1026 results about "Thermal circuit" patented technology

The invention belongs to the technical field of thermal circuit model construction, and particularly relates to a high-voltage power cable intermediate connection thermal circuit fault modeling analysis method and device, and the method comprises the steps: building a high-voltage power cable intermediate connection thermal circuit fault circuit model through analyzing a cable intermediate connection temperature inversion principle; the method comprises the following steps: establishing a geometric model for multi-physics field analysis of the intermediate connection of the high-voltage power cable by utilizing Comsol finite element simulation software, setting material parameters of each component, and setting field domain parameters; an electromagnetic field module is added, boundary conditions of electromagnetic field analysis are set, and a cable intermediate connection electromagnetic field simulation model is obtained; adding a solid heat transfer module to obtain a solid temperature field simulation model; obtaining an electromagnetic-thermal coupling model, and solving to obtain the temperature, current and loss of the cable middle connection wire core and the outer surface in different insulation states. According to the method, the cable intermediate connection fault problem can be found and predicted, and the reliability and the safety of the power cable are improved.

The invention discloses an automatic control method and device for a thermal management system of an electric vehicle, relates to the field of intelligent control, and realizes multi-step prediction of battery and motor heat production and thermal load change in the future by fusing external information such as a navigation path and weather forecast, plans a thermal management strategy in advance, and improves the response perspectiveness of the system. A multi-source disturbance dynamic structured correlation equalization technology is adopted, the coupling relation between heat sources is modeled, cross disturbance is compensated through a joint state function, and multi-heat-loop cooperative control is achieved. On the basis of a model predictive control (MPC) framework, temperature tracking errors and energy consumption penalty are optimized, the energy consumption of actuators such as a compressor and a water pump is reduced while a safe temperature interval is met, and the endurance is prolonged. And in combination with a state estimator fusion model and observation data, the control precision and robustness under a complex working condition are enhanced, and finally global optimal thermal management considering the service life of parts, the comfort of passengers and the energy efficiency is realized.

The invention discloses an axial flux motor temperature prediction method based on equivalent thermal circuit method calculation, and the method comprises the following steps: 1, motor thermal circuit unit division: decomposing a motor into a stator unit, a rotor unit, an air gap unit and a housing unit, and constructing an equivalent thermal network through a node-branch method; 2, calculating a multi-physics coupling heat source; 3, thermal resistance parameter dynamic calculation and CFD coupling optimization: calculating conduction thermal resistance, convection thermal resistance and contact thermal resistance; and 4, parameter self-calibration based on machine learning: constructing a PINN model according to a physical law and known physical parameters, introducing a Bayesian optimization algorithm on the basis of the PINN model, adjusting and optimizing the parameters of the PINN model by using Bayesian optimization, designing a reinforcement learning algorithm, and carrying out self-calibration on the parameters of the PINN model. Enabling the reinforcement learning algorithm to dynamically adjust parameters according to the real-time operation data of the system and the prediction result of the PINN model; 5, constructing and solving a heat balance equation; and step 6, visualizing and verifying the temperature field.

A thermal management system includes a thermal circuit having a thermal transport bus with a thermal fluid flowing therethrough. The thermal transport bus includes first and second bus segments. First and second thermal loads are on the first and second bus segments, respectively, and have different first and second inlet temperature requirements. The thermal management system includes a plurality of heat exchangers in thermal communication with the first and second thermal loads. The heat exchangers include a first heat exchanger and one or more second heat exchangers. The first heat exchanger is on one of the first or second bus segments for rejecting heat to engine fuel. The thermal fluid is split between each of the first and second bus segments such that only a portion of the thermal fluid flows through the first heat exchanger to accommodate the different first and second inlet temperature requirements.

The invention discloses a pressure storage and heat storage coupled regenerative heat pump power storage system and a regulation and control method thereof. The system is composed of an electric-power generation integrated unit, an energy storage compression and energy release expansion integrated unit, an energy storage expansion and energy release compression integrated unit, a high-temperature heat exchanger, a backheating heat exchanger, a cold energy absorption heat exchanger, a heat storage and cold storage storage tank, a high-pressure gas storage tank and the like. And an energy storage / energy release loop, a heat storage / heat release loop, a cold storage / cold release loop and a pressure heat coupling loop are formed by connecting pipelines. In the energy storage mode, the compressor unit is driven by electric energy to conduct multi-stage compression, and compression heat and expansion cold are stored in the high-temperature storage tank and the low-temperature storage tank correspondingly. In the energy release mode, the heat storage medium and the cold storage medium are sequentially released to supply heat or cold to the circulating working medium, and the expansion unit is driven to drive the generator to generate electricity. According to the method, bidirectional operation of energy storage and energy release is achieved through valve switching and circulation control, and power output and load change are adjusted within a second level through a pressure-heat coupling mechanism.

The invention provides a constant-heating defrosting system of a heat recovery air conditioner and a defrosting control method and device. According to the system, a compressor, a first electromagnetic valve, a water tank, a first expansion valve, a first one-way valve, a second electromagnetic valve, an outdoor heat exchanger and a four-way valve are connected to form a first heating loop; a compressor, a first electromagnetic valve, a water tank, a first expansion valve, a first one-way valve, a third electromagnetic valve, an energy storage water tank, a fourth electromagnetic valve and a four-way valve are connected to form a first defrosting loop. A compressor, a fifth electromagnetic valve, a second one-way valve, an outdoor heat exchanger and a four-way valve are connected to form a second defrosting loop; and the first heating loop, the first defrosting loop and the second defrosting loop form a single heating water defrosting loop. The problem that in the prior art, in the defrosting process, the comfort experience of a user is affected due to the fact that an air conditioner does not conduct heating is solved.

The invention provides an automobile heat pump air conditioner management system and a control method thereof, and relates to the technical field of automobile heat management, in the automobile heat pump air conditioner management system, a heat pump assembly selectively communicates with a liquid cooling condenser and a battery cooler through a valve assembly to form a heating loop or a refrigerating loop; the passenger compartment assembly, the battery pack assembly and the electric drive and electric control assembly are selectively communicated through the first five-way valve and the second five-way valve to form a battery heat exchange loop, a passenger compartment heating loop, a battery heating loop or an electric drive preheating loop. The battery heat exchange loop exchanges heat with the refrigeration loop through the battery cooler; the passenger compartment heating loop, the battery heating loop or the electric drive preheating loop exchanges heat with the heating loop through the liquid cooling condenser, a PTC heater does not need to be additionally arranged, heating of the passenger compartment, the battery pack assembly and the electric drive and electric control assembly can be achieved, and the problem that the automobile energy consumption is high due to the fact that the operation efficiency of the battery pack assembly and the electric drive assembly is reduced at the low temperature is solved.

The invention provides a fuel cell vehicle heat management system and a control method thereof, and the system comprises a fuel cell circulating water path, a fuel cell cathode system and an air conditioner refrigerating and heating loop, an electric pile, an electronic temperature control valve, a first radiator fan assembly, a second electronic three-way valve, a first plate heat exchanger, a first electronic three-way valve and an electric pile water pump are sequentially arranged on the fuel cell circulating water path, and a deionizer and a first PTC heater are arranged on a pipeline between a water outlet of the electric pile water pump and a water outlet of the electric pile in series; a communicating pipeline is arranged between an upper water outlet of the electronic temperature control valve and a water outlet of the first electronic three-way valve; the fuel cell circulating water path exchanges heat with an air conditioner refrigerating and heating loop through a first plate heat exchanger; the fuel cell cathode system comprises an air compressor, an intercooler, a back pressure valve and a bypass valve. The waste heat of the air compressor can be fully utilized, the energy utilization rate is increased, the system structure is simplified, and the energy consumption of the vehicle is reduced.

The invention discloses a battery pack circuit breaking unit and a battery pack, the battery pack circuit breaking unit comprises a printed circuit board, a main relay, a pre-charging relay, a pre-charging resistor, a heating relay, a slow charging fuse and a conductive connecting piece, the printed circuit board is provided with a battery positive electrode interface and a battery negative electrode interface; the main relay is connected with a battery positive electrode interface and a battery negative electrode interface, one end of the pre-charging relay is connected with one end of the pre-charging resistor in series, the other end of the pre-charging relay is connected with the battery positive electrode interface through a conductive connecting piece, and the other end of the pre-charging resistor is connected with the heating relay and the slow charging fuse through conductive connecting pieces. Therefore, the integration degree of the circuit breaking unit of the battery pack is improved, the number of parts used for connection and conduction among the parts is reduced, the loss of current in the transmission process is reduced, the overall size is reduced, and the utilization rate of the internal space of the battery pack is improved, so that the production cost is reduced, and the production efficiency is improved. And the production efficiency is improved.

The invention provides a multilayer substrate via hole electrothermal coupling model construction method considering temperature change parameter change, and relates to the technical field of microelectronics. Comprising the following steps: constructing a # imgabs0 # lumped parameter equivalent circuit model corresponding to a multi-layer substrate via hole structure according to a size parameter, a material parameter and a multi-layer equivalent circuit network cascade mode of the multi-layer substrate via hole structure; constructing an equivalent thermal circuit model corresponding to the multi-layer substrate via hole structure according to the size parameters, the material parameters and the temperature nodes between the adjacent layers of the multi-layer substrate via hole structure; and connecting the # imgabs1 # lumped parameter equivalent circuit model with the equivalent thermal circuit model by utilizing a hardware description language, and establishing a multilayer substrate via hole electrothermal coupling model, so as to obtain the steady-state temperature of the substrate via hole by utilizing the multilayer substrate via hole electrothermal coupling model. Therefore, the temperature change of the via hole can be accurately obtained, the occupied computing resource + is less, and the computing time is shorter.

The invention discloses a load capacity evaluation method for a new energy delivery transformer, particularly relates to the technical field of safe operation of power equipment, and is used for solving the problem that a safe load boundary is not accurate due to the fact that an existing evaluation method neglects an accumulated degradation effect of frequent actions of an on-load tap-changer on heat dissipation performance. The method comprises the following steps: constructing an interval time sequence by recording an action timestamp of an on-load tap-changer in real time, generating a permutation entropy value based on phase-space reconstruction, and triggering heat dissipation degradation evaluation; winding distributed optical fiber temperature and leakage magnetic field three-dimensional data are synchronously obtained, and a temperature-magnetic field coupling network is constructed to extract structural characteristic parameters to generate a heat dissipation degradation evaluation value; converting the evaluation value into a heat dissipation coefficient correction factor, dynamically correcting transformer thermal circuit model parameters in combination with real-time load current, and generating a safety load boundary in an adaptive degradation state; and finally outputting a load capacity evaluation result containing the corrected boundary. And dynamic correlation evaluation of the heat dissipation performance degradation and the safety load capacity of the transformer is realized.

The invention discloses a dynamic simulation modeling method for a compressed air energy storage system based on AMESIM and application, and belongs to the technical field of compressed air energy storage.The method comprises the steps that firstly, system indexes are determined, based on the system indexes, a system technological process diagram is designed, main equipment and auxiliary equipment are selected, and design point parameters of the main equipment and the auxiliary equipment in the energy storage and release stage are determined; then, according to the equipment model selection result, sub-models of all elements in the air circulation loop and the heat storage and exchange loop are selected in the AMESIM; thirdly, calibrating and verifying each main equipment sub-model by utilizing main equipment characteristics and model selection parameters, and building a steady-state simulation model of the compressed air energy storage system; and then, constructing a dynamic simulation model based on the steady-state model, and carrying out dynamic simulation verification and evaluation. According to the method, the co-simulation model integrating thermodynamics, fluid mechanics, control theory and mechanical dynamics can be quickly built, and the method has the advantages of being high in model modeling precision, high in multidisciplinary coupling calculation capacity, high in simulation efficiency and the like.

The invention discloses a cable current-carrying capacity calculation method and device and a storage medium, and the method comprises the steps: constructing a steady-state thermal circuit model for a cable, the steady-state thermal circuit model structurally comprises a conductor, an insulating layer, a buffer layer, an aluminum sheath and an outer sheath, constructing an original thermal circuit control equation for each structure of the steady-state thermal circuit model, and constructing a dynamic characteristic curve representing linkage change between the thermal resistance value and the temperature value under each current for each structure of the steady-state thermal circuit model, correcting the original thermal circuit control equation according to the dynamic characteristic curve to obtain a target thermal circuit control equation, and solving the current-carrying capacity of the cable according to the target thermal circuit control equation. The heat conduction characteristics of the cable under different working conditions can be accurately described by constructing a steady-state thermal circuit model of the cable and carrying out detailed analysis on each structure of the cable. An original thermal circuit control equation is established for each structure, and a target thermal circuit control equation is obtained in combination with the dynamic characteristic curve, so that the current-carrying capacity of the cable can be calculated, and the accuracy of detecting the current-carrying capacity of the cable is improved.

The invention relates to the technical field of cable joint temperature monitoring, and discloses a cable joint temperature monitoring method and system. A target model is constructed based on equipment data of a cable intermediate joint, regions are divided according to geometric shapes and materials to form a topological structure, and an initial thermal circuit model is constructed in combination with temperature field distribution and a thermal resistance branch; and optimizing the model by using the real-time temperature data, and finally judging the running state of the joint through the thermal circuit model. Complex grid discretization is replaced by an equivalent thermal resistance branch through a thermal circuit model, and the calculation speed is remarkably increased; through topological structure division, the limitation of an analytical method on a regular shape is broken through, and a special-shaped structure can be accurately processed; and the thermal circuit model maps an actual boundary through a thermal resistance parameter, so that an error caused by boundary simplification in an analytical method is avoided. The technical problems that a numerical method and an analytical method adopted by a traditional cable connector need to consider grid division and numerical stability, so that the calculation speed is low, and complex geometrical shapes and boundary conditions cannot be accurately analyzed are solved.

The invention relates to a thermal power generating unit and pressure-bearing heat storage coupling system and an operation method.The system comprises a unit subsystem and a heat storage and supply subsystem, the heat storage and supply subsystem comprises a heat storage loop, a heat storage tank, a flash evaporation steam supply loop and a heat exchange hot water supply loop, and the heat storage loop comprises a steam-water heat exchanger, a first mixing heat exchanger and a first booster pump; a steam inlet of the steam-water heat exchanger communicates with the cold re-extraction branch pipe and the hot re-extraction branch pipe, and a high-pressure water inlet and a drainage outlet of the steam-water heat exchanger communicate with a high-pressure water outlet and a drainage inlet of the first mixing heat exchanger correspondingly. A heat storage water outlet and a heat storage water inlet of the heat storage tank communicate with a high-pressure water inlet of the first mixing heat exchanger and a high-pressure water outlet of the steam-water heat exchanger correspondingly, and the flash evaporation steam supply loop and the heat exchange hot water supply loop are used for load rising peak shaving and frequency modulation. The variable load rate of the unit is improved, and frequency modulation of the unit is achieved; and the peak regulation capacity of the unit is improved, and ultra-wide load peak regulation of the unit is achieved.

The invention provides an energy gradient utilization steam Rankine cycle power generation system and method for nuclear fusion, and belongs to the field of nuclear fusion energy conversion and utilization. Different temperature heat of a cladding, a divertor and a vacuum chamber is guided into a high-temperature independent heat storage loop, a medium-temperature independent heat storage loop and a low-temperature independent heat storage loop respectively, an operation section stores heat, and a pause section releases heat; feed water is heated step by step through a multi-stage preheater, an evaporator and a superheater according to the sequence of low temperature, medium temperature and high temperature, and superheated steam of 550 DEG C is formed to continuously drive a turbine to generate power. Decoupling of intermittent output of the fusion reactor and continuous operation of the power generation system is achieved, steam extraction of a steam turbine is omitted, the structure is simplified, and the energy utilization rate and the circulation efficiency are improved.

A system for operating at least a pair of pumps using a driver. The driver can be coupled to a first portion of a first drive shaft that is not positioned in within an interior area of a thermal fluid tank of a first thermal circuit. A magnetic coupling can couple the first portion to a second portion of the first drive shaft that is within the thermal fluid tank. Rotational displacement of the first portion of the first drive shaft can be translated, via the magnetic coupling, to the second portion of the first drive shaft to drive a first fluid pump. The first portion of the first drive shaft can also be coupled to a second drive shaft by a clutch, the second drive shaft being used to operate a second fluid pump that provides a force for circulating a second thermal fluid of a second thermal circuit.

The invention relates to the technical field of heat exchange systems, and discloses a control method and device for a heat exchange system and the heat exchange system. The heat exchange system comprises a heat exchange loop and a refrigerant adjusting branch, the refrigerant adjusting branch is connected with the heat exchange loop and is configured to adjust the refrigerant flow in the heat exchange loop, and a liquid storage cavity is defined by the refrigerant adjusting branch; the control method comprises the steps that the temperature difference value between the indoor temperature and the outdoor temperature is determined; refrigerant pressure in the liquid storage cavity is obtained; and the liquid storage volume of the liquid storage cavity is adjusted according to the temperature difference value and the refrigerant pressure. According to the embodiment, the amount of the refrigerant participating in heat exchange circulation in the heat exchange system can be adjusted, and the performance of the heat exchange system is improved.

The invention discloses an integrated thermal management system and a control method thereof. The system comprises a heat pump loop, a heating loop, a battery loop and an electric drive cooling loop. The heat pump loop can conduct heat exchange with the heating loop through a second heat exchanger and provide heat for the heating loop, can conduct heat exchange with the electrically-driven cooling loop through a third heat exchanger and obtain heat from the electrically-driven cooling loop, and can conduct heat exchange with the battery loop through a fourth heat exchanger and provide heat for the battery loop. The refrigerating capacity can be provided for the passenger compartment through the evaporator; the heating loop can provide heat for the passenger compartment through the warm air core body; the battery loop can be communicated with the electrically-driven cooling loop, can exchange heat with the heating loop through the first heat exchanger, and is used for adjusting the temperature of the power battery; the electric drive cooling loop is used for achieving heat dissipation of the electric drive system and can provide heat for the heat pump system through the third heat exchanger.

The invention relates to a fused salt heat storage system based on heat energy grading matching. The system comprises a first-stage heat exchange unit, a second-stage heat exchange unit, a third-stage heat exchange unit and a mixing unit, and the first-stage heat exchange unit comprises a first-stage fused salt heat storage loop and a first-stage heat exchange adjusting valve and is used for absorbing and storing high-grade heat of exhaust gas of an exhaust pipeline of a boiler furnace; the second-stage heat exchange unit comprises a second-stage fused salt heat storage loop and a second-stage heat exchange regulating valve and is used for absorbing and storing high-grade heat of main steam extraction of a main steam extraction pipeline of a high-pressure cylinder of the steam turbine; the third-stage heat exchange unit comprises a third-stage fused salt heat storage loop and a third-stage heat exchange regulating valve and is used for absorbing and storing low-grade heat of air exhaust of an intermediate-pressure cylinder of an air exhaust pipeline of the intermediate-pressure cylinder of the steam turbine; the mixing unit mixes the three kinds of exhaust heat and outputs working medium fluid meeting the target temperature so as to adapt to different preset operation working conditions of the thermal power generating unit. Therefore, heat energy can be stored and released in a gradient mode through the system, wide-temperature-range efficient utilization is achieved, and the flexibility and energy efficiency of the thermal power generating unit are improved.

The utility model provides a low-energy-consumption fused salt micro-channel heat exchanger performance testing platform supporting long-time operation. The platform comprises a fused salt loop, a steam loop and a heat conduction oil heat storage loop. Wherein the steam loop can perform primary steam energy recovery, is led out from a steam side outlet of a tested fused salt micro-channel heat exchanger, is sequentially connected with a steam pipeline of the fused salt preheater, a steam pipeline of the steam-water-oil heat exchanger and the steam-water electric heater, and then is connected into a steam side inlet of the tested fused salt micro-channel heat exchanger; wherein the fused salt preheater is connected to a pipeline between a low-temperature fused salt tank and a high-temperature fused salt tank in the fused salt loop, and recycled steam energy is used for heating low-temperature fused salt; the heat conduction oil heat storage loop can conduct secondary energy recovery, and residual steam energy in the steam-water-oil heat exchanger is further recovered into heat conduction oil. According to the test platform, high-temperature steam energy discharged by the test platform can be fully recycled and utilized, and long-time operation of the test platform is realized while energy waste is reduced.

The invention discloses a high-efficiency explosion-proof three-phase asynchronous motor, which comprises a motor, the motor comprises a shell, a stator, a rotor and a rotating shaft, the outer wall of the driving end of the rotating shaft is fixedly connected with a compression fan, the shell is provided with backflow channels, and the backflow channels are annularly distributed on the shell in an array manner. The two ends of the shell communicate with the left end and the right end of the shell correspondingly, so that airflow forms a closed heat exchange loop in the shell; a heat conduction connecting frame is arranged between the inner wall of the shell and the stator, extends to the left end of the stator and is provided with a shunting cover; the invention belongs to the technical field of motors, aims to solve the problem that in the prior art, the temperature of internal parts of a motor shell cannot be effectively conducted to the shell, and local heat accumulation is likely to be generated, and achieves the technical effects that airflow is divided into two strands through a flow dividing cover, and the inner strand of airflow directly cools the left end of a rotor and the left end of a stator through an exhaust port; the outer airflow strengthens cooling of the outer wall of the stator, and accurately distributes the airflow to the end part of the rotor / stator with the most serious heat accumulation.

The invention provides an efficient design optimization method and platform for gas insulated power transmission equipment, and the method comprises the steps: obtaining a variable set composed of a plurality of variable values according to a structure variable interval of the gas insulated power transmission equipment, carrying out the scanning calculation of the variable set, and obtaining the corresponding vortex field distribution and ohmic loss; determining a target loss value corresponding to each variable combination through a loss regression function; taking the target loss value as heat source excitation input of a thermal circuit model to obtain a temperature target function; obtaining a total cost objective function of the unit length according to the cost of the metal material and the internal insulating gas of the unit length equipment; solving the objective function and the nonlinear constraint function through a multi-objective particle swarm optimization algorithm to obtain a Pareto optimal solution set; determining a final target design scheme from the Pareto optimal solution set by adopting an approximate ideal solution sorting method; according to the technical scheme, the working efficiency of design optimization of the gas insulated power transmission equipment is improved, and the research and development period of the equipment is shortened.

The invention discloses a signal integrity analysis and optimization method considering electrothermal coupling and parasitic effect in an artificial intelligence chip. According to the method, aiming at a random resistive memory cross array in an artificial intelligence chip, an RRAM compact model is combined to research the influence of device electrothermal coupling and parasitic effect on signal integrity in the cross array, evaluation analysis is carried out, and an optimization scheme is provided. Comprising the following steps: (1) based on a compact model of an RRAM device, establishing an equivalent thermal circuit network to represent an electrothermal coupling effect of a device in a cross array; (2) establishing an interconnection line equivalent circuit model containing parasitic resistance, capacitance and inductance, and extracting parasitic parameters in the model by adopting a partial element equivalent circuit (PEEC) method; (3) analyzing a simulation result, and realizing signal integrity evaluation considering electrothermal coupling, parasitic effect and the like; and (4) proposing an optimization scheme for the problems of parasitic voltage drop and leakage path. The method has important application value in random resistive memories and neuromorphic brain-like chips.

The embodiment of the invention discloses a transformer winding overheating fault diagnosis method, and relates to the technical field of power equipment state monitoring, and the method comprises the steps: building a temperature field model of a target transformer under a normal working condition and a plurality of preset winding overheating fault working conditions through a finite element simulation method, and obtaining a temperature field model of the target transformer based on a simulation result; calculating to obtain a group of fault temperature rise critical values corresponding to the positions of the winding sections; when the transformer runs on line, actual measurement temperature rise data of a plurality of positions on the surface of a box body of the transformer are obtained, and the actual measurement temperature rise data are compared with a fault temperature rise critical value so as to locate a winding section where an overheating fault occurs; for the fault section, solving an actual overheating temperature rise value of the fault section through an inversion calculation method by utilizing a preset transformer equivalent thermal circuit model and combining the actually measured top layer oil temperature and bottom layer oil temperature data; high-precision simulation is arranged offline, an efficient algorithm is used online, the diagnosis precision and efficiency are both considered, the accuracy is high, and the practicability is high.

The invention belongs to the technical field of heat exchangers, and particularly relates to a testing system of a phase change energy storage heat exchanger. The test system comprises a water storage unit, a heating unit, a cooling unit and a phase change energy storage heat exchanger unit. The test system can quickly test multiple alternate cooling and heating circulation working conditions such as same-direction, reverse and horizontal flow of the cooling and heating loop. In addition, the outlet temperature of the fluid working medium of the phase change energy storage heat exchanger can be accurately obtained in real time, and the heat storage capacity of the phase change energy storage heat exchanger can be accurately verified. Besides, basic data are provided for engineering design of the phase-change energy storage heat exchanger, the design condition of the phase-change energy storage heat exchanger can be evaluated, the optimization direction of application of the phase-change energy storage heat exchanger in the aerospace field is fully known and mastered, design errors of the phase-change energy storage heat exchanger are reduced, and the design efficiency is improved. And the technical development of application of the phase change energy storage heat exchanger to the high-power space load is promoted.

The invention belongs to the technical field of power distribution automation of a power system, and particularly relates to a self-adaptive load control method and system for an intelligent cable branch box, and the method comprises the steps: collecting and preprocessing the current data of a branch loop and the temperature data of a cable joint in real time, obtaining a data confidence factor, and extracting a current change rate and a temperature rise rate; obtaining a load prediction value in a future set time period through a load trend prediction model; calculating the residual heat tolerance time for reaching the limit tolerance temperature; calculating an output load control adjustment coefficient based on the adaptive load control decision model and a particle swarm optimization algorithm; and judging a current state interval according to the load control adjustment coefficient, and controlling an execution end to execute a grading response strategy of through-flow maintenance, short-time overload monitoring and early warning and breaking current limiting in combination with the residual heat tolerance time. According to the method, the residual heat tolerance time is calculated in combination with load prediction and a transient thermal circuit model, and hierarchical response of load control is realized through a particle swarm optimized radial basis function neural network decision.

A vehicle, including: a battery; a battery cooling circuit configured to allow a first coolant to flow and adjust a temperature of the battery; a refrigeration cycle for air conditioning including an electric compressor, a condenser, an outdoor heat exchanger, and an evaporator, and configured to allow a second coolant to flow; and a heating circuit including a heater core and configured to allow a third coolant to flow, in which the battery cooling circuit, the refrigeration cycle, and the heating circuit are configured to allow the first coolant, the second coolant, and the third coolant flow through respective circuits independently, and the condenser is configured to exchange heat between the second coolant flowing through the refrigeration cycle and the third coolant flowing through the heating circuit.

The invention discloses an integrated parking heater heat management system, which belongs to the technical field of heater heat management and is provided with a parking heater combustion loop, a tail gas waste heat recovery loop, a cooling heat energy recovery loop, a heat accumulator loop and other heat source loops, and oil inlet and fan air inlet are adjusted in real time according to multi-block temperature and preset temperature. Fuel loss is effectively reduced while operation is intelligent, various heat sources such as a heat storage loop, a parking heater combustion loop, a tail gas waste heat recovery loop and a cooling heat energy recovery loop can be integrated, comprehensive recycling and efficient distribution of heat energy are achieved, the operation cost is reduced, and the heat energy utilization rate is increased.

The invention relates to the technical field of heat exchange systems, and discloses a control method and device for a heat exchange system and the heat exchange system. The heat exchange system comprises a heat exchange loop and a refrigerant adjusting branch, the heat exchange loop comprises a compressor, an outdoor heat exchanger, a throttling device and an indoor heat exchanger which are sequentially connected, and the refrigerant adjusting branch is connected with the heat exchange loop between the throttling device and the heat exchanger in parallel. The length of the heat exchange loop between the first end of the refrigerant adjusting branch and the throttling device is smaller than that of the heat exchange loop between the second end of the refrigerant adjusting branch and the throttling device; the control method comprises the steps that operation parameters of the heat exchange system are obtained; and the refrigerant storage amount of the refrigerant adjusting branch is adjusted according to the operation parameters of the heat exchange system. According to the embodiment of the invention, the operation parameters of the heat exchange system can be obtained, and the refrigerant storage amount of the refrigerant adjusting branch is adjusted according to the operation parameters of heat exchange, so that the rationality of the refrigerant amount, participating in heat exchange circulation, of the heat exchange system under different working conditions is improved, and the performance of the heat exchange system is improved.