329 results about "Maximum temperature" patented technology

The invention relates to the technical field of semiconductor electrical equipment cooling, and discloses an electrical control cabinet cooling device and a control method thereof. The thermal load trend, the maximum temperature rise expected value and the temperature rise rate change interval in the electrical control cabinet can be predicted in real time based on historical operation data training and the current operation state. The method comprises the following steps: carrying out prospective evaluation on a cooling demand by combining a feature extraction mechanism and a time sequence modeling capability so as to output a more refined predictive control parameter, and finally generating a multi-dimensional cooling control instruction according to the predictive control parameter and a current operation state so as to realize dynamic scheduling of a cooling assembly. And the response timeliness and the energy efficiency matching degree are obviously improved.

The invention discloses a large-space temperature distribution optimization method for an electronic clean workshop, and the method comprises the steps: determining the initial design parameters of a clean room, including the design temperature difference delta Tset of the clean room, the initial arrangement rate and wind speed of a fan filter unit, and the comprehensive heat transfer coefficient K of an enclosure structure; calculating outdoor heat transfer heat flow density q; dividing the upper interlayer space into a plurality of areas, and calculating the average temperature of each area of the upper interlayer; calculating the space temperature distribution of the clean room; the maximum temperature difference delta Tmax of the clean room is calculated, and the deviation ratio delta between the maximum temperature difference delta Tmax and the designed temperature difference is calculated; when delta Tmaxgt; delta Tset or delta gt; when a threshold value is set, the heat transfer resistance of the enclosure structure, the average arrangement rate of fan filter units and the air speed are adjusted; and outputting the adjusted heat transfer resistance of the enclosure structure of the clean room, the average arrangement rate and wind speed of the fan filter units and the arrangement rate of the fan filter units in the partial area of the clean room. According to the method, the temperature distribution of the large-space clean room can be quickly calculated, and the temperature distribution of the large-space clean room can be accurately controlled.

The invention provides a graphitization furnace comparison verification temperature measurement method and system and a medium, and the method comprises the steps: obtaining the parameter information of a graphitization furnace, and setting a plurality of infrared high-temperature thermodetectors and a plurality of memory graphite rods; collecting real-time temperature data of the furnace core area, and analyzing and processing the real-time temperature data to obtain infrared temperature measurement data; taking out the plurality of memory graphite rods from the graphitization furnace, and carrying out multi-dimensional measurement analysis on the memory graphite rods based on a plurality of measuring instruments to obtain burning loss degree quantitative data; performing maximum temperature inversion on the memory graphite rods placed at different positions of the furnace core area based on the burning loss degree quantitative data to obtain maximum temperature distribution conditions of different positions of the furnace core area; the infrared temperature measurement data and the highest temperature distribution condition of the memory graphite rod are compared and verified, and the real temperature of the furnace core area is obtained; through combination of the infrared high-temperature measuring instrument and the memory graphite rod, cross validation is realized, and the accuracy of a temperature measurement result is improved.

The invention discloses a method for evaluating rock mass fracture freeze-thaw fracture damage risk based on surface temperature, which comprises the following steps: S1, carrying out data acquisition on a target area based on a multi-source sensor carried by an unmanned aerial vehicle platform, and obtaining fracture geometric parameters, daily surface minimum temperature, daily surface maximum temperature, daily temperature difference and fracture moisture conditions; s2, on the basis of the geometric parameters of the crack, constructing a crack frost heaving force analytical model; obtaining a quantitative relation between the stress intensity factor and the environment temperature; s3, the I-type fracture toughness of the target rock mass is measured, and the critical crack initiation temperature of the rock mass is determined; determining the number of critical freezing and thawing cycles; s4, on the basis of the daily earth surface minimum temperature, the daily temperature difference, the fracture moisture condition and the critical crack initiation temperature, the annual accumulated effective freezing and thawing cycle number is obtained; and calculating a freeze-thaw damage ratio, and carrying out risk quantification and grading. According to the invention, the problem of inaccurate evaluation caused by limitation to local monitoring and lack of an environment factor and material parameter integrated evaluation framework in the prior art is solved.

The invention relates to the technical field of optimization control of a battery thermal management system, in particular to a battery thermal management system optimization method. Comprising the following steps: S1, acquiring a running state parameter and a battery aging state parameter of a battery pack; constructing a thermal characteristic prediction model based on the operation state parameters to generate a predicted maximum temperature and a predicted maximum temperature difference; s2, setting an energy consumption optimization target and an initial security constraint; combining the predicted maximum temperature and the predicted maximum temperature difference to construct a Lagrangian optimization function considering the initial safety constraint; s3, calculating a battery aging factor based on the battery aging state parameters; dynamically correcting the initial safety constraint according to the battery aging factor to generate a corrected dynamic safety limit value; and updating a Lagrange optimization function by using the corrected dynamic safety limit value, and solving the updated Lagrange optimization function to output an optimal cooling system power instruction. According to the method, dynamic self-adaptive adjustment of the thermal management security boundary is realized.

A system for monitoring a switchgear includes an infrared camera; a processing unit; and an output unit. The camera acquires a first infrared image. The processing unit determines a pixel in the first image with a maximum temperature and uses a second number of pixels to determine a temperature interval. The processing unit sorts the pixels in descending order of temperature to determine a threshold temperature and determines that a hot spot exists in the switchgear using the temperature interval for the first infrared image. The output unit is configured to output an indication of a fault in the switchgear when the determination has been made that a hot spot exists in the switchgear.

The invention discloses an electromagnetic heating system, and a method and a device for detecting the thermistor of the electromagnetic heating system. The method comprises the following steps of: recording the temperature value obtained by the thermistor as a first temperature value when the electromagnetic heating system is powered on; recording the temperature value obtained by the thermistoras a second temperature value when the electromagnetic heating system is in a standby state; obtaining the maximum temperature value and the minimum temperature value of the temperature value obtainedby the thermistor in a continuously preset second preset time every other first preset time during the heating process of the electromagnetic heating system; and judging whether the thermistor is ina failure state or not according to the first temperature value and / or the second temperature value, the maximum temperature value, and the minimum temperature value. The method for detecting the thermistor of the electromagnetic heating system judges whether the thermistor fails or not according to the static temperature values at the time of power-on and standby and the dynamic temperature valuein the heating process, so that the accuracy and the reliability of the judgment are greatly improved, and the safety of the system is improved.

Provided is a non-oriented electrical steel sheet that is excellent in iron loss and magnetic anisotropy under high magnetic flux and high frequency conditions, and a method for manufacturing the same. [Solution] A method for producing a grain-oriented electrical steel sheet includes the steps of heating a slab containing, by weight, 1.5 to 6.5% Si, 0.0005 to 3.5% Al, 0.01 to 3.0% Mn, 0.005 to 5.0% Cr, 0.0005 to 0.03% S, the balance being Fe and other unavoidable impurities, at 1050 to 1220°C, finish hot rolling the slab to obtain a hot-rolled sheet, hot-rolling the hot-rolled sheet at 850 to 1150°C for 30 to 300 seconds, cold-rolling the hot-rolled sheet that has been annealed to obtain a cold-rolled sheet, heating the cold-rolled sheet, and rolling the heated cold-rolled sheet. and final annealing at 600 to 1150°C for 10 to 300 seconds, wherein the cold rolling satisfies the following [Relationship 2], wherein the heating rate in the temperature range of 300 to 500°C during heating is 5 to 150°C / s, and the gas atmosphere in the temperature range of 500 to 750°C during the final annealing is composed of, by volume, 15 to 99.99% hydrogen, 0.0001 to 0.0030% oxygen, and the balance being an inert gas, and the oxygen content in the gas atmosphere in the temperature range of 800 to 1100°C during the final annealing is 1 to 1.5 times that in the temperature range of 500 to 750°C. [Relationship 2] Maximum temperature of cold-rolled sheet surface during cold rolling < 200 × cold rolling reduction / 100 + 40

The invention relates to the technical field of parameter cooperative control, and discloses a multi-parameter cooperative control method and an incubator, and the method comprises the steps: carrying out the disturbance measurement of the heating power and carbon dioxide injection in an incubator body, and calculating a temperature-to-concentration influence coefficient and a concentration-to-temperature influence coefficient; identifying door opening disturbance according to the door state signal jump and the maximum temperature drop rate and the concentration drop rate of the N temperature sensors, and collecting maximum temperature deviation and concentration deviation; on the basis of the maximum temperature deviation and the concentration deviation, the opening degree of an electromagnetic proportional valve is set to be in a large-flow state to rapidly recover the carbon dioxide concentration, and after concentration recovery is completed, control parameter compensation is conducted according to the temperature-to-concentration influence coefficient and the concentration-to-temperature influence coefficient. According to the method, the problem that temperature adjustment and concentration adjustment interfere with each other is solved, and cooperative control over parameters is achieved.

The invention discloses an over-temperature protection method, device and equipment for a power module of a motor controller, and belongs to the technical field of vehicle safety, and the over-temperature protection method for the power module of the motor controller comprises the steps: determining the running state of a vehicle according to the rotating speed of a motor if the three-phase temperature of the power module of the motor is detected to be abnormal; if the running state represents that the vehicle runs, a first temperature difference value between the maximum temperature and the minimum temperature in the three-phase temperature is determined; and if the first temperature difference value is within a preset temperature range, reducing the output power of the motor according to the average temperature of the three-phase temperature. According to the scheme, the problem that due to the fact that the temperature sensor detects the partial temperature of the power module inaccurately, the vehicle takes protection measures according to the inaccurate temperature, and then the vehicle cannot run normally can be solved.

To disclose a technique capable of reducing occurrence of season cracking of a continuously cast slab.SOLUTION: In a cooling process of a continuously cast steel slab having a predetermined chemical composition, a process for imparting a temperature distribution to the slab is started at any point of time when a representative temperature on a surface along a width direction and a longitudinal direction of the continuously cast slab reaches 600°C from 1200°C. The temperature distribution is applied to the surfaces so as to satisfy, after the start, two conditions that (A) a difference ΔT between a maximum temperature and a minimum temperature in a length of 2000 mm along a longitudinal direction of the surfaces is 150°C or more, and (B) an interval I1 between a portion having the maximum temperature and a portion having the minimum temperature in the length of 2000 mm along the longitudinal direction of the surfaces is 180 mm or more and 1000 mm or less.SELECTED DRAWING: Figure 1

The invention provides a method for optimizing a technology for painting, glazing and firing porcelain on a crystal surface, the optimized crystal belongs to a high-temperature-resistant material which is hard in texture, high in density and poor in adhesive force and has very high requirements on coloring and glazing of underglaze color, and pigments and glaze materials with strong adhesive force need to be manufactured, firstly, the surface of an optimized crystal object is polished to be in a moderate frosted state; then, pigment with moderate water content and extremely fine granularity is used for drawing, first-time fixation firing is carried out after coloring, and the highest firing temperature is 600 DEG C; after cooling, glaze is sprayed for 1-2 times for secondary firing, the temperature is selected according to the glaze, repeated coloring and glazing and repeated firing can also be performed according to creation requirements, and the highest firing temperature does not exceed 1650 DEG C. And the peak high-temperature time is controlled to be 10-20 minutes, so that the effect of fusing the glazing color and the crystal surface can be realized. According to the method, the defects that in the prior art, crystal and glaze are difficult to combine, and the firing effect is not ideal are overcome, and the exquisite and lasting crystal surface decoration effect is achieved.

The invention provides a testing device and a testing method for postprocessor temperature field calibration, and belongs to the technical field of internal combustion engine postprocessing, and the method comprises the following steps: installing the testing device, fixing a plurality of thermocouple probes on a base, and enabling the end surfaces of the thermocouple probes to extend to a specified measurement area of a diesel particle filter; triggering and starting a regeneration process of the diesel particulate filter under a target working condition, and synchronously collecting temperature data from the thermocouple probe in real time; calculating the maximum temperature gradient in the diesel particulate filter based on the temperature data; and comparing the maximum temperature gradient with a preset safety threshold, and adjusting a regeneration control strategy according to a comparison result. According to the invention, the test efficiency, the data accuracy and the economical efficiency are obviously improved.

Before a rolling pass (i), characterized by a parameter set (Λi), of a strip (100) in a roll stand (10), a minimum and maximum temperature (Tmin, Tmax) and a minimum and maximum coefficient of friction (µmin, µmax) are predefined and, from a setup model (200), limit values (Emin, Emax) for an emulsion actuator (21,..., 23') and setup values for the emulsion actuator (21,..., 23'), for a cooling actuator (41,..., 42') and for a lubricating actuator (31,..., 32') are predefined. During the rolling pass (i), the actuators are set to the setup values. An actual strip temperature (T') is identified by a temperature measuring device (51, 52), and an actual coefficient of friction (µ') is identified from measured manipulated-variable actual values (M'). These are taken as a basis to identify improved setup values either only for the cooling actuator (41,..., 42') and / or the lubricating actuator (31,..., 32'), or, if a change in the applied coolant rate or lubricant rate behaves synergistically with respect to the emulsion rate, additionally also for the emulsion actuator (21,..., 23'). The improved setup values are transferred from the setup model (200) to the parameter set (Λi).

Method for protecting a branch of an electrical circuit in a motor vehicle. Method for protecting a circuit branch located between an electric battery and equipment, comprising a step (E2) of comparing the measured temperature at a given point on the branch to a maximum temperature threshold, and then, when the measured temperature is above the threshold, a command to open the branch and / or a command to deactivate the equipment; and a step (E3) of measuring the intensity of an electric current flowing through the branch of the electrical circuit, then calculating an estimated temperature at the given point, and comparing the estimated temperature to the maximum temperature threshold, and then, when the estimated temperature is above the maximum temperature threshold, a command to open the branch and / or a command to deactivate the equipment. Figure for the abstract: 2

The present invention relates to a system (100) for making hybrid heating systems more efficient, characterized in that it comprises a combustion heat generator (20) adapted to be powered by a fuel mixture comprising or consisting of hydrogen or a mixture of hydrogen and oxygen, an electrolyser (30) adapted to produce said mixture of hydrogen and oxygen, a heat pump (10) comprising a low-temperature heat source, at least one heat exchanger (40) connected to said electrolyser (30) and to said heat pump (10), said exchanger being adapted to recover the waste heat from said electrolyser (30) and to transfer it to an evaporator of said heat pump (10), an accumulation tank (70) for storing a thermal fluid produced by said heat generator (20) and / or by said heat pump (10), temperature sensing means, and a memory and a control unit connected to said temperature sensing means and to said memory in which the value of a maximum ambient temperature Tamb, a maximum temperature of the accumulation tank Tam, a minimum operating temperature of the heat pump Tmin and a maximum operating temperature of the heat pump or of the thermal fluid Tmax is saved, said control unit being configured to acquire the values of the temperature of said accumulation tank Tacc, of said low-temperature heat source of said heat pump TE and of the temperature of the environment to be heated TA by means of said temperature sensing means, check if said temperature of the environment to be heated TA is lower than said maximum temperature of the environment Tamb and said temperature of said accumulation tank Tacc is lower than said maximum temperature of the accumulation tank Tam and, if so, generate a signal to switch on said combustion heat generator (20) and said electrolyser (30), and check if said temperature of the low-temperature heat source of the heat pump TE is higher than the minimum operating temperature of the heat pump Tmin and said temperature of said accumulation tank Tacc is lower than the maximum operating temperature of the heat pump or of the thermal fluid Tmax and, if so, generate a signal to switch on said heat pump (10). The present invention also relates to a method for controlling a system for making hybrid heating systems more efficient.

This invention discloses an isothermal extrusion method for aluminum alloys based on data feedback optimization control, belonging to the field of metal material processing technology. The method includes: Step 1, extruding an aluminum alloy rod at a preset initial temperature and a preset initial extrusion speed; Step 2, acquiring the extrusion exit temperature of the aluminum alloy rod in real time, and determining in real time whether the extrusion exit temperature is not less than a preset maximum temperature. If so, adjusting the extrusion speed in real time using a preset control equation until the current aluminum alloy rod extrusion is completed; Step 3, acquiring the function of the extrusion speed changing with time during the current aluminum alloy rod extrusion process, and correcting the function to obtain the corrected speed for extruding the next aluminum alloy rod; Step 4, if further extrusion is needed, extruding the next aluminum alloy rod at a preset initial temperature and corrected speed, and returning to Step 2 for repeated execution. This invention can significantly improve the efficiency and quality of aluminum alloy extrusion forming.

A liquid cooling structure for cooling an object to be cooled, according to an embodiment of the present invention, comprises: a microchannel unit for exchanging heat, by means of a cooling liquid, with an object to be cooled; a cover unit comprising an inlet for introducing the cooling liquid into the liquid cooling structure and an outlet for discharging the cooling liquid from the liquid cooling structure; and a manifold unit formed to allow the cooling liquid to flow between the cover unit and the microchannel, wherein the microchannel unit includes a plate layer in contact with the cooling liquid and a microchannel layer formed on the plate layer to have a first microchannel, in which the cooling liquid flows, formed therein. The liquid cooling structure according to the present invention allows a flow of the cooling liquid to be effectively distributed in the microchannel unit such that the object to be cooled can be uniformly cooled, thereby lowering the maximum temperature of the object to be cooled.

The invention provides a thermocouple verification furnace which is a vertical verification furnace and comprises a furnace core assembly, a one-way atmosphere protection device and a thermocouple positioning device. Through the design of the heat insulation layer, the highest temperature can reach 1800 DEG C, the upper limit of 1600 DEG C of a traditional high-temperature verification furnace is broken through, platinum and other high-melting-point materials can be melted, verification is carried out when the temperature exceeds 1600 DEG C, calibration is carried out through a fuse method by utilizing pure metal materials, and the calibration precision is improved; a vertical furnace is adopted to solve the problem of high-temperature deformation in the gravity direction of a furnace tube of a common horizontal thermocouple verification furnace; in the verification process, the whole process is protected by using the protective gas, so that the detected thermocouple is prevented from being oxidized under the high-temperature verification condition.

Disclosed herein is a method and system for controlling temperature variations across a battery pack of a vehicle. The method comprises receiving cooling inlet parameters associated with a cell cooling plate and cell parameters of a plurality of cells of the battery. Further, the method comprises determining the temperature at the cell cooling plate interface by applying a Physical Informed Neural Network (PINN) model. Based on the determined temperature, the method calculates a maximum temperature deviation across each cell. Thereafter, the method comprises determining at least one of an optimal coolant inlet flow rate and an optimal coolant inlet temperature for the cell cooling plate interface when the maximum temperature deviation exceeds a temperature threshold value. Finally, the method comprises controlling the temperature variations across the battery pack based on the determined optimal coolant inlet flow rate and the optimal coolant inlet temperature.

The application relates to a battery heat management method and device, electronic equipment, a storage medium and a program product. The method comprises the following steps: collecting a plurality of temperature values of a battery module; calculating the highest temperature, the lowest temperature and the maximum temperature difference of the battery module according to the plurality of temperature values, and identifying the current operation mode of the direct-cooling battery management system; if the current operation mode is the battery direct-cooling mode, determining the rotating speed of a compressor according to the highest temperature, determining a plurality of evaporation flow channel superheat control coefficients according to the maximum temperature difference, controlling the compressor according to the rotating speed of the compressor, and simultaneously controlling the superheat of the corresponding evaporation flow channel according to the plurality of evaporation flow channel superheat control coefficients, so as to cool the battery module. In this way, the heat management function of the battery module is accurately controlled by monitoring and controlling the heat of the battery module, the quality, volume and flow resistance of the battery heat management system are reduced, and the adaptability of the battery module is improved.

A method and compression mold are provided for producing a sandwich component, in which an outer shell and an inner shell are compressed, together with foam particles in a cavity between the shells, which cavity is formed by two mold halves of a mold, under pressure and at an increased temperature to form the sandwich component. At least one mold half is heated in a first temperature-control zone to a higher maximum temperature than in a second temperature-control zone.

A method and system for estimating a temperature of a clutch and a maximum temperature of a clutch are described. In one example, the maximum temperature of the clutch is based on phases of a transmission gear shift. The transmission gear shift may include a power-on downshift and a power-on upshift.

A method for producing a porous ceramic structure, comprising the following: a) Making kneaded clay by kneading a raw material; b) Obtaining a pressed body by shaping the kneaded clay and c) Firing of the pressed body, wherein the raw material contains the following: Cordierite; Cer and iron and / or manganese and / or cobalt, wherein the process c) forms a porous ceramic structure comprising a porous structural body formed essentially of cordierite, cerium-containing particles firmly attached to the structural body, and metal oxide particles each firmly attached to an inside of a pore in the structural body, wherein the metal oxide particles are particles of an oxide having a spinel structure containing iron and / or manganese and / or cobalt, The process c) includes the following: c1) Raising the temperature of the pressed body to a first temperature that is less than or equal to a liquid phase formation temperature; c2) Increasing the temperature of the pressed body from the first temperature to a second temperature that is higher than the liquid phase formation temperature and lower than a crystallization temperature of the metal oxide particles; c3) Increasing the temperature of the pressed body from the second temperature to a third temperature which is greater than the crystallization temperature and less than or equal to a maximum temperature; and c4) Maintaining the temperature of the press body at the maximum temperature for a specified period of time, and wherein a rate of temperature increase in process c2) in the range of 100 °C / h to 200 °C / h.

The invention discloses a power management system adapted to an extremely low temperature environment. Through a multi-level self-adaptive heating mechanism and a hardware-algorithm cooperative control strategy, stable operation in an extremely low temperature environment is realized. The power manager integrates a closed-loop temperature control system and double-order starting logic of'hardware priority-software takeover ', the special charger adopts a distributed temperature sensing and space temperature field reconstruction technology, reliable charging and discharging management under the extreme environment of-68 DEG C is achieved through cooperation of the closed-loop temperature control system and the space temperature field reconstruction technology, heating extra power consumption is reduced by 90% or above, and the maximum temperature difference of a battery bin is smaller than or equal to 2 DEG C; and the cold start success rate is 100%. The power supply system can be widely applied to extremely-low-temperature individual power supply systems, extremely-low-temperature battery packs and other scenes, and the core technical bottleneck of the power supply system in an extreme environment is solved.

The invention discloses a temperature control method, a wire controller and a computer readable storage medium. The temperature control method is applied to the wire controller, the wire controller comprises a screen module and a controller, and the temperature control method comprises the steps that the maximum temperature rise of the controller within first preset time is acquired; in response to the fact that the maximum temperature rise is larger than a first temperature preset threshold value, an operation function corresponding to the maximum temperature rise is recorded into a function set, the controller is controlled to close background applications in sequence according to the unused time from long to short, and the brightness of the screen module is reduced to the minimum; and in response to the fact that the maximum temperature rise is smaller than a second temperature preset threshold value, the controller is controlled to sequentially recover the background applications according to the reverse order of closing the background applications, the brightness of the screen module is recovered, and the second temperature preset threshold value is smaller than the first temperature preset threshold value. According to the temperature control method, the influence of high temperature on the performance of the controller can be reduced, so that the service life of the wire controller is prolonged.

The invention relates to the technical field of energy storage, and discloses a thermal management method of an energy storage system, the energy storage system and electric equipment. The thermal management method of the energy storage system comprises the steps that the temperature of each battery cell in a battery pack is detected, and if the temperature of each battery cell is lower than a preset temperature threshold value, a fluid circulation loop is controlled to convey a working medium to a temperature control structure so as to heat the battery cells; judging whether the temperature difference between different positions of the battery cell exceeds a preset temperature difference threshold value or not, and if the maximum temperature difference between the two positions of the battery cell exceeds the preset temperature difference threshold value, controlling the fluid circulation loop to stop conveying the working medium to the temperature control structure until the maximum temperature difference between the two positions of the battery cell is lower than the preset temperature difference threshold value; and then the fluid circulation loop is controlled to convey the working medium to the temperature control structure again. According to the thermal management method of the energy storage system, the energy storage system and the electric equipment provided by the invention, the influence on the use performance of the battery cell can be avoided.

A method and control arrangement for controlling operation of a fan in a cooling system of a vehicle, wherein operation of the fan is controlled based on a temperature of a coolant in the coolant system meeting a set-temperature of the coolant. The method comprises monitoring an engine oil temperature of an engine of the vehicle during a plurality of driving cycles with the vehicle; and adjusting the set-temperature of the coolant based on a measure indicative of a plurality of maximum temperatures of the engine oil during the plurality of driving cycles.

The utility model discloses a thermal management device of an energy storage system, which is characterized in that a liquid storage tank is connected with a liquid cooling battery pack, a liquid cooling host is connected with the liquid storage tank, and a controller is connected with the liquid storage tank and the liquid cooling host. The controller controls the liquid storage tank to cool the liquid-cooled battery pack when the external temperature is within a first temperature range, recovers the post-cooling liquid generated after cooling to the liquid storage tank to store to realize heat storage when the external temperature is within a second temperature range, and recovers the post-cooling liquid to the liquid storage tank to store to realize heat storage when the external temperature is within a third temperature range in a valley electricity stage. The liquid cooling host is controlled to refrigerate cooling liquid in a liquid storage tank to achieve cold storage, heating is conducted to achieve heat storage when the external temperature is within a fourth temperature range, and the minimum temperature value of the first temperature range is larger than the maximum temperature value of the second temperature range. The minimum temperature value of the third temperature range is larger than the maximum temperature value of the fourth temperature range, energy consumption and operation cost are reduced, power utilization peaks are staggered, and power utilization cost is reduced.