Air conditioner temperature control method, device, medium and air conditioner

Abstract

The application discloses an air conditioner temperature control method, device, medium and air conditioner, and the target heat exchange load of a target space and the net heat exchange power of an air conditioner are acquired first, the stable temperature reaching time length of an adaptive working condition is calculated, the temperature track is planned according to the time length, the temperature change rate in the later temperature adjusting period is much lower than that in the early period, and finally the air conditioner is driven to operate according to the track. The application sets the total temperature reaching time length reasonably by combining the actual heat exchange condition of the space, adopts the segmented temperature change curve planning of fast in the early stage and slow in the later stage, avoids the full-load high-speed temperature adjusting of the air conditioner all the way, effectively improves the defects that the traditional air conditioner fast temperature adjusting easily causes the room temperature to change too fast and the temperature overshoot to break the set value, makes the indoor temperature stably approach the target temperature, and reduces the large temperature fluctuation.

Description

Technical Field

[0001] This invention relates to the field of air conditioning technology, and in particular to an air conditioning temperature control method, device, medium, and air conditioner. Background Technology

[0002] In traditional air conditioning control logic, the compressor often runs at full load at the highest frequency to quickly approach the set temperature.

[0003] While this control method can quickly adjust the temperature, it can easily lead to excessive changes in indoor temperature and exceed the set value, causing large fluctuations in room temperature. This can result in users feeling hot and cold, seriously affecting their comfort. Summary of the Invention

[0004] Therefore, it is necessary to provide air conditioning temperature control methods, devices, media, and air conditioners to solve the problem that although existing control methods can quickly adjust the temperature, they are prone to causing excessive changes in indoor temperature and exceeding the set value.

[0005] In a first aspect, embodiments of this application provide an air conditioning temperature control method, wherein the air conditioner is installed in a target space, and the method includes: The target heat exchange load of the target space and the net heat exchange power of the air conditioner are obtained; wherein, the target heat exchange load represents the total heat exchange required to adjust the target space from the current temperature to the set temperature, and the net heat exchange power represents the heat exchange output by the air conditioner per unit time for adjusting the current temperature. Based on the target heat exchange load and the net heat exchange power, the time to reach the stable temperature is determined; wherein, the time to reach the stable temperature represents the theoretical operating time for the target space to be smoothly adjusted from the current temperature to the set temperature; Temperature planning is performed on the stable temperature reaching time to obtain a temperature trajectory; wherein, the temperature trajectory includes the ideal temperature at different planned times within the stable temperature reaching time, and the rate of change of the ideal temperature in the tail period of the stable temperature reaching time is less than the rate of change in the non-tail period of the stable temperature reaching time. The operation of the air conditioner is controlled based on the temperature trajectory.

[0006] In some embodiments of this application, the net heat exchange power is obtained in the following ways: Obtain the current heat production load; wherein, the current heat production load represents the heat generated per unit time within the target space; Based on the current outdoor temperature, the rated heat exchange power is adjusted according to the operating conditions to determine the current maximum heat exchange power; The net heat exchange power is determined based on the current maximum heat exchange power and the current heat generation load.

[0007] In some embodiments of this application, the step of adjusting the rated heat exchange power based on the current outdoor temperature to determine the current maximum heat exchange power includes: Multiply the attenuation coefficient by the difference between the current outdoor temperature and the transition temperature to obtain the first calculated value; If the first calculated value is negative, then the first coefficient is determined as the working condition adjustment coefficient; If the first calculated value is non-negative, the difference between the first coefficient and the first calculated value is determined as the operating condition adjustment coefficient. Multiply the operating condition adjustment coefficient by the rated heat exchange power to obtain the current maximum heat exchange power.

[0008] In some embodiments of this application, determining the net heat exchange power based on the current maximum heat exchange power and the current heat generation load includes: The current heat load is adjusted for building heat storage to obtain the start-up heat load; wherein the start-up heat load represents the amount of heat accumulated in the target space per unit time during the start-up phase of the air conditioner; The net heat exchange power is obtained by subtracting the start-up heat load from the current maximum heat exchange power.

[0009] In some embodiments of this application, determining the stable temperature attainment time based on the target heat transfer load and the net heat transfer power includes: Divide the target heat exchange load by the net heat exchange power to obtain the lower limit of the time to reach the temperature; wherein, the lower limit of the time to reach the temperature represents the shortest theoretical running time to adjust the target space from the current temperature to the set temperature; Multiply the lower limit of the temperature reaching time by the second coefficient to obtain the stable temperature reaching time; wherein, the second coefficient is >1.

[0010] In some embodiments of this application, the step of performing temperature planning on the stable temperature attainment time to obtain a temperature trajectory includes: The time-varying time constant is determined based on the initial time constant, the time-varying coefficient, and the stable temperature reaching time; wherein the time-varying time constant gradually increases as the planning time progresses, and the initial time constant serves as the boundary constraint of the time-varying time constant; Using the current temperature, the set temperature, the temperature difference correction coefficient, and the time-varying time constant as parameters, an improved first-order exponential decay curve is used for temperature planning to obtain a temperature trajectory. The temperature trajectory includes the ideal temperature at different planning moments within the stable temperature-reaching time. The gradually increasing time-varying time constant makes the rate of change of the ideal temperature in the tail period of the stable temperature-reaching time less than the rate of change in the non-tail period of the stable temperature-reaching time.

[0011] In some embodiments of this application, controlling the operation of the air conditioner based on the temperature trajectory includes: Obtain the ideal rate of change of the ideal temperature at the current planning moment in the temperature trajectory; A heat balance calculation is performed on the ideal rate of change to obtain the ideal heat exchange at the current planning time; The ideal power corresponding to the ideal heat exchange is determined by a first mapping relationship; wherein, the first mapping relationship characterizes the mapping relationship between the air conditioner's heat exchange and the compressor power; The compressor of the air conditioner is controlled based on the ideal power at the current planned time.

[0012] In some embodiments of this application, controlling the operation of the air conditioner's compressor at the current planned time based on the ideal power includes: Obtain the current rate of change of the current temperature; Subtracting the current rate of change from the ideal rate of change yields the rate of change deviation; Based on the deviation in the rate of change, feedback control calculations are performed to obtain the power adjustment amount; The power adjustment amount is added to the ideal power to obtain the target power; The compressor of the air conditioner is controlled to operate at the target power at the current planned time.

[0013] Secondly, this application also provides an air conditioning temperature control device, wherein the air conditioner is installed in a target space, and the air conditioning temperature control device includes: The data acquisition module is used to acquire the target heat exchange load of the target space and the net heat exchange power of the air conditioner; wherein, the target heat exchange load represents the total heat exchange required to adjust the target space from the current temperature to the set temperature, and the net heat exchange power represents the heat exchange output by the air conditioner per unit time for adjusting the current temperature. The duration determination module is used to determine the stable temperature reaching time based on the target heat exchange load and the net heat exchange power; wherein, the stable temperature reaching time characterizes the theoretical running time for the target space to be smoothly adjusted from the current temperature to the set temperature; A temperature planning module is used to plan the temperature for the stable temperature reaching time to obtain a temperature trajectory; wherein, the temperature trajectory includes the ideal temperature at different planned times within the stable temperature reaching time, and the rate of change of the ideal temperature in the tail period of the stable temperature reaching time is less than the rate of change in the non-tail period of the stable temperature reaching time. A temperature control module is used to control the operation of the air conditioner based on the temperature trajectory.

[0014] Thirdly, this application also provides an air conditioner, which includes a memory, a processor, and a computer program stored in the memory and executable on the processor. When the computer program is executed by the processor, it implements the steps in the above-described air conditioning temperature control method.

[0015] Fourthly, embodiments of this application also provide a computer-readable storage medium storing a computer program, which, when executed by a processor, implements the steps in the above-described air conditioning temperature control method.

[0016] Fifthly, embodiments of this application also provide a computer program product or computer program, which includes computer instructions stored in a computer-readable storage medium. A processor of a computer device reads the computer instructions from the computer-readable storage medium and executes the computer instructions, causing the computer device to perform the methods provided in the various optional implementations described in embodiments of this application.

[0017] This invention provides an air conditioning temperature control method, device, medium, and air conditioner. It first obtains the target heat exchange load of the target space and the net heat exchange power of the air conditioner, then calculates the stable temperature-reaching time for suitable operating conditions. Next, it plans a temperature trajectory based on this time, ensuring that the temperature change rate in the later stages of temperature adjustment is much lower than in the earlier stages. Finally, it drives the air conditioner to operate according to this trajectory. This invention, by rationally setting the total temperature-reaching time in conjunction with the actual heat exchange conditions of the space and employing a segmented temperature change curve planning that is fast at the beginning and slow at the end, avoids the air conditioner's rapid temperature adjustment at full load throughout the entire process. This effectively improves upon the shortcomings of traditional air conditioners, which easily cause excessive room temperature changes and temperature overshoot exceeding the set value due to rapid temperature adjustment, allowing the indoor temperature to steadily approach the target temperature and reducing large temperature fluctuations. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] in: Figure 1 This is a flowchart illustrating the air conditioning temperature control method. Figure 2 A schematic diagram of the process for obtaining net heat exchange power; Figure 3 This is a schematic diagram of an air conditioning temperature control device. Figure 4 This is a structural block diagram of an air conditioner. Detailed Implementation

[0020] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0021] The terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish different objects, not to describe a specific order. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or apparatus that includes a series of steps or units is not limited to the listed steps or units, but may optionally include steps or units not listed, or may optionally include other steps or units inherent to these processes, methods, products, or apparatuses.

[0022] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0023] This invention provides an air conditioning temperature control method, apparatus, medium, and air conditioner. In some embodiments of this application, the provided air conditioning temperature control method can be applied to an air conditioner. Specifically, the air conditioner can be applied to different scenarios, including but not limited to industrial air conditioners or household air conditioners. In some embodiments of this application, the air conditioner can be a single unit, such as a cabinet air conditioner or a wall-mounted air conditioner; in some embodiments of this application, the air conditioner can also be a central air conditioning system composed of multiple air conditioner units, such as a multi-split air conditioner, an air-cooled heat pump system, or an air conditioning system with heat recovery function.

[0024] Please see Figure 1 , Figure 1 This is a flowchart illustrating an air conditioning temperature control method provided in an embodiment of this application. Although the logical sequence is shown in the flowchart, in some cases, the steps shown or described may be performed in a different order than that shown in the accompanying drawings. The air conditioner is located within a target space and is the object of the air conditioning temperature control. This target space includes, but is not limited to, bedrooms, living rooms, shopping malls, and conference rooms, etc., and is not limited thereto.

[0025] Specifically, the flow of this air conditioning temperature control method includes S101-S104, as follows: S101, obtain the target heat exchange load of the target space and the net heat exchange power of the air conditioner.

[0026] Among them, the target heat exchange load represents the total heat exchange required to adjust the target space from the current temperature to the set temperature, and the net heat exchange power represents the heat exchange output by the air conditioner per unit time for adjusting the current temperature.

[0027] Optionally, the temperature difference in the target space can be calculated first. , After calculating the temperature difference, the operating conditions are divided into multiple intervals based on the temperature difference value, and corresponding control strategies are matched for different intervals: when the temperature difference is large, the temperature adjustment speed is accelerated first, and when the temperature difference is small, the constant temperature stable control is switched, thereby simplifying the judgment logic of the whole machine in the intermediate state. Among them, the specific classification rules are as follows: (1) When When the indoor real-time temperature and the set temperature are very close, there is no need to significantly adjust the cooling or heating capacity. The unit can directly switch to the temperature maintenance stage, maintaining low power operation to offset the small amount of continuous heat generated in the room, avoiding frequent compressor start-stop causing small temperature fluctuations; (2) when At that time, there is only a small temperature difference in the room, and the unit enters the standard control mode, using the conventional compressor operating frequency to complete the small temperature adjustment, taking into account both temperature control stability and basic response speed; (3) when When the indoor temperature difference is large, the unit enters the enhanced control mode, which increases the upper limit of the compressor operating frequency by a fixed ratio, increases the air conditioning heat exchange output power, and accelerates the reduction of the temperature difference between the current temperature and the user-set temperature. At the same time, it is combined with the constraint logic of the compressor operating frequency to prevent the temperature overshoot caused by the excessively fast heating or cooling rate; (4) when When the indoor temperature difference is significant, the complete graded control process is activated directly, strictly following the entire process from S101 to S104. It relies on a temperature change curve that is fast at the beginning and slows down later to gradually approach the set temperature, thus suppressing the problem of room temperature exceeding the set value at its source. Optionally, it can be set to a=1, b=2, c=3, or other values.

[0028] Optionally, a query table is pre-stored before delivery. The table stores the target heat exchange load corresponding to the space area, the temperature difference between inside and outside, and the insulation level of the house type, as well as the net heat exchange power corresponding to the outdoor temperature and the compressor operating level. During operation, the above-mentioned required parameters are collected, and the target heat exchange load and net heat exchange power are quickly obtained by matching the preset parameters in the table that correspond to the current operating conditions.

[0029] Alternatively, collect three types of data: the overall heat capacity parameter of the target space, the current temperature of the target space, and the set temperature. Calculate the target heat transfer load using the following formula:

[0030] In the above formula, Indicates the target heat transfer load, in joules; Represents the overall heat capacity of the target space, in units of or The values ​​are calculated by comprehensively considering the target space volume, air specific heat capacity, and the heat storage characteristics of the walls and furniture. Indicates the current temperature of the target space; This indicates the set temperature of the target space.

[0031] In some embodiments of this application, such as Figure 2 As shown, the methods for obtaining the net heat exchange power of S101 include S1011-S1013, as detailed below: S1011, obtain the current heat load.

[0032] The current heat load represents the amount of heat generated per unit time within the current target space.

[0033] Optionally, the formula for calculating the current heat load is:

[0034] In the above formula, Indicates the current heat load; Represents the overall heat transfer coefficient of the target space enclosure structure, in units of The value is determined by the insulation materials used in the walls, doors, windows, and roof. It represents the total heat exchange area of ​​the target space's building envelope, including the area of ​​all areas in contact with outdoor air, such as exterior walls, windows, and entrance doors; It represents the real-time temperature difference between indoors and outdoors, which is obtained by comparing the current temperature of the target space with the outdoor ambient temperature. This represents the inherent heat production power within the target space, encompassing the heat released per unit time from various heat sources such as indoor occupants, lighting fixtures, and computer appliances. It involves calculating the real-time number of occupants and the number of lights and appliances turned on within the target space, multiplying the quantity of each heat source by its corresponding baseline heat production value, and then summing these values ​​to obtain the final inherent heat production power within the space. .

[0035] S1012, based on the current outdoor temperature, performs operating condition correction on the rated heat exchange power to determine the current maximum heat exchange power.

[0036] Optionally, in cooling mode, when the outdoor temperature is less than the temperature threshold, the rated heat exchange power specified by the air conditioner at the factory is directly used as the current maximum heat exchange power; when the outdoor temperature is greater than the temperature threshold, the high outdoor temperature will cause the air conditioner's heat exchange efficiency to decrease, so the rated heat exchange power needs to be multiplied by the operating condition attenuation coefficient, and the result is used as the current maximum heat exchange power, where the operating condition attenuation coefficient is a decimal between 0 and 1.

[0037] In some embodiments of this application, step S1012, which corrects the rated heat exchange power based on the current outdoor temperature to determine the current maximum heat exchange power, includes: multiplying the attenuation coefficient by the difference between the current outdoor temperature and the transition temperature to obtain a first calculated value. If the first calculated value is negative, the first coefficient is determined as the operating condition adjustment coefficient; if the first calculated value is non-negative, the difference between the first coefficient and the first calculated value is determined as the operating condition adjustment coefficient; and multiplying the operating condition adjustment coefficient by the rated heat exchange power to obtain the current maximum heat exchange power.

[0038] Optionally, the formula for calculating the current maximum heat exchange power is:

[0039] In the above formula, This indicates the current maximum heat exchange power, and represents the limit of heat exchange capacity that the unit can stably output after outdoor temperature correction. This indicates the rated heat exchange power, which is the standard operating condition heat exchange output value specified on the equipment nameplate. This represents the first coefficient, which can specifically be the value 1; This represents the attenuation coefficient, used to characterize the rate at which the outdoor temperature deviates from the inflection point. The rate of decrease in heat exchange capacity; This indicates the current outdoor temperature, which is collected in real time. The transition temperature is the critical temperature at which the heat exchange capacity begins to decrease as the outdoor temperature rises. Corresponding to the operating condition adjustment coefficient in the previous process; To calculate the minimum value, the upper limit of the constraint condition adjustment coefficient is: To avoid the heat exchange power exceeding the rated heat exchange power after correction.

[0040] Understandably, the rated heat exchange capacity indicated on the equipment nameplate is only determined under standard rated temperature and humidity conditions. In actual daily operation, the unit's heating and cooling heat exchange output capacity will fluctuate significantly with the outdoor ambient temperature. The higher the outdoor temperature, the greater the difficulty for the outdoor unit to dissipate heat, and the lower the upper limit of heat exchange capacity that the unit can release. When the outdoor temperature is below the transition temperature, The calculation result is negative. Both are negative numbers. The value will be greater than The minimum value is used to lock the operating condition adjustment coefficient equal to... At this point, the current maximum heat exchange power remains consistent with the rated heat exchange power, corresponding to a scenario where the outdoor unit has good heat dissipation conditions and the unit can output at full load; when the outdoor temperature is higher than or equal to the transition temperature, The calculation result is a non-negative number. The value will be less than or equal to The operating condition adjustment coefficient is reduced synchronously, and the rated heat exchange power is multiplied by the reduced coefficient to obtain the current maximum heat exchange power adapted to the high temperature outdoor unit operating conditions, thereby fully restoring the heat exchange attenuation characteristics caused by outdoor high temperature.

[0041] For example, a set of reference parameters is set for example calculations, wherein the rated cooling capacity Pick ; attenuation coefficient Pick This indicates that the outdoor temperature exceeds the transition temperature. The unit's cooling capacity decreased. Transition temperature Set as The outdoor reference temperature corresponds to the national standard cooling rated operating condition; when the outdoor temperature is lower than the transition temperature, it is based on... For example, substitute into the formula Calculated values Then through upper limit of function Ultimately, the current maximum heat exchange power and rated cooling capacity remain consistent. This logic remains unchanged, ensuring that the unit operates at full load when outdoor heat dissipation conditions are better than rated operating conditions, while avoiding unreasonable excessive cooling capacity beyond the compressor's physical limits through numerical capping. When the outdoor temperature is higher than the transition temperature, [the following applies]. For example, substituting into the formula, the value of the attenuation term can be calculated as follows: ,through The current effective cooling capacity is obtained by multiplying the function value by the rated cooling capacity. .

[0042] S1013, determine the net heat exchange power based on the current maximum heat exchange power and the current heat generation load.

[0043] Optionally, use the current maximum heat exchange power. Subtract the current heat load The difference is the net heat exchange power. The corresponding calculation formula can be written as: .

[0044] In some embodiments of this application, determining the net heat exchange power in step S1013 based on the current maximum heat exchange power and the current heat production load includes: performing a building heat storage correction on the current heat production load to obtain the startup heat load; and subtracting the startup heat load from the current maximum heat exchange power to obtain the net heat exchange power.

[0045] Among them, the start-up heat load characterizes the amount of heat accumulated in the target space per unit time during the start-up phase of the air conditioner.

[0046] Optionally, at any time t after the air conditioner starts, the calculation formula used to complete the building heat storage correction is:

[0047] In the above formula, Indicates time The corresponding actual heat load; This indicates the starting heat load after building heat storage correction; The thermal comfort correction factor is used to characterize the reasonable temperature deviation that is allowed between the human body's perceived comfortable temperature and the user-set temperature.

[0048] The above formula can dynamically compensate for the slow release of heat stored in walls and furniture by incorporating indoor and outdoor temperature differences and temperature comfort deviations, thus offsetting the additional heat interference caused by building heat storage in temperature regulation. It can collect data at any time during operation. The starting heat load is derived by reverse engineering from the actual heat load and various temperature parameters. The formula for calculating the final net heat transfer power is written as follows:

[0049] In the above formula, Indicates net heat exchange capacity. This indicates the current maximum heat exchange capacity after correction for outdoor temperature conditions.

[0050] It is understandable that after the air conditioner is turned on, the heat stored inside the walls and furniture will be continuously released outwards. If the current heat load without heat storage compensation is used directly for calculation, the overall heat production of the room will be underestimated, resulting in an overestimation of the net heat exchange power. This can easily lead to room temperature overshoot and exceeding the set temperature during subsequent temperature control. The above embodiment uses the building heat storage correction formula to derive the starting heat load, which can fully cover all heat sources in the room at the beginning. The net heat exchange power is obtained by subtracting the starting heat load from the unit's current maximum heat exchange power. The net heat exchange power obtained at this time is a conservative value. Based on this, the time to reach a stable temperature and the planned temperature trajectory can match the actual changes in the room's thermal environment at the beginning, reducing the risk of temperature overshoot from the source.

[0051] S102, based on the target heat exchange load and net heat exchange power, determines the time to reach stable temperature.

[0052] Among them, the steady temperature reaching time characterizes the theoretical running time for the target space to be smoothly adjusted from the current temperature to the set temperature.

[0053] In some embodiments of this application, S102, determining the stable temperature-reaching time based on the target heat exchange load and net heat exchange power, includes: dividing the target heat exchange load by the net heat exchange power to obtain a lower limit of the temperature-reaching time; and multiplying the lower limit of the temperature-reaching time by a second coefficient to obtain the stable temperature-reaching time.

[0054] Among them, the lower limit of the temperature-reaching time represents the shortest theoretical operating time to adjust the target space from the current temperature to the set temperature. The second coefficient is greater than 1.

[0055] Optionally, the formula for calculating the lower limit of the time to reach the desired temperature under the current operating conditions is as follows:

[0056] In the above formula, This indicates the lower limit of the time required to reach the target temperature. Indicates the target heat exchange load. This represents the net heat transfer power. A second coefficient is introduced. Then, the formula for calculating the time to reach a stable temperature is:

[0057] In the above formula, Indicates the time required for the temperature to reach a stable temperature. It is the second coefficient, and its value is always greater than 1.

[0058] Optionally, the second coefficient can be a factory-preset fixed constant with a value always greater than 1, such as 2, to adapt to the general temperature control scenario of conventional apartment types, which can be directly called without real-time calculation; or it can be a variable that is dynamically adjusted in combination with the current indoor temperature difference and the target space insulation level. The larger the temperature difference and the weaker the space insulation performance, the higher the value of the second coefficient, so as to reserve more sufficient tail buffer time to match the stable temperature control requirements under different working conditions.

[0059] Understandably, the lower limit of the temperature-reaching time is only the ideal extreme temperature adjustment time. If the temperature change curve is planned directly based on this time, the air conditioner will maintain high heat exchange output throughout the process. There is no buffer deceleration phase when approaching the set temperature, which is very easy to cause temperature overshoot. The second coefficient will lengthen the complete temperature adjustment cycle as a whole, reserving an adjustment range at the end of the total time to slowly approach the set temperature. Subsequently, based on the stable temperature-reaching time, a temperature trajectory that is fast at the beginning and slow at the end is generated, which can gradually slow down the heat exchange rate when approaching the target temperature. In the time dimension, it can suppress the problem of large fluctuations in room temperature and overshooting the set temperature from the root.

[0060] Alternatively, the time to reach stable temperature can be calculated by summing the time durations: first, divide the target heat exchange load by the net heat exchange power to calculate the ideal shortest time to reach temperature, then add the buffer compensation time; the sum of the two is the stable time to reach temperature. The buffer compensation time can be set to a factory-preset fixed constant to suit air conditioning models with simple structures and limited computing power; alternatively, a mapping system can be constructed between real-time operating parameters such as the current indoor-outdoor temperature difference and the target space area and the buffer compensation time. For scenarios with larger temperature differences and larger spaces, a longer buffer compensation time can be automatically matched to provide sufficient deceleration buffer period for the stage where the temperature approaches the set value.

[0061] S103 performs temperature planning on the time to achieve stable temperature to obtain a temperature trajectory.

[0062] The temperature trajectory includes the ideal temperature at different planned times within the stable temperature-reaching duration. The rate of change of the ideal temperature in the tail period of the stable temperature-reaching duration is less than the rate of change in the non-tail period of the stable temperature-reaching duration.

[0063] Optionally, the complete stable temperature reaching time is first divided into two time intervals according to a set ratio. The first interval is the non-tail time interval, and the second interval is the tail time interval. Independent constant temperature change slopes are assigned to the two intervals respectively. A larger slope is assigned to the non-tail time interval, corresponding to a faster temperature adjustment speed, and a smaller slope is assigned to the tail time interval, corresponding to a gentler approach speed. The current temperature of the target space is used as the starting point of the entire trajectory, and the set temperature is used as the trajectory endpoint. The ideal temperature at each moment is calculated by combining the proportion of the two time intervals and the corresponding slopes. The two linear curves are then spliced ​​together to obtain the complete temperature trajectory.

[0064] In some embodiments of this application, S103 involves temperature planning based on the stable temperature reaching time to obtain a temperature trajectory, including: determining a time-varying time constant based on an initial time constant, a time-varying coefficient, and a stable temperature reaching time. Temperature planning is performed using an improved first-order exponential decay curve with the current temperature, a set temperature, a temperature difference correction coefficient, and the time-varying time constant as parameters to obtain the temperature trajectory.

[0065] The initial time constant represents the initial reference parameter used to calculate the time-varying time constant; the time-varying coefficient represents the coefficient used to control the rate at which the time-varying time constant decays with running time, and its value directly determines the degree of temperature slowdown in the tail period; the time-varying time constant gradually increases as the planned time progresses, and the initial time constant serves as the boundary constraint for the time-varying time constant. The temperature difference correction coefficient is a coefficient used to adjust the convergence characteristics of the exponential curve based on the difference between the current temperature and the set temperature, adapting to different temperature difference conditions. The temperature trajectory includes the ideal temperature at different planned times within the stable temperature-reaching duration. The gradually increasing time-varying time constant ensures that the rate of change of the ideal temperature in the tail period of the stable temperature-reaching duration is less than the rate of change in the non-tail period of the stable temperature-reaching duration.

[0066] Optionally, an improved first-order exponential decay curve is used as the ideal temperature change trajectory throughout the entire process, and the corresponding two sets of mathematical expressions are as follows:

[0067]

[0068] In the above formula, Indicates time The corresponding time-varying time constant; Indicates the initial time constant; Represents the time-varying coefficients; This indicates the time required to reach a stable temperature, defining the upper limit of the complete temperature adjustment cycle for the entire curve. Indicates planning time The corresponding ideal temperature; Indicates the target space set temperature; Indicates the current temperature of the target space; This represents the temperature difference correction factor; Indicates the current planning time.

[0069] Understandably, the above formula uses a time-varying time constant to improve the first-order exponential curve to generate the ideal temperature. Time-varying time constant As it increases linearly and continuously with runtime, it will continuously suppress the exponential term. The decay rate naturally achieves a temperature control trajectory of rapid temperature change rate in the early stage and gradual temperature change rate at the end, thereby avoiding temperature overshoot caused by the air conditioner operating at full load throughout the entire process. Specifically, for different operating conditions: Refrigeration condition (when) (Time): Temperature difference term at this time It is a positive value. As runtime increases... The increase, As it gradually increases, the exponential term... The decay rate gradually decreases. This means that in the initial stage of cooling, the system will reduce the ideal temperature target value at a relatively fast rate. It quickly eliminates most of the heat load; and as the temperature approaches the set value... The rate of change automatically slows down to achieve a smooth transition, preventing excessively cold room temperature or frequent equipment start-ups and shutdowns caused by rapid cooling.

[0070] Heating condition (when) (Time): Temperature difference term at this time It is a negative value. Under the same mechanism, The increase in temperature causes the heating process to exhibit a "fast at first, slow later" characteristic. In the initial stage of heating, the ideal temperature is... It will rise rapidly, enhancing indoor thermal comfort at the fastest speed; when approaching the target temperature At this time, the heating rate slows down. This gradual approach strategy can effectively suppress temperature overshoot caused by thermal inertia (i.e., prevent the room temperature from rising too high) and ensure that it is eventually maintained smoothly near the set temperature.

[0071] S104 controls the operation of the air conditioner based on temperature trajectory.

[0072] Optionally, the stable temperature reaching time of the temperature trajectory is first divided into two time intervals according to a set ratio. During the non-tail time period, the air conditioner is controlled to run at a high level to match the faster temperature change rate of this stage. After entering the tail time period, the air conditioner operation level is reduced to slow down the temperature change rate. If the actual room temperature deviates from the ideal temperature of the trajectory by more than a℃, the operation level is adjusted across levels. If the deviation is less than b℃, the current level is maintained until the temperature trajectory ends.

[0073] In some embodiments of this application, S104, controlling the operation of the air conditioner based on a temperature trajectory, includes: acquiring the ideal rate of change of the ideal temperature at the current planning time in the temperature trajectory; performing a heat balance calculation on the ideal rate of change to obtain the ideal heat exchange at the current planning time; determining the ideal power corresponding to the ideal heat exchange through a first mapping relationship; and controlling the operation of the air conditioner's compressor at the current planning time based on the ideal power.

[0074] The first mapping relationship represents the mapping relationship between the heat exchange capacity of the air conditioner and the power of the compressor.

[0075] Optionally, first read the temperature trajectory data and extract the ideal temperature change rate corresponding to the current planning moment. Based on the fundamental laws of thermodynamics, establish the heat balance relationship within the target space, expressed as:

[0076] By transforming and deriving this relationship, we obtain the formula for calculating the theoretical ideal heat exchange required for the feedforward control loop, expressed as:

[0077] In the above formula, For ideal heat exchange; Let be the heat load at time t; The overall equivalent heat capacity of the target space; The ideal rate of temperature change is extracted from the temperature trajectory. The ideal heat transfer rate is calculated using a formula. Then, the preset first mapping relationship is retrieved to obtain the ideal compressor power that matches the current operating conditions. The calculated ideal power of the compressor As a reference output value for the feedforward control loop, this reference output value can be directly used as the target power of the air conditioning compressor at the current planned moment for regulation.

[0078] In some embodiments of this application, controlling the operation of an air conditioner compressor at the current planned time based on ideal power includes: obtaining the current rate of change of the current temperature; subtracting the current rate of change from the ideal rate of change to obtain the rate of change deviation; performing feedback control calculations based on the rate of change deviation to obtain a power adjustment amount; adding the power adjustment amount to the ideal power to obtain the target power; and controlling the air conditioner compressor to operate at the target power at the current planned time.

[0079] Optionally, a fixed sampling period Δt is set, with an industry standard of 10s. This period can be flexibly adjusted according to the model and temperature control accuracy requirements. The actual indoor temperature T of the target space is collected in real time at each sampling node, and the target power is calculated step by step. The complete derivation process is as follows: First, calculate the current rate of change at the current moment:

[0080] In the above formula, k represents the current actual rate of temperature change; This indicates the current temperature collected at the current sampling time; This indicates the indoor temperature retained from the previous sampling period; This indicates the preset sampling period duration.

[0081] Next, calculate the ideal rate of change of temperature corresponding to the temperature trajectory at the current moment:

[0082] In the above formula, This indicates the ideal rate of temperature change preset for the trajectory at the current planning time. This represents the ideal temperature within the temperature trajectory at the current moment; This represents the ideal temperature of the trajectory corresponding to the previous sampling period.

[0083] Next, solve for the rate deviation between the actual temperature change and the ideal temperature change.

[0084] In the above formula, It indicates the deviation of the rate of change. The positive or negative value can intuitively reflect whether the actual cooling / heating rate in the room is faster or slower than the preset trajectory rate.

[0085] Based on the rate of change deviation, a PID control algorithm is then used for feedback control calculations to determine the compressor power correction. :

[0086] In the above formula, Indicates the power adjustment amount; This represents the proportional adjustment coefficient, used to quickly compensate for instantaneous rate deviations; This represents the integral adjustment coefficient, used to eliminate the steady-state rate error accumulated over a long period of time; This represents the differential adjustment coefficient, used to predict the trend of rate deviation changes and suppress adjustment oscillations. This represents the rate deviation from the previous sampling period. The sampling period.

[0087] Finally, the ideal power calculated by the feedforward is added to the power adjustment to obtain the temporary target power without boundary constraints:

[0088] In the above formula, This represents the ideal power output of the feedforward at the current planning moment; Indicates the target power.

[0089] In addition, upper and lower limits are applied to the temporary target power to constrain the final target power within the operating range allowed by the unit's hardware.

[0090] In the above formula, This indicates the target power after limiting. This indicates the minimum stable power at which the compressor is allowed to operate; This indicates the compressor's rated maximum operating power. By taking the maximum and minimum values, the calculated target power is avoided from exceeding the compressor's hardware operating range, preventing abnormal operating conditions such as equipment overload and low-frequency shutdown protection. Finally, the air conditioning compressor is controlled to continuously operate at this target power at the current planned time.

[0091] Optionally, when the current temperature has been running continuously for a period of time and has stabilized within the range of ±d℃ of the set temperature, the control is considered to end, and the system is deemed to enter the normal temperature maintenance control logic. Optionally, d can be specifically set to 0.3, or other values.

[0092] The above embodiment first obtains the target heat exchange load and net heat exchange power of the air conditioner in the target space, and then calculates the stable temperature reaching time for the suitable operating conditions. A temperature trajectory is then planned based on this time, ensuring that the temperature change rate in the later stages of temperature adjustment is much lower than in the earlier stages. Finally, the air conditioner is driven to operate according to this trajectory. This embodiment, by rationally setting the total temperature reaching time in combination with the actual heat exchange conditions of the space and adopting a segmented temperature change curve planning that is fast at the beginning and slow at the end, avoids the air conditioner's rapid temperature adjustment at full load throughout the entire process. This effectively improves the shortcomings of traditional air conditioners, which are prone to causing excessive room temperature changes and temperature overshoot exceeding the set value due to rapid temperature adjustment, allowing the indoor temperature to steadily approach the target temperature and reducing large temperature fluctuations.

[0093] To facilitate better implementation of the air conditioning temperature control method of this application, this application also provides an air conditioning temperature control device based on the above-described air conditioning temperature control method. The meanings of the terms used are the same as in the above-described air conditioning temperature control method, and specific implementation details can be found in the descriptions of the method embodiments.

[0094] Please see Figure 3 , Figure 3 This is a schematic diagram of the structure of the air conditioning temperature control device provided in the embodiments of this application, which may specifically include: The data acquisition module 301 is used to acquire the target heat exchange load of the target space and the net heat exchange power of the air conditioner; wherein, the target heat exchange load represents the total heat exchange required to adjust the target space from the current temperature to the set temperature, and the net heat exchange power represents the heat exchange output by the air conditioner per unit time for adjusting the current temperature. The duration determination module 302 is used to determine the stable temperature reaching time based on the target heat exchange load and net heat exchange power; wherein, the stable temperature reaching time characterizes the theoretical running time for the target space to be smoothly adjusted from the current temperature to the set temperature; Temperature planning module 303 is used to plan the temperature for the steady temperature reaching time to obtain a temperature trajectory; wherein, the temperature trajectory includes the ideal temperature at different planned times within the steady temperature reaching time, and the rate of change of the ideal temperature in the tail period of the steady temperature reaching time is less than the rate of change in the non-tail period of the steady temperature reaching time. Temperature control module 304 is used to control the operation of the air conditioner based on temperature trajectory.

[0095] In the above embodiment, the data acquisition module 301 is used to first acquire the target heat exchange load and the net heat exchange power of the air conditioner in the target space. The duration determination module 302 is used to calculate the stable temperature reaching time for the suitable operating conditions based on the target heat exchange load and the net heat exchange power of the air conditioner. The temperature planning module 303 is used to plan a temperature trajectory for this duration, so that the temperature change rate in the later stage of temperature adjustment is much lower than that in the earlier stage. The temperature control module 304 is used to drive the air conditioner to operate according to the trajectory. This embodiment, by reasonably setting the total temperature reaching time in combination with the actual heat exchange conditions of the space and adopting a segmented temperature change curve planning that is fast at the beginning and slow at the end, avoids the air conditioner's rapid temperature adjustment at full load throughout the entire process. It effectively improves the defects of traditional air conditioners that are prone to excessive room temperature changes and temperature overshoot exceeding the set value when rapidly adjusting the temperature, allowing the indoor temperature to steadily approach the target temperature and reducing large temperature fluctuations.

[0096] In some embodiments of this application, the net heat exchange power is obtained in the following ways: Obtain the current heat load; where the current heat load represents the heat generated per unit time within the current target space; Based on the current outdoor temperature, the rated heat exchange power is adjusted according to the operating conditions to determine the current maximum heat exchange power; Determine the net heat exchange power based on the current maximum heat exchange power and the current heat generation load.

[0097] In some embodiments of this application, the data acquisition module 301 performs operating condition correction on the rated heat exchange power based on the current outdoor temperature to determine the current maximum heat exchange power, including: Multiply the attenuation coefficient by the difference between the current outdoor temperature and the transition temperature to obtain the first calculated value; If the first calculated value is negative, then the first coefficient is determined as the working condition adjustment coefficient; If the first calculated value is non-negative, the difference between the first coefficient and the first calculated value is determined as the operating condition adjustment coefficient. Multiply the operating condition adjustment factor by the rated heat exchange power to obtain the current maximum heat exchange power.

[0098] In some embodiments of this application, the data acquisition module 301 determines the net heat exchange power based on the current maximum heat exchange power and the current heat generation load, including: The current heat load is adjusted for building heat storage to obtain the start-up heat load; whereby the start-up heat load characterizes the amount of heat accumulated in the target space per unit time during the start-up phase of air conditioning. Subtract the startup heat load from the current maximum heat exchange power to obtain the net heat exchange power.

[0099] In some embodiments of this application, the duration determination module 302 determines the stable temperature reaching duration based on the target heat exchange load and net heat exchange power, including: Dividing the target heat exchange load by the net heat exchange power yields the lower limit of the time to reach the set temperature; where the lower limit of the time to reach the set temperature represents the shortest theoretical operating time to adjust the target space from the current temperature to the set temperature. Multiply the lower limit of the temperature reaching time by the second coefficient to obtain the stable temperature reaching time; where the second coefficient is greater than 1.

[0100] In some embodiments of this application, the temperature planning module 303 performs temperature planning on the stable temperature reaching time to obtain a temperature trajectory, including: The time-varying time constant is determined based on the initial time constant, the time-varying coefficient, and the stable temperature reaching time. The time-varying time constant gradually increases as the planning time progresses, and the initial time constant serves as the boundary constraint for the time-varying time constant. Using the current temperature, set temperature, temperature difference correction coefficient, and time-varying time constant as parameters, an improved first-order exponential decay curve is used for temperature planning to obtain the temperature trajectory. The temperature trajectory includes the ideal temperature at different planning moments within the stable temperature-reaching time. The gradually increasing time-varying time constant makes the rate of change of the ideal temperature in the tail of the stable temperature-reaching time less than the rate of change in the non-tail of the stable temperature-reaching time.

[0101] In some embodiments of this application, the temperature control module 304 controls the operation of the air conditioner based on a temperature trajectory, including: Obtain the ideal rate of change of the ideal temperature at the current planning moment in the temperature trajectory; Perform heat balance calculations on the ideal rate of change to obtain the ideal heat exchange at the current planning moment; The ideal power corresponding to the ideal heat exchange is determined by the first mapping relationship; wherein, the first mapping relationship characterizes the mapping relationship between the air conditioner's heat exchange and the compressor power; The operation of the air conditioner's compressor at the current planned moment is based on ideal power control.

[0102] In some embodiments of this application, the temperature control module 304 controls the operation of the air conditioner's compressor at the current planned moment based on ideal power, including: Get the current rate of change of the current temperature; Subtracting the current rate of change from the ideal rate of change yields the rate of change deviation; The power adjustment amount is obtained by performing feedback control calculations based on the rate of change deviation. Add the power adjustment amount to the ideal power to obtain the target power; Control the air conditioner compressor to operate at the target power at the current planned time.

[0103] In addition, this application also provides an air conditioner, such as Figure 4As shown, it illustrates the structural diagram of the air conditioner involved in this application, specifically: The air conditioner may include components such as a processor 401 with one or more processing cores, a memory 402 with one or more computer-readable storage media, a power supply 403, and an input unit 404. Those skilled in the art will understand that... Figure 4 The air conditioner structure shown does not constitute a limitation on the air conditioner and may include more or fewer components than shown, or combine certain components, or have different component arrangements. Wherein: The processor 401 is the control center of the air conditioner. It connects to various parts of the air conditioner via various interfaces and lines. By running or executing software programs and / or modules stored in the memory 402, and by calling data stored in the memory 402, it performs various functions and processes data, thereby providing overall monitoring of the air conditioner. Optionally, the processor 401 may include one or more processing cores; preferably, the processor 401 may integrate an application processor and a modem processor, wherein the application processor mainly handles the operating system, user interface, and applications, and the modem processor mainly handles wireless communication. It is understood that the modem processor may not be integrated into the processor 401.

[0104] The memory 402 can be used to store software programs and modules. The processor 401 executes various functional applications and data processing by running the software programs and modules stored in the memory 402. The memory 402 may mainly include a program storage area and a data storage area. The program storage area may store the operating system, at least one application program required for a function, etc.; the data storage area may store data created based on the use of the air conditioner, etc. In addition, the memory 402 may include high-speed random access memory, and may also include non-volatile memory, such as at least one disk storage device, flash memory device, or other volatile solid-state storage device. Accordingly, the memory 402 may also include a memory controller to provide the processor 401 with access to the memory 402.

[0105] The air conditioner also includes a power supply 403 that supplies power to the various components. Preferably, the power supply 403 can be logically connected to the processor 401 through a power management system, thereby enabling functions such as charging, discharging, and power consumption management through the power management system. The power supply 403 may also include one or more DC or AC power supplies, recharging systems, power equipment debugging circuits, power converters or inverters, power status indicators, and other arbitrary components.

[0106] The air conditioner may also include an input unit 404, which can be used to receive input digital or character information, and generate keyboard, mouse, joystick, optical or trackball signal inputs related to user settings and function control.

[0107] Although not shown, air conditioners may also include display units, etc., which will not be described in detail here. Specifically, in this embodiment, the processor 401 in the air conditioner loads the executable files corresponding to the processes of one or more application programs into the memory 402 according to the following instructions, and the processor 401 runs the application programs stored in the memory 402, thereby realizing the steps in any of the air conditioning temperature control methods provided in this application embodiment: obtaining the target heat exchange load of the target space and the net heat exchange power of the air conditioner; wherein, the target heat exchange load represents the total heat exchange corresponding to adjusting the target space from the current temperature to the set temperature, and the net heat exchange power represents the heat exchange output by the air conditioner per unit time for adjusting the current temperature; determining the stable temperature reaching time based on the target heat exchange load and the net heat exchange power; wherein, the stable temperature reaching time represents the theoretical running time for smoothly adjusting the target space from the current temperature to the set temperature; performing temperature planning on the stable temperature reaching time to obtain a temperature trajectory; wherein, the temperature trajectory includes the ideal temperature at different planning times within the stable temperature reaching time, and the rate of change of the ideal temperature in the tail time period of the stable temperature reaching time is less than the rate of change in the non-tail time period of the stable temperature reaching time; controlling the operation of the air conditioner based on the temperature trajectory.

[0108] The above embodiment first obtains the target heat exchange load and net heat exchange power of the air conditioner in the target space, and then calculates the stable temperature reaching time for the suitable operating conditions. A temperature trajectory is then planned based on this time, ensuring that the temperature change rate in the later stages of temperature adjustment is much lower than in the earlier stages. Finally, the air conditioner is driven to operate according to this trajectory. This invention, by rationally setting the total temperature reaching time in conjunction with the actual heat exchange conditions of the space and adopting a segmented temperature change curve planning that is fast at the beginning and slow at the end, avoids the air conditioner's rapid temperature adjustment at full load throughout the entire process. This effectively improves upon the shortcomings of traditional air conditioners, which are prone to excessive room temperature changes and temperature overshoot exceeding the set value due to rapid temperature adjustment, allowing the indoor temperature to steadily approach the target temperature and reducing large temperature fluctuations.

[0109] For details on the implementation of each of the above operations, please refer to the previous examples, which will not be repeated here.

[0110] Those skilled in the art will understand that all or part of the steps in the various methods of the above embodiments can be performed by instructions, or by instructions controlling related hardware. These instructions can be stored in a computer-readable storage medium and loaded and executed by a processor.

[0111] Therefore, this application provides a computer-readable storage medium storing a computer program that can be loaded by a processor to execute the steps in any of the air conditioning temperature control methods provided in this application.

[0112] For details on the implementation of each of the above operations, please refer to the previous examples, which will not be repeated here.

[0113] The computer-readable storage medium may include: read-only memory (ROM), random access memory (RAM), disk or optical disk, etc.

[0114] Since the instructions stored in the computer-readable storage medium can execute the steps of any of the air conditioning temperature control methods provided in this application, the beneficial effects that any of the air conditioning temperature control methods provided in this application can achieve can be realized, as detailed in the preceding embodiments, and will not be repeated here.

[0115] The above provides a detailed description of an air conditioning temperature control method, apparatus, air conditioner, and computer-readable storage medium provided in this application. Specific examples have been used to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only for the purpose of helping to understand the method and core ideas of the present invention. At the same time, for those skilled in the art, there will be changes in specific implementation methods and application scope based on the ideas of the present invention. Therefore, the content of this specification should not be construed as a limitation of the present invention.

Claims

1. An air conditioning temperature control method, characterized in that, The air conditioner is installed in the target space, and the method includes: The target heat exchange load of the target space and the net heat exchange power of the air conditioner are obtained; wherein, the target heat exchange load represents the total heat exchange required to adjust the target space from the current temperature to the set temperature, and the net heat exchange power represents the heat exchange output by the air conditioner per unit time for adjusting the current temperature. Based on the target heat exchange load and the net heat exchange power, the time to reach the stable temperature is determined; wherein, the time to reach the stable temperature represents the theoretical operating time for the target space to be smoothly adjusted from the current temperature to the set temperature; Temperature planning is performed on the stable temperature reaching time to obtain a temperature trajectory; wherein, the temperature trajectory includes the ideal temperature at different planned times within the stable temperature reaching time, and the rate of change of the ideal temperature in the tail period of the stable temperature reaching time is less than the rate of change in the non-tail period of the stable temperature reaching time. The operation of the air conditioner is controlled based on the temperature trajectory.

2. The method according to claim 1, characterized in that, The methods for obtaining the net heat exchange power include: Obtain the current heat production load; wherein, the current heat production load represents the heat generated per unit time within the target space; Based on the current outdoor temperature, the rated heat exchange power is adjusted according to the operating conditions to determine the current maximum heat exchange power; The net heat exchange power is determined based on the current maximum heat exchange power and the current heat generation load.

3. The method according to claim 2, characterized in that, The step of adjusting the rated heat exchange power based on the current outdoor temperature to determine the current maximum heat exchange power includes: Multiply the attenuation coefficient by the difference between the current outdoor temperature and the transition temperature to obtain the first calculated value; If the first calculated value is negative, then the first coefficient is determined as the working condition adjustment coefficient; If the first calculated value is non-negative, the difference between the first coefficient and the first calculated value is determined as the operating condition adjustment coefficient. Multiply the operating condition adjustment coefficient by the rated heat exchange power to obtain the current maximum heat exchange power.

4. The method according to claim 2, characterized in that, The determination of net heat exchange power based on the current maximum heat exchange power and the current heat load includes: The current heat load is adjusted for building heat storage to obtain the start-up heat load; wherein the start-up heat load represents the amount of heat accumulated in the target space per unit time during the start-up phase of the air conditioner; The net heat exchange power is obtained by subtracting the start-up heat load from the current maximum heat exchange power.

5. The method according to claim 1, characterized in that, The determination of the stable temperature attainment time based on the target heat exchange load and the net heat exchange power includes: Divide the target heat exchange load by the net heat exchange power to obtain the lower limit of the time to reach the temperature; wherein, the lower limit of the time to reach the temperature represents the shortest theoretical running time to adjust the target space from the current temperature to the set temperature; Multiply the lower limit of the temperature reaching time by the second coefficient to obtain the stable temperature reaching time; wherein, the second coefficient is >1.

6. The method according to claim 1, characterized in that, The step of performing temperature planning on the stable temperature attainment time to obtain a temperature trajectory includes: The time-varying time constant is determined based on the initial time constant, the time-varying coefficient, and the stable temperature reaching time; wherein the time-varying time constant gradually increases as the planning time progresses, and the initial time constant serves as the boundary constraint of the time-varying time constant; Using the current temperature, the set temperature, the temperature difference correction coefficient, and the time-varying time constant as parameters, an improved first-order exponential decay curve is used for temperature planning to obtain a temperature trajectory. The temperature trajectory includes the ideal temperature at different planning moments within the stable temperature-reaching time. The gradually increasing time-varying time constant makes the rate of change of the ideal temperature in the tail period of the stable temperature-reaching time less than the rate of change in the non-tail period of the stable temperature-reaching time.

7. The method according to claim 1, characterized in that, The method of controlling the operation of the air conditioner based on the temperature trajectory includes: Obtain the ideal rate of change of the ideal temperature at the current planning moment in the temperature trajectory; A heat balance calculation is performed on the ideal rate of change to obtain the ideal heat exchange at the current planning time; The ideal power corresponding to the ideal heat exchange is determined by a first mapping relationship; wherein, the first mapping relationship characterizes the mapping relationship between the air conditioner's heat exchange and the compressor power; The compressor of the air conditioner is controlled based on the ideal power at the current planned time.

8. The method according to claim 7, characterized in that, The operation of the air conditioner compressor at the current planned time based on the ideal power control includes: Obtain the current rate of change of the current temperature; Subtracting the current rate of change from the ideal rate of change yields the rate of change deviation; Based on the deviation in the rate of change, feedback control calculations are performed to obtain the power adjustment amount; The power adjustment amount is added to the ideal power to obtain the target power; The compressor of the air conditioner is controlled to operate at the target power at the current planned time.

9. An air conditioning temperature control device, characterized in that, The air conditioner is installed in the target space, and the air conditioner temperature control device includes: The data acquisition module is used to acquire the target heat exchange load of the target space and the net heat exchange power of the air conditioner; wherein, the target heat exchange load represents the total heat exchange required to adjust the target space from the current temperature to the set temperature, and the net heat exchange power represents the heat exchange output by the air conditioner per unit time for adjusting the current temperature. The duration determination module is used to determine the stable temperature reaching time based on the target heat exchange load and the net heat exchange power; wherein, the stable temperature reaching time characterizes the theoretical running time for the target space to be smoothly adjusted from the current temperature to the set temperature; A temperature planning module is used to plan the temperature for the stable temperature reaching time to obtain a temperature trajectory; wherein, the temperature trajectory includes the ideal temperature at different planned times within the stable temperature reaching time, and the rate of change of the ideal temperature in the tail period of the stable temperature reaching time is less than the rate of change in the non-tail period of the stable temperature reaching time. A temperature control module is used to control the operation of the air conditioner based on the temperature trajectory.

10. A computer-readable storage medium, characterized in that, The device stores a computer program that, when executed by a processor, causes the processor to perform the steps of the method as described in any one of claims 1 to 8.

11. An air conditioner, characterized in that, It includes a memory and a processor, the memory storing a computer program that, when executed by the processor, causes the processor to perform the steps of the method as described in any one of claims 1 to 8.

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