248 results about "Thermal simulation" patented technology

The invention provides a visual detection method for interface water droplet induced electron generation in a high-temperature and high-pressure hydrocarbon-water system, and belongs to the technical field of in-situ analysis of electrons in mixed fluid. The detection method comprises the following steps: preparing a fused quartz capillary reaction cavity; loading a sample in a fused quartz capillary reaction cavity: sequentially inserting a thin capillary syringe filled with a silicomolybdic acid aqueous solution and a thin capillary syringe filled with a hydrocarbon liquid into the fused quartz capillary reaction cavity, and injecting the silicomolybdic acid aqueous solution and the hydrocarbon liquid; and carrying out visual detection on the water droplets. Through the visual fused quartz capillary thermal simulation experiment device, the color change of the water droplets at the interface of the silicomolybdic acid aqueous solution and the hydrocarbon fluid under the conditions of high temperature and high pressure is visually displayed, and the color characteristics of the water droplets are observed in real time by using a microscope, so that whether the water droplets induce electron generation or not is judged; the problem that electrons generated by water droplets cannot be directly observed and detected under high-temperature and high-pressure conditions is solved.

The invention relates to a method for decoupling organic matter primary-secondary cracking hydrocarbon generation conversion rate based on a gold tube hydrocarbon generation thermal simulation experiment. The method comprises the following steps: step 1, acquiring kerogen gold tube hydrocarbon generation thermal simulation experiment data; step 2, parametric modeling of the kerogen hydrocarbon generation process; step 3, constructing a least square target model under a multi-constraint condition; step 4, performing nonlinear least square optimization solution under the constraint condition; and 5, calculating the hydrocarbon generation conversion rate. According to the method, conversion rate calculation is carried out on the cumulant of each hydrocarbon generation process obtained through decoupling, the conversion rate evolution rule of the kerogen oil generation, gas generation, crude oil cracking gas generation, non-reactive carbon formation and other processes along with maturity change in the crude oil cracking process can be obtained, and a quantitative basis is provided for refined hydrocarbon generation evaluation.

The invention belongs to the technical field of numerical simulation and damage intelligent detection, and relates to an aircraft surface structure damage infrared feature simulation and sample generation method. According to the method, through the design of the virtual interface layer and the secondary homogenization, the magnitude order improvement of the full-size transient thermal simulation efficiency is realized while the physical precision is ensured, and batch simulation of a large number of damaged working conditions becomes possible. The physical effect of a sensor of the infrared camera is simulated through high fidelity, so that a simulation image is highly consistent with real external field data in the aspects of noise, texture and other characteristics, and the'simulation-reality 'domain difference is effectively reduced. By directly associating the simulation process with the preset damage parameters, automatic, accurate and zero-error generation of the truth value information is realized, and the problems of high manual labeling cost and poor consistency are fundamentally solved. According to the method, an efficient and reliable data generation way is provided for training a high-precision and high-robustness external field intelligent detection model, and the method has a definite engineering practical value.

The invention relates to a method for decoupling organic matter primary-secondary cracking hydrocarbon generation conversion rate based on gold tube hydrocarbon generation thermal simulation-solid product pyrolysis experiment. The method comprises the following steps: step 1, kerogen gold tube hydrocarbon generation simulation and solid product rock pyrolysis experiment data acquisition; step 2, parametric modeling of the kerogen hydrocarbon generation process; step 3, constructing a least square model of multi-source experimental information collaborative constraint; 4, carrying out optimization solution under a multi-source experiment information collaborative constraint condition; and 5, calculating the hydrocarbon generation conversion rate. According to the method, conversion rate evolution characteristics of each hydrocarbon generation process are quantitatively represented, conversion rate calculation is performed on cumulant of each hydrocarbon generation process obtained through decoupling, and conversion rate evolution rules of kerogen oil generation, kerogen gas generation, crude oil cracking gas generation, non-reactive carbon formation and other processes along with maturity changes in the crude oil cracking process can be obtained; and a quantitative basis is provided for refined hydrocarbon generation evaluation.

The invention discloses a thermodynamic system parameter distribution method and device, and the method comprises the steps: S1, analyzing a block definition diagram and an internal block diagram from a SysML model to obtain a module structure description, a module value attribute, an interface specification of an equipment unit and a thermodynamic parameter description, and generating an analysis result, the analysis result comprises equipment unit port and connector information. And S2, based on the analysis result, mapping the equipment module to a simulation software element through name matching, and generating a steady-state thermal simulation model. And S3, associating the module value attributes with element attributes of the steady-state thermal simulation model through a parameter mapping mechanism, and generating attribute mapping data. And S4, generating a complementation parameter list according to the external design value and the heat balance demand. Therefore, the efficiency and accuracy of parameter allocation are improved, manual intervention is reduced, and it is ensured that the allocation result meets the requirements of system performance.

The invention relates to the technical field of power battery thermal engineering and thermal safety, and discloses a liquid cooling-phase change coupling battery thermal management system based on a liquid phase rate weighting method, and the system comprises a battery module which is formed by stacking and arranging a plurality of single batteries along a first direction; the liquid cooling plate is arranged on the side surface of the battery module and is used for carrying out active heat dissipation on the battery module; the plurality of phase change material units are respectively filled between the adjacent single batteries; wherein the thicknesses of the plurality of phase change material units are non-uniformly distributed, the thickness of each phase change material unit is positively correlated with the corresponding average liquid phase rate reference value, and the average liquid phase rate reference value is the average liquid phase rate reference value of the corresponding phase change material unit under the same thickness setting condition. And the average liquid phase rate of the phase change material unit under the preset discharge working condition is obtained through thermal simulation calculation. According to the invention, the maximum temperature difference in the battery module is obviously reduced, the phase change process synchronization of each region is realized, the material utilization rate is improved, and the thermal stability of the system in the high-rate dynamic discharge process is enhanced.

The invention provides an optimization method for predicting the long-term welding reliability of a wire harness terminal and a conductor, and the method comprises the steps: collecting temperature and time data in a welding process, processing the data through a thermal simulation model, and obtaining the change trend of conductor lattice arrangement; according to the change trend of conductor lattice arrangement, the initial thickness and component distribution of oxide layer formation are obtained, and microstructure features of an oxide layer group are determined; aiming at the microstructure characteristics of the oxide layer group, simulating a long-term use environment by adopting an accelerated aging test to obtain a prediction curve of resistance increase; according to the quantitative model of the aging behavior, a performance evolution rule in the actual use environment is obtained, and the incidence relation between welding parameters and long-term reliability is determined; for a process scheme for improving the stability of a conductor, the resistance change of the conductor in a high-temperature environment is simulated and verified, and the accuracy of quantitative correlation is judged.

The invention relates to the technical field of medical image processing and three-dimensional reconstruction, and particularly discloses a reconstruction and analogue simulation method based on a cardiac image. The method comprises the following steps: firstly, preprocessing an input CT or MRI medical image, and automatically segmenting a heart multi-tissue structure by using an nnUNetv2 model, including a plurality of anatomical regions such as atrium, ventricle, myocardial tissue and blood pool; and then performing topology repair, smoothing processing and label resampling on the segmentation result to obtain a three-dimensional label body with a continuous structure and a complete boundary. And based on the optimized tag body, constructing a heart three-dimensional surface model by adopting a Marching Cubes algorithm, and generating a multi-material volume grid suitable for finite element analysis. According to an electrode position and a radio frequency parameter set by a user, a radio frequency ablation simulation model based on a Pennes biological heat conduction equation and an Arrhenius model is established, a temperature field and a tissue thermal damage range are calculated, and a simulation result is displayed in a three-dimensional mode in an overlapping mode. According to the method, the integrated process from medical image automatic segmentation to heart three-dimensional reconstruction and thermal simulation is realized, the segmentation precision, the modeling efficiency and the simulation reliability are improved, and the method can be applied to application scenes such as surgical planning, preoperative evaluation and medical teaching.

The invention relates to the technical field of industrial automatic measurement and control communication, and particularly discloses multi-protocol fusion intelligent measurement and control host equipment, which comprises a data acquisition module, a health assessment module, a thermal simulation module and a cooperative control module. The equipment adopts a dual-core hardware architecture with a bottom plate and a top plate, integrates seven communication interfaces, realizes multi-protocol parallel processing through a hardware accelerator and a FreeRTOS system, the protocol switching time does not exceed 10ms, and the health assessment module adopts an online incremental learning recurrent neural network to calculate the health state index of the super capacitor module in real time, so that the super capacitor module can be used as the health state index of the super capacitor module. The thermal simulation module predicts the thermal runaway risk level based on an embedded finite volume method, and the cooperative control module dynamically adjusts the rotating speed of a fan and the switching frequency of a power supply by adopting a Nash equilibrium optimization algorithm, so that early performance attenuation recognition, thermal runaway risk prediction and intelligent cooperative control of the super-capacitor module in an extreme environment are realized. And the reliability and the safety of the system are obviously improved.

The application discloses a kind of spaceborne storage module packaging method, spaceborne storage module and satellite, the method includes obtaining the model of packaging circuit module;Thermal simulation experiment is carried out based on the model of packaging circuit module, and heat flux density distribution information is obtained;Target cooling area is determined based on heat flux density distribution information;Packaging circuit module is installed on substrate;First shielding layer is manufactured using metal material of first density;The model of second shielding layer is obtained;Micro-channel heat dissipation area is determined based on target cooling area;Second shielding layer is manufactured based on the model of second shielding layer using metal material of second density;Third shielding layer formed by coating material is prepared on the inner surface of second shielding layer, to obtain composite shielding shell;Composite shielding shell is fixedly installed on substrate through insulating adhesive layer and contains packaging circuit module, to obtain spaceborne storage module.The application makes that composite shielding shell has anti-radiation effect and heat conduction effect simultaneously, which greatly improves the heat conduction efficiency.

The utility model discloses a Gleeble vacuum melting equipment device, which comprises a Gleeble main machine with a pressure head and a vacuum chamber, a melting device and a clamping and fixing device are further arranged in the vacuum chamber, and the melting device is connected to the pressure head through the clamping and fixing device. According to the smelting equipment disclosed by the utility model, the Gleeble thermal simulation testing machine is fully utilized, and the alloy can be quickly and conveniently smelted and new technological parameters of alloy smelting can be explored by controlling temperature rise and temperature drop at different temperatures and speeds in an experiment process, so that the time is saved, and the waste of materials is also reduced.

This invention relates to the field of electric drive technology, and particularly to a dynamic matching method, device, system, medium, and product for electric drive systems based on load spectrum driving. The method includes: acquiring load spectrum data based on the operating conditions of the electric drive system and the fatigue work cycle table of engineering machinery; classifying the load spectrum data, judging the motor's overload suitability, and compiling a cyclic load spectrum; obtaining the motor's theoretical temperature rise result and the motor's thermal simulation temperature result; dynamically adjusting the motor's thermal capacitance coefficient and thermal resistance coefficient based on the obtained motor theoretical temperature rise result and motor thermal simulation temperature result; and outputting the final motor thermal capacitance coefficient and motor thermal resistance coefficient. For redundancy optimization in motor overload matching, a closed-loop process of drive system load spectrum acquisition – load spectrum analysis – overload temperature rise theoretical calculation – motor thermal simulation verification is used to solve the problems of excessive redundancy, insufficient dynamic adaptability, and poor economy in traditional motor selection.

The invention discloses an evaluation device and method for the damage repair effect of an oil and gas well tubular column, and the device comprises a simulation tubular column which is provided with a containing cavity and a simulation leak; the pressure detection module is used for detecting the internal pressure of the simulation tubular column; the heating simulation assembly is used for heating the simulation tubular column; the pressurization simulation assembly is used for pressurizing the simulation tubular column; the spraying assembly comprises a pressure pump, a piston container, a connecting pipe and a spraying head which are sequentially communicated, the connecting pipe is provided with a shut-off valve used for controlling connection and disconnection of the connecting pipe, the spraying head stretches into the containing cavity through the connecting pipe, and the connecting pipe is configured to be capable of moving relative to the simulation pipe column so as to adjust the position of the spraying head relative to the simulation leak. By applying the method and the device, the actual repairing process of the pipe column in actual application can be more accurately simulated, and the accuracy of repairing effect evaluation is improved. And the repairing effect of the nozzle at different positions can be simulated, and the repairing process can be optimized.

The invention relates to the field of process simulation, and discloses an additive manufacturing numerical simulation method based on a thermal cycle curve, and the method comprises the steps: obtaining the physical performance parameters of a target component material; based on the physical performance parameters and related constraints of additive manufacturing, high-fidelity thermal simulation of the additive manufacturing process is carried out on the representative local area of the target component to obtain thermal historical data of the local area in the additive manufacturing process; extracting at least one thermal cycle curve representing the thermal history of the target component material from the result of the high-fidelity thermal simulation; establishing a global model of the target component; applying the thermal cycle curve as a thermal load to the global model; and based on the thermal cycle curve and clamping and heat dissipation boundary conditions of the target component, performing thermal-mechanical coupling analysis on the global model to predict stress and deformation of the target component after additive manufacturing is completed. The micro-channel additive manufacturing method can effectively improve the finished product quality of micro-channel additive manufacturing.

The utility model relates to the technical field of seepage heat transfer simulation, and discloses a high-efficiency seepage heat transfer simulation device in a high-temperature and high-pressure environment, which comprises a supporting mechanism for stable supporting, and a seepage sealing assembly for simulating a rock-soil layer in an earth crust is arranged at the upper end of the supporting mechanism. The upper end of the seepage sealing assembly is provided with a sealing heating monitoring assembly used for heating and monitoring fluid to be percolated, and the upper end of the sealing heating monitoring assembly is provided with a pressurizing mechanism used for pressurizing the fluid to be percolated in the sealing heating monitoring assembly. Simulation operation of seepage fluid is achieved, damage to equipment under the high-pressure condition is avoided, the driving mechanism accurately adjusts pressure through gear transmission, stable operation of a pressurization system and coordinated operation of the whole system are ensured, the precision of seepage and heat transfer simulation is improved, and the operability and safety of experiments are effectively improved.

The application relates to a method for decoupling primary-secondary cracking hydrocarbon generation conversion rates of organic matter based on a gold tube hydrocarbon generation thermal simulation-solid product pyrolysis experiment, which comprises the following steps: step 1, kerogen gold tube hydrocarbon generation simulation and solid product rock pyrolysis experiment data acquisition; step 2, parameterized modeling of the kerogen hydrocarbon generation process; step 3, construction of a least square model cooperatively constrained by multi-source experimental information; step 4, optimization solution under the cooperatively constrained condition of multi-source experimental information; and step 5, hydrocarbon generation conversion rate calculation. The application quantitatively characterizes the conversion rate evolution characteristics of each hydrocarbon generation process, and through conversion rate calculation on the cumulative amount of each hydrocarbon generation process obtained by decoupling, the conversion rate evolution law of the kerogen oil generation, gas generation and oil cracking process, the oil cracking gas formation and the unreactive carbon formation process with the change of the maturity can be obtained, and a quantitative basis for fine hydrocarbon generation evaluation is provided.

The invention provides a multi-physical coupling simulation method and device for a millimeter wave radar radio frequency integrated microsystem, and belongs to the technical field of simulation. The method provided by the invention comprises the following steps: constructing an initial physical model; performing electromagnetic simulation on the initial physical model to obtain electromagnetic performance and component power loss; performing thermal simulation on the initial physical model by taking the power loss of the component as a heat source to obtain the thermal performance of the initial physical model; constructing a multi-objective optimization problem based on the electromagnetic performance and the thermal performance, and obtaining a parameter group of the initial physical model; establishing a Pareto frontier solution set based on the plurality of parameter groups; and determining a target parameter group from the Pareto leading-edge solution set based on an engineering target, and taking the target parameter group as an operation parameter group of the initial physical model. The invention provides a multi-physical coupling simulation method and device for a millimeter wave radar radio frequency integrated microsystem. The method and device are used for improving the design efficiency and precision of the millimeter wave radar radio frequency integrated microsystem.

The invention discloses an intelligent optimization method for power-memory-computing three-dimensional packaging heat dissipation reliability based on heterogeneous integration, and belongs to the technical field of advanced packaging and thermal management of integrated circuits. The method comprises the following steps: firstly, determining packaging structure parameters, and obtaining a sample data set through a mixed horizontal orthogonal test and finite element thermal simulation; secondly, on the basis of signal-to-noise ratio and range analysis, the influence weight of each parameter on the junction temperature is quantified, key parameters and secondary parameters are distinguished, the secondary parameters are fixed to the optimal level, the key parameters are determined, and the thermal simulation model is corrected; then training a random forest regression model based on all test data, and constructing an agent model; and finally, performing automatic collaborative optimization on the specific size of each layer of chip by adopting an NSGA-II multi-target genetic algorithm according to the proxy model, so as to minimize the highest junction temperature at the same time. According to the method, high-cost physical simulation is converted into an efficient intelligent optimization process, and the thermal reliability, the design efficiency and the product performance stability of packaging are remarkably improved.

The invention relates to a pipe network modeling method and device for pebble bed flow heat exchange simulation of a high-temperature gas cooled reactor, a reactor core of the high-temperature gas cooled reactor is formed by stacking N layers of graphite brick structure units, and the method comprises the following steps: determining that a pipe network model of the high-temperature gas cooled reactor comprises N + 1 layers of model structures based on the N layers of graphite brick structure units; wherein each layer of model structure comprises multiple types of target nodes and multiple types of target resistance models, and the target resistance models comprise transverse joint resistance models; acquiring channel parameters corresponding to a transverse seam between two adjacent layers of graphite brick structure units, and determining a transverse seam resistance model according to the channel parameters; according to a preset connection relationship, connecting each target node in the pipe network model through the target resistance model to construct the pipe network model; wherein in each layer of model structure, specified adjacent target nodes are connected through a transverse joint resistance model. According to the technical scheme, the transverse seam can be effectively included in the modeling process, and the fidelity of system simulation is improved.

This provides a real-time simulation and model prediction method for arc additive manufacturing based on event sequences. [Solution] In a real-time process of arc additive manufacturing of metal structures, the method includes the steps of: activating units in real time by event sequence and guiding the heat source in real time; setting parameters for the heat source model, thermal simulation, and mechanical simulation, and performing a real-time thermal-mechanical simulation of arc additive manufacturing; and constructing a theoretical model for a simplified calculation of the residual stress field and correcting the calculation model prediction.

The application provides a kind of ultra-low orbit satellite whole process coupling thermal simulation method and system.The method comprises: constructing whole process coupling thermal simulation system;In control layer, the geometric grid file and orbit attitude parameter file of satellite are imported by input setting interface, and simulation time and task flow time sequence are set;The control layer passes the imported parameters to the calculation layer, and starts time iteration calculation;In the calculation layer, three calculation modules are coupled, and the calculation results are transmitted to the data layer for integration;The data layer transmits the integrated data file to the output display interface to show the simulation results in the form of numerical value, curve or cloud picture.The ultra-low orbit satellite whole process coupling thermal simulation method proposed by the application constructs an integrated thermal simulation system that integrates multiple core calculation modules, while supporting numerical, curve, cloud picture and other forms of visual output, which facilitates designers to intuitively and comprehensively evaluate the satellite thermal management effect.

The invention relates to the field of coating materials, in particular to a coating material, a coating base material, application of the coating material, a preparation method of the coating base material and a hydrocarbon source rock thermal simulation method. According to the total mass of the coating material, the coating material comprises the following components of 0.1 wt%-5 wt% of manganese, 3 wt%-4 wt% of niobium and tantalum, 1 wt%-3 wt% of copper, 0.02 wt%-1.8 wt% of carbon, 0.01 wt%-3 wt% of silicon, 83.19 wt%-95.86 wt% of chromium and gold and not larger than 0.01 wt% of iron and / or titanium. The coating material disclosed by the invention has excellent high temperature resistance, high pressure resistance and corrosion resistance.

The application discloses an ice wind tunnel non-uniform particle diameter multi-particle cloud simulation method, device, equipment and medium, and the method comprises the following steps: S1, grid division is performed on a calculation region in the ice wind tunnel; S2, air flow field calculation is performed by using the grid and convergence is calculated; S3, on the basis of the flow field calculation convergence, a discrete phase model is introduced, combined with a multi-nozzle incident source position, boundary characteristics of the non-uniform particle diameter multi-particle incidence, non-uniform particle diameter cloud multi-particle non-steady state motion heat transfer simulation is completed; S4, cloud particles are updated once when the flow field calculation in the iteration process is set to a step number; and S5, when the number of incident particles and the number of particles leaving the calculation domain reach a dynamic balance, if the evaluation of the particle diameter distribution and the cloud uniformity at the outlet section does not meet the requirements, the nozzle incident source position and the cloud particle boundary setting are redesigned, and the coupling iteration calculation of the cloud non-steady state is performed. The application can obtain more accurate distribution results of the cloud at each section position.

The invention discloses a method, a device, equipment and a medium for detecting the trickling paint filling rate of a stator, and relates to the technical field of detection of the trickling paint filling rate of the stator, and the method comprises the steps: preparing a plurality of stator samples, and obtaining the trickling paint filling rate of each stator sample and the actually measured temperature difference between a winding and an iron core in each stator sample in a heat balance state; establishing a thermal simulation model of the stator based on the trickling paint filling rates of all the stator samples and the actually measured temperature differences corresponding to the trickling paint filling rates, obtaining simulation temperature differences under a plurality of different trickling paint filling rates, and constructing a first fitting function with the trickling paint filling rates as independent variables and the temperature differences as dependent variables; according to the first fitting function, obtaining simulation data pairs of a plurality of temperature differences and trickle varnish filling rates corresponding to the temperature differences, and constructing a second fitting function with the temperature differences as independent variables and the trickle varnish filling rates as dependent variables; and measuring the temperature difference between the to-be-detected stator inner winding and the iron core to obtain the trickling paint filling rate. The invention provides a non-destructive trickling paint filling rate detection method.

This invention discloses a heat sink structure optimization design method based on a non-dominated sorting genetic algorithm, belonging to the field of heat sink optimization design technology. The method first determines the structural parameters to be optimized (heat sink length, width, height, fin thickness, fin spacing, substrate thickness) and the optimization objective function (maximum junction temperature of power devices, heat sink mass, heat sink entropy productivity). Then, Latin hypercube sampling is used to sample parameters and establish a geometric model. Sample data is constructed through thermal simulation, and a surrogate model is established using response surface methodology. Finally, multi-objective optimization is performed based on the non-dominated sorting genetic algorithm to obtain the Pareto optimal solution set, and the best solution is selected through comprehensive performance evaluation indicators. This invention effectively reduces heat sink mass and cost while ensuring heat dissipation performance, shortens the R&D cycle, and is applicable to the heat dissipation optimization design of power devices in power electronic systems.

The application belongs to the field of battery cell manufacturing, and provides a winding method of high-temperature-resistant battery cell, which comprises the following steps: obtaining the thermal stress distribution of a diaphragm through thermal simulation, and calculating the thermal film crack stress of the diaphragm according to the thermal stress distribution of the diaphragm; obtaining the finite element model of the wound diaphragm and performing thermal simulation to obtain the thermal film crack area of the wound diaphragm; performing crack edge analysis on the thermal film crack area to obtain a crack accumulation area; coating a high-temperature-resistant sealing coating material on the diaphragm to obtain a heat-resistant diaphragm, and covering the crack accumulation area with a ceramic modified coating material; winding the heat-resistant diaphragm and positive and negative electrode sheets to obtain a battery cell, and packaging the battery cell to obtain a battery. According to the winding method of the embodiment of the application, the battery cell can avoid the problem of explosion caused by the rupture of the diaphragm due to thermal expansion under high temperature and high load.

The invention relates to the technical field of high-voltage equipment test and fault diagnosis, in particular to a transformer local overheating fault simulation system and method. The system comprises an eddy current overheating simulation unit, a resistor overheating simulation unit, a test sample unit and a temperature measurement unit, the eddy current overheating simulation unit comprises an iron core and a plurality of coils arranged on the iron core, two ends of the iron core are not closed to form an air gap, and the plurality of coils are non-uniformly distributed on the iron core to generate a gradient magnetic field at the air gap; the resistor overheating simulation unit comprises a wiring board and wiring terminals connected to the two ends of the wiring board, a pressure-sensitive element is arranged on the wiring board, and a pressure adjusting mechanism is arranged on the pressure-sensitive element; the test object unit is arranged in the air gap and comprises a plurality of parallel leads in an array mode, the temperature measurement unit is a distributed optical fiber temperature measurement system, and temperature measurement optical fibers are arranged in one or more leads of the test object unit. The problems of non-uniform leakage magnetic field simulation, internal temperature measurement under strong interference, compound fault simulation and multi-physical field verification are solved at the same time.

The present application relates to the technical field of wide band gap semiconductor devices, and particularly relates to a Ga2O3 power device heat dissipation optimization method based on a hetero-substrate structure, which comprises the following steps: combining a first principle to construct an interface atomic model, adopting the first principle to screen a high-thermal-conductivity substrate material, constructing a hetero-interface model to analyze key physical parameters, calculating an interface thermal resistance based on a machine learning potential function and a molecular dynamics method, and combining finite element thermal simulation to carry out macro-scale thermal analysis and structure optimization. The present application covers the whole process from material screening to interface optimization and then to device-level thermal simulation, systematically improves the thermal management performance of the Ga2O3 power device, and simultaneously improves the efficiency and reduces the trial and error cost, thereby providing differentiated strategies for adapting to various complex application scenarios.

The invention particularly relates to a power battery fast charging time optimization method and device, electronic equipment and a storage medium, and the method comprises the steps: obtaining basic parameters and initial state information of a power battery, inputting the basic parameters and the initial state information to a preset second-order equivalent circuit model, obtaining the dynamic characteristics of the power battery, inputting the dynamic characteristics, the basic parameters and the initial state information of the power battery into a preset thermal simulation model to obtain a temperature change simulation result of the power battery in the fast charging process; and based on the basic parameters, the initial state information, the dynamic characteristics of the dynamic electricity and the temperature change simulation result, by taking the shortest charging time as a target, optimizing a preset charging map by using a preset optimization algorithm to obtain an optimal charging map, and obtaining the optimal charging time of the power battery according to an optimal charging path corresponding to the optimal charging map. Therefore, the problem that the influence of the temperature rise rate on the charging time is not considered in the related technology is solved, and the fast charging efficiency is improved.

The invention discloses a fire-fighting foam stability test platform and a foam average drainage rate acquisition method. The test platform comprises a bearing device, a heating assembly and a performance test assembly, wherein the center of the bottom of the bearing device is provided with an opening and is externally connected with a flow guide pipe; the heating assembly comprises an upper heater and a lower heater, and the bearing device is horizontally placed on the lower heater; the performance testing assembly comprises a weighing objective table, a separated liquid collecting container, a separated liquid weighing balance, a thermocouple and a temperature acquisition instrument, the lower heater is arranged on the weighing objective table, the weighing objective table and the lower heater are provided with through holes corresponding to an opening in the bottom of the bearing device and used for being externally connected with a flow guide pipe, and the separated liquid collecting container is communicated with the bearing device through the flow guide pipe; the separated liquid collecting container is placed on the separated liquid weighing balance, and the measuring end of the thermocouple is located in a preset area in the bearing device and is in electric signal connection with the temperature collecting instrument. The invention aims to improve the authenticity of the test through dual thermal simulation and multi-parameter synchronous measurement.