laser position finder and a visual inspection mechanism; in the process of handling, the laser position finder scans the parts and the positioning jig to form a scanning path and transmits it to the welding robot, after the scanning is completed, when the positioning jig moves to the welding station through the assembly line, the visual inspection mechanism determines the position of the positioning points on the positioning jig and the parts and forms a new scanning path, and compares the new scanning path with the scanning path accepted by the welding robot. If the comparison results are consistent, the welding robot performs welding according to the set program, and if they are inconsistent, the welding robot corrects the set program according to the comparison error and then performs welding. The present invention solves the problem of poor positioning accuracy when using a two-dimensional camera to position large-size parts in the existing automobile industry production and assembly process.

The present application belongs to the field of composite materials and lithium batteries, and particularly relates to a preparation method of isotropic porous carbon material, a porous carbon reinforced nonmetal or metal composite material and a preparation method and application thereof. Liquid polyacrylonitrile oligomers are subjected to heat treatment technology under a protective atmosphere to obtain a porous carbon precursor material; the porous carbon precursor material is subjected to high-temperature graphitization enhancement technology under a protective atmosphere to obtain a porous carbon material; and quantitative pore making is performed by controlling oxygen flow under an oxygen atmosphere to obtain an isotropic porous carbon material with uniform pore structure distribution. The above-prepared isotropic porous carbon material is used as a reinforcing phase to be combined with metal or nonmetal to prepare composite materials with different properties, so as to improve the performance of the composite materials, which can be applied to lightweight high-strength structural parts in the fields of aerospace and automobile industry, and can also be used as negative electrode materials in the field of lithium batteries.

The invention relates to the automotive industry, and more particularly to indicating means, and can be used for indicating vehicle turning at junctions and on roads. The technical result consists in the reliability and durability of the elements of a vehicle turn indicating means disposed inside a rear light and the possibility of factory installation of the indicating means during assembly of a vehicle. This is achieved in that the claimed vehicle turn indicating means comprising a turn sign consisting of a light-emitting diode strip contains an electric circuit board comprising at least one set of the following electrical elements: resistors, diodes, transistors, light-emitting diodes and a capacitor, which are connected according to the circuit diagram shown in figure 1, wherein the turn sign consisting of a light-emitting diode strip is mounted inside a rear light of a vehicle.

The present application discloses a method for designing the position parameters of a rear license plate and a method for installing the same, relating to the field of automotive industry development technology. The method comprises the following steps: S1: creating a virtual baseline, placing the rear license plate based on the virtual baseline, and respectively constraining the Z-height between the lower edge of the rear license plate and the virtual baseline, the license plate inclination angle, and the license plate viewing angle; S2: determining the angle between the light plate and the license plate, and placing the rear license plate light; S3: determining its transverse center end face, and aligning the rear camera center line with the transverse center end face; S4: determining the field of view spacing; establishing a dimension chain constraint model, setting the vertical height from the lower edge of the rear camera to the baseline, and obtaining the correlation between the license plate inclination angle and the Z-height. The method for designing the position parameters and the method for installing the present application, while meeting regulatory requirements, can quickly design the position of the rear license plate by establishing a dimension chain constraint model, thereby resolving the technical problem of low passive verification efficiency in the prior art.

This invention provides a self-inspection control method, device, and server for vehicle production and maintenance, relating to the technical field of the automotive industry. The method includes: when the power supply to an ordered vehicle is detected to be on, connecting an information domain controller to the vehicle's manufacturing execution system (MES) based on a key sent by a vehicle networking service platform; sending vehicle information provided by the MES to the information domain controller, enabling the information domain controller to perform a self-inspection process to prevent errors in the vehicle's electronic control system; after the self-inspection of the vehicle's electronic control system passes, switching the information domain controller to production mode and using an electronic inspection program and a set of external cameras to perform a production self-inspection process on the vehicle's electronic control components and external equipment, so that the ordered vehicle can be delivered after the vehicle's production self-inspection passes. This invention can significantly improve the accuracy and efficiency of fault detection during vehicle production and maintenance.