199 results about "Thermal interference" patented technology

The invention relates to the technical field of electrical equipment monitoring, in particular to a power distribution equipment state intelligent diagnosis system and method, and the system comprises a current fluctuation detection module, a voltage stability evaluation module, a heat effect diffusion analysis module, a fault point positioning module and an equipment state evaluation module. According to the invention, through extracting current change characteristics of key nodes and judging continuity of fluctuation differences, rapid identification of current anomalies can be realized, a voltage distortion region and a distribution range thereof can be positioned in combination with phase deviation and symmetry change of voltage waveforms, and the current anomalies can be identified based on a temperature gradient path and jump point screening. A hot spot diffusion trend and a thermal disturbance boundary can be described, morphological analysis and coordinate labeling are performed on the basis of multiple fault areas, multi-point concurrent positioning is realized, association between thermal disturbance and connection defects is identified in combination with temperature difference and current path change characteristics, fault diffusion trends and state disturbance blocks can be accurately presented, and the accuracy of fault diagnosis is improved. And the power distribution state identification and intervention efficiency is improved.

The invention relates to a full-automatic injection molding optimization method, device and equipment based on digital twinning, and belongs to the technical field of intelligent manufacturing equipment. Inputting the sensor data into a digital twin model to construct equipment dynamic response simulation, and synchronously comparing the actual mode locking force with the offset of a preset pressure threshold; generating compensation data of mold locking pressure according to the offset, and dynamically correcting an acceleration curve of a servo motor in a glue injection stage on the basis of the displacement of a screw rod; in hot runner control, a thermal interference compensation coefficient is calculated according to a temperature difference value of adjacent temperature zones, and an output power gradient signal of each heating ring is adjusted; the corrected parameter information is transmitted to an equipment PLC through an industrial bus to execute control, and a compensation coefficient threshold value is iteratively updated according to a product weight fluctuation value in the next forming period; closed-loop data interaction of an equipment control system is achieved, and the injection molding process is optimized.

The invention relates to the technical field of power distribution, and discloses a power distribution method and system for a liquid cooling string PCS energy storage converter, and the method comprises the steps: constructing a multi-dimensional state matrix of each energy storage unit in the liquid cooling string PCS energy storage converter; establishing a thermal coupling model among the energy storage units according to the temperature parameters in the multi-dimensional state matrix, and constructing a temperature constraint projection mapping function; constructing a power optimization objective function considering the thermal coupling effect; calculating temperature change caused by disturbance through a thermal coupling model to obtain a temperature sensitive gradient vector; the power distribution weight of each energy storage unit is dynamically adjusted, and when the iteration change value of the power optimization objective function is smaller than a preset threshold value and the thermal coupling model is stable, a target power distribution strategy is output, collaborative optimization of power distribution and temperature control is achieved, the problem of thermal interference between the energy storage units is effectively solved, and the reliability of power distribution and temperature control is improved. And the overall operation efficiency of the liquid cooling string PCS energy storage converter is obviously improved.

The invention provides a zone-controlled intelligent charging pile double-cooling heat dissipation system and a control method, and belongs to the technical field of charging pile heat dissipation. Comprising an area division acquisition module used for monitoring the temperature generated by a function module in each thermal control area and the temperature generated by heat dissipation equipment in each thermal control area in real time and constructing a first data set and a second data set, and an early warning analysis module used for constructing an in-pile thermal risk coefficient Rheat and an environment thermal interference coefficient Renv, and the evaluation optimization module is used for constructing a comprehensive temperature control adjustment coefficient Rtotal. According to the system, the heating temperature of the function module is accurately monitored in a zoning manner, heat dissipation is quickly performed on the function module, the temperature change of the function module can be predicted in advance, the power consumption of equipment is reduced, and the heat dissipation efficiency of the equipment is improved.

The invention relates to the technical field of automobile cup holder temperature control methods, and discloses an automobile cup holder temperature regulation control method based on a microcontroller. According to the method, real-time temperature data and environment parameters of a target container are collected, and an initial temperature parameter set containing a container surface temperature distribution curve and an environment heat exchange coefficient sequence is generated; then, establishing a first adjusting model containing a mapping relation between surface temperature change and refrigeration power according to the container surface temperature distribution curve, and establishing a second adjusting model containing environment heat interference and a heating power compensation rule according to the environment heat exchange coefficient sequence; during cup stand temperature control, based on real-time temperature difference fluctuation and container material heat conduction characteristic data, a target model is activated to generate a dynamic power instruction, finally, the instruction is input into a semiconductor temperature control unit of the cup stand, and the current gradient of a refrigeration sheet or the voltage distribution of a heating film is adjusted. The temperature of the automobile cup holder can be accurately and intelligently adjusted, and the user experience and the comfort level of an automobile cabin are improved.

The invention relates to the technical field of process optimization, in particular to a collaborative optimization analysis method for multi-station tower drum welding. In order to solve the problem that cooperative control of tower drum multi-station welding is difficult, firstly, multi-mode sensing data of welding seam vision, arc sensing, thermal field distribution and welding voiceprint are loaded, a fusion evaluation model is constructed to obtain a welding seam deviation value and a sensor confidence score, and the health state of a sensor is judged according to a threshold value; and a corresponding fault-tolerant reconstruction control mode is triggered to obtain welding tracking control parameters, then a multi-station welding heat source model is loaded, thermal interference is decoupled in combination with the control parameters and thermal field data, multiple stations are cooperatively regulated and controlled, a cooperative control instruction is output and executed, and welding process optimization is achieved.

The invention provides a drain valve leakage online monitoring method and system based on infrared thermal imaging and deep learning. Comprising the following steps: step 1, collecting a thermal image sequence of a drain valve area in real time through an infrared thermal imager, and simultaneously obtaining a drain valve start-stop signal; step 2, based on a steam trap start-stop signal, synchronously segmenting the thermal image sequence into a working state sequence and a shutdown state sequence according to a working period, and performing dynamic background difference processing on each frame of image to eliminate thermal inertia interference of equipment; 3, calculating a temperature gradient map of each frame of image, generating a temperature gradient mask, and highlighting temperature mutation characteristics of the leakage area; 4, constructing a two-channel time sequence compression network model; 5, evaluating the environmental interference degree based on the dynamic interference index, and dynamically adjusting a leakage judgment threshold value; and step 6, in combination with the leakage region area change rate, the temperature gradient change rate and the sensor data trend, carrying out graded judgment on leakage events, and distinguishing real leakage from background thermal interference through texture feature matching.

The invention discloses a synchronous temperature control method for co-extrusion molding of a multilayer polymer film, and relates to the technical field of high polymer material processing, and the method comprises the following steps: setting a target temperature interval of each polymer layer of the multilayer polymer film, and according to the melting characteristics, heat sensitivity and interface bonding requirements of each layer of material, setting a target temperature interval of each polymer layer of the multilayer polymer film; respectively determining an extrusion temperature set value and an allowable fluctuation range; through layered independent temperature control and preheating matching, thermal behavior synchronization of multiple polymer melts is achieved, and the interface bonding stability is improved; through a die head heat insulation and buffer structure, interlayer heat interference is effectively shielded, and the integrity of a functional layer is guaranteed; through the intelligent closed-loop temperature control system, the state of each temperature control area is predicted and adjusted in real time, and self-adaptive optimization of thermal control is achieved. And the co-extrusion quality, the consistency and the production intelligent level of the multi-layer film are integrally improved.

The invention discloses a laser pipe cutting machine with a cooling system, which is characterized in that the outer side of a laser cutting head is sleeved with a heat dissipation suite, an inner water cavity and an outer water cavity which are communicated with each other are arranged in the heat dissipation suite, cold air pipelines are arranged in the two water cavities, and the bottom of the heat dissipation suite is connected with an air blowing box; the bottom of the air blowing box is connected with a lantern ring arranged on the lower portion of the laser cutting head in a sleeving mode, and a cold water cavity is formed in the lantern ring. A fixed seat is mounted on the outer side wall of the front chuck, and a water bag for cooling the pipe is arranged on the inner ring of the fixed seat; cold air downwards blows away hot air generated by cutting after cooling the water body, and heat interference is reduced; the outer water cavity accurately controls the water flow direction through the inflation amount of the air bag, closed circulation of extrusion-cooling-backflow-mixing is formed, and therefore the cutting head is always kept in the low-temperature working state, the service life of equipment is prolonged, and the cutting stability is improved. The problems of notch hardening and oxidation of stainless steel, aluminum alloy and other metal pipes are effectively reduced, a heat affected zone is reduced, and the notch quality is improved.

The invention relates to the technical field of real-time monitoring and early warning, in particular to a real-time monitoring and early warning method and system for house safety, and the method comprises the following steps: obtaining a dominant frequency amplitude and an inclination change rate, screening abnormal nodes through combining a distance, correlating temperature to eliminate thermal interference, analyzing a phase and energy to recognize an abnormal region, and evaluating aging influence through combining harmonic waves and stress. And analyzing the conduction relationship to generate early warning information. According to the method, the abnormal recognition accuracy is improved through linkage judgment of the vibration dominant frequency and the inclination change rate, space aggregation screening is achieved in combination with the node spacing, thermal disturbance misjudgment is effectively eliminated through dominant frequency offset and temperature gradient joint analysis, and the regional continuous abnormal recognition capacity is enhanced through vibration phase and energy difference coupling analysis; harmonic response is compared with material aging data to establish conduction analysis of a degradation determination path, a phase difference, inclination and temperature change to strengthen structure chain type risk identification, and risk identification precision and early warning effectiveness are integrally improved.

The present application relates to a kind of on-chip photo-thermal gas sensor and on-chip photo-thermal gas sensor assembly, the refractive index of the upper waveguide material layer of sensor ridge waveguide layer is greater than the refractive index of lower waveguide material layer, can support TM mode pump light and TE mode probe light simultaneously. That is, both high absorption of pump light and weak influence of probe light on the gas to be measured are considered, and the detection accuracy of the gas is improved. Moreover, a simpler waveguide structure is used, and the waveguide preparation process is simple, and the waveguide loss is relatively low. Compared with the photo-thermal interference method in optical fiber sensing, the interaction between pump light and the gas to be measured is greatly improved, the length of the detection waveguide is greatly shortened while ensuring high sensitivity, and the device size can be reduced to micrometer level. In addition, the waveguide structure of the on-chip photo-thermal gas sensor disclosed in the present application is prepared from chalcogenide glass, which has more obvious advantages for gas detection in the mid-infrared waveband.

The invention discloses an automatic system for brake spring force detection, which relates to the technical field of mechanical engineering and automatic control, and is characterized in that a multi-physics field coupling measurement module adopts a nested force sensor group (a strain gauge and piezoelectric quartz compound) and non-contact displacement measurement, and is combined with a thermal expansion compensation ring to correct temperature influence in real time; the environmental interference suppression module eliminates electromagnetic and thermal interference through an electromagnetic shielding cavity and a temperature control platform; the dynamic error compensation engine realizes drift prediction and physical field fusion by using six-dimensional attitude sensing and edge calculation (LSTM + GPR double-stage model); the self-calibration executing mechanism completes nanoscale positioning and micro-force control based on air flotation driving and the bionic clamping jaw. The method solves the problem of measurement misalignment caused by environmental interference, material thermal deformation and clamping errors in traditional detection, and is suitable for high-precision spring force detection under complex working conditions.

The invention provides a CMOS-MEMS (Complementary Metal Oxide Semiconductor-Micro-Electro-Mechanical System) flow and gas thermal conductivity integrated sensor as well as a preparation method and application thereof, and belongs to the field of sensors. The thermal insulation structure is designed between the thermal flow sensor and the gas thermal conductivity sensor, so that external thermal interference and thermal interference among different internal sensors are reduced, related thermophysical parameters of gas are detected at the same time, the flow is corrected, and the detection accuracy is improved. And the performance of the flow sensor is further improved so as to meet the requirements of flow detection and gas parameter detection in a more complex environment. When the sensor is prepared, a Post-CMOS (Complementary Metal Oxide Semiconductor) process without a mask is adopted, so that a complicated photoetching step is avoided, and the post-processing efficiency of the whole Post-CMOS is greatly improved. According to the sensor disclosed by the invention, a CMOS-MEMS (Complementary Metal Oxide Semiconductor-Micro-Electro-Mechanical System) process of monolithic integration and integrated preparation molding of various sensors is realized through reasonable process design.

The invention provides a circuit breaker fastener assembly and disassembly method and system based on thermally induced phase locking. The method comprises an installation stage and a disassembly stage. The installation stage comprises the following steps: assembling a circuit breaker assembly, pre-tightening a threaded fastener, and debugging an opening distance and an over travel to standard values; a first preset torque T1 is adopted for first-time fastening; the threaded fastener is heated to the target temperature Ttarget at the controllable heating rate through an electromagnetic induction heating device, and an accurate expansion gap is generated; carrying out secondary fastening by adopting a second preset moment T2 in a thermoplastic window period; and naturally cooling to form permanent thermally induced interference fit. The dismounting stage comprises the steps that a pre-cooling low-temperature medium is adopted to cool the threaded fastener to the target temperature Treve at the rapid cooling rate, and interference fit is converted into clearance fit; and lossless dismounting is realized. The invention relates to the technical field of circuit breakers.

The invention belongs to the technical field of electrical equipment insulation detection, and particularly relates to a cable insulation wide-temperature-range dielectric loss detection system which comprises a human-computer interaction interface, a main control processor, an acquisition card, a linear high-voltage amplifier, a micro-current preamplifier, a three-electrode test, a gear shifting communication control module, a power module and a signal conditioning module. The main control processor is connected with the power supply module and the acquisition card, the main control processor is connected with the temperature sensor through the signal conditioning module, the acquisition card is connected with the linear high-voltage amplifier and the micro-current pre-amplifier, and the micro-current pre-amplifier is connected with the gear shifting communication control module; the ultrathin thin film resistance type PT100 temperature sensor is combined with a wave-shaped groove isolation structure, so that the heat conduction error of adjacent temperature measurement nodes is effectively reduced. The depth of the wave-shaped groove is 1.5-3 times of the wire diameter of the thermocouple, and the groove is filled with a nanometer aerogel heat insulation material, thereby guaranteeing the independent measurement of a temperature field, and enabling the thermal interference among a plurality of measurement points to be reduced.

The invention belongs to the technical field of large surface source blackbody temperature control, and discloses a large surface source blackbody multi-channel balanced heating method and device and a medium, and the method comprises the steps: S1, data acquisition: generating a simulation heating data set of a large surface source blackbody through a blackbody simulation system, building a multi-channel actual temperature control system, and obtaining real heating data sets of different channels; s2, performing problem modeling; s3, designing an equalization control strategy; s4, performing model training; s5, verifying and adjusting; and S6, iterative optimization is carried out. According to the invention, the consistency of the heating rate of each channel is enhanced, the influence of thermal interference is reduced, and the overall temperature control system performance of the large surface source black body is improved. And a new research direction and a new application prospect are provided for the development of a temperature control technology.

The present invention discloses a laser composite strengthening method with high surface hardness uniformity and its application. The laser composite strengthening method comprises: performing laser remelting along multiple remelting paths on the surface of a metal component to form a remelting layer, and there is overlap between adjacent remelting paths, and adjacent remelting spots in any remelting path overlap; performing multiple rounds of laser quenching along multiple quenching paths on the surface of the remelting layer to form a quenching layer, and in any round, there is overlap between adjacent quenching paths, and adjacent quenching spots in any quenching path are separated from each other, and for the quenching path, the spot positions between multiple rounds complement each other to form overlaps. The laser composite strengthening method provided by the present invention compensates for the thermal interference between the spots by performing laser quenching with a smaller spot size and smaller heat input on the surface of the remelting layer, and forming quenching paths with partial overlap through multiple rounds of complementarity, thereby forming a surface hardened layer with uniform hardness on the surface of the component.

A method for simulating heat storage of a buried pipe well group in a geothermal reservoir adopts staggered arrangement to replace traditional sequential arrangement, so that the distance between buried pipes is more reasonable, heat interference is minimized, the volume shape of the buried pipes is simplified into a linear unit structure, pipeline volume units are dispersed by adopting a finite element method based on various theories, and the heat storage efficiency of the buried pipe well group is improved. The calculated amount is reduced; and fluid heat transfer characteristics in the pipeline are accurately captured. Then setting soil initial temperature field distribution and initial parameters of fluid in a buried pipeline unit, solving a pipeline unit model by adopting a proper numerical calculation method, and performing real-time monitoring to ensure that a calculation result is stable and accurate; factor sensitivity analysis is carried out by changing in-well parameters and operation parameters, the influence of rock-soil body thermophysical parameters and buried pipe heat exchange characteristic factors on the geothermal reservoir thermal exploitation efficiency is comprehensively researched, and a scientific basis is provided for optimal design and operation of a buried pipe well group. The invention further comprises a system, equipment and a storage medium for implementing the method.

The invention relates to the technical field of storage batteries, in particular to a storage battery temperature control device for a new energy transport vehicle for traffic transportation, which comprises a shell, an air inlet cover is fixedly connected to the bottom of the shell, a driving shaft is rotatably connected to the air inlet cover, a cooling fan is fixedly connected to the top of the driving shaft, and a top partition plate frame is fixedly connected to the top of a polygonal partition frame. Five evenly-distributed limiting seats are fixedly connected to the inner side of the polygonal partition frame, air inlet flow dividing pipes are fixedly connected to the interiors of the limiting seats, ventilation supports are fixedly connected to the tops of the air inlet flow dividing pipes, and battery packs are installed at the tops of the ventilation supports. According to the invention, firstly, a low-energy-consumption basic heat dissipation air channel is constructed by using a hot air rising principle, when it is detected that the temperature of a single battery is abnormal, a directional cooling mechanism can be immediately started, airflow is concentrated to carry out targeted cooling on a heating source, and adjacent air channels are opened through mechanical linkage to carry out collaborative heat dissipation; when a plurality of adjacent batteries are overheated at the same time, linkage is cut off in a self-adaptive manner, thermal interference is prevented, and independent and efficient heat dissipation of each high-temperature point is ensured.

Disclosed in the present invention is a thermal / magnetic shielding composite structure for a flexible Hall type force sensor, which is constituted by an outer thermal-insulation functional layer and an inner low-frequency magnetic field shielding functional layer. The outer thermal-insulation functional layer is formed by combining three composite material layers, which are successively, from outside to inside, a flexible thermal-insulation composite material layer, a flexible high-frequency magnetic field shielding and cooling composite material layer and a flexible thermal-insulation composite material layer; the inner low-frequency magnetic field shielding functional layer is a flexible low-frequency magnetic field shielding composite material layer. The thermal / magnetic shielding composite structure provided by the present invention can effectively shield both thermal interference and broadband magnetic field interference so as to ameliorate the problem of interference in the use of flexible Hall type force sensors, and has excellent elasticity and flexibility, being suitable for manufacturing elastic sensitive elements of different structures and dimensions.

The invention discloses a sea surface vessel detection method and system based on tri-modal attention fusion. According to the invention, visible light, short-wave infrared and medium-wave infrared images are fused, and the problem of missing detection of existing single-mode ship detection under complex sea conditions such as haze, night and thermal interference scenes is solved; according to the invention, multi-level features of a three-mode image are extracted through a backbone network, multi-feature interaction is realized through a double-path deformable attention fusion module, texture-thermal radiation feature complementation is realized, and fusion output is distributed in combination with adaptive weight; in consideration of the problem of poor night short wave infrared data quality, a medium wave dominant degradation fusion strategy is designed, it is ensured that only visible light and medium wave infrared interaction characteristics are used in a night mode, and the influence of low-quality data on model performance is avoided. According to the improved DH-DINO algorithm provided by the invention, the multi-scale information capturing capability can be enhanced, and the problems of modal information redundancy and insufficient complementarity of ship detection under complex sea conditions are solved.

The application discloses a kind of satellite-borne infrared emissivity differential measurement method and device using cold black background, belong to spacecraft thermal control and material on-orbit testing technical field, purpose is to eliminate environmental stray radiation and conduction heat leakage interference, realize material emissivity high-precision in-situ on-orbit test.The application relies on deep space cold black environment and differential disturbance thought, supporting layout emissivity known standard unit and unit to be measured, make two in consistent light thermal condition, respectively establish transient heat balance equation.Because two kinds of units are consistent, such as common-mode interference of stray radiation, conduction heat leakage, two formula difference can be removed interference term, only keep and emissivity related radiation heat loss term.Through the design of different thermal control conditions (such as balance heating, constant temperature control, dynamic heating), the real emissivity of the material to be measured is solved.The application is suitable for in-situ, high-precision measurement of the infrared emissivity of spacecraft surface materials, especially intelligent thermal control materials such as thermochromic materials in space environment.

The present invention discloses a temperature control device and control method based on PCM to isolate internal temperature fluctuations. The bottom of the temperature control device is in contact with the controlled object, and the PCM phase change medium absorbs heat to control the temperature. A cooling medium is introduced into the microchannels surrounded by the PCM phase change medium on all sides. The PCM is maintained at the phase change temperature through a collaborative control algorithm. The isothermal heat absorption characteristics of the phase change latent heat are utilized to suppress pulse thermal fluctuations and isolate the interference of the low-temperature cooling medium on the environment. High-precision temperature-controlled water with the same temperature as the external environment is introduced into the outer microchannel to maintain the temperature of the upper surface of the device and to collaboratively maintain the phase change state of the PCM. The present invention achieves efficient temperature control while suppressing the pulse thermal fluctuations of the heating object and the thermal interference of the cooling medium on the environment, which is beneficial to the uniformity and stability of the internal ambient temperature of the lithography equipment.

The invention discloses an intelligent temperature control mute hand-held fan and a temperature control system, and relates to the technical field of intelligent fans, the intelligent temperature control mute hand-held fan comprises a fan main body, a control circuit board, a temperature detection assembly and an interactive display module, the fan main body comprises a hand-held handle and a fan head assembly fixedly connected to the top end of the hand-held handle, according to the fan head assembly, a containing cavity is formed by buckling a front net cover and a rear shell, a motor and a fan blade assembly driven by a rotating shaft of the motor are arranged in the containing cavity, the problem that temperature measurement is interfered by heating of the motor is solved, and the accuracy of intelligent temperature control is ensured. The suspended and insulated temperature detection assembly is arranged on the front mesh enclosure, and a sensor and a motor heat source are thoroughly isolated through a physical space and an air gap. The situation that the sensor misjudges the environment temperature due to waste heat of the motor is avoided, it is ensured that the fan can conduct logical operation according to real external air temperature data, and the reliability and safety of the temperature control system are improved in cooperation with NTC battery active protection.

The present application relates to the technical field of process optimization, in particular to a kind of collaborative optimization analysis method of multi-station tower cylinder welding.The present application is aimed at the problem that tower cylinder multi-station welding is difficult to be cooperatively controlled, first loads the multimodal perception data of weld visual, arc sensing, heat field distribution, welding voiceprint, constructs fusion evaluation model to obtain weld deviation and sensor confidence score, determines sensor health state according to threshold value, triggers corresponding fault-tolerant reconstruction control mode to obtain welding tracking control parameter, then loads multi-station welding heat source model, decouples heat interference in combination with control parameter and heat field data, cooperatively controls multi-station, outputs and executes collaborative control instruction, realizes welding process optimization.

The invention belongs to the technical field of glass processing, and discloses a multi-section independent precise temperature control heating system for a glass tempering furnace, the multi-section independent precise temperature control heating system comprises a furnace body, the outer wall of the furnace body is provided with a PLC, the left side and the right side of the furnace body are both provided with conveying frames, and the conveying frames are internally provided with a plurality of first conveying rollers; a plurality of second conveying rollers are arranged in the furnace body, the interior of the furnace body is sequentially divided into a plurality of independent heating sections in the glass conveying direction, a fireproof heat insulation plate is arranged between every two adjacent heating sections, and a gap allowing glass to pass through is formed in each fireproof heat insulation plate. According to the scheme, the furnace body is divided into a plurality of independent heating sections through the physical heat insulation plates, and independent temperature measurement and PLC control of each section are combined, so that heat interference among the sections is effectively reduced, closed-loop accurate control can be performed on each section strictly according to preset temperature rise, heat preservation and soaking curves, and accurate management of the heating process of glass in the length direction is realized.

The purpose of the present invention is to integrate a light-emitting element and a light-receiving element while suppressing thermal interference between the light-emitting element and the light-receiving element.　A package (100) is provided with: a substrate (120) on which a light-receiving element (111) is mounted; a base (130) on which a light-emitting element (142) is mounted and which is separated from the substrate (120); and a connection member (125) that connects the base (130) and the substrate (120). The connection member (125) may be extended in the horizontal direction from above the substrate (120) and connected to the base (130). The connection member (125) may be formed around the light-receiving element (111) on the substrate (120). The thermal conductivity of the connection member (125) may be 0.04 W / mK or less. The connection member (125) may be connected to the side surface of the base (130).

The invention discloses an intelligent defrosting control method for an air-cooled single-heat type air conditioning unit, which comprises the following steps: in a heat supply operation state, a low-pressure liquid refrigerant is output through an electronic expansion valve, sequentially flows through a mixing box and a refrigerant distributor to enter a plurality of first heat exchange assemblies, is collected to a gas collecting pipe after absorbing heat and gasifying, and then flows back to a compressor; when the system enters a defrosting mode, the multiple first heat exchange assemblies are sequentially switched to the defrosting state according to the set sequence, and the preferable sequence is that the assemblies with the thermal interference buffering function are arranged; a target assembly in a defrosting state receives a high-temperature gaseous refrigerant led out from an outlet of a condenser by opening a corresponding defrosting bypass electromagnetic valve, and the high-temperature gaseous refrigerant is led into a defrosting control valve and then enters a gas phase inlet; the refrigerant releases heat in the assembly to melt the frost layer to form a liquid state or a gas-liquid mixed state, and finally flows into the mixing box to be mixed with a liquid working medium output by the throttling device. According to the defrosting control method, the air conditioning unit can operate efficiently and stably without interruption of heating.

The application discloses a large-current passive equalization battery management device based on FPC-CCS and relates to the technical field of power batteries or energy storage batteries. In view of the problems of small equalization current, poor heat dissipation and difficult integration of the traditional passive equalization, the device sets a distributed serpentine copper foil resistance network in the FPC integrated layer, and the equalization current is improved to the 10A level. The core structure comprises a signal acquisition unit between flexible insulating film layers, a double-side parallel large-current equalization circuit and an external control module: the signal acquisition unit monitors the cell voltage in real time, and when the threshold value is exceeded, the serpentine resistance network is connected through a MOSFET switch to realize energy dissipation; the double-side layout cooperates with high-thermal-conductivity glue and the original heat dissipation system to make the temperature rise less than or equal to 40 DEG C and improve the heat dissipation area; the control IC is external to avoid thermal interference, and the overall thickness is small. The application solves the defects of large space occupation of discrete resistors and failure caused by high temperature, meets the rapid equalization demand of a high-capacity power battery system, and improves the integration degree and reliability.

The invention discloses a freezing cylinder assembly with an inner-cooling and outer-protecting structure and an ice cream machine comprising the freezing cylinder assembly. The freezing cylinder assembly comprises an inner barrel used for containing ice cream slurry, a refrigeration sleeve arranged in the inner barrel and provided with an evaporator attached to the inner circumferential face, and a stirring paddle arranged on the periphery of the refrigeration sleeve in a sleeving mode. The transmission shaft penetrates through the refrigeration sleeve and is connected with the stirring paddle; the shaft sleeve is arranged on the periphery of the transmission shaft in a sleeving mode, the front dynamic sealing assembly is arranged at the front end of the transmission shaft, and the outer barrel wraps the periphery of the inner barrel. Foaming layers are filled between the outer barrel body and the inner barrel body and between the refrigeration sleeve and the shaft sleeve, efficient inner cooling is achieved in the area, close to slurry, of the evaporator, meanwhile, an external heat insulation barrier is formed, the dual requirements for rapid forming and environmental heat interference resistance of high-viscosity ice cream are effectively met, and the technical contradiction that in the prior art, rapid forming and environmental heat interference resistance cannot be achieved at the same time is solved.