809 results about "Contact heat" patented technology

The invention discloses a high-temperature surface contact thermal resistance elimination method based on double thermocouple compensation, and belongs to the technical field of material thermal property characterization and testing. The method comprises the following steps: synchronously acquiring double-thermocouple temperature, and obtaining a temperature difference signal through filtering calibration and environment correction; calculating the real-time heat flux density according to the corrected temperature difference, the Seebeck coefficient and the dynamic correction factor; establishing a nonlinear dynamic coupling model containing contact thermal resistance parameters, and performing temperature interval division; identifying a contact thermal resistance parameter on line by adopting a self-adaptive recursive least square algorithm, and generating a dynamic thermal resistance compensation value; and applying the compensation value to a double-thermocouple signal according to the weight, and outputting accurate high-temperature surface temperature. According to the method, data acquisition and preprocessing, dynamic heat flow correction, nonlinear segmented modeling, self-adaptive online identification and refined compensation output strategies are adopted, the influence of high-temperature surface contact thermal resistance can be effectively eliminated, and the accuracy and reliability of temperature measurement in the high-temperature environment are remarkably improved.

The invention discloses a self-correction optimization method and system for heat transfer boundary conditions of a water jacket heater, and particularly relates to the technical field of condition optimization control. The method comprises the following steps: constructing a thermal fatigue deformation trend estimation model by collecting a furnace wall surface temperature sequence, furnace wall surface heat flux distribution information and a furnace wall thermal stress response curve of a furnace body structure component, and generating a geometric parameter drift vector; performing structure equivalent mapping analysis on the geometric parameter drift vector, and extracting contact thermal resistance change information; performing furnace wall heat flow field reconstruction on the geometric parameter drift vector to obtain a dynamic correction vector; and the contact thermal resistance change information and the heat flow correction vector are comprehensively analyzed, a time-varying boundary condition inversion model is constructed, and a multi-parameter coupling boundary correction set is output and used for updating the boundary conditions in the water jacket heating furnace heat transfer simulation model, so that identification and self-adaptive correction of the boundary conditions are realized, and the heat transfer control precision and the heat efficiency are improved.

Disclosed in the present invention is a heat dissipation structure integrating a heat dissipation plate and a phase change heat transfer device, comprising a heat dissipation plate and a vapor chamber. The heat dissipation plate is provided with a flow channel allowing for flowing of a dielectric material, an inlet allowing for flowing of the dielectric material into the flow channel, and an outlet allowing for flowing of the dielectric material from the flow channel. In addition, the upper end surface of the heat dissipation plate is further provided with an opening, and the vapor chamber is blocked on the opening in the upper end surface of the heat dissipation plate to directly perform contact heat transfer with the dielectric material in the heat dissipation plate. The present invention can efficiently solve the problem of insufficient heat exchange efficiency between the vapor chamber and a cooling medium material during composite heat dissipation of the vapor chamber and the heat dissipation plate, and effectively improve the cooling efficiency of the composite heat dissipation mode of the vapor chamber and the heat dissipation plate. Since the vapor chamber has high structural requirements, there is no need to make significant modifications to components, and in the present application, there is no need to change the internal structure of the vapor chamber, thereby making the production and processing easier to implement.

The invention discloses a heat dissipation control method and device for a single-phase immersed liquid cooling charging pile and a medium, and relates to the technical field of battery thermal management, and the method comprises the steps: carrying out the high-precision scanning and dynamic feature extraction of a built-in fiber grating array of a cold plate according to a partition flow control signal, and obtaining a temperature field matrix and a dynamic thermal feature set; performing multi-dimensional fusion analysis and electrochemical coupling analysis on the temperature field matrix and the dynamic thermal feature set to generate a thermal coupling parameter set; performing real-time risk quantitative evaluation and risk topological mapping on the thermal coupling parameter set, and outputting a risk topological data set; and performing cooling intensity dynamic modulation according to the risk topology data set, and obtaining a partition flow redistribution instruction. According to the invention, fine monitoring of the cold plate-battery interface contact thermal resistance is realized through a high-precision pressure field reconstruction technology, the accuracy and reliability of pressure distribution detection are significantly improved, and the local overheating risk caused by an assembly gap is effectively eliminated.

The invention discloses a radiator thermal efficiency full-detection test system, which belongs to the technical field of radiators and is provided with a heat source simulation module, an environment simulation module, an energy efficiency circulation module, a measurement and control analysis module and a digital twin module. The heat source simulation module is responsible for accurately simulating the heating behavior of an electronic device and achieving dynamic compensation of heat radiator contact thermal resistance, the environment simulation module is used for constructing a stable temperature and humidity environment and isolating external interference, and the energy efficiency circulation module is used for multi-energy collaborative supply and energy gradient utilization. The energy efficiency circulation module provides cold and hot medium water for the heat source simulation module and conveys constant-temperature cooling water to the environment simulation module, and the valve opening degree is adjusted by the measurement and control analysis module. The measurement and control analysis module undertakes full-process data acquisition and performance analysis tasks, and the digital twinning module realizes virtual-real interactive simulation and artificial intelligence optimization; the radiator thermal efficiency full-detection test system solves the technical problem of how to improve the detection efficiency of the radiator thermal efficiency.

A packaging system for a hot water heater includes an outer box, a top insert, an offset filler, a base insert, and one or more side panels. The top insert contacts a top surface of the hot water heater and a top inside surface of outer box. The offset filler is coupled to the top insert and is sandwiched between the hot water heater and the outer box. The base insert contacts the bottom surface of the hot water heater and a bottom inside surface of the outer box. The base insert includes raised perimeter structures that form a shape that matches a shape of the bottom surface of the hot water heater. Each side panel includes a raised pattern.

The invention discloses a high-heat-flux heat dissipation system for an on-orbit computing power cluster, and belongs to the technical field of spacecraft heat control. The system is independent of a satellite conventional thermal control platform and is specially used for discharging waste heat of an AI calculation array. The system comprises a heat capture unit, a pumpless heat transfer unit and a foldable heat dissipation unit. The heat transmission unit comprises a micro-channel flexible pulsating heat pipe (such as a diamond film material), and the heat pipe spans a folding area and has the functions of structural connection and heat transmission, so that a thermal low-impedance independent channel relative to a satellite structure is formed. Through the design of removing a mechanical pump and removing a mechanical hinge, the problems of large weight, micro-vibration interference, high contact thermal resistance and the like of a heat dissipation system of the computing power satellite are solved, and preferential directional heat dissipation of high-flux heat is realized.

A combination heat dissipation structure includes a vapor chamber and at least one heat pipe. The vapor chamber defines an airtight chamber filled with a working fluid and provided with first and second wick structures. The vapor chamber further includes at least one through hole formed on its upper wall and communicable with the airtight chamber, and annular elements provided in the airtight chamber corresponding to the through hole to contact with the first and second wick structures. The heat pipe has an open end inserted into the airtight chamber to contact with the first wick structure, such that the heat pipe is axially supported and located by the annular elements. With these arrangements, a flow-back path between the vapor chamber and the heat pipe is largely shortened to avoid dry burning in the vapor chamber and upgrade the two-phase heat exchange efficiency of the vapor chamber.

The invention belongs to the technical field of solar photo-thermal power generation, and discloses a tower type solar power generation system based on lunar soil particle moving bed heat exchange, which utilizes local materials of lunar soil to prepare solid heat storage particles as a heat transfer and heat storage medium, greatly reduces the mass and volume of the system and the cost and risk of transporting materials from the earth, and improves the energy efficiency. The efficient particle moving bed heat exchanger combining the particle receiver and the heat collector utilizes direct efficient contact heat exchange between solid particles and between the particles and a heat exchange working medium, has the characteristics of high heat exchange efficiency, small heat loss and compact structure, and is particularly suitable for space vacuum and microgravity environments; it is ensured that heat is reliably and stably transmitted to the Brayton cycle power generation system from concentrated solar energy, and power is generated through the Brayton cycle power generation system.

A combination heat dissipation structure includes a vapor chamber and at least one heat pipe. The vapor chamber defines an airtight chamber filled with a working fluid and provided with first and second wick structures. The vapor chamber further includes at least one through hole formed on its upper wall and communicable with the airtight chamber, and annular elements provided in the airtight chamber corresponding to the through hole to contact with the first and second wick structures. The heat pipe has an open end inserted into the airtight chamber to contact with the first wick structure, such that the heat pipe is axially supported and located by the annular elements. With these arrangements, a flow-back path between the vapor chamber and the heat pipe is largely shortened to avoid dry burning in the vapor chamber and upgrade the two-phase heat exchange efficiency of the vapor chamber.

The invention relates to the technical field of temperature control, in particular to a multi-dimensional compensation ablation system temperature control system, method and device and a medium. The system calculates a medium texture index representing the structural change of the load medium by synchronously acquiring electrical parameters and ultrasonic image data; constructing an anti-interference control model comprising an extended state observer, and defining energy transmission loss caused by contact thermal resistance as an extended state variable; calculating an adaptive correction factor based on the texture index, dynamically correcting the state updating process of the observer to obtain an energy loss correction estimated value, and constructing a compensation control model to adjust the output power according to the energy loss correction estimated value; according to the invention, the technical problem of incomplete heating caused by false high temperature of the sensor and system misjudgment due to state deterioration of the contact interface is effectively solved; accurate reconstruction and closed-loop compensation of effective heat flow in a non-ideal contact environment are realized, sufficient energy penetration can still be maintained even if contact thermal resistance is sharply increased, and the integrity of an ablation area is guaranteed.

The invention discloses a thermal analysis method of a heterogeneous material combined component considering multi-scale contact thermal resistance, and belongs to the technical field of aero-engine thermal management. The method comprises the following steps: firstly, establishing a period calculation model of a CMC outer ring and metal casing combined member, secondly, setting anisotropy of CMC heat conduction according to geometric profile change of a gas outer ring, and finally, introducing an empirical relation expression of contact thermal resistance by setting equivalent heat conduction of a contact area between the CMC outer ring and the metal casing in CFD calculation. The difference between the two is explored by comparing the temperature field results of the combined component with or without the contact thermal resistance, and the influence of the contact thermal resistance on flowing heat exchange is explored. According to the method, by considering the multi-scale contact thermal resistance between different materials, the influence of the contact thermal resistance on the turbine flow heat exchange result is researched, meanwhile, the temperature field of the turbine component in CFD calculation is corrected, and a guidance basis is provided for improving the prediction precision of the temperature result of the gas turbine component under the complex gas thermal load.

The utility model relates to a horizontal fluidized bed drying machine for xanthate production, and belongs to the technical field of drying machines, the horizontal fluidized bed drying machine comprises a drying machine main body, an exhaust pipe is fixed on the upper surface of the drying machine main body, and an induced draft fan is fixed on one side, far away from the drying machine main body, of the exhaust pipe. According to the horizontal fluidized bed drying machine for xanthate production, materials are fed into the drying machine body from the feeding hopper, hot air is fed into the drying machine body through the air feeder, the materials are subjected to fluidized drying in the hot air, the dried air is exhausted through the exhaust pipe, the induced draft fan and the heat exchanger conduct heat recovery, and the motor drives the worm, the worm gear, the two-way screw, the toothed plate, the gear and the threaded rod to rotate. The movable block, the connecting rod, the rotating rod and the shifting plate move left and right, materials are evenly distributed on the net plate, it is ensured that the materials make full contact with hot air, the drying effect is improved, it is ensured that the materials are evenly distributed and make full contact with the hot air, the drying efficiency is improved, energy consumption is reduced, the product quality is ensured, and the market competitiveness is improved.

The invention aims to provide the system and the method for precisely measuring the heat conduction performance of the vapor chamber, which can eliminate errors caused by contact thermal resistance by utilizing the vapor chamber, and is high in spatial resolution and non-destructive in test. The uniform temperature plate heat conduction performance precision measurement system comprises a temperature measurement module, the temperature measurement module comprises a heating module and a plurality of measurement modules, each measurement module comprises a thermocouple probe and a force adjusting mechanism which are connected, and each thermocouple probe comprises a T-shaped thermocouple, a positive electrode temperature measurement pressure head and a negative electrode temperature measurement pressure head. The positive temperature measuring pressure head and the negative temperature measuring pressure head are mutually independent and are arranged in a floating mode relative to the force adjusting mechanism, the positive temperature measuring pressure head is provided with a copper thermocouple wire connected to the positive electrode of the T-type thermocouple, and the negative temperature measuring pressure head is provided with a constantan thermocouple wire connected to the negative electrode of the T-type thermocouple. The copper thermocouple wire and the constantan thermocouple wire are short-circuited and form a thermocouple loop when being in contact with the vapor chamber at the same time; the method is realized based on the measurement system. The method is applied to the technical field of vapor chamber testing.

The invention discloses an axial magnetic flux motor based on half-cycle oil injection cooling and an oil injection cooling method thereof.The axial magnetic flux motor comprises motor shells, the two motor shells are symmetrically installed, the two stator assemblies are arranged in the two motor shells respectively, the rotor assembly is arranged between the two stator assemblies through an output shaft, and the rotor assembly is arranged between the two stator assemblies through an output shaft. The two stator assemblies are arranged on the two motor shells, the half-cycle oil injection cooling assemblies are arranged on the two motor shells and correspond to the upper half parts of the two stator assemblies, and the confluence oil outlet assemblies are arranged on the two motor shells and correspond to the bottoms of the two stator assemblies. The heat exchange efficiency is far higher than that of indirect cooling, and meanwhile, the two rows of half-cycle arc-shaped oil nozzles ensure that the cooling oil covers all winding coils, shunt cooling and auxiliary casing flow channel structures, the heat dissipation uniformity is improved, and the problem that the heat dissipation effect of the motor is poor is solved.

The invention provides a force thermal electric field coupling method based on an inclined crown spring connector, and belongs to the field of electric connector design and optimization analysis, and the method specifically comprises the following steps: S1, building a single-terminal parameterization CAE model of an inclined crown spring large-current connector, material attribute setting, grid division, contact pair definition, boundary condition and solver configuration are completed through an APDL language; s2, executing transient mechanical field simulation, and extracting normal contact force, geometric deformation and contact area of each contact at the moment when the pin is completely inserted; s3, based on the Hertz contact theory, calculating a contact resistance theoretical value according to the normal contact force of each contact, and deducing the contact conductivity and the contact heat conductivity; and S4, reconstructing a reed geometric model according to a mechanical field deformation result, and fitting the shape of the contact into an ellipse or a circle according to the contact area. The method is used for solving the problem that coupling simulation convergence is difficult due to a complex structure, and the multi-physics field coupling calculation difficulty is reduced.

The invention relates to the field of particle accelerators, in particular to an ultrahigh and extremely high vacuum acquisition system and method. The vacuum obtaining system comprises a vacuum obtaining device and a vacuum temperature control device, the vacuum obtaining device comprises a ceramic vacuum chamber, an interlayer vacuum chamber, a main pump chamber, a first vacuum pumping assembly and a second vacuum pumping assembly, the main vacuum chamber is formed in the ceramic vacuum chamber, and the ceramic vacuum chamber is arranged in the interlayer vacuum chamber; and an interlayer space is formed between the ceramic vacuum chamber and the interlayer vacuum chamber. The ceramic vacuum chamber is arranged in the interlayer vacuum chamber, the interlayer space is formed between the ceramic vacuum chamber and the interlayer vacuum chamber, and the interlayer vacuum chamber is heated through the heating element, so that the ceramic vacuum chamber is uniformly heated in a non-contact heat radiation uniform heating mode; the problem of thermal stress concentration caused by direct conduction heating of the ceramic vacuum chamber is thoroughly eliminated, leakage or fracture of the ceramic-metal joint caused by thermal stress is avoided, and the structural integrity of a heterogeneous material connecting area is ensured.

The invention relates to the technical field of non-contact heat exchange of computer cabinets, in particular to a high-performance computer two-phase cooling isolation heat exchange cabinet which comprises a cabinet unit, a corrugated bare wall, a medium switching system and a reciprocating driving mechanism. The medium switching system comprises a lower-layer driving cavity fixed to the bottom of the corrugated plate and an upper-layer follow-up cavity fixed to the top of the corrugated plate, the two ends of the straight-through heat conduction pipe are communicated with the two cavities respectively, a column block and a free supporting rod are arranged in a pipe opening in a sleeved mode, and the reciprocating driving mechanism drives the column block to move up and down in the straight-through heat conduction pipe. And a solid-liquid two-phase medium is driven to flow back and forth between the inner side groove and the outer side groove, so that heat exchange is realized. The device is combined with phase change material latent heat circulation and straight air duct design, full-closed, efficient and low-cost heat exchange is achieved through a low-power-consumption driving system, and the device has high reliability, environment friendliness and expandability.

The invention relates to a contact type heating high-temperature tensile test system suitable for plates in the technical field of material high-temperature mechanical property testing, and the system comprises a loading module which is used for being connected with a testing machine and cooperating with a clamping module to apply an acting force to a sample so as to realize a tensile process; a heating block of the heating module is controlled by an air cylinder with a free stroke to move so as to be tightly attached to the sample for heating, and a window for observing the sample is formed in the external heat preservation box; according to the device, a contact type heating mode is adopted to achieve heating of a sample piece, the heating speed is high, the sample is heated evenly, the sample can rotate by 90 degrees, heating and strain measurement are achieved respectively, laser temperature measurement and the heating rod are coupled through the temperature controller, accurate control over the temperature is achieved, and the device is simple in structure, convenient to operate and high in practicability. The high-temperature area and the normal-temperature area are separated by a thermal insulation material, and the high-temperature area adopts clearance fit to ensure sufficient thermal expansion space of the pin, so that high-temperature adhesion is prevented.

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 present invention provides a liquid-cooling heat dissipation apparatus for a power device, and an on-board charger. The liquid-cooling heat dissipation apparatus comprises a circuit board, a power device, and a heat dissipation assembly which are sequentially stacked. One side of the power device is connected to the circuit board by means of pins on the power device, and the other side of the power device is installed on a heat dissipation surface of the heat dissipation assembly. In the present invention, the power device is directly installed on the heat dissipation surface of the heat dissipation assembly, so that compared with the prior art, the present invention omits an intermediate heat transfer layer such as an aluminum substrate, reducing thermal contact resistance, thereby improving heat dissipation performance; additionally, the aluminum substrate is not used, so that no additional pressing strip is required to press the aluminum substrate, thereby reducing the complexity of installation, and reducing the installation space required for the power device.

The invention relates to a preparation method and application of a reaction type graphene reinforced spherical core-shell structure aluminum oxide-aluminum heat conduction interface material. The preparation method comprises the following steps: performing oxidation treatment on aluminum powder through an oxidizing agent to prepare a hydroxylated Al2O3 (at) Al core-shell structure spherical material, then performing covalent functional modification on the Al2O3 (at) Al core-shell structure spherical material and hydroxylated graphene by using a silane coupling agent, and grafting reactive acrylate functional groups. The thermal interface material is prepared by taking vinyl silicone oil and the like as a polymer matrix and compounding the polymer matrix with Al2O3 (at) Al and hydroxylated graphene filler. According to the thermal interface material, the dispersity of the filler in a silicone oil system is improved, agglomeration of the filler in a polymer matrix is reduced, the interface compatibility between the filler and silicon resin can be effectively improved, the flowing property of the thermal interface material is improved, meanwhile, the thermal interface material has a good heat conduction effect, and the contact thermal resistance is effectively reduced. The preparation method is simple, low in cost, high in repeatability, universal and suitable for large-scale industrial production, the thermal conductivity of the thermal interface material can be regulated and controlled to be 3.169-7.811 W.m <-1 >. K <-1 >, the interface thermal resistance can be regulated and controlled to be 0.0315-0.8792 K.cm < 2 >. W <-1 >, and the contact thermal resistance can be regulated and controlled to be 0.0129-0.3235 K.cm < 2 >. W <-1 >.

The invention discloses a CMC and high-temperature alloy contact thermal resistance estimation method based on multi-scale rough features, and belongs to the technical field of aero-engine thermal management. The method comprises the following steps: firstly, reconstructing a CMC microscopic surface topography through optical scanning, establishing a microscopic contact thermal resistance model, and extracting the association of the microscopic contact thermal resistance along with temperature and pressure; then, based on CMC mesoscopic weaving texture features, a mesoscopic contact thermal resistance model of the ceramic matrix composite and the high-temperature alloy is established, an empirical relation obtained by the microcosmic thermal resistance is embedded into the mesoscopic contact thermal resistance model, and a multi-scale analysis method is formed. According to the method, the change rule of the contact thermal resistance under different temperature and pressure conditions can be accurately predicted, and key support is provided for thermal matching design of heterogeneous materials of aero-engines.

The invention relates to the technical field of spacecraft thermal control, and discloses a self-adaptive thermal control system based on pump-driven two-phase flow and thermochromism cooperative regulation, and the system is dynamically coupled with a thermal switch and a thermochromism coating through a pump-driven two-phase flow loop to realize autonomous bidirectional regulation of a thermal environment in a spacecraft. When heat dissipation is needed in the cabin, the pump drives the two-phase flow to start, the temperature of the condenser rises to enable the bottom thermal switch to expand, the condensation plate is pushed to be in contact with the radiation heat dissipation plate to transfer heat, meanwhile, the thermochromic coating is heated to be in a high infrared emissivity state, and an active heat dissipation channel is constructed. And when heat dissipation is not needed, the temperature of the condenser is reduced, the thermal switch shrinks and resets, the condensation plate is separated from the radiation heat dissipation plate, the thermochromism coating recovers the low-emissivity state, and double blocking of physical isolation and radiation suppression of the heat dissipation channel is achieved. The contradiction between passive heat leakage and active power consumption of a traditional thermal control system can be solved, and the environmental adaptability and the energy utilization efficiency of a spacecraft thermal management system are improved.

The invention relates to the technical field of protectors, in particular to a power-off reset anti-pulse overcurrent and overheat protector and a manufacturing method thereof, and the protector comprises a PTC heating element which forms a hollow structure; the sensing assembly is arranged in the hollow structure; the first connecting plate is arranged at the top of the PTC heating element; the second connecting plate is arranged at the bottom of the PTC heating element; the faces, facing the hollow structure, of the first connecting plate and the second connecting plate provide installation positions for the induction assembly, the two opposite side edges of the first connecting plate are continuously bent and extend to the bottom of the PTC heating piece to form wrapping edges, and an insulating plate is arranged between the first connecting plate and the second connecting plate. The PTC heating element is used for providing an installation space, an additional installation support is not needed, redundant space between parts is greatly compressed, the PTC heating element forms a double conduction mechanism of air heat storage and contact heat compensation, and the reliability of circuit protection is improved.

The invention relates to the technical field of interface thermal resistance calculation, and discloses a method for measuring and calculating interface thermal resistance based on an infrared imaging technology, which comprises the following steps: fixing and aligning paired upper and lower test pieces to form a to-be-measured contact interface, respectively preheating to a preset initial temperature difference and stabilizing, and monitoring and recording temperature change and test piece thermophysical parameters; enabling the test piece to be in contact, starting infrared imaging equipment to record full-field transient temperature data in a temperature equalization process, and forming a three-dimensional data matrix; building a thermal resistance correlation model, constructing a heat conduction equation in combination with the parameters to solve a simulated temperature field, and inverting related heat conduction coefficients by using a conjugate gradient method; and calculating microscopic and total contact thermal resistance according to the inversion coefficient and the geometric parameters, and deducing macroscopic thermal resistance. According to the method, non-intrusive transient infrared temperature measurement is combined with a reverse heat transfer algorithm, so that the microscopic thermal resistance, the macroscopic thermal resistance and the total contact thermal resistance are accurately distinguished and quantified.

The invention provides a curing method of conductive silver paste and a preparation method of electrochromic glass, the curing method comprises the following steps: a device substrate coated with the conductive silver paste is used for carrying out contact heating on the other surface, opposite to the conductive silver paste, of the device substrate, and the contact heating process comprises the following steps: firstly, heating at a first temperature, and then heating at a second temperature; and then heating is conducted at a second temperature, the first temperature is lower than the second temperature, standing is conducted after contact type heating is finished, and the curing process is completed. According to the curing method provided by the invention, the heating mode of conductive silver paste curing is optimized, the combination of anions in the silver paste is better, lower resistance can be achieved, the conductivity is improved, the adhesive force of the silver paste on a film layer can be improved, and the service life of a device is prolonged.

The invention provides an aluminum alloy precision forging forming die multi-area independent temperature control system and method, the system comprises a forming die assembly, a force thermal decoupling support base, a fluid temperature control supply station and a main control unit, the forming die assembly comprises a plurality of heat conduction inserts separated by heat insulation isolation layers; a rigid bearing loop and a dynamic thermal control loop which are parallel to each other are integrated on the force thermal decoupling supporting base, the dynamic thermal control loop drives the high-thermal-conductivity telescopic thermal bridge and the interface flexible dielectric layer to ascend and descend through a displacement actuator, and in a non-forging state, the thermal bridge supports the heat conduction insert and maintains a safety gap with the rigid bearing stand column; in the forging impact stage, the heat conduction insert moves downwards to eliminate the safety gap, the rigid bearing stand column bears the forming load, the main control unit adjusts the output force of the actuator according to temperature feedback, and the contact thermal resistance is adjusted and controlled in real time by changing the interface contact pressure. The problem that a precise temperature control assembly is difficult to bear forging impact is solved, and quick and precise response of multi-area independent heat flow is achieved.

The utility model belongs to the technical field of unmanned aerial vehicles, in particular to a miniature reconnaissance unmanned aerial vehicle, which comprises an unmanned aerial vehicle body and a camera, the bottom of the unmanned aerial vehicle body is connected with a storage box, the bottom of the unmanned aerial vehicle body is provided with a connecting plate, the connecting plate is fixedly connected with a plurality of fins, and the fins are positioned in the storage box. A first motor is arranged in the storage box, and the output end of the first motor is connected with draft fan blades. The heat dissipation efficiency of the unmanned aerial vehicle can be improved by installing the fins and the draft fan blade clamps, firstly, the connecting plates and the fins are made of high-heat-conductivity materials, the connecting plates make contact with electronic elements generating heat on the unmanned aerial vehicle body, the heat can be transmitted to the fins through the connecting plates, the heat dissipation area is increased through the fins, and the heat dissipation efficiency of the unmanned aerial vehicle is improved. And then the first motor is started to drive the draft fan blades to rotate, the draft fan blades rotate to extract air around the fins, the extracted air flows through the fins to take away heat on the fins, and therefore the unmanned aerial vehicle is rapidly cooled.