Control method and control device of air conditioning parameters and photovoltaic air conditioning system

Abstract

The application provides a control method and device of air conditioner parameters and a photovoltaic air conditioner system. The control method is applied to the photovoltaic air conditioner system, the photovoltaic air conditioner system at least comprises a photovoltaic panel and an air conditioner, the air conditioner is at least powered by the photovoltaic panel, and the method comprises the following steps: acquiring an output power of the photovoltaic panel to obtain a photovoltaic output power; acquiring an outdoor temperature value in the case that the photovoltaic output power is greater than a first preset threshold value, wherein the first preset threshold value is a minimum power value output by the photovoltaic panel in the case that the weather condition is sunny; and increasing a reliability parameter of the air conditioner in the case that the air conditioner is in a cooling mode and the outdoor temperature value is greater than a first preset temperature value, wherein the reliability parameter is a parameter for safe operation of the air conditioner and at least comprises an exhaust temperature protection value and a protection current value. Through the application, the problem that the reliability parameter of the air conditioner in the prior art cannot be changed according to the change of the weather condition is solved.

Description

Technical Field

[0001] This application relates to the field of air conditioning control, and more specifically, to a method for controlling air conditioning parameters, a control device, and a photovoltaic air conditioning system. Background Technology

[0002] With the continuous progress of society, air conditioners have become an indispensable device in people's lives, playing a vital role in production and daily life. While providing comfort, they also accelerate energy consumption. Air conditioners consume a significant amount of electricity during operation. To reduce reliance on non-renewable energy sources and decrease energy consumption, my country is currently promoting the application of photovoltaics, using photovoltaic modules to convert solar energy into electricity and supply it to air conditioning systems. However, in hot weather and under high ambient temperatures, the reliable operating parameters of air conditioners (exhaust protection values, protection current, etc.) remain within critical ranges and cannot adapt to changes in weather conditions, resulting in unsatisfactory cooling performance.

[0003] Therefore, how to adjust the reliability parameters of photovoltaic air conditioning systems according to weather conditions to achieve satisfactory air conditioning performance is a problem that needs to be solved. Summary of the Invention

[0004] The main objective of this application is to provide a method, device, and photovoltaic air conditioning system for controlling air conditioning parameters, so as to at least solve the problem that the reliability parameters of air conditioners in the prior art cannot be changed according to changes in weather conditions.

[0005] To achieve the above objectives, according to one aspect of this application, a method for controlling air conditioning parameters is provided. The method is applied to a photovoltaic air conditioning system, which includes at least a photovoltaic panel and an air conditioner, wherein the air conditioner is powered at least by the photovoltaic panel. The method includes: acquiring the output power of the photovoltaic panel to obtain a photovoltaic output power; acquiring an outdoor temperature value when the photovoltaic output power is greater than a first preset threshold, wherein the first preset threshold is the minimum power output value of the photovoltaic panel under sunny weather conditions; and increasing the reliability parameters of the air conditioner when the air conditioner is in cooling mode and the outdoor temperature value is greater than the first preset temperature value, wherein the reliability parameters are parameters that ensure the safe operation of the air conditioner and include at least an exhaust temperature protection value and a protection current value.

[0006] Optionally, when the air conditioner is in cooling mode and the outdoor temperature is greater than a first preset temperature value, increasing the reliability parameter of the air conditioner includes: obtaining an initial value of the reliability parameter to obtain an initial reliability parameter value; obtaining the value of the reliability parameter at the current moment to obtain a current reliability parameter value; calculating the absolute value of the difference between the initial reliability parameter value and the current reliability parameter value; and increasing the reliability parameter when the absolute value of the difference is less than a second preset threshold.

[0007] Optionally, obtaining the value of the reliability parameter at the current moment to obtain the current reliability parameter value includes: detecting the value of the reliability parameter at a preset time interval to obtain the current reliability parameter value corresponding to the current moment; increasing the reliability parameter when the absolute value of the difference is less than a second preset threshold, further including: a reduction step, decreasing the preset time interval when the absolute value of the difference is greater than or equal to the second preset threshold and less than a third preset threshold, wherein the third preset threshold is greater than the second preset threshold; a calculation step, detecting the value of the reliability parameter at the reduced preset time interval to obtain the updated current reliability parameter value, and calculating the absolute value of the difference between the initial reliability parameter value and the updated current reliability parameter value; and an adjustment step, increasing the reliability parameter when the absolute value of the difference is less than the second preset threshold.

[0008] Optionally, if the absolute value of the difference is less than a second preset threshold, increasing the reliability parameter further includes: if the absolute value of the difference between the initial reliability parameter value and the updated current reliability parameter value is greater than or equal to the second preset threshold and less than a third preset threshold, repeating the reduction step and the calculation step at least once in sequence until the absolute value of the difference is less than the second preset threshold; increasing the reliability parameter.

[0009] Optionally, when the air conditioner is in cooling mode and the outdoor temperature value is greater than a first preset temperature value, the control method further includes: increasing the operating parameters of the air conditioner, wherein the operating parameters include at least the operating frequency and the fan speed.

[0010] Optionally, the control method further includes: when the air conditioner is in cooling mode and the outdoor temperature value is greater than the second preset temperature value and less than or equal to the first preset temperature value, controlling the reliability parameter and operating parameter to remain unchanged, wherein the operating parameter includes at least the operating frequency and the fan speed.

[0011] Optionally, the control method further includes: when the air conditioner is in cooling mode and the outdoor temperature value is less than or equal to a second preset temperature value, controlling the reliability parameter to remain unchanged; acquiring the optimal indoor temperature value and the indoor temperature detection value, wherein the optimal indoor temperature value is a preset optimal indoor temperature value, and the indoor temperature detection value is the actual indoor temperature value measured in real time; calculating the absolute value of the difference between the indoor temperature detection value and the optimal indoor temperature value, and when the absolute value of the difference is greater than a preset temperature difference, reducing the operating parameters so that the absolute value of the difference between the indoor temperature detection value and the optimal indoor temperature value is less than the preset temperature difference, wherein the operating parameters include at least the operating frequency and the fan speed.

[0012] Optionally, the control method further includes: keeping the reliability parameter unchanged when the photovoltaic output power is less than or equal to the first preset threshold.

[0013] According to another aspect of this application, a control device for air conditioning parameters is provided. The control device is applied to a photovoltaic air conditioning system, which includes at least a photovoltaic panel and an air conditioner. The air conditioner is powered at least by the photovoltaic panel. The control device includes: a first acquisition unit for acquiring the output power of the photovoltaic panel to obtain photovoltaic output power; a second acquisition unit for acquiring an outdoor temperature value when the photovoltaic output power is greater than a first preset threshold, wherein the first preset threshold is the minimum power output value of the photovoltaic panel under sunny weather conditions; and an adjustment unit for increasing the reliability parameters of the air conditioner when the air conditioner is in cooling mode and the outdoor temperature value is greater than the first preset temperature value, wherein the reliability parameters are parameters for ensuring the safe operation of the air conditioner and include at least an exhaust temperature protection value and a protection current value.

[0014] According to another aspect of this application, a photovoltaic air conditioning system is provided, including a photovoltaic panel and an air conditioner, the air conditioner including: one or more processors, a memory, and one or more programs, wherein the one or more programs are stored in the memory and configured to be executed by the one or more processors, the one or more programs including for performing any of the control methods described above.

[0015] Applying the technical solution of this application, firstly, the output power of the photovoltaic panel is obtained, and it is determined whether the photovoltaic output power is greater than a first preset threshold. If the photovoltaic output power is greater than the first preset threshold, the outdoor temperature value is obtained, and it is determined whether the outdoor temperature value is greater than a first preset temperature value. In cooling mode, if the outdoor temperature value is greater than the first preset temperature value, it indicates that the outdoor weather is sunny and the temperature is high. To ensure indoor temperature comfort, the air conditioner's operating parameters need to be at a higher level, correspondingly increasing the air conditioner's reliability parameters. This allows the air conditioner's reliability parameters to be adjusted according to weather conditions, maintaining reliable operation. Compared with existing technologies where the air conditioner's reliability parameters cannot be adjusted according to weather conditions, this application can determine the current weather conditions based on the photovoltaic panel's output power and further adjust the air conditioner's reliability parameters based on the day's outdoor temperature value. This allows for flexible adjustment of reliability parameters according to weather conditions, improving the comfort of the air-conditioned environment while ensuring reliable air conditioner operation. Therefore, it solves the problem in existing technologies where the air conditioner's reliability parameters cannot change according to weather conditions, achieving the goal of improving the comfort of the air-conditioned environment. Attached Figure Description

[0016] The accompanying drawings, which form part of this application, are used to provide a further understanding of this application. The illustrative embodiments and descriptions of this application are used to explain this application and do not constitute an undue limitation of this application. In the drawings:

[0017] Figure 1 A flowchart illustrating a method for controlling air conditioning parameters according to an embodiment of this application is shown.

[0018] Figure 2 A schematic diagram of a photovoltaic air conditioning system in a specific air conditioning parameter control method provided in an embodiment of this application is shown;

[0019] Figure 3 A structural block diagram of an air conditioning parameter control device provided in an embodiment of this application is shown. Detailed Implementation

[0020] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0021] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of protection of the present application.

[0022] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate for the embodiments of this application described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0023] As described in the background section, the reliability parameters of air conditioners in the prior art cannot be changed according to changes in weather conditions. In order to solve the problem that the reliability parameters of air conditioners cannot be changed according to changes in weather conditions, the embodiments of this application provide a method for controlling air conditioner parameters, a control device, and a photovoltaic air conditioning system.

[0024] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

[0025] Figure 1 This is a flowchart of a method for controlling air conditioning parameters according to an embodiment of this application. The control method is applied to a photovoltaic air conditioning system, which includes at least a photovoltaic panel and an air conditioner, wherein the air conditioner is powered at least by the photovoltaic panel. Figure 1 As shown, the method includes the following steps:

[0026] Step S101: Obtain the output power of the photovoltaic panel to obtain the photovoltaic output power;

[0027] Specifically, the main components of the aforementioned photovoltaic air conditioning system are photovoltaic panels and air conditioners. The photovoltaic panels convert solar energy into electrical energy to power the air conditioner, reducing the consumption of renewable energy. The air conditioner is intelligently controlled based on the output power of the photovoltaic panels or the amount of electricity generated. This is achieved by first acquiring the power output of the photovoltaic panels, which can be detected by corresponding sensors. Assume the outdoor photovoltaic installation area is S, with units of square meters (m²). 2The photovoltaic conversion efficiency is K, and the illuminance is Q, with units of watts per square meter (W / m²). 2 The output power of photovoltaic power generation can be calculated as: P = K * S * Q, where P is in W. The intensity of sunlight differs between sunny and cloudy / rainy days, resulting in different power outputs.

[0028] Step S102: When the photovoltaic output power is greater than the first preset threshold, obtain the outdoor temperature value, wherein the first preset threshold is the minimum power output value of the photovoltaic panel when the weather is sunny.

[0029] Specifically, the obtained photovoltaic output power is compared with a pre-set first preset threshold. If the photovoltaic output power is greater than the first preset threshold, it indicates that the output power of the photovoltaic panel is greater than the minimum output power under sunny weather conditions, thus confirming that the weather is sunny. The first preset threshold is determined by finding the maximum and minimum power output under sunny conditions through multiple different photovoltaic power values ​​obtained under sunny conditions. The minimum power value is used as the first preset threshold, and conditions greater than the first preset threshold are considered sunny weather. Under sunny conditions, the reliability parameters of the air conditioner need to be adjusted according to the specific outdoor temperature. Therefore, an outdoor temperature sensor is used to obtain the outdoor temperature value so that the air conditioner operates according to different reliability parameters under different temperature conditions, ensuring the cooling effect of the air conditioner while reducing energy consumption.

[0030] Step S103: When the air conditioner is in cooling mode and the outdoor temperature is greater than the first preset temperature value, increase the reliability parameters of the air conditioner. The reliability parameters are parameters that enable the air conditioner to operate safely and include at least the exhaust temperature protection value and the protection current value.

[0031] Specifically, when the user turns on the air conditioner and sets it to cooling mode, the outdoor temperature value has been obtained through the above steps. This outdoor temperature value is compared with a first preset threshold, which is a pre-set temperature indicating an extremely high outdoor temperature. In practical applications, this can be 36°C. If the outdoor temperature value is higher than the first preset threshold, it indicates that the outdoor weather is sunny and extremely hot. In this case, all operating parameters of the air conditioner need to operate at a high level to provide the user with a comfortable indoor environment. Therefore, the reliability parameters also need to be correspondingly improved. Reliability parameters represent the parameters that enable the air conditioner to operate safely during operation. These parameters include the exhaust temperature protection value, protection current value, and maximum external pipe temperature. Exhaust temperature protection is one type of compressor temperature protection in air conditioners. The exhaust temperature during compressor operation cannot be too high, otherwise it will cause increased compressor power consumption and deterioration in performance. Therefore, a certain exhaust temperature protection value needs to be set; that is, the exhaust temperature value of the air conditioner cannot exceed the exhaust temperature protection value. The protection current refers to the maximum operating current that the air conditioner compressor cannot exceed during operation, and the maximum external pipe temperature refers to the maximum temperature that the air conditioner condenser cannot exceed. In high-temperature conditions, increasing reliability parameters allows the air conditioner to operate at higher parameters, thus ensuring the comfort of the indoor environment. This control method combines the daily electricity generated by the photovoltaic panel with the outdoor ambient temperature sensing module to determine the day's weather conditions and adjust the air conditioner's reliability parameters accordingly. In hot weather with high ambient temperatures, the air conditioning system experiences a relatively large cooling load. Adjusting the air conditioning system's reliability parameters based on outdoor sunlight intensity allows the system to operate normally at high frequency and high speed. If there is ample space at the outdoor unit's installation location, the photovoltaic panels can be installed at the outdoor unit's air inlet to create a lower ambient temperature relative to the outdoor environment, improving the air conditioner's cooling efficiency and achieving energy savings.

[0032] In this embodiment, firstly, the output power of the photovoltaic panel is obtained, and it is determined whether the photovoltaic output power is greater than a first preset threshold. If the photovoltaic output power is greater than the first preset threshold, the outdoor temperature value is obtained and determined whether the outdoor temperature value is greater than a first preset temperature value. If the outdoor temperature value is greater than the first preset temperature value in cooling mode, it indicates that the outdoor weather is sunny and the temperature is high. To ensure indoor temperature comfort, the air conditioner's operating parameters need to be at a higher level, correspondingly increasing the air conditioner's reliability parameters. This allows the air conditioner's reliability parameters to be adjusted according to weather conditions, maintaining reliable operation. Compared to existing technologies where the air conditioner's reliability parameters cannot be adjusted according to weather conditions, this application can determine the current weather conditions based on the photovoltaic panel's output power and further adjust the air conditioner's reliability parameters based on the day's outdoor temperature value. This allows for flexible adjustment of reliability parameters according to weather conditions, improving the comfort of the air-conditioned environment while ensuring reliable air conditioner operation. Therefore, it solves the problem in existing technologies where the air conditioner's reliability parameters cannot change according to weather conditions, achieving the goal of improving the comfort of the air-conditioned environment.

[0033] In specific implementation, step S103 can be achieved through the following steps: obtaining the initial value of the reliability parameter; obtaining the current value of the reliability parameter; calculating the absolute value of the difference between the initial reliability parameter value and the current reliability parameter value; and increasing the reliability parameter if the absolute value of the difference is less than a second preset threshold. This method detects the current reliability parameter value and subtracts it from the initial reliability parameter value to obtain the absolute value of the difference. If the absolute value of the difference is less than a second preset threshold, the reliability parameter is increased. That is, when the current reliability parameter value is about to reach a preset critical value (i.e., the initial reliability parameter value), the critical value of the reliability parameter is increased. The current reliability parameter value reflects the operating status of the air conditioner in real time. A larger current reliability parameter value indicates that the air conditioner needs to operate under high load to achieve a better cooling effect. This allows for real-time adjustment of the reliability parameter value, enabling the air conditioner to achieve a better cooling effect and improve comfort.

[0034] In some optional implementations, the first preset temperature is 36°C, the air conditioner is in cooling mode, and the outdoor temperature is greater than 36°C, indicating an ultra-high temperature outdoor environment. The initial reliability parameter value is the critical value that the air conditioner must meet during operation in the initial state; that is, the air conditioner cannot exceed the aforementioned initial reliability parameter value during operation to ensure safe operation. The initial reliability parameter value is T, where T is the exhaust temperature protection value. b The protection current value is I0, and the maximum external tube temperature is T.wg The current reliability parameter values ​​are the actual values ​​of the aforementioned reliability parameters during actual operation of the air conditioner. These values ​​can be obtained through measurement using the corresponding sensors, and are respectively the exhaust temperature protection value T. 排 The protection current value is I 保 The highest outer tube temperature is T 管 When T is satisfied b -T 排 If the value is less than 1, the exhaust temperature protection value T will be adjusted. b Adjust to T b +10, in I0-I 保 If the current is less than 0.2, adjust the protection current value I0 to I0+2, and then adjust the protection current value T. wg -T 管 If the temperature is less than 1, adjust the highest external pipe temperature to T. wg +10 means that if the absolute value of the difference is less than the second preset threshold, the reliability parameter value is increased, the critical value during the operation of the air conditioner is increased, and the air conditioner can operate under a higher load condition, such as a higher operating frequency, to meet the cooling needs.

[0035] To more flexibly adjust the reliability parameters of the air conditioner, the above-mentioned method of obtaining the current reliability parameter value at the current moment can be achieved through the following steps: detecting the reliability parameter value at a preset time interval to obtain the current reliability parameter value corresponding to the current moment; the above step S103 can also be achieved through the following methods: a reduction step, where the preset time interval is reduced when the absolute value of the difference is greater than or equal to the second preset threshold and less than the third preset threshold, wherein the third preset threshold is greater than the second preset threshold; a calculation step, where the reliability parameter value is detected at the reduced preset time interval to obtain the updated current reliability parameter value, and the absolute value of the difference between the initial reliability parameter value and the updated current reliability parameter value is calculated; an adjustment step, where the reliability parameter is increased when the absolute value of the difference is less than the second preset threshold. This method detects the reliability parameter value at a preset time interval and reduces the preset time interval when the absolute value of the difference meets the above conditions. This allows for increasing the detection frequency of the reliability parameter when the absolute value of the difference is small, thus enabling timely adjustment of the reliability parameter.

[0036] Specifically, the preset time interval can be one minute, meaning that every minute the exhaust temperature value corresponding to the exhaust temperature protection value, the current value corresponding to the protection current value, and the outer pipe temperature corresponding to the highest outer pipe temperature value are detected to obtain the current reliability parameter value at the current moment. Assuming the second preset thresholds are 1, 0.2, and 1 respectively, that is, when T is satisfied... b -T 排<1, I0-I 保 <0.2, T wg -T 管 <1, the third preset thresholds are 4, 0.5, and 3 respectively, that is, when T is satisfied b -T 排 <4,I0-I 保 <0.5, T wg -T 管 <3. Reduce the preset time interval from one minute to five seconds, which increases the detection frequency of the reliability parameters. This is because the current reliability parameter value is approaching a critical value, requiring increased monitoring to adjust the critical value promptly if it exceeds it. After increasing the detection frequency, obtain the updated current reliability parameters and continue calculating the difference between the current and initial reliability parameters. If the absolute value of this difference is less than a second preset threshold, increase the reliability parameter.

[0037] Step S103 can also be implemented in other ways, for example: if the absolute value of the difference between the initial reliability parameter value and the updated current reliability parameter value is greater than or equal to the second preset threshold and less than the third preset threshold, repeat the reduction step and the calculation step at least once until the absolute value of the difference is less than the second preset threshold; then increase the reliability parameter. This method, after increasing the detection frequency of the reliability parameter (i.e., when the absolute value of the updated difference is greater than or equal to the second preset threshold and less than the third preset threshold), repeats the reduction step and the calculation step until the absolute value of the difference is less than the second preset threshold. This allows for determining whether to increase the reliability parameter based on the actual change in the reliability parameter value, making the adjustment of the reliability parameter more accurate.

[0038] In the specific implementation process, after reducing the preset time interval as mentioned above, which increases the detection frequency of the reliability parameter, the difference between the updated current reliability parameter and the initial reliability parameter is calculated. If the absolute value of the difference is still greater than or equal to the second preset threshold and less than the third preset threshold, that is, if the condition for increasing the reliability parameter is not met, the preset time interval is reduced until the absolute value of the difference is less than the second preset threshold, and then the reliability parameter is increased.

[0039] To improve user comfort, in some embodiments, step S103 can also be achieved by increasing the operating parameters of the air conditioner, wherein the operating parameters include at least the operating frequency and fan speed. This method automatically adjusts the values ​​of the operating parameters when the outdoor temperature is high, resulting in better cooling performance and improved user comfort.

[0040] Specifically, as mentioned above, when the first preset temperature value is 36℃, an outdoor temperature value greater than the first preset temperature value indicates that the outdoor ambient temperature is in an ultra-high temperature state. If the original state is maintained, it is not enough to keep the indoor ambient temperature within the comfortable temperature range. At this time, the operating parameters are adjusted, and the air conditioner's operating frequency is increased to Z0+8 and the fan speed is increased to R0+80. Z0 represents the air conditioner's operating frequency before adjustment, and R0 represents the air conditioner's fan speed before adjustment.

[0041] In some embodiments, the method further includes the following steps: when the air conditioner is in cooling mode and the outdoor temperature is greater than a second preset temperature value but less than or equal to a first preset temperature value, the reliability parameters and operating parameters are kept unchanged, wherein the operating parameters include at least the operating frequency and fan speed. This method indicates that the outdoor temperature is generally high when it is greater than the second preset temperature but less than or equal to the first preset temperature. In this case, no adjustment to the air conditioner is needed, allowing it to maintain good comfort during normal operation without requiring additional adjustments, thus avoiding waste of electrical energy.

[0042] In the specific implementation process, assuming the first preset temperature value is 36℃ and the second preset temperature value is 32℃, when 32℃ < outdoor temperature value ≤ 36℃, the ambient temperature is a relatively common temperature. At this time, the air conditioning system can maintain normal operation and can also monitor the indoor ambient temperature in real time.

[0043] To save energy while maintaining comfort when outdoor temperatures are low, the method further includes the following steps: When the air conditioner is in cooling mode and the outdoor temperature is less than or equal to a second preset temperature value, the reliability parameters are kept constant; the optimal indoor temperature and the detected indoor temperature value are obtained, wherein the optimal indoor temperature is a preset, most suitable indoor temperature, and the detected indoor temperature is the actual indoor temperature measured in real time; the absolute value of the difference between the detected indoor temperature and the optimal indoor temperature is calculated, and if the absolute value of the difference is greater than a preset temperature difference, the operating parameters are reduced so that the absolute value of the difference between the detected indoor temperature and the optimal indoor temperature is less than the preset temperature difference, wherein the operating parameters include at least the operating frequency and the fan speed. This method, when outdoor temperatures are low, keeps the reliability parameters constant and only reduces the operating parameters. Since the air conditioner does not need to perform significant cooling in such weather conditions, reducing the operating parameters ensures both indoor comfort and energy savings.

[0044] Specifically, assuming the second preset temperature is 32℃, and the outdoor temperature is less than 32℃, the outdoor ambient temperature is relatively lower. In this case, the air conditioner's operating frequency can be reduced to Z0-4, the fan speed to R0-50, and the reliable operation exhaust protection value is T. b The protection current is I0, and the maximum external tube temperature is T. wg Simply maintain the initial value. In this case, a low-frequency, low-speed operating mode is maintained, which saves power. Then, the indoor ambient temperature is monitored in real time, measured every minute, and the indoor temperature value is recorded as T. in1 T in2 T in3 ...T inN It calculates the absolute value of the difference between the measured indoor temperature and the optimal indoor temperature. If the absolute value is greater than the preset temperature difference, such as 1.5℃, it continues to reduce the operating frequency and fan speed to control the indoor environment, i.e., the measured indoor temperature, to always be within T. in =T0±1.5℃ state.

[0045] In some optional embodiments, the method further includes: keeping the reliability parameter unchanged when the photovoltaic output power is less than or equal to the first preset threshold. This method, where the photovoltaic output power is less than the first preset threshold, indicates that the photovoltaic output power is low and the weather conditions may be cloudy or rainy. Therefore, the reliability parameter of the air conditioner is not adjusted, ensuring its safe operation in cloudy or rainy weather.

[0046] In its implementation, the aforementioned photovoltaic air conditioning system also includes an energy storage system and a mains power system. The energy storage system stores the electrical energy generated by the photovoltaic panels for powering the air conditioner, while the mains power is supplied to the air conditioner through the city's power grid. When the outdoor photovoltaic output power is detected to be less than a first preset threshold, i.e., during cloudy or rainy weather, the sunlight intensity is poor, and the photovoltaic panels generate electricity slowly or not at all. In this case, the power required by the air conditioning system will be supplied by the energy storage system or the mains power. Under these weather conditions, if the electricity consumption period coincides with the lowest electricity price, the mains power can be used preferentially. Under other conditions, the photovoltaic power source's energy storage system is used preferentially. During cloudy or rainy weather, since the dampness has a significant impact on the reliable operation of the air conditioner, the system can be operated at its initial reliability parameters. Throughout the entire process of the above control method, photovoltaic energy is used preferentially, and the use of mains power is minimized. This not only significantly reduces the system's operating costs but also generates some profit by selling excess electricity.

[0047] To enable those skilled in the art to better understand the technical solution of this application, the implementation process of the air conditioning parameter control method of this application will be described in detail below with reference to specific embodiments.

[0048] This embodiment relates to a specific method for controlling air conditioning parameters, applied to a photovoltaic air conditioning system, such as... Figure 2 As shown, the photovoltaic air conditioning system includes: a photovoltaic system 100, an air conditioning system 200, an energy storage system 300, and a mains power supply 400. The energy storage system 300 stores energy in the photovoltaic system 100 and supplies energy to the air conditioning system 200. The air conditioning system 200 can also be directly powered by the photovoltaic system 100 via DC / AC. The photovoltaic system 100 can also sell its output electricity to the mains power supply 400, which can also supply power to the air conditioning system 200. The above control method includes the following steps:

[0049] Step S1: The air conditioner is in cooling mode. When the outdoor photovoltaic output power is detected to be greater than the first preset threshold, indicating that the outdoor weather is sunny, the outdoor temperature value T is obtained. out ;

[0050] Step S2: When 24℃ < T out When the temperature is ≤32℃ (second preset temperature value), reduce the air conditioner's operating frequency to Z0-4 and the fan speed to R0-50 (operating frequency and fan speed are operating parameters), and set the exhaust temperature protection value to T. b The protection current value is I0, and the maximum external tube temperature is T. wg Simply maintain the initial values ​​(exhaust temperature protection value, protection current value, and maximum external pipe temperature value are reliability parameters and should remain unchanged). At this time, the indoor ambient temperature will be monitored in real time, checked every minute, and recorded as T. in1 T in2 T in3 ...T inN (Indoor temperature reading) Controlling the indoor environment to T at all times. in =T0±1.5℃, where T0 is the optimal indoor temperature;

[0051] Step S3: When 32℃ (second preset temperature value) < T out When the ambient temperature is ≤36℃ (the first preset temperature value), this is a common ambient temperature in cooling mode. At this temperature, the air conditioning system is kept in normal operating condition, meaning its reliability and operating parameters remain unchanged, and the indoor temperature T is monitored in real time. in ;

[0052] Step S4: When 36℃ (first preset temperature value) ≤ T out At temperatures below 42℃, the outdoor ambient temperature is considered extremely high. Maintaining the original operating conditions is insufficient to keep the indoor temperature within a comfortable range. Therefore, the air conditioner's operating frequency is increased to Z0+8, and the fan speed is increased to R0+80 (increasing operating parameters). Under these operating conditions, the exhaust temperature T of the air conditioning system is monitored every minute.排 、I0、T 管 (Initial reliability parameter values);

[0053] Step S5: Monitor the system exhaust every minute and record it as T. 排1 T 排2 T 排3 ...T 排n When T is detected 排n =T b When the temperature reaches -4 (greater than or equal to the second preset threshold and less than the third preset threshold), adjust the exhaust monitoring to be performed every 5 seconds. If T is detected... 排n =T b When the value is -1 (less than the second preset threshold), the exhaust temperature protection value T will be set. b Adjust to T b +10;

[0054] Step S6: Monitor the system current every minute and record it as I1, I2, I3...I n When I is detected n When I = 0.5 (greater than or equal to the second preset threshold and less than the third preset threshold), adjust the current monitoring to be performed every 5 seconds. If I is detected... n When I0 = 0.2 (less than the second preset threshold), the protection current value I0 is adjusted to I0 + 2.

[0055] Step S7: Monitor the system external pipe temperature every minute and record it as T. 管1 T 管2 T 管3 ...T 管n When T is detected 管n =T wg When the temperature reaches -3 (greater than or equal to the second preset threshold and less than the third preset threshold), adjust the external pipe temperature monitoring to be performed every 5 seconds. If T is detected... 管n =T wg When the temperature is -1 (less than the second preset threshold), the highest outer tube temperature value is adjusted to T. wg +10;

[0056] Step S8: When the outdoor photovoltaic output power is detected to be less than the first preset threshold, the power required by the air conditioning system will be supplied by the energy storage system or the mains power. Under this weather condition, if the electricity consumption period is during the period with the lowest electricity price, the mains power can be used first; under other conditions, the photovoltaic power supply will be used first. In rainy weather, since the humid weather has a significant impact on the reliable operation of the air conditioner, the above reliability parameters will remain unchanged.

[0057] This application also provides a control device for air conditioning parameters. It should be noted that the control device for air conditioning parameters in this application can be used to execute the control method for air conditioning parameters provided in this application. This device is used to implement the above embodiments and preferred embodiments; details already described will not be repeated. As used below, the term "module" can refer to a combination of software and / or hardware that implements a predetermined function. Although the device described in the following embodiments is preferably implemented in software, hardware implementation, or a combination of software and hardware, is also possible and contemplated.

[0058] The following describes the control device for air conditioning parameters provided in the embodiments of this application.

[0059] Figure 3 This is a schematic diagram of a control device for air conditioning parameters according to an embodiment of this application. Figure 3 As shown, the system includes:

[0060] The first acquisition unit 10 is used to acquire the output power of the photovoltaic panel and obtain the photovoltaic output power.

[0061] Specifically, the main components of the aforementioned photovoltaic air conditioning system are photovoltaic panels and air conditioners. The photovoltaic panels convert solar energy into electrical energy to power the air conditioner, reducing the consumption of renewable energy. The air conditioner is intelligently controlled based on the output power of the photovoltaic panels or the amount of electricity generated. This is achieved by first acquiring the power output of the photovoltaic panels, which can be detected by corresponding sensors. Assume the outdoor photovoltaic installation area is S, with units of square meters (m²). 2 The photovoltaic conversion efficiency is K, and the illuminance is Q, with units of watts per square meter (W / m²). 2 The output power of photovoltaic power generation can be calculated as: P = K * S * Q, where P is in W. The intensity of sunlight differs between sunny and cloudy / rainy days, resulting in different power outputs.

[0062] The second acquisition unit 20 is used to acquire an outdoor temperature value when the photovoltaic output power is greater than a first preset threshold, wherein the first preset threshold is the minimum power output value of the photovoltaic panel when the weather is sunny.

[0063] Specifically, the obtained photovoltaic output power is compared with a pre-set first preset threshold. If the photovoltaic output power is greater than the first preset threshold, it indicates that the output power of the photovoltaic panel is greater than the minimum output power under sunny weather conditions, thus confirming that the weather is sunny. The first preset threshold is determined by finding the maximum and minimum power output under sunny conditions through multiple different photovoltaic power values ​​obtained under sunny conditions. The minimum power value is used as the first preset threshold, and conditions greater than the first preset threshold are considered sunny weather. Under sunny conditions, the reliability parameters of the air conditioner need to be adjusted according to the specific outdoor temperature. Therefore, an outdoor temperature sensor is used to obtain the outdoor temperature value so that the air conditioner operates according to different reliability parameters under different temperature conditions, ensuring the cooling effect of the air conditioner while reducing energy consumption.

[0064] The adjustment unit 30 is used to increase the reliability parameters of the air conditioner when the air conditioner is in cooling mode and the outdoor temperature value is greater than the first preset temperature value. The reliability parameters are parameters that enable the air conditioner to operate safely and include at least an exhaust temperature protection value and a protection current value.

[0065] Specifically, when the user turns on the air conditioner and sets it to cooling mode, the outdoor temperature value has been obtained through the above steps. This outdoor temperature value is compared with a first preset threshold, which is a pre-set temperature indicating an extremely high outdoor temperature. In practical applications, this can be 36°C. If the outdoor temperature value is higher than the first preset threshold, it indicates that the outdoor weather is sunny and extremely hot. In this case, all operating parameters of the air conditioner need to operate at a high level to provide the user with a comfortable indoor environment. Therefore, the reliability parameters also need to be correspondingly improved. Reliability parameters represent the parameters that enable the air conditioner to operate safely during operation. These parameters include the exhaust temperature protection value, protection current value, and maximum external pipe temperature. Exhaust temperature protection is one type of compressor temperature protection in air conditioners. The exhaust temperature during compressor operation cannot be too high, otherwise it will cause increased compressor power consumption and deterioration in performance. Therefore, a certain exhaust temperature protection value needs to be set; that is, the exhaust temperature value of the air conditioner cannot exceed the exhaust temperature protection value. The protection current refers to the maximum operating current that the air conditioner compressor cannot exceed during operation, and the maximum external pipe temperature refers to the maximum temperature that the air conditioner condenser cannot exceed. In high-temperature conditions, increasing reliability parameters allows the air conditioner to operate at higher parameters, thus ensuring the comfort of the indoor environment. The aforementioned control device combines the daily electricity generated by the photovoltaic panel with the outdoor ambient temperature sensing module to determine the day's weather conditions and adjust the air conditioner's reliability parameters accordingly. In hot weather with high ambient temperatures, the air conditioning system experiences a relatively large cooling load. Adjusting the air conditioning system's reliability parameters based on outdoor sunlight intensity allows the system to operate normally at high frequency and high speed. If there is ample space at the outdoor unit's installation location, the photovoltaic panels can be installed at the outdoor unit's air inlet to create a lower ambient temperature relative to the outdoor environment, improving the air conditioner's cooling efficiency and achieving energy savings.

[0066] In this embodiment, firstly, the output power of the photovoltaic panel is obtained, and it is determined whether the photovoltaic output power is greater than a first preset threshold. If the photovoltaic output power is greater than the first preset threshold, the outdoor temperature value is obtained and determined whether the outdoor temperature value is greater than a first preset temperature value. If the outdoor temperature value is greater than the first preset temperature value in cooling mode, it indicates that the outdoor weather is sunny and the temperature is high. To ensure indoor temperature comfort, the air conditioner's operating parameters need to be at a higher level, correspondingly increasing the air conditioner's reliability parameters. This allows the air conditioner's reliability parameters to be adjusted according to weather conditions, maintaining reliable operation. Compared to existing devices where the air conditioner's reliability parameters cannot be adjusted according to weather conditions, this application can determine the current weather conditions based on the photovoltaic panel's output power and further adjust the air conditioner's reliability parameters based on the day's outdoor temperature value. This means it can flexibly adjust the reliability parameters according to weather conditions, improving the comfort of the air-conditioned environment while ensuring reliable air conditioner operation. Therefore, it solves the problem in existing technologies where the air conditioner's reliability parameters cannot change according to weather conditions, achieving the goal of improving the comfort of the air-conditioned environment.

[0067] In its specific implementation, the adjustment unit includes a first acquisition module, a second acquisition module, and a first adjustment module. The first acquisition module acquires the initial value of the reliability parameter, obtaining the initial reliability parameter value. The second acquisition module acquires the current value of the reliability parameter, obtaining the current reliability parameter value. The first adjustment module calculates the absolute value of the difference between the initial reliability parameter value and the current reliability parameter value. If the absolute value of the difference is less than a second preset threshold, the reliability parameter is increased. This device detects the current reliability parameter value and subtracts it from the initial reliability parameter value to obtain the absolute value of the difference. If the absolute value of the difference is less than the second preset threshold, the reliability parameter is increased. That is, when the current reliability parameter value is close to reaching a preset critical value (i.e., the initial reliability parameter value), the critical value of the reliability parameter is increased. The current reliability parameter value reflects the operating status of the air conditioner in real time. A larger current reliability parameter value indicates that the air conditioner needs to operate under high load to achieve a better cooling effect. This allows for real-time adjustment of the reliability parameter value, enabling the air conditioner to achieve a better cooling effect and improve comfort.

[0068] In some optional implementations, the first preset temperature is 36°C, the air conditioner is in cooling mode, and the outdoor temperature is greater than 36°C, indicating an ultra-high temperature outdoor environment. The initial reliability parameter value is the critical value that the air conditioner must meet during operation in the initial state; that is, the air conditioner cannot exceed the aforementioned initial reliability parameter value during operation to ensure safe operation. The initial reliability parameter value is T, where T is the exhaust temperature protection value.b The protection current value is I0, and the maximum external tube temperature is T. wg The current reliability parameter values ​​are the actual values ​​of the aforementioned reliability parameters during actual operation of the air conditioner. These values ​​can be obtained through measurement using the corresponding sensors, and are respectively the exhaust temperature protection value T. 排 The protection current value is I 保 The highest outer tube temperature is T 管 When T is satisfied b -T 排 If the value is less than 1, the exhaust temperature protection value T will be adjusted. b Adjust to T b +10, in I0-I 保 If the current is less than 0.2, adjust the protection current value I0 to I0+2, and then adjust the protection current value T. wg -T 管 If the temperature is less than 1, adjust the highest external pipe temperature to T. wg +10 means that if the absolute value of the difference is less than the second preset threshold, the reliability parameter value is increased, the critical value during the operation of the air conditioner is increased, and the air conditioner can operate under a higher load condition, such as a higher operating frequency, to meet the cooling needs.

[0069] To more flexibly adjust the air conditioner's reliability parameters, the second acquisition module includes a detection submodule for detecting the values ​​of the reliability parameters at preset time intervals to obtain the current reliability parameter value at the current moment. The first adjustment module includes a first adjustment submodule, a calculation submodule, and a second adjustment submodule. The first adjustment submodule reduces the preset time interval when the absolute value of the difference is greater than or equal to a second preset threshold and less than a third preset threshold, where the third preset threshold is greater than the second preset threshold. The calculation submodule detects the reliability parameter value at the reduced preset time interval to obtain an updated current reliability parameter value and calculates the absolute value of the difference between the initial reliability parameter value and the updated current reliability parameter value. The second adjustment module increases the reliability parameter when the absolute value of the difference is less than the second preset threshold. This device detects the reliability parameter value at preset time intervals and reduces the preset time interval when the absolute value of the difference meets the above conditions. This increases the detection frequency of the reliability parameter when the absolute value of the difference is small, allowing for timely adjustment of the reliability parameter.

[0070] Specifically, the preset time interval can be one minute, meaning that every minute the exhaust temperature value corresponding to the exhaust temperature protection value, the current value corresponding to the protection current value, and the outer pipe temperature corresponding to the highest outer pipe temperature value are detected to obtain the current reliability parameter value at the current moment. Assuming the second preset thresholds are 1, 0.2, and 1 respectively, that is, when T is satisfied...b -T 排 <1, I0-I 保 <0.2, T wg -T 管 <1, the third preset thresholds are 4, 0.5, and 3 respectively, that is, when T is satisfied b -T 排 <4,I0-I 保 <0.5, T wg -T 管 <3. Reduce the preset time interval from one minute to five seconds, which increases the detection frequency of the reliability parameters. This is because the current reliability parameter value is approaching a critical value, requiring increased monitoring to adjust the critical value promptly if it exceeds it. After increasing the detection frequency, obtain the updated current reliability parameters and continue calculating the difference between the current and initial reliability parameters. If the absolute value of this difference is less than a second preset threshold, increase the reliability parameter.

[0071] The second adjustment submodule includes a repetition submodule and a third adjustment submodule. The repetition submodule is used to repeat the reduction step and the calculation step at least once, when the absolute value of the difference between the initial reliability parameter value and the updated current reliability parameter value is greater than or equal to the second preset threshold and less than the third preset threshold, until the absolute value of the difference is less than the second preset threshold. The third adjustment submodule is used to increase the reliability parameter. After increasing the detection frequency of the reliability parameter, i.e., when the absolute value of the updated difference is greater than or equal to the second preset threshold and less than the third preset threshold, the device repeats the reduction step and the calculation step until the absolute value of the difference is less than the second preset threshold. This allows for more accurate adjustment of the reliability parameter by determining whether it needs to be increased based on changes in the actual reliability parameter value.

[0072] In the specific implementation process, after reducing the preset time interval as mentioned above, which increases the detection frequency of the reliability parameter, the difference between the updated current reliability parameter and the initial reliability parameter is calculated. If the absolute value of the difference is still greater than or equal to the second preset threshold and less than the third preset threshold, that is, if the condition for increasing the reliability parameter is not met, the preset time interval is reduced until the absolute value of the difference is less than the second preset threshold, and then the reliability parameter is increased.

[0073] To improve user comfort, in some embodiments, the adjustment unit further includes a second adjustment module for increasing the operating parameters of the air conditioner, wherein the operating parameters include at least the operating frequency and fan speed. When the outdoor temperature is high, the device automatically adjusts the values ​​of the operating parameters, resulting in better cooling performance and improved user comfort.

[0074] Specifically, as mentioned above, when the first preset temperature value is 36℃, an outdoor temperature value greater than the first preset temperature value indicates that the outdoor ambient temperature is in an ultra-high temperature state. If the original state is maintained, it is not enough to keep the indoor ambient temperature within the comfortable temperature range. At this time, the operating parameters are adjusted, and the air conditioner's operating frequency is increased to Z0+8 and the fan speed is increased to R0+80. Z0 represents the air conditioner's operating frequency before adjustment, and R0 represents the air conditioner's fan speed before adjustment.

[0075] In some embodiments, a first control unit is also included, used to maintain the reliability parameters and operating parameters unchanged when the air conditioner is in cooling mode and the outdoor temperature is greater than a second preset temperature value but less than or equal to the first preset temperature value. The operating parameters include at least the operating frequency and fan speed. When the outdoor temperature is greater than the second preset temperature but less than or equal to the first preset temperature, this device indicates that the outdoor temperature is in a generally high-temperature state. In this case, no adjustment to the air conditioner is needed. Thus, the air conditioner can maintain good comfort during normal operation without requiring additional adjustments, avoiding waste of electrical energy.

[0076] In the specific implementation process, assuming the first preset temperature value is 36℃ and the second preset temperature value is 32℃, when 32℃ < outdoor temperature value ≤ 36℃, the ambient temperature is a relatively common temperature. At this time, the air conditioning system can maintain normal operation and can also monitor the indoor ambient temperature in real time.

[0077] To save energy while maintaining comfort when outdoor temperatures are low, the device also includes a second control unit, a third acquisition unit, and a calculation unit. The second control unit maintains the reliability parameters unchanged when the air conditioner is in cooling mode and the outdoor temperature is less than or equal to a second preset temperature value. The third acquisition unit acquires the optimal indoor temperature and the detected indoor temperature, where the optimal indoor temperature is a preset value and the detected indoor temperature is the actual indoor temperature measured in real time. The calculation unit calculates the absolute value of the difference between the detected indoor temperature and the optimal indoor temperature. If the absolute value of this difference is greater than a preset temperature difference, the operating parameters are reduced so that the absolute value of the difference between the detected indoor temperature and the optimal indoor temperature is less than the preset temperature difference. The operating parameters include at least the operating frequency and the fan speed. This device maintains the reliability parameters unchanged and only reduces the operating parameters when outdoor temperatures are low. Since the air conditioner does not need to significantly lower the temperature in such weather conditions, reducing the operating parameters ensures both indoor comfort and energy savings.

[0078] Specifically, assuming the second preset temperature is 32℃, and the outdoor temperature is less than 32℃, the outdoor ambient temperature is relatively lower. In this case, the air conditioner's operating frequency can be reduced to Z0-4, the fan speed to R0-50, and the reliable operation exhaust protection value is T. b The protection current is I0, and the maximum external tube temperature is T. wg Simply maintain the initial value. In this case, a low-frequency, low-speed operating mode is maintained, which saves power. Then, the indoor ambient temperature is monitored in real time, measured every minute, and the indoor temperature value is recorded as T. in1 T in2 T in3 ...T inN It calculates the absolute value of the difference between the measured indoor temperature and the optimal indoor temperature. If the absolute value is greater than the preset temperature difference, such as 1.5℃, it continues to reduce the operating frequency and fan speed to control the indoor environment, i.e., the measured indoor temperature, to always be within T. in =T0±1.5℃ state.

[0079] In some optional embodiments, a third control unit is also included, used to keep the reliability parameters unchanged when the photovoltaic output power is less than or equal to the first preset threshold. When the photovoltaic output power is less than the first preset threshold, it indicates that the photovoltaic output power is low and the weather conditions may be cloudy or rainy. Therefore, the device does not adjust the air conditioner's reliability parameters, thus ensuring the safe operation of the air conditioner in cloudy or rainy weather.

[0080] In its implementation, the aforementioned photovoltaic air conditioning system also includes an energy storage system and a mains power system. The energy storage system stores the electrical energy generated by the photovoltaic panels for powering the air conditioner, while the mains power is supplied to the air conditioner through the city's power grid. When the outdoor photovoltaic output power is detected to be less than a first preset threshold, i.e., during cloudy or rainy weather, the sunlight intensity is poor, and the photovoltaic panels generate electricity slowly or not at all. In this case, the power required by the air conditioning system will be supplied by the energy storage system or the mains power. Under these weather conditions, if the electricity consumption period coincides with the lowest electricity price, the mains power can be used preferentially. Under other conditions, the photovoltaic power source's energy storage system will be used preferentially. During cloudy or rainy weather, since the dampness has a significant impact on the reliable operation of the air conditioner, the system should be operated at its initial reliability parameters. Throughout the entire process of the aforementioned control device, photovoltaic energy is used preferentially, and the use of mains power is minimized. This not only significantly reduces the system's operating costs but also generates some profit by selling excess electricity.

[0081] The aforementioned photovoltaic air conditioning system includes a processor and a memory. The first acquisition unit, the second acquisition unit, and the adjustment unit are all stored as program units in the memory, and the processor executes these program units to achieve their respective functions. All of the above modules reside in the same processor; alternatively, the modules may be located in different processors in any combination.

[0082] The processor contains a kernel, which retrieves the corresponding program unit from memory. One or more kernels can be configured, and adjusting kernel parameters can regulate the air conditioner's reliability parameters according to changes in weather conditions.

[0083] The memory may include non-permanent memory in computer-readable media, such as random access memory (RAM) and / or non-volatile memory, such as read-only memory (ROM) or flash RAM, and the memory includes at least one memory chip.

[0084] This invention provides a photovoltaic air conditioning system, including a photovoltaic panel and an air conditioner. The air conditioner includes one or more processors, a memory, and one or more programs, wherein the one or more programs are stored in the memory and configured to be executed by the one or more processors, and the one or more programs include a control method for executing air conditioning parameters.

[0085] Specifically, the methods for controlling air conditioning parameters include:

[0086] Step S101: Obtain the output power of the photovoltaic panel to obtain the photovoltaic output power;

[0087] Specifically, the main components of the aforementioned photovoltaic air conditioning system are photovoltaic panels and air conditioners. The photovoltaic panels convert solar energy into electrical energy to power the air conditioner, reducing the consumption of renewable energy. The air conditioner is intelligently controlled based on the output power of the photovoltaic panels or the amount of electricity generated. This is achieved by first acquiring the power output of the photovoltaic panels, which can be detected by corresponding sensors. Assume the outdoor photovoltaic installation area is S, with units of square meters (m²). 2 The photovoltaic conversion efficiency is K, and the illuminance is Q, with units of watts per square meter (W / m²). 2 The output power of photovoltaic power generation can be calculated as: P = K * S * Q, where P is in W. The intensity of sunlight differs between sunny and cloudy / rainy days, resulting in different power outputs.

[0088] Step S102: When the photovoltaic output power is greater than the first preset threshold, obtain the outdoor temperature value, wherein the first preset threshold is the minimum power output value of the photovoltaic panel when the weather is sunny.

[0089] Specifically, the obtained photovoltaic output power is compared with a pre-set first preset threshold. If the photovoltaic output power is greater than the first preset threshold, it indicates that the output power of the photovoltaic panel is greater than the minimum output power under sunny weather conditions, thus confirming that the weather is sunny. The first preset threshold is determined by finding the maximum and minimum power output under sunny conditions through multiple different photovoltaic power values ​​obtained under sunny conditions. The minimum power value is used as the first preset threshold, and conditions greater than the first preset threshold are considered sunny weather. Under sunny conditions, the reliability parameters of the air conditioner need to be adjusted according to the specific outdoor temperature. Therefore, an outdoor temperature sensor is used to obtain the outdoor temperature value so that the air conditioner operates according to different reliability parameters under different temperature conditions, ensuring the cooling effect of the air conditioner while reducing energy consumption.

[0090] Step S103: When the air conditioner is in cooling mode and the outdoor temperature is greater than the first preset temperature value, increase the reliability parameters of the air conditioner. The reliability parameters are parameters that enable the air conditioner to operate safely and include at least the exhaust temperature protection value and the protection current value.

[0091] Specifically, when the user turns on the air conditioner and sets it to cooling mode, the outdoor temperature value has been obtained through the above steps. This outdoor temperature value is compared with a first preset threshold, which is a pre-set temperature indicating an extremely high outdoor temperature. In practical applications, this can be 36°C. If the outdoor temperature value is higher than the first preset threshold, it indicates that the outdoor weather is sunny and extremely hot. In this case, all operating parameters of the air conditioner need to operate at a high level to provide the user with a comfortable indoor environment. Therefore, the reliability parameters also need to be correspondingly improved. Reliability parameters represent the parameters that enable the air conditioner to operate safely during operation. These parameters include the exhaust temperature protection value, protection current value, and maximum external pipe temperature. Exhaust temperature protection is one type of compressor temperature protection in air conditioners. The exhaust temperature during compressor operation cannot be too high, otherwise it will cause increased compressor power consumption and deterioration in performance. Therefore, a certain exhaust temperature protection value needs to be set; that is, the exhaust temperature value of the air conditioner cannot exceed the exhaust temperature protection value. The protection current refers to the maximum operating current that the air conditioner compressor cannot exceed during operation, and the maximum external pipe temperature refers to the maximum temperature that the air conditioner condenser cannot exceed. In high-temperature conditions, increasing reliability parameters allows the air conditioner to operate at higher parameters, thus ensuring the comfort of the indoor environment. This control method combines the daily electricity generated by the photovoltaic panel with the outdoor ambient temperature sensing module to determine the day's weather conditions and adjust the air conditioner's reliability parameters accordingly. In hot weather with high ambient temperatures, the air conditioning system experiences a relatively large cooling load. Adjusting the air conditioning system's reliability parameters based on outdoor sunlight intensity allows the system to operate normally at high frequency and high speed. If there is ample space at the outdoor unit's installation location, the photovoltaic panels can be installed at the outdoor unit's air inlet to create a lower ambient temperature relative to the outdoor environment, improving the air conditioner's cooling efficiency and achieving energy savings.

[0092] It is obvious to those skilled in the art that the modules or steps of the present invention described above can be implemented using general-purpose computing devices. They can be centralized on a single computing device or distributed across a network of multiple computing devices. They can be implemented using computer-executable program code, and thus can be stored in a storage device for execution by a computing device. In some cases, the steps shown or described can be performed in a different order than those described herein, or they can be fabricated as separate integrated circuit modules, or multiple modules or steps can be fabricated as a single integrated circuit module. Thus, the present invention is not limited to any particular combination of hardware and software.

[0093] Those skilled in the art will understand that embodiments of this application can be provided as methods, systems, or computer program products. Therefore, this application can take the form of a completely hardware embodiment, a completely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, this application can take the form of a computer program product embodied on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0094] This application is described with reference to flowchart illustrations and / or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of this application. It will be understood that each block of the flowchart illustrations and / or block diagrams, and combinations of blocks in the flowchart illustrations and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, special-purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, generate instructions for implementing the flowchart... Figure 1 One or more processes and / or boxes Figure 1 A device that provides the functions specified in one or more boxes.

[0095] These computer program instructions may also be stored in a computer-readable storage medium that can direct a computer or other programmable data processing device to function in a particular manner, such that the instructions stored in the computer-readable storage medium produce an article of manufacture including instruction means, which are implemented in a process Figure 1 One or more processes and / or boxes Figure 1 The function specified in one or more boxes.

[0096] These computer program instructions may also be loaded onto a computer or other programmable data processing equipment to cause a series of operational steps to be performed on the computer or other programmable equipment to produce a computer-implemented process, thereby providing instructions that execute on the computer or other programmable equipment for implementing the process. Figure 1 One or more processes and / or boxes Figure 1 The steps of the function specified in one or more boxes.

[0097] In a typical configuration, a computing device includes one or more processors (CPU), input / output interfaces, network interfaces, and memory.

[0098] Memory may include non-persistent memory in computer-readable media, such as random access memory (RAM) and / or non-volatile memory, like read-only memory (ROM) or flash RAM. Memory is an example of computer-readable media.

[0099] Computer-readable media includes both permanent and non-permanent, removable and non-removable media that can store information using any method or technology. Information can be computer-readable instructions, data structures, modules of programs, or other data. Examples of computer storage media include, but are not limited to, phase-change memory (PRAM), static random access memory (SRAM), dynamic random access memory (DRAM), other types of random access memory (RAM), read-only memory (ROM), electrically erasable programmable read-only memory (EEPROM), flash memory or other memory technologies, CD-ROM, digital versatile optical disc (DVD) or other optical storage, magnetic tape, magnetic magnetic disk storage or other magnetic storage devices, or any other non-transferable medium that can be used to store information accessible by a computing device. As defined herein, computer-readable media does not include transient computer-readable media, such as modulated data signals and carrier waves.

[0100] It should also be noted that the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus. Unless otherwise specified, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element.

[0101] As can be seen from the above description, the embodiments of this application achieve the following technical effects:

[0102] 1) In the air conditioning parameter control method of this application, the output power of the photovoltaic panel is obtained, and it is determined whether the photovoltaic output power is greater than a first preset threshold. If the photovoltaic output power is greater than the first preset threshold, the outdoor temperature value is obtained and it is determined whether the outdoor temperature value is greater than a first preset temperature value. In cooling mode and when the outdoor temperature value is greater than the first preset temperature value, it indicates that the outdoor weather is sunny and the temperature is high. In order to ensure the comfort of the indoor temperature, the operating parameters of the air conditioner need to be operated at a higher level, and the reliability parameters of the air conditioner are correspondingly increased. This allows the reliability parameters of the air conditioner to be adjusted according to the weather conditions, maintaining the reliable operation of the air conditioner. Compared with the prior art, where the reliability parameters of the air conditioner cannot be adjusted according to the weather conditions, this application can determine the current weather conditions based on the output power of the photovoltaic panel and further adjust the reliability parameters of the air conditioner according to the outdoor temperature value of the day. That is, it can flexibly adjust the reliability parameters according to the weather conditions, improving the comfort of the air-conditioned environment while ensuring the reliable operation of the air conditioner. Therefore, it can solve the problem that the reliability parameters of the air conditioner in the prior art cannot be changed according to the changes in weather conditions, achieving the goal of improving the comfort of the air-conditioned environment.

[0103] 2) The photovoltaic air conditioning system of this application acquires the output power of the photovoltaic panel, determines whether the photovoltaic output power is greater than a first preset threshold, and if the photovoltaic output power is greater than the first preset threshold, continues to acquire the outdoor temperature value and determines whether the outdoor temperature value is greater than a first preset temperature value. In cooling mode, if the outdoor temperature value is greater than the first preset temperature value, it indicates that the outdoor weather is sunny and the temperature is high. To ensure indoor temperature comfort, the air conditioning operating parameters need to operate at a higher level, correspondingly increasing the air conditioning reliability parameters. This allows the air conditioning reliability parameters to be adjusted according to weather conditions, maintaining reliable operation of the air conditioning. Compared with existing devices where the air conditioning reliability parameters cannot be adjusted according to weather conditions, this application can determine the current weather conditions based on the output power of the photovoltaic panel and further adjust the air conditioning reliability parameters according to the outdoor temperature value of the day. That is, it can flexibly adjust the reliability parameters according to weather conditions, improving the comfort of the air-conditioned environment while ensuring reliable air conditioning operation. Therefore, it can solve the problem in existing technologies where the air conditioning reliability parameters cannot change according to weather conditions, achieving the goal of improving the comfort of the air-conditioned environment.

[0104] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A method for controlling air conditioning parameters, characterized in that, The control method is applied to a photovoltaic air conditioning system, which includes at least photovoltaic panels and an air conditioner, wherein the air conditioner is powered at least by the photovoltaic panels, including: The output power of the photovoltaic panel is obtained to obtain the photovoltaic output power; When the photovoltaic output power is greater than a first preset threshold, the outdoor temperature value is obtained, wherein the first preset threshold is the minimum power output value of the photovoltaic panel when the weather is sunny. When the air conditioner is in cooling mode and the outdoor temperature is greater than a first preset temperature value, the reliability parameters of the air conditioner are increased. The reliability parameters are parameters that enable the air conditioner to operate safely and include at least an exhaust temperature protection value and a protection current value. When the air conditioner is in cooling mode and the outdoor temperature is greater than a first preset temperature value, the reliability parameter of the air conditioner is increased, including: obtaining an initial value of the reliability parameter to obtain an initial reliability parameter value; obtaining the value of the reliability parameter at the current moment to obtain a current reliability parameter value; calculating the absolute value of the difference between the initial reliability parameter value and the current reliability parameter value, and increasing the reliability parameter when the absolute value of the difference is less than a second preset threshold.

2. The control method according to claim 1, characterized in that, Obtain the value of the reliability parameter at the current moment, and obtain the current reliability parameter value, including: The reliability parameter value is detected at a preset time interval to obtain the current reliability parameter value corresponding to the current moment. Increasing the reliability parameter when the absolute value of the difference is less than a second preset threshold further includes: The reduction step involves reducing the preset time interval when the absolute value of the difference is greater than or equal to the second preset threshold and less than the third preset threshold, wherein the third preset threshold is greater than the second preset threshold. The calculation steps are as follows: the value of the reliability parameter is detected according to the reduced preset time interval to obtain the updated current reliability parameter value, and the absolute value of the difference between the initial reliability parameter value and the updated current reliability parameter value is calculated. The adjustment step involves increasing the reliability parameter if the absolute value of the difference is less than a second preset threshold.

3. The control method according to claim 2, characterized in that, Increasing the reliability parameter when the absolute value of the difference is less than a second preset threshold further includes: If the absolute value of the difference between the initial reliability parameter value and the updated current reliability parameter value is greater than or equal to the second preset threshold and less than the third preset threshold, the reduction step and the calculation step are repeated at least once until the absolute value of the difference is less than the second preset threshold. Increase the aforementioned reliability parameters.

4. The control method according to claim 1, characterized in that, When the air conditioner is in cooling mode and the outdoor temperature is greater than a first preset temperature value, the control method further includes: Increase the operating parameters of the air conditioner, wherein the operating parameters include at least the operating frequency and the fan speed.

5. The control method according to claim 1, characterized in that, The control method further includes: When the air conditioner is in cooling mode and the outdoor temperature is greater than the second preset temperature value and less than or equal to the first preset temperature value, the reliability parameter and operating parameter are kept unchanged, wherein the operating parameter includes at least the operating frequency and the fan speed.

6. The control method according to claim 1, characterized in that, The control method further includes: When the air conditioner is in cooling mode and the outdoor temperature is less than or equal to the second preset temperature, the reliability parameter is kept unchanged. The optimal indoor temperature value and the indoor temperature detection value are obtained, wherein the optimal indoor temperature value is a preset optimal indoor temperature value, and the indoor temperature detection value is the actual indoor temperature value obtained by real-time measurement. Calculate the absolute value of the difference between the indoor temperature detection value and the indoor optimal temperature value. If the absolute value of the difference is greater than the preset temperature difference, reduce the operating parameters so that the absolute value of the difference between the indoor temperature detection value and the indoor optimal temperature value is less than the preset temperature difference. The operating parameters include at least the operating frequency and the fan speed.

7. The control method according to claim 1, characterized in that, The control method further includes: When the photovoltaic output power is less than or equal to the first preset threshold, the reliability parameter is kept unchanged.

8. A control device for air conditioning parameters, characterized in that, The control device is applied to a photovoltaic air conditioning system, which includes at least photovoltaic panels and an air conditioner, wherein the air conditioner is powered by at least the photovoltaic panels, and the control device includes: The first acquisition unit is used to acquire the output power of the photovoltaic panel and obtain the photovoltaic output power. The second acquisition unit is used to acquire an outdoor temperature value when the photovoltaic output power is greater than a first preset threshold, wherein the first preset threshold is the minimum power output value of the photovoltaic panel when the weather is sunny. An adjustment unit is configured to increase the reliability parameters of the air conditioner when the air conditioner is in cooling mode and the outdoor temperature value is greater than a first preset temperature value. The reliability parameters are parameters that ensure the safe operation of the air conditioner and include at least an exhaust temperature protection value and a protection current value. The adjustment unit includes a first acquisition module, a second acquisition module, and a first adjustment module. The first acquisition module is used to acquire the initial value of the reliability parameter to obtain an initial reliability parameter value. The second acquisition module is used to acquire the value of the reliability parameter at the current moment to obtain a current reliability parameter value. The first adjustment module is used to calculate the absolute value of the difference between the initial reliability parameter value and the current reliability parameter value, and if the absolute value of the difference is less than a second preset threshold, the reliability parameter is increased.

9. A photovoltaic air conditioning system, characterized in that, The device includes a photovoltaic panel and an air conditioner, the air conditioner comprising: one or more processors, a memory, and one or more programs, wherein the one or more programs are stored in the memory and configured to be executed by the one or more processors, the one or more programs including a control method for performing any one of claims 1 to 7.

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