Optical storage air conditioner and control method, device, storage medium and program product thereof

Abstract

The application discloses a control method and device of a light storage air conditioner, the light storage air conditioner, a storage medium and a computer program product, and relates to the technical field of air conditioners. The method comprises the following steps: starting to count a photovoltaic disappearance time period of the day when current power generation of a photovoltaic module is less than a set power threshold value, and obtaining a first counting time; based on a relationship formula of instantaneous power of an air conditioner module changing with time in the photovoltaic disappearance time period in each selected working condition of n established selected working conditions, the current instantaneous power of the air conditioner module and the total predicted power consumption of the day are predicted according to the current outdoor temperature and the first counting time; and the actual power consumption of the air conditioner module is controlled according to the current instantaneous power of the air conditioner module and the total predicted power consumption of the day and the current residual power of an energy storage module. According to the scheme, the actual power consumption of the air conditioner module is controlled according to the total predicted power consumption of the air conditioner module and the residual power of the battery, and the use time of the air conditioner module is prolonged.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of light storage air conditioners, and particularly relates to a light storage air conditioner control method and device, a light storage air conditioner, a storage medium and a computer program product, in particular to an energy-saving control method and device for a light storage air conditioner, a light storage air conditioner, a storage medium and a computer program product. BACKGROUND

[0002] A light storage air conditioner refers to a photovoltaic air conditioner with an energy storage system. The light storage air conditioner has an air conditioner module and an energy storage module. For sunny days, when the sunlight is good, the light storage air conditioner uses solar energy as the energy source of the air conditioner module and the energy storage module, supplies part of the photovoltaic power generation to the energy storage system for charging while meeting the power demand of the air conditioner module, and uses the energy storage system as the power source of the air conditioner module after the sunlight disappears, so as to save the power consumption.

[0003] However, the light storage air conditioner also has some problems, such as: it is difficult to provide stable power supply in areas with small user quantity, such as the Middle East, where the land is vast and the population is sparse; the battery capacity in the energy storage module is limited, and it is difficult to store more power for the air conditioner module, but the cost of increasing the battery capacity in the energy storage module is large, and it is difficult to realize.

[0004] The above content is only used to assist in understanding the technical solutions of the present application, and does not represent the acknowledgement of the above content as prior art. SUMMARY

[0005] The present application aims to provide a light storage air conditioner control method and device, a light storage air conditioner, a storage medium and a computer program product, to solve the problem that in areas where it is difficult to provide stable power supply, the battery capacity in the energy storage module of the light storage air conditioner is limited, and the cost of increasing the battery capacity in the energy storage module is large, and in the case of insufficient photovoltaic conditions and insufficient battery capacity of the energy storage module, the air conditioner module cannot be guaranteed to operate normally until the photovoltaic conditions are met, resulting in less use time of the air conditioner module, so as to control the actual power consumption of the air conditioner module according to the predicted total power consumption of the air conditioner module and the remaining battery capacity, so that the actual power consumption of the air conditioner module is close to the predicted total power consumption of the air conditioner module, and the use time of the air conditioner module is prolonged.

[0006] The application provides a control method of a light storage air conditioner, the light storage air conditioner comprising a photovoltaic module, an air conditioner module and an energy storage module; the control method of the light storage air conditioner comprises the following steps: obtaining historical outdoor temperatures of a photovoltaic disappearance time period on different dates at a location of the light storage air conditioner as test working conditions; selecting n dates with a gap between the lowest temperature in the historical outdoor temperatures above a set temperature threshold from the test working conditions, taking the outdoor temperatures on the n dates as n selected working conditions, and n is a positive integer; testing instantaneous power of the air conditioner module under the n selected working conditions, and establishing a relationship between the instantaneous power of the air conditioner module and time in the photovoltaic disappearance time period under each of the n selected working conditions; obtaining an outdoor temperature of a photovoltaic disappearance time period on the current day at the location of the light storage air conditioner, and recording the outdoor temperature as a current outdoor temperature of the light storage air conditioner; obtaining a current power generation of the photovoltaic module; and obtaining a remaining power of a battery in the energy storage module, and recording the remaining power as a current remaining power of the energy storage module; starting to time the photovoltaic disappearance time period on the current day at the location of the light storage air conditioner when the current power generation of the photovoltaic module is less than a set power threshold, and obtaining a first timing time of the air conditioner module; based on the relationship between the instantaneous power of the air conditioner module and time in the photovoltaic disappearance time period under each of the n selected working conditions, predicting a current instantaneous power of the air conditioner module and a total predicted power consumption of the air conditioner module on the current day according to the current outdoor temperature of the light storage air conditioner and the first timing time of the air conditioner module; and controlling an actual power consumption of the air conditioner module according to the current instantaneous power of the air conditioner module, the total predicted power consumption of the air conditioner module on the current day and the current remaining power of the energy storage module.

[0007] In some embodiments, under the n selected working conditions, the instantaneous power of the air conditioner module is tested, and a relationship between the instantaneous power of the air conditioner module and time in the photovoltaic disappearance time period under each of the n selected working conditions is established, which comprises: keeping the target temperature of the air conditioner unchanged, and making the air conditioner module run under the n selected working conditions respectively to determine the instantaneous power of the air conditioner module during the running of the air conditioner module under each of the n selected working conditions; for each of the n selected working conditions, a fitting function of the instantaneous power of the air conditioner module changing with time is established as the relationship between the instantaneous power of the air conditioner module and time in the photovoltaic disappearance time period under each of the n selected working conditions, with time in the photovoltaic disappearance time period as the independent variable and the instantaneous power of the air conditioner module as the dependent variable.

[0008] In some implementations, the relationship between the instantaneous power of the air conditioning module and the time variation during the photovoltaic disappearance period in each of the n selected operating conditions includes any of the following formulas:

[0009] Pn(t)=a*sin(bt+c)+d*cos(gt+h)+…, n=1~5;

[0010] Pn(t)=a*t m +b*t m-1 +…+g*t+h, n=1~5;

[0011] Pn(t) = a*e (b*t+c) -d*e (f*t+g) +h, n=1~5;

[0012] Among them, P n (t) represents the instantaneous power of the air conditioning module under the nth selected operating condition, and t represents the time within the photovoltaic disappearance period; a, b, c, d, f, g, h, and m are all calculation coefficients, and the calculation coefficients are different under different selected operating conditions.

[0013] In some implementations, based on the relationship between the instantaneous power of the air conditioning module and the time variation during the photovoltaic disappearance period in each of the n selected operating conditions, and according to the current outdoor temperature of the photovoltaic-storage air conditioner and the first timekeeping time of the air conditioning module, the current instantaneous power of the air conditioning module and the predicted total power consumption of the air conditioning module for the day are predicted. This includes: selecting one operating condition from the n selected operating conditions that is the same as or differs from the current outdoor temperature of the photovoltaic-storage air conditioner within a set temperature range; and, according to the relationship between the instantaneous power of the air conditioning module and the time variation during the photovoltaic disappearance period in that selected operating condition, and the first timekeeping time of the air conditioning module, predicting the current instantaneous power of the air conditioning module and the predicted total power consumption of the air conditioning module for the day. Using time as the independent variable, the instantaneous power of the air conditioning module corresponding to the first timing period of operation under the selected working condition is calculated and used as the current instantaneous power of the air conditioning module. Based on the current instantaneous power of the air conditioning module, the predicted total power consumption of the air conditioning module for the day is calculated. Specifically, calculating the predicted total power consumption of the air conditioning module for the day based on the predicted target power of the air conditioning module includes: performing an integral calculation over the time interval from the first timing period to the end of the photovoltaic disappearance period, based on the predicted target power of the air conditioning module, to calculate the total predicted target power of the air conditioning module within that time interval, which is used as the predicted total power consumption of the air conditioning module for the day.

[0014] In some implementations, controlling the actual power consumption of the air conditioning module based on its current instantaneous power, the predicted total power consumption of the air conditioning module for the day, and the current remaining power of the energy storage module includes: using the ratio of the current remaining power of the energy storage module to the predicted total power consumption of the air conditioning module for the day as an adjustment ratio for the actual power consumption of the air conditioning module; wherein, if the adjustment ratio for the actual power consumption of the air conditioning module is greater than 1, then setting the adjustment ratio for the actual power consumption of the air conditioning module to 1; using the product of the current instantaneous power of the air conditioning module and the adjustment ratio for the actual power consumption of the air conditioning module as the target power limit for the air conditioning module; if the air conditioning module operates for a first time period... If the current instantaneous power of the air conditioning module exceeds the limit target power of the air conditioning module, the compressor in the air conditioning module is controlled to operate at a reduced frequency; and the time for the compressor in the air conditioning module to operate at a reduced frequency is timed to obtain a second timed operation time of the air conditioning module; after the second timed operation time of the air conditioning module reaches a set time threshold, the process returns to the previous state, and based on the relationship between the instantaneous power of the air conditioning module and the time change during the photovoltaic disappearance period under each of the n selected operating conditions, the current instantaneous power of the air conditioning module and the predicted total power consumption of the air conditioning module for the day are predicted according to the current outdoor temperature of the photovoltaic-storage air conditioning and the first timed operation time of the air conditioning module.

[0015] In some implementations, controlling the compressor in the air conditioning module to operate at a reduced frequency includes: determining a target frequency for the compressor in the air conditioning module according to the following formula, and controlling the compressor in the air conditioning module to operate at the target frequency, thereby causing the compressor in the air conditioning module to operate at a reduced frequency:

[0016]

[0017] Where α is the proportional coefficient of the compressor in the air conditioning module, f obj Let f be the target frequency of the compressor in the air conditioning module, and let f be the current frequency of the compressor in the air conditioning module.

[0018] In conjunction with the above method, another aspect of the present invention provides a control device for a photovoltaic-storage air conditioner, the photovoltaic-storage air conditioner comprising a photovoltaic module, an air conditioning module, and an energy storage module; the control device for the photovoltaic-storage air conditioner includes: an acquisition unit configured to acquire historical outdoor temperatures during photovoltaic disappearance periods on different dates at the location of the photovoltaic-storage air conditioner, as test conditions; a control unit configured to select n dates from the test conditions where the difference between the lowest historical outdoor temperatures and the lowest temperatures is above a set temperature threshold, and to use the outdoor temperatures of these n dates as n selected conditions, where n is a positive integer; the control unit is further configured to test the instantaneous power of the air conditioning module under the n selected conditions, and to establish a relationship between the instantaneous power of the air conditioning module and the time change during the photovoltaic disappearance period under each of the n selected conditions; the acquisition unit is further configured to acquire the outdoor temperature during the photovoltaic disappearance period on the current day at the location of the photovoltaic-storage air conditioner, and record it as the current outdoor temperature of the photovoltaic-storage air conditioner; acquire the... The control unit is configured to: determine the current power generation of the photovoltaic module; obtain the remaining battery power in the energy storage module and record it as the current remaining power of the energy storage module; and, when the current power generation of the photovoltaic module is less than a set power threshold, start timing the photovoltaic disappearance period of the day at the location of the photovoltaic-storage air conditioner to obtain the first timing time of the air conditioner module's operation; the control unit is also configured to: predict the current instantaneous power of the air conditioner module and the predicted total power consumption of the air conditioner module for the day based on the relationship between the instantaneous power of the air conditioner module and the time change during the photovoltaic disappearance period in each of the n selected operating conditions, according to the current outdoor temperature of the photovoltaic-storage air conditioner and the first timing time of the air conditioner module's operation; and control the actual power consumption of the air conditioner module based on the current instantaneous power of the air conditioner module, the predicted total power consumption of the air conditioner module for the day, and the current remaining power of the energy storage module.

[0019] In some implementations, the control unit tests the instantaneous power of the air conditioning module under the n selected operating conditions and establishes a relationship between the instantaneous power of the air conditioning module and the time change during the photovoltaic disappearance period under each of the n selected operating conditions. This includes: operating the air conditioning module under the n selected operating conditions while keeping the target temperature of the air conditioner constant, and determining the instantaneous power of the air conditioning module during operation under each of the n selected operating conditions; for each of the n selected operating conditions, establishing a fitting function of the instantaneous power of the air conditioning module changing with time under each selected operating condition, with the time during the photovoltaic disappearance period as the independent variable and the instantaneous power of the air conditioning module as the dependent variable, as the relationship between the instantaneous power of the air conditioning module and the time change during the photovoltaic disappearance period under each of the n selected operating conditions.

[0020] In some implementations, the relationship between the instantaneous power of the air conditioning module and the time variation during the photovoltaic disappearance period in each of the n selected operating conditions includes any of the following formulas:

[0021] Pn(t)=a*sin(bt+c)+d*cos(gt+h)+…, n=1~5;

[0022] Pn(t)=a*t m +b*t m-1 +…+g*t+h, n=1~5;

[0023] Pn(t) = a*e (b*t+c) -d*e (f*t+g) +h, n=1~5;

[0024] Among them, P n (t) represents the instantaneous power of the air conditioning module under the nth selected operating condition, and t represents the time within the photovoltaic disappearance period; a, b, c, d, f, g, h, and m are all calculation coefficients, and the calculation coefficients are different under different selected operating conditions.

[0025] In some implementations, the control unit, based on the relationship between the instantaneous power of the air conditioning module and the time variation during the photovoltaic disappearance period in each of the n selected operating conditions, predicts the current instantaneous power of the air conditioning module and the predicted total power consumption of the air conditioning module for the day, according to the current outdoor temperature of the photovoltaic-storage air conditioner and the first timekeeping time of the air conditioning module's operation. This includes: selecting one of the n selected operating conditions that is the same as or differs from the current outdoor temperature of the photovoltaic-storage air conditioner within a set temperature range; and predicting the current instantaneous power of the air conditioning module and the predicted total power consumption of the air conditioning module for the day based on the relationship between the instantaneous power of the air conditioning module and the time variation during the photovoltaic disappearance period in the selected operating condition, using the first timekeeping time of the air conditioning module's operation. With time as the independent variable, the instantaneous power of the air conditioning module corresponding to the first timing period of operation under the selected working condition is calculated as the current instantaneous power of the air conditioning module; based on the current instantaneous power of the air conditioning module, the predicted total power consumption of the air conditioning module for the day is calculated; wherein, the control unit calculates the predicted total power consumption of the air conditioning module for the day based on the predicted target power of the air conditioning module, including: based on the predicted target power of the air conditioning module, performing an integral calculation over the time interval from the first timing period to the end of the photovoltaic disappearance period, to calculate the total predicted target power of the air conditioning module within the time interval, which is used as the predicted total power consumption of the air conditioning module for the day.

[0026] In some embodiments, the control unit controls the actual power consumption of the air conditioning module based on the current instantaneous power of the air conditioning module, the predicted total power consumption of the air conditioning module for the day, and the current remaining power of the energy storage module. This includes: using the ratio of the current remaining power of the energy storage module to the predicted total power consumption of the air conditioning module for the day as an adjustment ratio for the actual power consumption of the air conditioning module; wherein, if the adjustment ratio for the actual power consumption of the air conditioning module is greater than 1, then the adjustment ratio for the actual power consumption of the air conditioning module is set to 1; using the product of the current instantaneous power of the air conditioning module and the adjustment ratio for the actual power consumption of the air conditioning module as the target power limit for the air conditioning module; and if the air conditioning module operates for a first time... If the instantaneous power of the air conditioning module exceeds the limit target power of the air conditioning module after a certain period, the compressor in the air conditioning module is controlled to operate at a reduced frequency; and the time for the compressor in the air conditioning module to operate at a reduced frequency is timed to obtain a second timed operation time of the air conditioning module; after the second timed operation time of the air conditioning module reaches a set time threshold, the process returns to the previous state, and based on the relationship between the instantaneous power of the air conditioning module and the time change during the photovoltaic disappearance period under each of the n selected operating conditions, the current instantaneous power of the air conditioning module and the predicted total power consumption of the air conditioning module for the day are predicted according to the current outdoor temperature of the photovoltaic-storage air conditioning and the first timed operation time of the air conditioning module.

[0027] In some embodiments, the control unit controls the compressor in the air conditioning module to operate at a reduced frequency, including: determining a target frequency for the compressor in the air conditioning module according to the following formula, and controlling the compressor in the air conditioning module to operate at the target frequency, thereby causing the compressor in the air conditioning module to operate at a reduced frequency:

[0028]

[0029] Where α is the proportional coefficient of the compressor in the air conditioning module, f obj Let f be the target frequency of the compressor in the air conditioning module, and let f be the current frequency of the compressor in the air conditioning module.

[0030] In conjunction with the above-mentioned device, the present invention further provides a photovoltaic-storage air conditioner, comprising: the control device for the photovoltaic-storage air conditioner described above.

[0031] In conjunction with the aforementioned photovoltaic-storage air conditioner, the present invention further provides a computer program product, including a computer program that, when executed by a processor, implements the steps of the control method for the photovoltaic-storage air conditioner described above.

[0032] In conjunction with the above method, the present invention further provides a storage medium comprising a stored program, wherein, when the program is executed, the device containing the storage medium is controlled to perform the steps of the control method of the photovoltaic-storage air conditioner described above.

[0033] Therefore, the solution of this invention, for a photovoltaic-storage air conditioner with an air conditioning module and an energy storage module, obtains the instantaneous power of the air conditioning module under different outdoor temperatures, and establishes a fitting function for the instantaneous power of the air conditioning module under different operating conditions as a function of timing; from the start of timing when the photovoltaic disappears on the same day until a set duration, the fitting function corresponding to the operating condition with the same outdoor temperature on that day is selected to predict the instantaneous power of the air conditioning module on that day, calculates the predicted total power consumption of the air conditioning module on that day and compares it with the remaining power of the battery in the energy storage module, and adjusts the actual power of the air conditioning module according to the comparison result to ensure that the power consumption of the air conditioning module does not exceed the remaining power of the battery; thus, by controlling the actual power consumption of the air conditioning module according to the predicted total power consumption of the air conditioning module and the remaining power of the battery, the actual power consumption of the air conditioning module is made close to the predicted total power consumption of the air conditioning module, thereby extending the service life of the air conditioning module.

[0034] Other features and advantages of the invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention.

[0035] The technical solution of the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. Attached Figure Description

[0036] Figure 1 This is a schematic flowchart of an embodiment of the control method for a photovoltaic-storage air conditioner of the present invention;

[0037] Figure 2 This is a flowchart illustrating an embodiment of the method of the present invention for establishing the relationship between the instantaneous power of the air conditioning module and the time change during the photovoltaic disappearance period in each of the n selected operating conditions;

[0038] Figure 3 This is a flowchart illustrating an embodiment of the method of the present invention for predicting the current instantaneous power of the air conditioning module and the predicted total power consumption of the air conditioning module for the day;

[0039] Figure 4 This is a flowchart illustrating an embodiment of the method of the present invention for controlling the actual power consumption of the air conditioning module;

[0040] Figure 5 This is a schematic diagram of the structure of an embodiment of the control device for a photovoltaic energy storage air conditioner of the present invention;

[0041] Figure 6A schematic diagram of one embodiment of a photovoltaic-storage air conditioner;

[0042] Figure 7 A schematic flowchart illustrating an embodiment of an energy-saving control method for photovoltaic-storage air conditioning;

[0043] Figure 8 This is a schematic diagram illustrating the specific process of adjusting the power consumption of a photovoltaic-storage air conditioner.

[0044] Referring to the accompanying drawings, the reference numerals in the embodiments of the present invention are as follows:

[0045] 102 - Acquisition unit; 104 - Control unit. Detailed Implementation

[0046] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of this invention will be clearly and completely described below in conjunction with specific embodiments and corresponding drawings. Obviously, the described embodiments are only a part of the embodiments of this invention, and not all of them. Based on the embodiments of this invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this invention.

[0047] Considering the vast and sparsely populated Middle East region, making it difficult to provide a stable power supply, the battery capacity in the energy storage module is limited, and large-capacity batteries are expensive. In the absence of power, the low-cost battery capacity is insufficient to power the air conditioning module until photovoltaic power is available. Therefore, this invention provides a control method for a photovoltaic-storage air conditioning system, specifically an energy-saving control method. This method predicts the target power consumption of the air conditioning module (e.g., the overnight power consumption) by fitting a function, and adjusts the power consumption to limit the operating power of the air conditioning module, making the actual power consumption of the air conditioning module close to the target power consumption, thereby extending the usage time of the air conditioning module.

[0048] According to embodiments of the present invention, a control method for a photovoltaic-storage air conditioner is provided, such as... Figure 1 The diagram shows a flowchart of an embodiment of the method of the present invention. The photovoltaic-storage air conditioner includes a photovoltaic module, an air conditioning module, and an energy storage module; the energy storage module includes a battery. Figure 6 This is a structural schematic diagram of one embodiment of a photovoltaic-storage air conditioner. Figure 6 As shown, a photovoltaic-storage air conditioner includes: a photovoltaic module, an air conditioning module, and an energy storage module; the photovoltaic module generates photovoltaic power, and the resulting electricity can be supplied to the air conditioning module and the energy storage module respectively; the energy stored in the energy storage module can be supplied to the air conditioning module. In the solution of this invention, as... Figure 1 As shown, the control method of the photovoltaic-storage air conditioner includes steps S110 to S170.

[0049] In step S110, the historical outdoor temperature of the photovoltaic disappearance period on different dates at the location of the photovoltaic-storage air conditioner is obtained as a test condition; wherein, the photovoltaic disappearance period is the time period during which the power generation of the photovoltaic module is less than a set power threshold; wherein, the historical outdoor temperature of the photovoltaic disappearance period on different dates at the location of the photovoltaic-storage air conditioner can be represented in the form of a curve, such as the outdoor temperature curve of the photovoltaic disappearance period on different dates at the location of the photovoltaic-storage air conditioner.

[0050] In step S120, n dates from the test conditions whose lowest historical outdoor temperature difference is above a set temperature threshold are selected, and the outdoor temperatures of these n dates are used as n selected conditions, where n is a positive integer.

[0051] In step S130, under the n selected operating conditions, the instantaneous power of the air conditioning module is tested, and a relationship is established between the instantaneous power of the air conditioning module under each of the n selected operating conditions and the time change during the photovoltaic disappearance period.

[0052] In some embodiments, the specific process of testing the instantaneous power of the air conditioning module under the n selected operating conditions in step S130 and establishing the relationship between the instantaneous power of the air conditioning module under each of the n selected operating conditions and the time change during the photovoltaic disappearance period is described in the following exemplary description.

[0053] The following is combined Figure 2 The diagram shows an embodiment of the method of the present invention for establishing the relationship between the instantaneous power of the air conditioning module and the time change during the photovoltaic disappearance period under each of the n selected operating conditions. It further illustrates the specific process of establishing the relationship between the instantaneous power of the air conditioning module and the time change during the photovoltaic disappearance period under each of the n selected operating conditions in step S130, including steps S210 to S220.

[0054] Step S210: With the target temperature of the air conditioner remaining constant, the air conditioning module is operated under each of the n selected operating conditions, and the instantaneous power of the air conditioning module during operation under each of the n selected operating conditions is determined; wherein, the instantaneous power of the air conditioning module during operation under each of the n selected operating conditions can be represented by a curve, such as the instantaneous power curve of the air conditioning module during operation under each of the n selected operating conditions.

[0055] Step S220: For each of the n selected operating conditions, with the time within the photovoltaic disappearance period as the independent variable and the instantaneous power of the air conditioning module as the dependent variable, establish a fitting function for the change of the instantaneous power of the air conditioning module with time under each selected operating condition, which serves as the relationship between the instantaneous power of the air conditioning module and the time within the photovoltaic disappearance period under each of the n selected operating conditions.

[0056] The present invention provides an energy-saving control strategy for a photovoltaic-storage air conditioner. This strategy is mounted on the main control board of the outdoor unit of the air conditioner module. Specifically, based on the current outdoor temperature, a similar operating condition fitting function is selected to limit the power of the air conditioner module. Figure 7 This is a schematic flowchart illustrating an embodiment of an energy-saving control method for photovoltaic-storage air conditioning. Figure 7 As shown, the energy-saving control method for photovoltaic-storage air conditioning includes:

[0057] Step 1: During the testing phase, establish a fitting function P for the instantaneous power P of the air conditioning module as a function of time t under different operating conditions. n (t), specifically including:

[0058] Step 11: Obtain test data. In step 11, the outdoor temperature from 6 PM to 8 AM the next day on different days can be obtained as the test conditions. Five days with large differences in outdoor temperature are selected, and conditions 1, 2, 3, 4, and 5 are formed based on the outdoor temperature curve. In other words, the conditions of one day form one test condition.

[0059] During the testing phase, outdoor temperature and temperature difference are considered when collecting data; cloudy and rainy days are considered special cases and are not considered at this time. The time period from 6 PM to 8 AM the next day can be adjusted, mainly to select the period of day when photovoltaic power disappears. The outdoor temperature difference refers to the difference in outdoor temperature between different selected dates. For example, if the outdoor temperature range of 25℃ to 30℃ is selected for Condition 1, then the outdoor temperature range of 28℃ to 32℃ can be selected for Condition 2. The difference in the lowest outdoor temperature between different dates should be greater than 3℃.

[0060] Step 12: Set the target temperature of the air conditioning module to 25℃, test the operation of the air conditioning module under different operating conditions, and record the instantaneous power of the air conditioning module during operation.

[0061] The operating status of the air conditioning module refers to basic operating data such as its instantaneous power, power consumption, and indoor air outlet temperature. The power consumption and indoor air outlet temperature obtained from testing can be used to compare the operating status of the air conditioning module under corresponding conditions. The instantaneous power of the air conditioning module is a calculated value obtained during its operation based on the power of the compressor and fan, which are directly obtainable data during the module's operation. In practice, only the instantaneous power and power consumption of the air conditioning module need to be recorded. The instantaneous power of the air conditioning module can be obtained through testing and calculation, and the power consumption Etotal can be calculated based on the instantaneous power Pn(t). The instantaneous power of the air conditioning module is represented by the sum of the compressor power and the fan power.

[0062]

[0063] Step 13: Using the timing time t as the independent variable (denoted as t = 0 at 18:00 and t = 14 at 8:00 the next day), and the instantaneous power P of the air conditioning module as the dependent variable, fit the data of the instantaneous power of the air conditioning module under different test conditions into a function of the instantaneous power P changing with the timing time t, and obtain the fitting function P of the instantaneous power P of the air conditioning module changing with the timing t. n (t).

[0064] The present invention uses a fitting function to predict the target power consumption of the air conditioning module (such as the overnight power consumption of the air conditioning module), and adjusts it to limit the operating power of the air conditioning module, so that the actual power consumption of the air conditioning module is close to the predicted total power consumption of the air conditioning module, thereby extending the usage time of the air conditioning module.

[0065] In some implementations, the relationship between the instantaneous power of the air conditioning module and the time variation during the photovoltaic disappearance period in each of the n selected operating conditions established in step S220 includes any of the following formulas:

[0066] Pn(t)=a*sin(bt+c)+d*cos(gt+h)+…, n=1~5;

[0067] Pn(t)=a*t m +b*t m-1 +…+g*t+h, n=1~5;

[0068] Pn(t) = a*e (b*t+c) -d*e (f*t+g) +h, n=1~5;

[0069] Among them, P n(t) represents the instantaneous power of the air conditioning module under the nth selected operating condition, and t represents the time within the photovoltaic disappearance period; a, b, c, d, f, g, h, and m are all calculation coefficients, and the calculation coefficients are different under different selected operating conditions.

[0070] Specifically, such as Figure 7 As shown, the energy-saving control method of the photovoltaic-storage air conditioner further includes: in step 13, using the timing time t as the independent variable (denoted as t = 0 at 18:00 and t = 14 at 8:00 the next day), and the instantaneous power P of the air conditioner module as the dependent variable, fitting the data of the instantaneous power of the air conditioner module under different test conditions into a function of the instantaneous power P changing with the timing time t, and obtaining the fitting function P of the instantaneous power P of the air conditioner module changing with the timing t. n (t) can be as follows:

[0071] Pn(t)=a*sin(bt+c)+d*cos(gt+h)+…, n=1~5 (1).

[0072] Where a, b, c, d, g, and h represent real numbers, and their values ​​will vary depending on the instantaneous power data of the air conditioning module under different test conditions. The fitting function P for the instantaneous power P of the air conditioning module as a function of time t is given. n The instantaneous power (t) of the air conditioning module will change depending on the data of the instantaneous power of the air conditioning module under different test conditions. However, it is all fitted using trigonometric functions. The instantaneous power of the air conditioning module under different test conditions obtained by fitting with trigonometric functions has a high degree of fit with the actual power of the air conditioning module, which is conducive to improving the accuracy of the instantaneous power prediction of the air conditioning module.

[0073] For example, when n = 1 to 5, the specific form of the formula Pn(t) = a*sin(bt+c) + d*cos(gt+h) + ... can be as follows:

[0074] P1(t)=1223.9sin(0.243t-0.8417)+3202.27sin(0.444t+0.687)+2460.11sin(0.476t+3.578)

[0075] P2(t)=-169.06cos(0.405t)-88.365sin(0.405t)-83.06cos(0.81t)+72.54sin(0.81t)+595.08

[0076] P3(t)=0.027t 5 -0.136t 4 +2.488t 3 -20.781t 2+86.955t+319.68.

[0077] P4(t)=0.002t 5 -0.114t 4 +0.228t 3 -2.081t 2 +9.801t +401.87

[0078] P5(t) = -543.3e (-0.286t) -62.01e (0.128t) +1043.7

[0079] In step S140, the outdoor temperature of the location of the photovoltaic-storage air conditioner during the photovoltaic disappearance period of the day is obtained and recorded as the current outdoor temperature of the photovoltaic-storage air conditioner; the current power generation of the photovoltaic module is obtained; and the remaining battery power in the energy storage module is obtained and recorded as the current remaining battery power of the energy storage module (e.g., the remaining battery power E in the battery module). rem ).

[0080] In step S150, when the current power generation of the photovoltaic module is less than a set power threshold, the timing of the photovoltaic disappearance time period of the day at the location of the photovoltaic-storage air conditioner is started to obtain the first timing time of the air conditioner module's operation.

[0081] In step S160, based on the relationship between the instantaneous power of the air conditioning module and the time change during the photovoltaic disappearance period under each of the n selected operating conditions, and according to the current outdoor temperature of the photovoltaic-storage air conditioner and the first timing of the air conditioning module's operation, the current instantaneous power of the air conditioning module and the predicted total power consumption of the air conditioning module for the day (e.g., the predicted total power consumption E of the air conditioning module for the day) are predicted. total ).

[0082] In some implementations, the specific process of predicting the current instantaneous power of the air conditioning module and the predicted total power consumption of the air conditioning module for the day in step S160 is based on the relationship between the instantaneous power of the air conditioning module and the time change during the photovoltaic disappearance period in each of the n selected operating conditions, according to the current outdoor temperature of the photovoltaic-storage air conditioning and the first timing of the operation of the air conditioning module. See the following exemplary description.

[0083] The following is combined Figure 3The schematic diagram shows an embodiment of the method of the present invention for predicting the current instantaneous power of the air conditioning module and the predicted total power consumption of the air conditioning module for the day. It further illustrates the specific process of predicting the current instantaneous power of the air conditioning module and the predicted total power consumption of the air conditioning module for the day in step S160, including steps S310 to S330.

[0084] Step S310: Select one of the n selectable operating conditions that is the same as or differs from the current outdoor temperature of the photovoltaic-storage air conditioner within a set temperature range.

[0085] Step S320: Based on the relationship between the instantaneous power of the air conditioning module under the selected operating condition and the time change during the photovoltaic disappearance period, the instantaneous power of the air conditioning module corresponding to the first time of operation of the air conditioning module under the selected operating condition is calculated using the first time of operation of the air conditioning module as the independent variable, and is used as the current instantaneous power of the air conditioning module.

[0086] Step S330: Calculate the predicted total power consumption of the air conditioning module for the day based on the current instantaneous power of the air conditioning module.

[0087] Specifically, such as Figure 7 As shown, the energy-saving control method for photovoltaic-storage air conditioning also includes: Step 2, the operation phase, based on the fitting function P of the instantaneous power P of the air conditioning module under different operating conditions as a function of time t established in the testing phase. n (t), energy-saving control of the air conditioning module, specifically including:

[0088] Step 21: When the air conditioning module detects that the power generation of the photovoltaic module is less than 50, it considers the photovoltaic to be gone, enters the energy-saving control scheme, and starts timing for 14 hours. At this time, the timing time t = 0.

[0089] Step 22: Detect the outdoor temperature of the day and compare it with the operating temperatures of the n operating conditions obtained during the testing phase. Select the operating condition among the n operating conditions that is most similar to the outdoor temperature of the day. Use the operating status of the air conditioning module under this operating condition obtained during the testing phase as the predicted data for the operating status of the air conditioning module on the day. That is, the instantaneous power of the air conditioning module on the day is fitted using the function P. n (t) makes a prediction, limits the power of the air conditioning module to adjust the power consumption of the photovoltaic-storage air conditioner, and ends the timing when the timing time t = 14h, thus ending the power limitation on the air conditioning module.

[0090] The present invention establishes a fitting function P of the instantaneous power P of the air conditioning module as a function of time t under different operating conditions by simulating the instantaneous power of the air conditioning module under the same operating conditions (such as temperature conditions). n(t) is used to predict the target power of the air conditioning module; the temperature conditions of the day are detected, and the fitting function most similar to the temperature conditions of the day is selected to calculate the total predicted power consumption of the air conditioning module. The calculation of the total predicted power consumption of the air conditioning module is relatively accurate, which is conducive to the precise control of the actual power consumption of the air conditioning module.

[0091] Preferably, in step S330, calculating the predicted total power consumption of the air conditioning module for the day based on the predicted target power of the air conditioning module includes: performing an integral calculation over the time interval from the first timing time to the end of the photovoltaic disappearance time period based on the predicted target power of the air conditioning module, so as to calculate the total predicted target power of the air conditioning module within the time interval, which is used as the predicted total power consumption of the air conditioning module for the day.

[0092] Specifically, Figure 8 This is a flowchart illustrating the process of adjusting the power consumption of a photovoltaic-storage air conditioner. For details on the process of limiting the power of the air conditioning module in step 22 to adjust the power consumption of the photovoltaic-storage air conditioner, please refer to [link to relevant documentation]. Figure 8 The example shown. For example... Figure 8 As shown, the power consumption adjustment process of a photovoltaic-storage air conditioner includes:

[0093] Step 31: Calculate the predicted total power consumption E of the air conditioning module for the day. total :

[0094]

[0095] Where t is the current time, t max This is the time at which the timing ends. It is calculated from the current timing time t to the end timing time t. max By integrating the instantaneous power P of the air conditioning module within a certain time period, the predicted total power consumption of the air conditioning module for the day can be calculated. This method can obtain a more accurate predicted total power consumption of the air conditioning module for the day, which is beneficial to improving the accuracy of controlling the actual power consumption of the air conditioning module based on the predicted total power consumption of the day.

[0096] In step S170, based on the current instantaneous power of the air conditioning module, the predicted total power consumption of the air conditioning module for the day, and the current remaining power of the energy storage module, the actual power consumption of the air conditioning module is controlled so that the actual power consumption of the air conditioning module is close to the target power consumption of the air conditioning module, thereby extending the usage time of the air conditioning module.

[0097] The present invention addresses this issue by testing the instantaneous power of the air conditioning module under identical operating conditions (e.g., temperature conditions) or directly acquiring the instantaneous power of the air conditioning module from local historical data. The acquired instantaneous power is then fitted to obtain a fitting function. The temperature conditions of the day are detected, and the fitting function most similar to those conditions is selected to calculate the total predicted power consumption of the air conditioning module. The power consumption of the air conditioning module is limited by the ratio of its total predicted power consumption to the remaining battery power, ensuring that the power consumption does not exceed the remaining battery power, even at the expense of some user experience. Furthermore, by simulating the instantaneous power of the air conditioning module under identical operating conditions (e.g., temperature conditions), a fitting function P is established to represent the change of the instantaneous power P of the air conditioning module with time t under different operating conditions. n (t) is used to predict the total power consumption of the air conditioning module and limit the power of the air conditioning according to the fitting function. By comparing the predicted total power consumption of the air conditioning module with the remaining power of the battery in the actual battery module, the actual power consumption of the air conditioning module can be accurately controlled and kept within the target range.

[0098] In some implementations, the specific process of controlling the actual power consumption of the air conditioning module in step S170 based on the current instantaneous power of the air conditioning module, the predicted total power consumption of the air conditioning module for the day, and the current remaining power of the energy storage module is described in the following exemplary description.

[0099] The following is combined Figure 4 The flowchart shown is a schematic diagram of an embodiment of the method of the present invention for controlling the actual power consumption of the air conditioning module. The specific process of controlling the actual power consumption of the air conditioning module in step S170 is further explained, including steps S410 to S440.

[0100] Step S410: The ratio of the current remaining power of the energy storage module to the predicted total power consumption of the air conditioning module for the day is used as the adjustment ratio of the actual power consumption of the air conditioning module (e.g., the adjustment ratio K of the power consumption of the air conditioning module); wherein, if the adjustment ratio of the actual power consumption of the air conditioning module is greater than 1, then the adjustment ratio of the actual power consumption of the air conditioning module is set to 1.

[0101] Step S420: The product of the current instantaneous power of the air conditioning module and the adjustment ratio of the actual power consumption of the air conditioning module is used as the limiting target power of the air conditioning module, such as the instantaneous power P of the air conditioning module. n (t) limiting target power P obj (t).

[0102] Step S430: If the current instantaneous power of the air conditioning module exceeds the limit target power of the air conditioning module after the first timing period, then control the compressor in the air conditioning module to operate at a reduced frequency.

[0103] In some embodiments, controlling the compressor in the air conditioning module to operate at a reduced frequency in step S430 includes: determining the target frequency of the compressor in the air conditioning module according to the following formula, and controlling the compressor in the air conditioning module to operate at the target frequency, so that the compressor in the air conditioning module operates at a reduced frequency:

[0104]

[0105] Where α is the proportional coefficient of the compressor in the air conditioning module, f obj Let f be the target frequency of the compressor in the air conditioning module, and let f be the current frequency of the compressor in the air conditioning module.

[0106] Specifically, such as Figure 8 As shown, the power consumption adjustment process of the photovoltaic-storage air conditioner also includes: in step 34, frequency reduction control is performed on the compressor in the air conditioning module, which can be achieved by the following formula:

[0107]

[0108] Where α is the proportional coefficient of the compressor, f obj Let f be the target frequency of the compressor and f be the current frequency of the compressor. By using formula (3) to calculate the target frequency of the compressor, the compressor can be operated at a reduced frequency, which can achieve precise control of the compressor frequency and improve the precise control of the actual power consumption of the air conditioning module. Because the limiting condition for the calculation in the above-mentioned calculation is power, the compressor frequency corresponding to this power is uncertain. Using formula (3) can determine the compressor frequency more accurately, which is conducive to improving the precise control of the actual power consumption of the air conditioning module.

[0109] Step S440: The time for the compressor in the air conditioning module to operate at reduced frequency is timed to obtain the second timed operation time of the air conditioning module. After the second timed operation time of the air conditioning module reaches a set time threshold, the process returns to the previous step. Based on the relationship between the instantaneous power of the air conditioning module and the time change during the photovoltaic disappearance period under each of the n selected operating conditions, the current instantaneous power of the air conditioning module and the predicted total power consumption of the air conditioning module for the day are predicted according to the current outdoor temperature of the photovoltaic-storage air conditioner and the first timed operation time of the air conditioning module. This process is repeated until the photovoltaic disappearance period at the location of the photovoltaic-storage air conditioner for the day ends, and then the normal operation logic of the photovoltaic-storage air conditioner is restored.

[0110] Specifically, such as Figure 8 As shown, the power consumption adjustment process of a photovoltaic-storage air conditioner also includes:

[0111] Step 32: Obtain the remaining battery power E in the battery module. rem Among them, the remaining battery capacity E in the battery module rem The unit of E and the predicted total power consumption total The units are consistent. When the remaining battery power E in the battery module is... rem When = 0, the battery capacity E in the battery module rem The air conditioning module shuts down when the power is depleted.

[0112] Step 33: Calculate the adjustment ratio K for the power consumption of the air conditioning module = the remaining battery power E in the battery module. rem / Total predicted power consumption of the air conditioning module for the day E total When the power consumption adjustment ratio K of the air conditioning module is greater than 1, that is, when the remaining battery power E in the battery module is... rem The daily predicted total power consumption E of the air conditioning module is greater than that of the air conditioning module. total The remaining battery capacity E in the battery module rem Sufficient to support the operation of the air conditioning module, the power consumption adjustment ratio K of the air conditioning module is set to 1, requiring the air conditioning module to maintain its current operating frequency, i.e., step 34; when the power consumption adjustment ratio K of the air conditioning module is less than 1, that is, when the remaining battery power E in the battery module is... rem The daily predicted total power consumption E of the air conditioning module is less than total The remaining battery capacity E in the battery module rem The frequency of the air conditioning module is insufficient to support its operation, so it is necessary to control the air conditioning module to operate at a reduced frequency, i.e., to execute step 34.

[0113] Step 34: Set the instantaneous power P of the air conditioning module n (t) limiting target power P obj (t)=P n (t)*K. Instantaneous power P of the air conditioning module detected every minute. n (t) Whether it exceeds the target power P of the air conditioning module obj (t), when the instantaneous power P of the air conditioning module n (t) exceeds the target power P of the air conditioning module obj When (t), the frequency of the compressor in the air conditioning module is reduced.

[0114] Step 35: Time for 30 minutes. After the timer expires, return to step 22 and repeat steps 31 to 35. The 30-minute timer allows the air conditioning module to run at the current frequency for 30 minutes before recalculating for variable frequency control, avoiding the need for frequency-based control and improving comfort.

[0115] The present invention predicts the overnight power consumption of the air conditioning module by fitting a function, and then adjusts and limits the overall power of the air conditioning module. The method of limiting the overall power of the air conditioning module is flexible and varied, taking into account both the energy efficiency of the air conditioning module and the user's comfort experience.

[0116] The technical solution of this embodiment, for a photovoltaic-storage air conditioner with an air conditioning module and an energy storage module, obtains the instantaneous power of the air conditioning module under different outdoor temperatures, and establishes a fitting function for the instantaneous power of the air conditioning module as a function of timing under different operating conditions. From the moment the photovoltaic power disappears on a given day until a set duration, the fitting function corresponding to the operating condition with the same outdoor temperature on that day is selected to predict the instantaneous power of the air conditioning module for that day. The predicted total power consumption of the air conditioning module for that day is calculated and compared with the remaining battery power in the energy storage module. Based on the comparison result, the actual power of the air conditioning module is adjusted to ensure that the power consumption of the air conditioning module does not exceed the remaining battery power. Therefore, by controlling the actual power consumption of the air conditioning module based on the predicted total power consumption and the remaining battery power, the actual power consumption of the air conditioning module is made close to the predicted total power consumption, thus extending the service life of the air conditioning module.

[0117] According to an embodiment of the present invention, a control device for a photovoltaic-storage air conditioner corresponding to the control method for such a conditioner is also provided. See also... Figure 5 The diagram shows a structural schematic of an embodiment of the device of the present invention. The photovoltaic-storage air conditioner includes a photovoltaic module, an air conditioning module, and an energy storage module; the energy storage module includes a battery. Figure 6 This is a structural schematic diagram of one embodiment of a photovoltaic-storage air conditioner. Figure 6 As shown, a photovoltaic-storage air conditioner includes: a photovoltaic module, an air conditioning module, and an energy storage module; the photovoltaic module generates photovoltaic power, and the resulting electricity can be supplied to the air conditioning module and the energy storage module respectively; the energy stored in the energy storage module can be supplied to the air conditioning module. In the solution of this invention, as... Figure 5 As shown, the control device for the photovoltaic-storage air conditioner includes: an acquisition unit 102 and a control unit 104.

[0118] The acquisition unit 102 is configured to acquire the historical outdoor temperature of the photovoltaic (PV) disappearance period on different dates at the location of the photovoltaic-storage air conditioner, as a test condition. The PV disappearance period is the time during which the power generation of the photovoltaic module is less than a set power threshold. The historical outdoor temperature of the photovoltaic disappearance period on different dates at the location of the photovoltaic-storage air conditioner can be represented by a curve, such as the outdoor temperature curve of the photovoltaic disappearance period on different dates at the location of the photovoltaic-storage air conditioner. The specific functions and processing of the acquisition unit 102 are described in step S110.

[0119] The control unit 104 is configured to select n dates from the test conditions where the difference between the lowest historical outdoor temperature and the lowest outdoor temperature is greater than or equal to a set temperature threshold, and to use the outdoor temperatures of these n dates as n selected conditions, where n is a positive integer. The specific functions and processing of the control unit 104 are described in step S120.

[0120] The control unit 104 is further configured to test the instantaneous power of the air conditioning module under the n selected operating conditions, and to establish a relationship between the instantaneous power of the air conditioning module and the time variation during the photovoltaic disappearance period under each of the n selected operating conditions. The specific functions and processing of the control unit 104 are further described in step S130.

[0121] In some embodiments, the control unit 104 tests the instantaneous power of the air conditioning module under the n selected operating conditions, and establishes a relationship between the instantaneous power of the air conditioning module and the time variation during the photovoltaic disappearance period under each of the n selected operating conditions, including:

[0122] The control unit 104 is further configured to, while keeping the target temperature of the air conditioner constant, operate the air conditioning module under each of the n selected operating conditions, and determine the instantaneous power of the air conditioning module during operation under each of the n selected operating conditions; wherein, the instantaneous power of the air conditioning module during operation under each of the n selected operating conditions can be represented by a curve, such as the instantaneous power curve of the air conditioning module during operation under each of the n selected operating conditions. The specific functions and processing of the control unit 104 are further described in step S210.

[0123] The control unit 104 is further configured to, for each of the n selected operating conditions, establish a fitting function for the change of the instantaneous power of the air conditioning module over time under each selected operating condition, using the time within the photovoltaic disappearance period as the independent variable and the instantaneous power of the air conditioning module as the dependent variable. This function serves as the relationship between the instantaneous power of the air conditioning module and the time within the photovoltaic disappearance period under each of the n selected operating conditions. The specific functions and processing of this control unit 104 are further described in step S220.

[0124] The present invention provides an energy-saving control strategy for a photovoltaic-storage air conditioner. This strategy is mounted on the main control board of the outdoor unit of the air conditioner module. Specifically, based on the current outdoor temperature, a similar operating condition fitting function is selected to limit the power of the air conditioner module. Figure 7 This is a schematic flowchart illustrating an embodiment of an energy-saving control method for photovoltaic-storage air conditioning. Figure 7 As shown, the energy-saving control method for photovoltaic-storage air conditioning includes:

[0125] Step 1: During the testing phase, establish a fitting function P for the instantaneous power P of the air conditioning module as a function of time t under different operating conditions. n (t), specifically including:

[0126] Step 11: Obtain test data. In step 11, the outdoor temperature from 6 PM to 8 AM the next day on different days can be obtained as the test conditions. Five days with large differences in outdoor temperature are selected, and conditions 1, 2, 3, 4, and 5 are formed based on the outdoor temperature curve. In other words, the conditions of one day form one test condition.

[0127] During the testing phase, outdoor temperature and temperature difference are considered when collecting data; cloudy and rainy days are considered special cases and are not considered at this time. The time period from 6 PM to 8 AM the next day can be adjusted, mainly to select the period of day when photovoltaic power disappears. The outdoor temperature difference refers to the difference in outdoor temperature between different selected dates. For example, if the outdoor temperature range of 25℃ to 30℃ is selected for Condition 1, then the outdoor temperature range of 28℃ to 32℃ can be selected for Condition 2. The difference in the lowest outdoor temperature between different dates should be greater than 3℃.

[0128] Step 12: Set the target temperature of the air conditioning module to 25℃, test the operation of the air conditioning module under different operating conditions, and record the instantaneous power of the air conditioning module during operation.

[0129] The operating status of the air conditioning module refers to basic operating data such as its instantaneous power, power consumption, and indoor air outlet temperature. The power consumption and indoor air outlet temperature obtained from testing can be used to compare the operating status of the air conditioning module under corresponding conditions. The instantaneous power of the air conditioning module is a calculated value obtained during its operation based on the power of the compressor and fan, which are directly obtainable data during the module's operation. In practice, only the instantaneous power and power consumption of the air conditioning module need to be recorded. The instantaneous power of the air conditioning module can be obtained through testing and calculation, and the power consumption Etotal can be calculated based on the instantaneous power Pn(t). The instantaneous power of the air conditioning module is represented by the sum of the compressor power and the fan power.

[0130]

[0131] Step 13: Using the timing time t as the independent variable (denoted as t = 0 at 18:00 and t = 14 at 8:00 the next day), and the instantaneous power P of the air conditioning module as the dependent variable, fit the data of the instantaneous power of the air conditioning module under different test conditions into a function of the instantaneous power P changing with the timing time t, and obtain the fitting function P of the instantaneous power P of the air conditioning module changing with the timing t. n (t).

[0132] The present invention uses a fitting function to predict the target power consumption of the air conditioning module (such as the overnight power consumption of the air conditioning module), and adjusts it to limit the operating power of the air conditioning module, so that the actual power consumption of the air conditioning module is close to the predicted total power consumption of the air conditioning module, thereby extending the usage time of the air conditioning module.

[0133] In some implementations, a relationship is established between the instantaneous power of the air conditioning module and the time variation during the photovoltaic disappearance period in each of the n selected operating conditions, including any of the following formulas:

[0134] Pn(t)=a*sin(bt+c)+d*cos(gt+h)+…, n=1~5;

[0135] Pn(t)=a*t m +b*t m-1 +…+g*t+h, n=1~5;

[0136] Pn(t) = a*e (b*t+c) -d*e (f*t+g) +h, n=1~5;

[0137] Among them, P n (t) represents the instantaneous power of the air conditioning module under the nth selected operating condition, and t represents the time within the photovoltaic disappearance period; a, b, c, d, f, g, h, and m are all calculation coefficients, and the calculation coefficients are different under different selected operating conditions.

[0138] Specifically, such as Figure 7 As shown, the energy-saving control method of the photovoltaic-storage air conditioner further includes: in step 13, using the timing time t as the independent variable (denoted as t = 0 at 18:00 and t = 14 at 8:00 the next day), and the instantaneous power P of the air conditioner module as the dependent variable, fitting the data of the instantaneous power of the air conditioner module under different test conditions into a function of the instantaneous power P changing with the timing time t, and obtaining the fitting function P of the instantaneous power P of the air conditioner module changing with the timing t. n (t) can be as follows:

[0139] Pn(t)=a*sin(bt+c)+d*cos(gt+h)+…, n=1~5 (1).

[0140] Where a, b, c, d, g, and h represent real numbers, and their values ​​will vary depending on the instantaneous power data of the air conditioning module under different test conditions. The fitting function P for the instantaneous power P of the air conditioning module as a function of time t is given. n The instantaneous power (t) of the air conditioning module will change depending on the data of the instantaneous power of the air conditioning module under different test conditions. However, it is all fitted using trigonometric functions. The instantaneous power of the air conditioning module under different test conditions obtained by fitting with trigonometric functions has a high degree of fit with the actual power of the air conditioning module, which is conducive to improving the accuracy of the instantaneous power prediction of the air conditioning module.

[0141] For example, when n = 1 to 5, the specific form of the formula Pn(t) = a*sin(bt+c) + d*cos(gt+h) + ... can be as follows:

[0142] P1(t)=1223.9sin(0.243t-0.8417)+3202.27sin(0.444t+0.687)+2460.11sin(0.476t+3.578)

[0143] P2(t)=-169.06cos(0.405t)-88.365sin(0.405t)-83.06cos(0.81t)+72.54sin(0.81t)+595.08

[0144] P3(t)=0.027t 5 -0.136t 4 +2.488t 3 -20.781t 2 +86.955t+319.68.

[0145] P4(t)=0.002t 5 -0.114t 4 +0.228t 3 -2.081t 2 +9.801t +401.87

[0146] P5(t) = -543.3e (-0.286t) -62.01e (0.128t) +1043.7

[0147] The acquisition unit 102 is further configured to acquire the outdoor temperature during the photovoltaic disappearance period of the current day at the location of the photovoltaic-storage air conditioner, and record it as the current outdoor temperature of the photovoltaic-storage air conditioner; acquire the current power generation of the photovoltaic module; and acquire the remaining battery power in the energy storage module, and record it as the current remaining battery power of the energy storage module (e.g., the remaining battery power E in the battery module). remFor details on the specific functions and processing of the acquisition unit 102, please refer to step S140.

[0148] The control unit 104 is further configured to, when the current power generation of the photovoltaic module is less than a set power threshold, start timing the photovoltaic disappearance period of the day at the location of the photovoltaic-storage air conditioner, to obtain the first timing time of the air conditioner module's operation. The specific functions and processing of this control unit 104 are further described in step S150.

[0149] The control unit 104 is further configured to, based on the relationship between the instantaneous power of the air conditioning module and the time variation during the photovoltaic disappearance period in each of the n selected operating conditions, predict the current instantaneous power of the air conditioning module and the predicted total power consumption of the air conditioning module for the day (e.g., the predicted total power consumption E of the air conditioning module for the day) according to the current outdoor temperature of the photovoltaic-storage air conditioning system and the first timing of the air conditioning module's operation. total For details on the specific functions and processing of the control unit 104, please refer to step S160.

[0150] In some embodiments, the control unit 104, based on the relationship between the instantaneous power of the air conditioning module and the time change during the photovoltaic disappearance period in each of the n selected operating conditions, predicts the current instantaneous power of the air conditioning module and the predicted total power consumption of the air conditioning module for the day, according to the current outdoor temperature of the photovoltaic-storage air conditioner and the first timing of the air conditioning module's operation, including:

[0151] The control unit 104 is further configured to select, from the n selectable operating conditions, one that is the same as or differs from the current outdoor temperature of the photovoltaic-storage air conditioner within a set temperature range. The specific functions and processing of the control unit 104 are further described in step S310.

[0152] The control unit 104 is further configured to calculate, based on the relationship between the instantaneous power of the air conditioning module and the time change during the photovoltaic disappearance period under the selected operating condition, and using the first timing period of the air conditioning module's operation as the independent variable, the instantaneous power of the air conditioning module corresponding to the first timing period of the air conditioning module's operation under the selected operating condition, and use this instantaneous power as the current instantaneous power of the air conditioning module. The specific functions and processing of this control unit 104 are further described in step S320.

[0153] The control unit 104 is further configured to calculate the predicted total power consumption of the air conditioning module for the day based on the current instantaneous power of the air conditioning module. The specific functions and processing of the control unit 104 are further described in step S330.

[0154] Specifically, such asFigure 7 As shown, the energy-saving control method for photovoltaic-storage air conditioning also includes: Step 2, the operation phase, based on the fitting function P of the instantaneous power P of the air conditioning module under different operating conditions as a function of time t established in the testing phase. n (t), energy-saving control of the air conditioning module, specifically including:

[0155] Step 21: When the air conditioning module detects that the power generation of the photovoltaic module is less than 50, it considers the photovoltaic to be gone, enters the energy-saving control scheme, and starts timing for 14 hours. At this time, the timing time t = 0.

[0156] Step 22: Detect the outdoor temperature of the day and compare it with the operating temperatures of the n operating conditions obtained during the testing phase. Select the operating condition among the n operating conditions that is most similar to the outdoor temperature of the day. Use the operating status of the air conditioning module under this operating condition obtained during the testing phase as the predicted data for the operating status of the air conditioning module on the day. That is, the instantaneous power of the air conditioning module on the day is fitted using the function P. n (t) makes a prediction, limits the power of the air conditioning module to adjust the power consumption of the photovoltaic-storage air conditioner, and ends the timing when the timing time t = 14h, thus ending the power limitation on the air conditioning module.

[0157] The present invention establishes a fitting function P of the instantaneous power P of the air conditioning module as a function of time t under different operating conditions by simulating the instantaneous power of the air conditioning module under the same operating conditions (such as temperature conditions). n (t) is used to predict the target power of the air conditioning module; the temperature conditions of the day are detected, and the fitting function most similar to the temperature conditions of the day is selected to calculate the total predicted power consumption of the air conditioning module. The calculation of the total predicted power consumption of the air conditioning module is relatively accurate, which is conducive to the precise control of the actual power consumption of the air conditioning module.

[0158] Preferably, the control unit 104 calculates the predicted total power consumption of the air conditioning module for the day based on the predicted target power of the air conditioning module, including: the control unit 104 is further configured to perform integral calculation over the time interval from the first timing time to the end of the photovoltaic disappearance time period based on the predicted target power of the air conditioning module, so as to calculate the total predicted target power of the air conditioning module within the time interval, which is used as the predicted total power consumption of the air conditioning module for the day.

[0159] Specifically, Figure 8 This is a flowchart illustrating the process of adjusting the power consumption of a photovoltaic-storage air conditioner. For details on the process of limiting the power of the air conditioning module in step 22 to adjust the power consumption of the photovoltaic-storage air conditioner, please refer to [link to relevant documentation]. Figure 8 The example shown. For example... Figure 8 As shown, the power consumption adjustment process of a photovoltaic-storage air conditioner includes:

[0160] Step 31: Calculate the predicted total power consumption E of the air conditioning module for the day. total :

[0161]

[0162] Where t is the current time, t max This is the time at which the timing ends. It is calculated from the current timing time t to the end timing time t. max By integrating the instantaneous power P of the air conditioning module within a certain time period, the predicted total power consumption of the air conditioning module for the day can be calculated. This method can obtain a more accurate predicted total power consumption of the air conditioning module for the day, which is beneficial to improving the accuracy of controlling the actual power consumption of the air conditioning module based on the predicted total power consumption of the day.

[0163] The control unit 104 is further configured to control the actual power consumption of the air conditioning module based on the current instantaneous power of the air conditioning module, the predicted total power consumption of the air conditioning module for the day, and the current remaining power of the energy storage module, so as to make the actual power consumption of the air conditioning module close to the target power consumption of the air conditioning module and extend the usage time of the air conditioning module. The specific functions and processing of this control unit 104 are further described in step S170.

[0164] The present invention addresses this issue by testing the instantaneous power of the air conditioning module under identical operating conditions (e.g., temperature conditions) or directly acquiring the instantaneous power of the air conditioning module from local historical data. The acquired instantaneous power is then fitted to obtain a fitting function. The temperature conditions of the day are detected, and the fitting function most similar to those conditions is selected to calculate the total predicted power consumption of the air conditioning module. The power consumption of the air conditioning module is limited by the ratio of its total predicted power consumption to the remaining battery power, ensuring that the power consumption does not exceed the remaining battery power, even at the expense of some user experience. Furthermore, by simulating the instantaneous power of the air conditioning module under identical operating conditions (e.g., temperature conditions), a fitting function P is established to represent the change of the instantaneous power P of the air conditioning module with time t under different operating conditions. n (t) is used to predict the total power consumption of the air conditioning module and limit the power of the air conditioning according to the fitting function. By comparing the predicted total power consumption of the air conditioning module with the remaining power of the battery in the actual battery module, the actual power consumption of the air conditioning module can be accurately controlled and kept within the target range.

[0165] In some embodiments, the control unit 104 controls the actual power consumption of the air conditioning module based on the current instantaneous power of the air conditioning module, the predicted total power consumption of the air conditioning module for the day, and the current remaining power of the energy storage module, including:

[0166] The control unit 104 is further configured to use the ratio of the current remaining power of the energy storage module to the predicted total power consumption of the air conditioning module for the day as an adjustment ratio (e.g., adjustment ratio K) for the actual power consumption of the air conditioning module; wherein, if the adjustment ratio for the actual power consumption of the air conditioning module is greater than 1, then the adjustment ratio for the actual power consumption of the air conditioning module is set to 1. The specific functions and processing of this control unit 104 are further described in step S410.

[0167] The control unit 104 is further configured to use the product of the current instantaneous power of the air conditioning module and the adjustment ratio of the actual power consumption of the air conditioning module as the limiting target power of the air conditioning module, such as the instantaneous power P of the air conditioning module. n (t) limiting target power P obj (t). For the specific functions and processing of the control unit 104, please refer to step S420.

[0168] The control unit 104 is further configured to control the compressor in the air conditioning module to operate at a reduced frequency if the current instantaneous power of the air conditioning module exceeds the limit target power of the air conditioning module after the first timing period of operation. The specific functions and processing of this control unit 104 are further described in step S430.

[0169] In some embodiments, the control unit 104 controls the compressor in the air conditioning module to operate at a reduced frequency, including: the control unit 104 is further configured to determine a target frequency for the compressor in the air conditioning module according to the following formula, and control the compressor in the air conditioning module to operate at the target frequency, so that the compressor in the air conditioning module operates at a reduced frequency:

[0170]

[0171] Where α is the proportional coefficient of the compressor in the air conditioning module, f obj Let f be the target frequency of the compressor in the air conditioning module, and f be the current frequency of the compressor in the air conditioning module. Because the limitation of the calculation in the previous calculation is power, the compressor frequency corresponding to the power is uncertain. Using this formula (3) can determine the compressor frequency more accurately, which is conducive to improving the precise control of the actual power consumption of the air conditioning module.

[0172] Specifically, such as Figure 8 As shown, the power consumption adjustment process of the photovoltaic-storage air conditioner also includes: in step 34, frequency reduction control is performed on the compressor in the air conditioning module, which can be achieved by the following formula:

[0173]

[0174] Where α is the proportional coefficient of the compressor, f obj Let f be the target frequency of the compressor and f be the current frequency of the compressor. By using formula (3) to calculate the target frequency of the compressor, the compressor can be operated at a reduced frequency, which can achieve precise control of the compressor frequency and improve the precise control of the actual power consumption of the air conditioning module.

[0175] The control unit 104 is further configured to time the compressor in the air conditioning module for reduced frequency operation, obtaining a second timeout period for the air conditioning module's operation. After the second timeout period reaches a set time threshold, it returns to the previous state and, based on the relationship between the instantaneous power of the air conditioning module and the time variation during the photovoltaic disappearance period in each of the n selected operating conditions, predicts the current instantaneous power of the air conditioning module and the predicted total power consumption of the air conditioning module for the day, according to the current outdoor temperature of the photovoltaic-storage air conditioner and the first timeout period for the air conditioning module's operation. This cycle continues until the photovoltaic disappearance period at the location of the photovoltaic-storage air conditioner for the day ends, at which point the normal operation logic of the photovoltaic-storage air conditioner is restored. The specific functions and processing of the control unit 104 are further described in step S440.

[0176] Specifically, such as Figure 8 As shown, the power consumption adjustment process of a photovoltaic-storage air conditioner also includes:

[0177] Step 32: Obtain the remaining battery power E in the battery module. rem Among them, the remaining battery capacity E in the battery module rem The unit of E and the predicted total power consumption total The units are consistent. When the remaining battery power E in the battery module is... rem When = 0, the battery capacity E in the battery module rem The air conditioning module shuts down when the power is depleted.

[0178] Step 33: Calculate the adjustment ratio K for the power consumption of the air conditioning module = the remaining battery power E in the battery module. rem / Total predicted power consumption of the air conditioning module for the day E total When the power consumption adjustment ratio K of the air conditioning module is greater than 1, that is, when the remaining battery power E in the battery module is... rem The daily predicted total power consumption E of the air conditioning module is greater than that of the air conditioning module. total The remaining battery capacity E in the battery module rem Sufficient to support the operation of the air conditioning module, the power consumption adjustment ratio K of the air conditioning module is set to 1, requiring the air conditioning module to maintain its current operating frequency, i.e., step 34; when the power consumption adjustment ratio K of the air conditioning module is less than 1, that is, when the remaining battery power E in the battery module is... remThe daily predicted total power consumption E of the air conditioning module is less than total The remaining battery capacity E in the battery module rem The frequency of the air conditioning module is insufficient to support its operation, so it is necessary to control the air conditioning module to operate at a reduced frequency, i.e., to execute step 34.

[0179] Step 34: Set the instantaneous power P of the air conditioning module n (t) limiting target power P obj (t)=P n (t)*K. Instantaneous power P of the air conditioning module detected every minute. n (t) Whether it exceeds the target power P of the air conditioning module obj (t), when the instantaneous power P of the air conditioning module n (t) exceeds the target power P of the air conditioning module obj When (t), the frequency of the compressor in the air conditioning module is reduced.

[0180] Step 35: Time for 30 minutes. After the timer expires, return to step 22 and repeat steps 31 to 35. The 30-minute timer allows the air conditioning module to run at the current frequency for 30 minutes before recalculating for variable frequency control, avoiding the need for frequency-based control and improving comfort.

[0181] The present invention predicts the overnight power consumption of the air conditioning module by fitting a function, and then adjusts and limits the overall power of the air conditioning module. The method of limiting the overall power of the air conditioning module is flexible and varied, taking into account both the energy efficiency of the air conditioning module and the user's comfort experience.

[0182] Since the processing and functions implemented by the device in this embodiment are basically the same as the embodiments, principles and examples of the aforementioned methods, any details not covered in the description of this embodiment can be found in the relevant descriptions in the aforementioned embodiments, and will not be repeated here.

[0183] According to an embodiment of the present invention, a photovoltaic-storage air conditioner corresponding to a control device for a photovoltaic-storage air conditioner is also provided. This photovoltaic-storage air conditioner may include the control device for a photovoltaic-storage air conditioner described above.

[0184] Since the processing and functions implemented by the photovoltaic storage air conditioner in this embodiment are basically the same as the embodiments, principles and examples of the aforementioned devices, any details not covered in the description of this embodiment can be found in the relevant descriptions in the aforementioned embodiments, and will not be repeated here.

[0185] According to an embodiment of the present invention, a computer program product corresponding to a photovoltaic-storage air conditioner is also provided, including a computer program that, when executed by a processor, implements the steps of the control method for the photovoltaic-storage air conditioner described above.

[0186] Since the processing and functions implemented by the product in this embodiment are basically the same as the aforementioned embodiments, principles and examples of photovoltaic air conditioning, any details not covered in this embodiment can be found in the relevant descriptions in the aforementioned embodiments, and will not be repeated here.

[0187] According to an embodiment of the present invention, a storage medium corresponding to the control method of a photovoltaic-storage air conditioner is also provided. The storage medium includes a stored program, wherein, when the program is executed, the device where the storage medium is located is controlled to perform the steps of the control method of the photovoltaic-storage air conditioner described above.

[0188] Since the processing and functions implemented by the storage medium in this embodiment are basically the same as the embodiments, principles and examples of the aforementioned methods, any details not covered in this embodiment can be found in the relevant descriptions in the aforementioned embodiments, and will not be repeated here.

[0189] In summary, it is readily understood by those skilled in the art that, without conflict, the aforementioned advantageous methods can be freely combined and superimposed.

[0190] The above description is merely an embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of the claims of the present invention.

Claims

1. A control method for a photovoltaic-storage air conditioning system, characterized in that, The photovoltaic-storage air conditioner includes a photovoltaic module, an air conditioning module, and an energy storage module; the control method of the photovoltaic-storage air conditioner includes: The historical outdoor temperature of the photovoltaic storage air conditioner's location during different dates and photovoltaic disappearance periods is obtained as the test condition; From the test conditions, select n dates from the historical outdoor temperatures where the difference between the lowest temperature and the lowest temperature is above a set temperature threshold. Use the outdoor temperatures of these n dates as the n selected conditions, where n is a positive integer. Under the n selected operating conditions, the instantaneous power of the air conditioning module is tested, and the relationship between the instantaneous power of the air conditioning module and the time change during the photovoltaic disappearance period under each of the n selected operating conditions is established. The outdoor temperature of the location of the photovoltaic-storage air conditioner during the period when the photovoltaic power disappears on the same day is obtained and recorded as the current outdoor temperature of the photovoltaic-storage air conditioner; the current power generation of the photovoltaic module is obtained; and the remaining battery power in the energy storage module is obtained and recorded as the current remaining battery power of the energy storage module. When the current power generation of the photovoltaic module is less than the set power threshold, the timing of the photovoltaic disappearance time period of the location of the photovoltaic-storage air conditioner on that day is started to obtain the first timing time of the air conditioner module operation; Based on the relationship between the instantaneous power of the air conditioning module and the time change during the photovoltaic disappearance period under each of the n selected operating conditions, the current instantaneous power of the air conditioning module and the predicted total power consumption of the air conditioning module for the day are predicted according to the current outdoor temperature of the photovoltaic-storage air conditioning and the first time of operation of the air conditioning module. Based on the current instantaneous power of the air conditioning module, the predicted total power consumption of the air conditioning module for the day, and the current remaining power of the energy storage module, the actual power consumption of the air conditioning module is controlled, including: using the ratio of the current remaining power of the energy storage module to the predicted total power consumption of the air conditioning module for the day as the adjustment ratio of the actual power consumption of the air conditioning module; wherein, if the adjustment ratio of the actual power consumption of the air conditioning module is greater than 1, then the adjustment ratio of the actual power consumption of the air conditioning module is set to 1; using the product of the current instantaneous power of the air conditioning module and the adjustment ratio of the actual power consumption of the air conditioning module as the limiting target power of the air conditioning module; if the current instantaneous power of the air conditioning module exceeds the limiting target power of the air conditioning module after the first time period of operation, then the compressor in the air conditioning module is controlled to operate at a reduced frequency.

2. The control method for photovoltaic-storage air conditioning according to claim 1, characterized in that, Under the n selected operating conditions, the instantaneous power of the air conditioning module is tested, and a relationship is established between the instantaneous power of the air conditioning module and the time variation during the photovoltaic disappearance period under each of the n selected operating conditions, including: With the target temperature of the air conditioner remaining constant, the air conditioning module is operated under each of the n selected operating conditions, and the instantaneous power of the air conditioning module during operation under each of the n selected operating conditions is determined. For each of the n selected operating conditions, with the time within the photovoltaic disappearance period as the independent variable and the instantaneous power of the air conditioning module as the dependent variable, a fitting function for the change of the instantaneous power of the air conditioning module with time under each selected operating condition is established, which serves as the relationship between the instantaneous power of the air conditioning module and the time within the photovoltaic disappearance period under each of the n selected operating conditions.

3. The control method for photovoltaic-storage air conditioning according to claim 2, characterized in that, in, The relationship between the instantaneous power of the air conditioning module and the time period during which the photovoltaic power disappears under each of the n selected operating conditions includes any of the following formulas: ； ； ； Among them, P n (t) represents the instantaneous power of the air conditioning module under the nth selected operating condition, and t represents the time within the photovoltaic disappearance period; a, b, c, d, f, g, h, and m are all calculation coefficients, and the calculation coefficients are different under different selected operating conditions.

4. The control method for a photovoltaic-storage air conditioner according to any one of claims 1 to 3, characterized in that, Based on the relationship between the instantaneous power of the air conditioning module and the time change during the photovoltaic disappearance period under each of the n selected operating conditions, and according to the current outdoor temperature of the photovoltaic-storage air conditioner and the first timing of the air conditioning module's operation, the current instantaneous power of the air conditioning module and the predicted total power consumption of the air conditioning module for the day are predicted, including: From the n selectable operating conditions, select one that is the same as or differs from the current outdoor temperature of the photovoltaic-storage air conditioner within the set temperature range; Based on the relationship between the instantaneous power of the air conditioning module under the selected operating condition and the time change during the photovoltaic disappearance period, the instantaneous power of the air conditioning module corresponding to the first time of operation of the air conditioning module under the selected operating condition is calculated using the first time of operation of the air conditioning module as the independent variable, and is used as the current instantaneous power of the air conditioning module. Based on the current instantaneous power of the air conditioning module, the predicted total power consumption of the air conditioning module for the day is calculated. The predicted total power consumption of the air conditioning module for the day is calculated based on the predicted target power of the air conditioning module, including: Based on the predicted target power of the air conditioning module, an integral calculation is performed over the time interval from the first timing time to the end of the photovoltaic disappearance period to calculate the total predicted target power of the air conditioning module within that time interval, which is used as the predicted total power consumption of the air conditioning module for the day.

5. The control method for a photovoltaic-storage air conditioning system according to any one of claims 1 to 3, characterized in that, Based on the current instantaneous power of the air conditioning module, the predicted total power consumption of the air conditioning module for the day, and the current remaining power of the energy storage module, the actual power consumption of the air conditioning module is controlled, which further includes: The time for the compressor in the air conditioning module to operate at reduced frequency is timed to obtain the second time of operation of the air conditioning module. After the second time of operation of the air conditioning module reaches a set time threshold, the process returns to the previous state to re-predict the current instantaneous power of the air conditioning module and the predicted total power consumption of the air conditioning module for the day based on the relationship between the instantaneous power of the air conditioning module and the time change during the photovoltaic disappearance period under each of the n selected operating conditions, according to the current outdoor temperature of the photovoltaic-storage air conditioning and the first time of operation of the air conditioning module.

6. The control method for photovoltaic-storage air conditioning according to claim 4, characterized in that, Based on the current instantaneous power of the air conditioning module, the predicted total power consumption of the air conditioning module for the day, and the current remaining power of the energy storage module, the actual power consumption of the air conditioning module is controlled, which further includes: The time for the compressor in the air conditioning module to operate at reduced frequency is timed to obtain the second time of operation of the air conditioning module. After the second time of operation of the air conditioning module reaches a set time threshold, the process returns to the previous state to re-predict the current instantaneous power of the air conditioning module and the predicted total power consumption of the air conditioning module for the day based on the relationship between the instantaneous power of the air conditioning module and the time change during the photovoltaic disappearance period under each of the n selected operating conditions, according to the current outdoor temperature of the photovoltaic-storage air conditioning and the first time of operation of the air conditioning module.

7. The control method for photovoltaic-storage air conditioning according to claim 5, characterized in that, Controlling the compressor in the air conditioning module to operate at a reduced frequency includes: The target frequency of the compressor in the air conditioning module is determined according to the following formula, and the compressor in the air conditioning module is controlled to operate at the target frequency, so that the compressor in the air conditioning module operates at a reduced frequency: （3）； in, α This refers to the proportional coefficient of the compressor in the air conditioning module. f obj The target frequency of the compressor in the air conditioning module. f This refers to the current frequency of the compressor in the air conditioning module.

8. The control method for photovoltaic-storage air conditioning according to claim 6, characterized in that, Controlling the compressor in the air conditioning module to operate at a reduced frequency includes: The target frequency of the compressor in the air conditioning module is determined according to the following formula, and the compressor in the air conditioning module is controlled to operate at the target frequency, so that the compressor in the air conditioning module operates at a reduced frequency: （3）； in, α This refers to the proportional coefficient of the compressor in the air conditioning module. f obj The target frequency of the compressor in the air conditioning module. f This refers to the current frequency of the compressor in the air conditioning module.

9. A control device for a photovoltaic-storage air conditioner that uses the control method for a photovoltaic-storage air conditioner as described in claim 1 to control the photovoltaic-storage air conditioner, characterized in that, The photovoltaic-storage air conditioner includes a photovoltaic module, an air conditioning module, and an energy storage module; the control device for the photovoltaic-storage air conditioner includes: The acquisition unit is configured to acquire the historical outdoor temperature of the photovoltaic disappearance period on different dates at the location of the photovoltaic-storage air conditioner, as a test condition; The control unit is configured to select n dates from the test conditions where the difference between the lowest historical outdoor temperature and the lowest temperature is above a set temperature threshold, and use the outdoor temperatures of the n dates as the n selected conditions, where n is a positive integer; The control unit is further configured to test the instantaneous power of the air conditioning module under the n selected operating conditions, and establish a relationship between the instantaneous power of the air conditioning module and the time change during the photovoltaic disappearance period under each of the n selected operating conditions. The acquisition unit is further configured to acquire the outdoor temperature during the photovoltaic disappearance period of the day at the location of the photovoltaic-storage air conditioner, and record it as the current outdoor temperature of the photovoltaic-storage air conditioner; acquire the current power generation of the photovoltaic module; and acquire the remaining battery power in the energy storage module, and record it as the current remaining battery power of the energy storage module. The control unit is also configured to start timing the photovoltaic disappearance time period of the day at the location of the photovoltaic-storage air conditioner when the current power generation of the photovoltaic module is less than a set power threshold, so as to obtain the first timing time of the air conditioner module operation. The control unit is further configured to predict the current instantaneous power of the air conditioning module and the predicted total power consumption of the air conditioning module for the day, based on the relationship between the instantaneous power of the air conditioning module and the time change during the photovoltaic disappearance period in each of the n selected operating conditions, according to the current outdoor temperature of the photovoltaic-storage air conditioner and the first time of operation of the air conditioning module. The control unit is further configured to control the actual power consumption of the air conditioning module based on the current instantaneous power of the air conditioning module, the predicted total power consumption of the air conditioning module for the day, and the current remaining power of the energy storage module.

10. A photovoltaic-storage air conditioner, characterized in that, include: The control device for a photovoltaic-storage air conditioner as described in claim 9.

11. A storage medium, characterized in that, The storage medium includes a stored program, wherein, when the program is executed, it controls the device containing the storage medium to perform the control method of any one of claims 1 to 8 for a photovoltaic-storage air conditioner.

12. A computer program product, comprising a computer program, characterized in that, When the computer program is executed by the processor, it implements the steps of the control method for the photovoltaic-storage air conditioner as described in any one of claims 1 to 8.

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