1425 results about "Phase-change material" patented technology

The invention relates to the technical field of refrigeration material preparation, in particular to an efficient passive radiation refrigeration material suitable for a sub-super environment and a preparation method and application of the efficient passive radiation refrigeration material. The method comprises the following steps: uniformly mixing thermoplastic polyurethane, sunlight high-reflection inorganic particles and a phase change material in a solvent; after a chemical foaming agent is added, the obtained suspension liquid is heated and foamed in a confinement mold, and wet gel is formed; and finally, carrying out freeze drying treatment to obtain the composite porous aerogel. The prepared material has a micro-nano porous skeleton formed by TPU, and inorganic particles and PCM are uniformly dispersed in the skeleton wall. Through component cooperation and a special porous structure, the material has extremely high sunlight reflectivity and mid-infrared emissivity, self-adaptive temperature regulation and control are achieved through PCM phase change, the problem that refrigeration of a traditional material fails in the sub-environment such as the vertical surface is effectively solved, and efficient sub-super-environment heat management is achieved.

The invention relates to the technical field of lasers, in particular to a laser heat management device and a control method thereof, the laser heat management device comprises a cooling substrate, the cooling substrate is internally provided with a micro-channel, the micro-channel comprises a main channel and a branch channel, and the main channel is used for circulating cooling water; the cooling substrate is provided with a detection control area, the detection control area is located at the joint of the branch channel and the main channel, the detection control area is provided with a phase change micro-valve and a detection assembly, the detection assembly is used for collecting temperature data, the phase change micro-valve comprises a phase change material and a flexible separation blade, and after the valve is opened, the phase change material generating phase change pushes the flexible separation blade, and the phase change micro-valve is connected with the detection assembly. The communication state of the main channel and the branch channel is controlled; the main controller is used for receiving the temperature data of all the detection control areas and controlling the valves of the corresponding detection control areas to be opened or closed according to the deviation between the temperature data and the target temperature. The temperature gradient of the laser can be reduced at least so as to ensure that the laser realizes a long-term stable working state.

The invention relates to the field of photovoltaic power generation, and particularly discloses a climate self-adaptive photovoltaic cooling method and system based on interface evaporation, and the system comprises a hydrophilic and hydrophobic composite radiation refrigeration film which is used for capturing atmospheric moisture through a radiation refrigeration effect under a low-radiation condition to form a cooling water source; the bionic water conveying structure comprises a modified silicone tube and a juncus roemerianus bundle and is used for conveying the captured water to the high-level water tank through capillary action; according to the invention, by fusing interface evaporation and radiation refrigeration technologies, the system realizes efficient cooling and energy recovery of the photovoltaic module; under the condition of strong irradiation, the gradient wettability interface evaporation layer takes away waste heat of the module through directional water film flow, so that the temperature of the photovoltaic module is reduced, the photoelectric conversion efficiency is improved, and meanwhile, the daily generating capacity is increased; the cooling effect is obviously better than that of a traditional natural convection or phase change material cooling mode, and efficient heat transfer is achieved through phase change latent heat utilization of interface evaporation.

The invention discloses a reprocessable solid-solid phase change material based on dynamic borate bonds and a preparation method of the reprocessable solid-solid phase change material. Based on the mechanism that boric acid ester is subjected to ester exchange during thermal stimulation, a dynamic cross-linking agent containing boric acid ester is adopted for cross-linking a polyurethane prepolymer, polyethylene glycol is cross-linked through chemical bonds, the tensile strength and the elongation at break of the phase change material are improved, and the problem that the phase change material is prone to leakage in the phase change process is solved; besides, borate bonds belong to associated dynamic covalent bonds and can keep the crosslinking density of the material unchanged when ester exchange occurs under thermal stimulation, so that the thermal stability of the material is relatively good; the solid-solid phase change material disclosed by the invention is excellent in mechanical property, has a relatively high enthalpy value, can be reprocessed, and has an application prospect in the fields of thermal management, energy storage, infrared stealth and the like.

The invention discloses a multi-shell photo-thermal phase change microcapsule and a preparation method thereof, the multi-shell photo-thermal phase change microcapsule comprises a capsule wall and a capsule core, the capsule core is an organic phase change material, the capsule wall comprises a titanium dioxide layer, a graphene layer and a polydopamine layer, the graphene layer is located outside the titanium dioxide layer, and the polydopamine layer is located outside the graphene layer. The multi-shell photo-thermal phase change microcapsule disclosed by the invention can realize full-wave band capture, and is high in photo-thermal conversion efficiency and good in shell stability.

The invention discloses a glass bottle outer side paint spraying production device, and relates to the technical field of glass bottle machining, the glass bottle outer side paint spraying production device comprises a paint spraying machine box, a conveying assembly and a glass bottle fixing assembly.According to the glass bottle outer side paint spraying production device, through a flexible clamping structure formed by cooperation of a phase-change material and an air bag, self-adaption and lossless sealing of different bottle openings are achieved, and paint spraying vibration is effectively prevented; a supporting mechanism driven by a shape memory alloy in the bottle is combined, a temperature control rod is heated to trigger alloy phase change, a supporting strip is pushed to be evenly opened along a T-shaped sliding groove, stable inner supporting force is provided, rotating eccentricity is restrained, meanwhile, the temperature control rod transmits heat into the bottle through a heat conduction rod, the temperature of the bottle body is increased, paint leveling is promoted, the orange peel and sagging defects are reduced, and the paint spraying effect is improved. And a closed environment formed by sealed clamping further retains heat, paint film pre-drying is assisted, paint spraying uniformity, adhesive force and production efficiency are remarkably improved, and the device is suitable for automatic coating of high-precision glass bottles.

The invention provides a storage system for immunofluorescence slide glass and an intelligent temperature and humidity coupling control method thereof. The system comprises a closed sample cabin, a controller, a passive buffer layer and other structures, and the temperature and humidity in the cabin can be stably controlled in a dynamic environment. The temperature and humidity in the cabin and the temperature of the key cold surface are monitored in real time through the sensing unit, the local dew point is calculated, and temperature and humidity control is executed. And the controller executes a layered gradient coupling control algorithm according to the dynamic dew point safety margin to ensure accurate control of temperature and humidity. The passive buffer layer is of a composite structure of a phase change material and a moisture absorption material, and the temperature and humidity are adjusted through solid-liquid phase change and molecular adsorption. The system can effectively improve the storage stability and safety of the immunofluorescence slide, and is suitable for sample storage management in industries such as life science and biological pharmacy.

The invention discloses a thermal insulation layer thickness determination method and system based on a phase change material. The method comprises the following steps: obtaining thermophysical parameters of a phase change material, and determining an applicable phase change material type in combination with temperature change characteristics of an application environment; after the phase-change material is applied, environment temperature data are collected, day and night temperature difference, seasonal change and sudden temperature fluctuation conditions are analyzed, and the heat adjusting requirements of the phase-change material in different time periods are calculated; and calculating the required thickness of the phase-change material according to the condition that the phase-change material is positioned on the outer layer or the inner layer of the thermal insulation layer on the basis of the calculated heat adjustment requirement, and performing optimization in combination with heat balance analysis. According to the invention, scientific calculation of the thickness of the phase change material is realized, so that the phase change material can provide effective heat storage and release under different environmental conditions, the problem of excessive use of the material or insufficient thermal insulation performance is avoided, and the thermal stability and energy-saving efficiency of the thermal insulation layer are improved.

The invention discloses an intelligent concrete composite material and a preparation method thereof. The material is formed by compounding a base material, a microencapsulated phase change material, a self-repairing agent and reinforced fibers. The microencapsulated phase-change material is of a core-shell structure, the core of the microencapsulated phase-change material is an organic phase-change substance, and the shell of the microencapsulated phase-change material is a polymer wall material; the self-repairing agent is a two-component microcapsule system containing a healing agent and a catalyst. When the building material is damaged by external force to generate microcracks, the stress at the tip of the cracks can enable the self-repairing microcapsules to be broken, the released healing agent is polymerized under the action of the catalyst, and self-repairing of the cracks is achieved. Meanwhile, the phase change material in the material can absorb or release a large amount of heat through phase transition, the internal temperature of a building is effectively adjusted, and energy consumption is reduced. The preparation process is simple, the cost is low, and the obtained material is excellent in comprehensive performance and has a wide application prospect.

The invention discloses a thermal management control method and system for a lithium ion battery pack, and relates to the field of thermal management control, and the method comprises the steps: obtaining a heat production limit value of the lithium ion battery pack under the condition of a configuration combination scheme; simulating a reaction state when the lithium ion battery pack is subjected to thermal runaway, and evaluating the heat burst and combustion speed of the lithium ion battery pack in combination with a temperature change curve in the thermal runaway process; screening out an optimal arrangement mode of the lithium ion battery pack, and establishing test sample points taking the number of cooling channels and the thickness of the phase change material as design quantities; simulating the heat absorption process of the lithium ion battery pack in the optimal arrangement mode, and obtaining the optimal number of cooling channels and the thickness of a phase change material in a target range according to a simulation result; and establishing a target optimization model relationship according to the optimal number of cooling channels, adjusting the structure of the liquid cooling plate, and optimizing the thermal management process of the lithium ion battery pack. According to the invention, the battery pack can be kept in a safe temperature range in the rapid charging and discharging process.

The invention belongs to the field of phase change heat storage, and discloses a phase change heat exchange fin parameter optimization method and a related device.According to the method, a three-dimensional parameterized model of a tree-shaped fractal fin containing the length ratio, the width fractal dimension and the fin number is established, representative parameter sample points are efficiently generated through Box-Behnken experimental design, and the representative parameter sample points are optimized; and a liquid phase rate and a total heat storage capacity response value are obtained by combining numerical simulation of phase change heat transfer, and multi-target parameter global optimization is realized based on a second-order polynomial regression model. By the adoption of the method, optimization efficiency and precision are remarkably improved, on the premise that a large number of repeated experiments or simulations are not needed, the optimal fin structure parameters capable of cooperatively strengthening heat conduction, promoting melting of the phase-change materials and maximizing the heat storage capacity are rapidly obtained, and a reliable design basis is provided for engineering application of the fractal fin strengthening phase-change heat storage technology.

The invention relates to the technical field of marine ecological engineering, in particular to a marine coral reef ecological restoration method based on a foamed aluminum base material, which comprises the following steps: preparing a modified foamed aluminum main body structure, constructing a modified bioactive surface layer, filling a modified phase change material capsule, and putting a restoration unit. According to the invention, the foamed aluminum main body structure provides a stable three-dimensional through porous network, and a natural reef habitat environment is simulated; a hydroxyapatite coating or a polymer layer constructed on the surface of the coral bone-imitating material remarkably improves the coral larva attachment and colonization efficiency through coral bone-imitating inorganic components or specific polypeptides respectively; the phase-change material capsules filled inside buffer water temperature fluctuation through phase-change latent heat, a stable micro-thermal environment is provided for coral growth, the functions of all the components are complementary and synergistic, foamed aluminum provides a carrier for surface functionalization, the surface active layer optimizes a biological interface, the internal temperature adjusting unit guarantees ecological suitability, and an efficient repairing system is formed. The coral reef ecological restoration effect is obviously improved.

The invention provides a direct heating type reconfigurable intelligent metasurface based on a phase change material and a preparation method thereof, the metasurface is composed of a plurality of metasurface units arranged in an array mode, and each metasurface unit comprises a substrate, a first dielectric layer, a middle metal layer, a second dielectric layer and a phase change material layer which are sequentially arranged from bottom to top; the two sides of the phase change material layer are respectively provided with a metal patch of a metal radiation patch structure. A contact electrode is arranged in the substrate; the first dielectric layer and the second dielectric layer are insulating layers, a first vertical through hole and a second vertical through hole are further formed in the metasurface unit, the metal patch radiation structure and a contact electrode of the substrate form an electrical path flow through the first vertical through hole and the second vertical through hole, and the current flows through the phase change material layer to drive the phase change material to generate crystalline state / amorphous state conversion. And an equivalent conductive path, electromagnetic coupling strength or local impedance between the metal patch radiation structures is changed in different phase states.

According to the fault early warning system for the wind power booster station provided by the invention, the limitation of traditional single-point monitoring is broken through by fusing the infrared ultrasonic technology and the ultrahigh frequency technology through the non-contact sensor, so that the early fault detection rate is greatly improved; the composite heat dissipation system suppresses the temperature rise of a transformer hot spot based on a dynamic heat management mechanism of a phase change material and a heat pipe, and the energy-saving efficiency is improved; the edge calculation early warning center converts temperature, partial discharge, strain and other multi-source heterogeneous data into a unified health degree index through a weighted fusion algorithm, and in combination with an equipment topology correlation analysis model, the positioning accuracy of a fault source is greatly improved, and the early warning response time delay is greatly reduced.

The invention relates to a non-contact reconstruction and digital twinborn operation and maintenance method and system for a three-dimensional temperature field of a phase change material, and solves the problems that a conventional phase change energy storage system needs to be internally provided with sensors for monitoring, and an internal three-dimensional temperature field and a phase change fraction field are difficult to accurately obtain. The method comprises the following steps: synchronously acquiring data through a sensing array arranged outside a phase change material energy storage container, preprocessing the data, and resolving to obtain intermediate characteristic data; mapping the feature data to a space coordinate system of a three-dimensional geometric model for registration and fusion to form multi-source fusion feature data; carrying out inversion calculation by adopting a neural network model embedded with physical constraints to obtain an internal three-dimensional temperature field and a phase change fraction field; and finally, based on the digital twin platform, evaluating the performance, predicting the life and outputting a predictive maintenance scheme. The method has the following effects: arrangement of sensors in the phase change material energy storage container is avoided, two fields are accurately inverted by means of the physical constraint model, and the internal real state is accurately obtained.

The present disclosure relates to a connector having a cooling module, including a connector housing and a cooling module. An electric connecting device is disposed in the connector housing. The cooling module includes a phase change material unit capable of absorbing or releasing heat by means of phase change, and the phase change material unit is disposed in the connector housing. when the connector having the cooling module is in operation, the phase change material unit absorbs heat generated by the electrical connection device by means of phase change. After the connector having the cooling module stops operation, the phase change material unit releases heat by means of phase change.

The invention discloses a multifunctional aerogel composite coating, which is prepared from the following components: hydrophobic modified silica aerogel, nano hollow carbon spheres, a microcapsule phase change material, organic silicon modified acrylic emulsion, acrylic acid modified polyurethane emulsion, cerium-doped zinc oxide, P25 titanium dioxide, reduced graphene oxide and the like. The heat conductivity coefficient is 0.022 to 0.032 W / (m.K); the temperature is actively adjusted through the microcapsule phase change material, and the anti-condensation temperature difference is 9-18 DEG C; through synergistic photocatalysis of cerium-doped zinc oxide and P25, the visible light degradation rate is 85%-98%; through the cooperation of the organic silicon / polyurethane interpenetrating network resin and the graphene, the salt fog resistance of 1650-2100 hours is realized; the VOC content is 2.8-4.0 g / L, and the paint is suitable for the fields of industrial pipelines, storage tanks, building exterior walls and the like.

The invention relates to the field of solar heating, in particular to a solar heat exchange device which comprises a shell and a bottom plate, the shell and the bottom plate form a closed cavity, a heat absorption layer is arranged on the outer surface of the shell, a heat conduction pipe and a phase change energy storage material are arranged in the cavity, and the inlet end and the outlet end of the heat conduction pipe extend out of the side wall of the shell. The phase change energy storage material is arranged around the heat conduction pipe and fills the cavity, a thermal expansion layer is arranged on the inner surface of the bottom plate, and the thermal expansion layer is arranged at the bottom of the cavity. In the invention, the thermal expansion layer is located below the phase change energy storage material. When the temperature rises, the volume of the thermal expansion layer is increased and pushes the phase change material upwards, so that the liquid level of the phase change material is raised, and the phase change material can be in close contact with the top heat absorption layer continuously even in a liquid state. The problems of gaps and thermal resistance caused by volume shrinkage of the phase change material are effectively avoided, it is guaranteed that heat can be efficiently transmitted to the energy storage medium, and therefore the heat transfer efficiency of the solar heat exchange device is remarkably improved.

The invention discloses a surface scraping type energy storage heat exchanger and a working method thereof, and relates to the technical field of energy accumulators, the surface scraping type energy storage heat exchanger comprises a heat exchanger body and a heat exchanger support, and the heat exchanger body comprises a heat exchanger outer shell, a heat exchanger inner shell, a heat production device, a stirring device, a surface scraping device, a pressurizing device and a protective net; a heat exchange sealed space is formed between the heat exchanger outer shell and the heat exchanger inner shell, a heat transfer working medium inlet and a heat transfer working medium outlet are formed in the heat exchanger outer shell, and a heat conduction medium and a phase change material are contained in the heat exchanger inner shell. The pressurizing device is used for pressing the phase-change material in the solid phase, and the surface scraping device is used for scraping the phase-change material which is attached to the inner wall of the heat exchanger inner shell and becomes the solid phase. The heat transfer efficiency during heat absorption and heat release can be improved, the energy storage efficiency is improved, and the actual use requirement that a heat source is a solid heat flow boundary with a fixed heat load and a fluid temperature boundary with a fixed temperature can be met.

The invention provides a shell-and-tube phase change heat storage system for a nuclear reactor containment and a nuclear accident heat energy management method, and belongs to the technical field of nuclear safety engineering and heat energy storage. The problems that an existing shell-and-tube heat reservoir is designed for industrial waste heat recovery and is not suitable for nuclear accidents, and the internal space structure of a containment is complex and limited are solved. The heat storage units are distributed in parallel, and each heat storage unit comprises a shell and a plurality of heat exchange tube bundles arranged in the shell; the heat storage unit has an interchangeable heat storage medium arrangement mode which comprises the first mode that the space in the heat exchange tube bundle is filled with a phase change material, and accident steam flows through a shell side channel between the shell and the heat exchange tube bundle; in the second mode, the shell side space between the shell and the heat exchange tube bundle is filled with the phase change material, and accident steam flows through an in-tube channel of the heat exchange tube bundle; and the accident steam passively flows through the channel which is not filled with the phase change material under the driving of the pressure difference. The method is used in the phase-change heat storage field.

The invention discloses a phase change material used in a heat insulation system, and a preparation method and application thereof. The phase change material is prepared from the following raw material components in parts by weight: 30-70 parts of dynamic crosslinking vitrimer resin; 20 to 60 parts of a porous skeleton supported phase change material; 1 to 15 parts of a temperature-sensitive self-foaming component; and 0.5 to 10 parts of a cascade response intelligent microcapsule. Through the synergistic effect of the components, the obtained composite material not only has the heat management performance of high heat conductivity, high latent heat, wide temperature range and long cycle life, but also has the passive protection capability of forming a heat insulation barrier by in-situ foaming when encountering high temperature, and the active safety capability of performing millisecond-level active removal when encountering electric arcs; meanwhile, based on the vitrimer matrix, the material also has the characteristics of being repairable and recoverable. The method is suitable for the fields of new energy automobiles, electrochemical energy storage, high-end electronic equipment and the like.

The invention relates to the technical field of building materials, and provides high-crack-resistance concrete based on sheath temperature shrinkage-core material phase change composite fibers and a preparation method of the high-crack-resistance concrete. The composite fiber is of a core-shell structure, and a core material is formed by loading an organic or inorganic phase change material on a porous metal fiber; the material of the sheath layer comprises one or more of polyester, polypropylene, polyurethane and high-density polyethylene; and the sheath layer is thermally shrunk through thermal treatment and coats the core material. According to the concrete disclosed by the invention, by introducing the sheath temperature shrinkage-core material phase change composite fiber, not only is a temperature field actively regulated and controlled by utilizing phase change latent heat, but also beneficial pre-compressive stress is introduced into the concrete through the temperature shrinkage effect of the fiber sheath; therefore, the crack resistance of the concrete is synergistically improved from multiple dimensions of stress source control, concrete inner surface temperature difference reduction and matrix enhancement, and it is guaranteed that the mechanical property of the concrete is not remarkably reduced due to introduction of the PCM.

The invention discloses a floor heating structure with a phase change material layer and a preparation method of the floor heating structure, and belongs to a floor heating structure, the floor heating structure comprises a base material layer, the phase change material layer, an auxiliary heat conduction layer and a floor surface layer from bottom to top in sequence; a metal heat-conducting net is embedded into the lower part of the base material layer; the phase change material layer comprises the following components in percentage by weight: 53%-58% of methyl laurate, 30%-35% of n-decanol, 5%-8% of nano aluminum oxide, 4%-6% of polyvinyl alcohol and 0.5%-1.5% of carboxymethyl cellulose. Solid-liquid phase change is carried out through the phase change material layer, redundant heat is absorbed, latent heat is released when a heat source is shut down, and therefore frequent starting and stopping of the heat source are reduced, and energy consumption is reduced. According to the multi-layer heat conduction design, through collaborative optimization of the metal heat conduction net and the auxiliary heat conduction layer, the heat efficiency of the floor heating structure is further improved, the heat response time is shortened, the latent heat characteristic of the phase change material is utilized, the heat buffering effect can be achieved in the floor, the heating temperature fluctuation range is reduced, and the heating comfort is improved.

The invention discloses a solid electrolyte composite material, a solid electrolyte membrane and an all-solid-state battery. The porous material and the phase change material are added into the solid electrolyte composite material provided by the invention. The porous material can be used as a carrier to store the phase change material, and a conductive ion network is constructed in gaps of the solid electrolyte membrane after the phase change material is released, so that the gaps of the solid electrolyte membrane can be filled, the density can be improved, the ionic conductivity of the solid electrolyte membrane can be increased, and the toughness of the solid electrolyte membrane can also be improved. The porous material also has large Young modulus, so that the growth of lithium dendrites can be effectively prevented; and the porous material also has a certain effect of adsorbing water and gas, so that the corrosion of sulfur-containing gas generated by moisture and side reaction on the copper current collector can be reduced. Finally, the solid electrolyte composite material provided by the invention can form a solid electrolyte membrane with high density and high ionic conductivity, the electrochemical performance of the sulfide all-solid-state battery is improved, and the risk of short circuit of the battery is reduced.

The invention discloses mint cool cloud velvet and a preparation method thereof, and relates to the technical field of cloud velvet. Silicon dioxide loaded with a composite cool feeling agent is used as cool feeling particles, and the cool feeling particles and PET slices are subjected to melt blending to prepare cool feeling master batches; the silane coupling agent modified jade powder and the cool master batch are added into the PET fiber to form a two-stage cool enhancing effect. PET hollow spinning is adopted to form a hollow structure, and a phase-change material is poured into the hollow structure for hot-pressing fusion sealing. The solid-liquid phase change mechanism of the selected phase change material enables the prepared cloud velvet to trigger heat absorption at a slightly high temperature in a comfortable area of a human body, so that the effect of modifying a tone to cool and the effect of staggering are achieved, and the cool feeling persistence is realized. In the fiber forming process, an all-dimensional annular high-speed strong cold air blowing technology is adopted, a spinning melt is instantly and rapidly cooled with extremely small errors, a unique crystalline state, different from that of other polyester fibers, of cloud wool is caused, and the effect of combining light weight and fluffiness is achieved. The cloud velvet prepared by the invention has the effects of long-acting cool feeling and fluffiness.

A cooler includes a peripheral wall forming a chamber, wherein the chamber is configured to maintain foodstuff in a temperature controlled environment. The cooler can be removably inserted or integrated into the trunk, front trunk or frunk, or side compartment of a vehicle. The cooler optionally includes a partition that subdivides the chamber into a first sub chamber and a second sub chamber. The cooler optionally includes a cooling system that charges a phase change material in the peripheral wall of the cooler.

The invention relates to a thermal buffer liquid cooling soaking device with a multi-phase change system and a preparation method of the thermal buffer liquid cooling soaking device. The thermal buffer liquid cooling soaking device comprises a liquid cooling plate and a fin runner integrated soaking plate used for making contact with a heat source. A fin flow channel is arranged on the outer side of the fin flow channel integrated vapor chamber, a fin hollow structure is arranged in the fin flow channel, and the fin hollow structure is filled with a phase change material with the phase change temperature of 100-120 DEG C; the liquid cooling plate covers the outer side of the fin flow channel integrated vapor chamber and forms a cooling liquid flow channel for cooling liquid to flow together with the fin flow channel; when the heating power of the heat source is small, sensible heat of the phase-change material absorbs part of heat, the cooling liquid takes away the heat and waste heat which cannot be absorbed by the phase-change material in time, and the temperature of the heat source is kept stable; when the heating power of the heat source is large, the phase change material begins to generate phase change, a large amount of latent heat is absorbed in the process, a thermal fusing effect is formed in the temperature range of 100-120 DEG C to play a thermal buffering role, and the power device can stably run in an overload mode within a period of time.

The invention discloses a reconfigurable intelligent metasurface device with switchable transmission and reflection polarization conversion based on deep learning and a design method, and belongs to the technical field of multifunctional metasurface devices and computers. The device comprises a top metal resonator, a middle dielectric layer and a bottom functional layer containing a vanadium dioxide phase change material. The phase state of VO2 is changed through external excitation, dynamic switching of the device between a transmission polarization conversion working mode and a reflection polarization conversion working mode can be achieved, and the problem that an existing device is single in function is solved. The design method comprises the steps that a forward prediction network embedded with physical mechanism constraints is constructed, a loss function of the forward prediction network comprises data loss and physical loss based on a polarization conversion rate physical formula, and the physical consistency of prediction is improved; and constructing a reverse design network based on bidirectional LSTM and CBAM attention mechanisms, and rapidly solving device structure parameters according to the target spectrum. According to the invention, full-space multifunctional regulation and control of the device are realized, and the design efficiency and reliability are remarkably improved.

The invention relates to the technical field of personal temperature control supplies, and discloses an intelligent heat regulation and control system and method for outdoor mobile equipment, and the system comprises a data collection module, an intelligent decision module and a collaborative execution module. The core of the method lies in two switchable control modes: when it is judged that the temperature is not uniform, the system enters an active circulation and balance mode, a control signal synchronous with the breathing frequency of a user is generated through a biological rhythm coupled self-adaptive peristaltic wave control algorithm, an exciter is driven to directionally transport a liquid phase change material in a wavy pulse mode, and the liquid phase change material is continuously conveyed. Heat redistribution is realized; and when the temperature is judged to be balanced, switching to a partition curing and heat locking mode, stopping transportation and inducing part of the phase change material to be cured at a specific position to form a heat insulation barrier with high heat resistance so as to lock core heat with low energy consumption. According to the invention, through active redistribution and partition solidification locking of heat, the personalized comfortable experience and the system cruising ability are significantly improved.

The application relates to the technical field of primary and secondary fusion complete ring network boxes, in particular to a high-reliability primary and secondary fusion complete ring network box, which comprises a box body, a ring network cabinet installed in the box body and a plurality of ventilation openings arranged around the box body. The primary and secondary fusion complete ring network box can utilize the phase-change material filled in the heat preservation box to absorb the external radiant heat and the residual heat of the equipment in the box during the day and stably store the heat, and the heat is conducted through the heat-conducting copper plates in the heat increasing and dew removing assembly at night, is then directionally transmitted to the inner wall of the box through a plurality of heat dissipation copper sheets, and the first temperature insulation cover wraps the rest of the side surfaces of the heat dissipation copper sheets, so that the heat loss to the air in the box or the outside of the box is prevented, the heat is forced to act on the inner wall, the temperature of the inner wall is prevented from being reduced below the dew point of the air, dew is prevented from being formed on the surfaces of the secondary elements and cable joints, hidden dangers such as the decrease of insulation performance and the corrosion of elements are effectively avoided, and the overall operation reliability is ensured.