Air conditioning system and control method thereof

Abstract

The embodiment of the application discloses an air conditioning system and a control method thereof, relates to the technical field of air conditioning systems, and is used for improving the stability of power supply of an air conditioner by a photovoltaic power generation device. The air conditioning system comprises the air conditioner, the photovoltaic power generation device, an illumination prediction device configured to predict the illumination intensity at a future time, an illumination detection device configured to detect the actual illumination intensity, and a controller configured to: acquire the predicted illumination intensity obtained by the illumination prediction device in predicting the illumination intensity at a second time at a first time; determine the target energy storage mode of the air conditioning system according to the predicted illumination intensity and the input power of the air conditioner in a stable operation state; control the air conditioning system to store electricity based on the target energy storage mode; acquire the actual illumination intensity detected by the illumination detection device at the second time; determine the target power supply mode of the air conditioner according to the predicted illumination intensity and the actual illumination intensity; and control the air conditioning system to supply power to the air conditioner based on the target power supply mode.

Description

Technical Field

[0001] This application relates to the field of air conditioning system technology, and in particular to an air conditioning system and its control method. Background Technology

[0002] Currently, with the development of photovoltaic power generation technology, air conditioners powered by photovoltaic power generation devices are becoming increasingly widely applicable, realizing low-energy regeneration of power resources.

[0003] The power output of a photovoltaic power generation device is directly proportional to the intensity of sunlight it receives. The stronger the sunlight, the greater the power output of the photovoltaic power generation system. However, different regions, times, and weather conditions all determine the intensity of sunlight. In particular, the constant changes in weather factors such as cloudy skies, rain, and sandstorms cause fluctuations in sunlight intensity.

[0004] Therefore, how to ensure that photovoltaic power generation devices can stably supply power to air conditioners has become an urgent problem to be solved. Summary of the Invention

[0005] This application provides an air conditioning system and its control method for improving the stability of power supply to the air conditioner via a photovoltaic power generation device.

[0006] To achieve the above objectives, this application adopts the following technical solution.

[0007] In a first aspect, embodiments of this application provide an air conditioning system, including: an air conditioner; a photovoltaic power generation device for generating electricity through sunlight and supplying power to the air conditioner; a sunlight prediction device for predicting the sunlight intensity at future times; a sunlight detection device for detecting the actual sunlight intensity; and a controller configured to: acquire a predicted sunlight intensity obtained by the sunlight prediction device predicting the sunlight intensity at a second time from a first time; determine a target energy storage method for the air conditioning system based on the predicted sunlight intensity and the input power of the air conditioner under stable operating conditions; control the air conditioning system to store electricity based on the target energy storage method; acquire the actual sunlight intensity detected by the sunlight detection device at the second time; determine a target power supply method for the air conditioner based on the predicted sunlight intensity and the actual sunlight intensity; and control the air conditioning system to supply power to the air conditioner based on the target power supply method.

[0008] The technical solution provided in this application provides at least the following beneficial effects: This technical solution obtains the predicted light intensity at the second moment from the first moment, makes a preliminary prediction of the weather conditions and light intensity at the second moment, and determines whether the electricity generated by the predicted light intensity can meet the stable operation of the air conditioner based on the predicted light intensity and the input power of the air conditioner under stable operation. This allows for the selection of the target energy storage method for the air conditioning system, avoiding the waste of power resources. In addition, the actual light intensity is obtained at the second moment, and the target power supply method for the air conditioner is determined based on the predicted light intensity and the actual light intensity, so as to avoid the initial power supply method being insufficient to support the stable operation of the air conditioner. Thus, an air conditioning system with stable energy storage, reasonable power supply, and independent operation is formed.

[0009] In some embodiments, the controller is configured to determine the target energy storage method of the air conditioning system based on the predicted light intensity and the input power of the air conditioner under stable operating conditions. Specifically, the controller is configured to: acquire the output power of the photovoltaic power generation device that converts the predicted light intensity into electrical energy; and determine the target energy storage method of the air conditioning system based on the output power and the input power.

[0010] In some embodiments, the air conditioning system further includes: an energy storage device for storing electrical energy and supplying power to the air conditioner; and a controller configured to determine a target energy storage method for the air conditioning system based on the output power and the input power, specifically configured to: determine the target energy storage method of the air conditioning system as purchasing electricity from the power system and storing it in the energy storage device when the output power is less than or equal to the product of the input power and the power correction coefficient; and determine the target energy storage method of the air conditioning system as no energy storage when the output power is greater than the product of the input power and the power correction coefficient.

[0011] In some embodiments, the controller is configured to determine the target power supply mode of the air conditioner based on the predicted light intensity and the actual light intensity. Specifically, it is configured to: determine that the target power supply mode of the air conditioner is powered by an energy storage device when the actual light intensity is less than or equal to the product of the predicted light intensity and the light correction coefficient; and determine that the target power supply mode of the air conditioner is powered by a photovoltaic power generation device when the actual light intensity is greater than the product of the predicted light intensity and the light correction coefficient.

[0012] In some embodiments, the air conditioning system further includes: a dispatching device for controlling the current switch between the power system and the energy storage device and controlling the current switch between the energy storage device and the air conditioner; the controller is further configured to: control the dispatching device to open the current switch between the power system and the energy storage device when the target power supply mode of the air conditioner is power supply through the energy storage device; and control the dispatching device to close the current switch between the energy storage device and the air conditioner and open the current switch between the photovoltaic power generation device and the air conditioner when the target power supply mode of the air conditioner is power supply through the photovoltaic power generation device.

[0013] Secondly, embodiments of this application provide a control method for an air conditioning system, comprising: acquiring a predicted light intensity obtained by a light prediction device predicting the light intensity at a second time from a first time; determining a target energy storage mode for the air conditioning system based on the predicted light intensity and the input power of the air conditioner under stable operating conditions; controlling the air conditioning system to store electricity based on the target energy storage mode; acquiring the actual light intensity obtained by a light detection device at a second time; determining a target power supply mode for the air conditioner based on the predicted light intensity and the actual light intensity; and controlling the air conditioning system to supply power to the air conditioner based on the target power supply mode.

[0014] Thirdly, embodiments of this application provide a controller, including: one or more processors; one or more memories; wherein the one or more memories are used to store computer program code, the computer program code including computer instructions, and when the one or more processors execute the computer instructions, the controller executes any of the air conditioning system control methods provided in the second aspect.

[0015] Fourthly, embodiments of this application provide a computer-readable storage medium including computer instructions that, when executed on a computer, cause the computer to perform the methods provided in the second aspect and possible implementations.

[0016] Fifthly, embodiments of the present invention provide a computer program product that can be directly loaded into a memory and contains software code. After being loaded and executed by a computer, the computer program product can implement the methods provided in the second aspect and possible implementations.

[0017] It should be noted that the aforementioned computer instructions may be stored, in whole or in part, on a computer-readable storage medium. This computer-readable storage medium may be packaged together with the controller's processor, or it may be packaged separately from the controller's processor; this application does not impose any limitations on this.

[0018] The beneficial effects described in aspects two through five of this application can be referred to the analysis of the beneficial effects of aspect one, and will not be repeated here. Attached Figure Description

[0019] The accompanying drawings are provided to further understand the technical solutions of the present invention and constitute a part of the specification. They are used together with the embodiments of this application to explain the technical solutions of the present invention and do not constitute a limitation on the technical solutions of the present invention.

[0020] Figure 1 This is a hardware structure block diagram of an air conditioning system provided in an embodiment of this application; Figure 2 A hardware structure block diagram of another air conditioning system provided in this application embodiment; Figure 3 A hardware configuration block diagram of an air conditioning system provided in an embodiment of this application; Figure 4 An internal interaction diagram of an air conditioning system provided in an embodiment of this application; Figure 5 A flowchart illustrating a control method for an air conditioning system provided in an embodiment of this application; Figure 6 A flowchart illustrating another control method for an air conditioning system provided in an embodiment of this application; Figure 7 A flowchart illustrating another control method for an air conditioning system provided in an embodiment of this application; Figure 8 A flowchart illustrating another control method for an air conditioning system provided in an embodiment of this application; Figure 9 A flowchart illustrating another control method for an air conditioning system provided in an embodiment of this application; Figure 10 A flowchart illustrating another control method for an air conditioning system provided in an embodiment of this application; Figure 11 A flowchart illustrating another control method for an air conditioning system provided in an embodiment of this application; Figure 12 This is a schematic diagram of the structure of a control device for an air conditioning system provided in an embodiment of this application; Figure 13 This is a schematic diagram of the structure of a control device for another air conditioning system provided in an embodiment of this application. Detailed Implementation

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

[0022] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indication will also change accordingly.

[0023] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, unless otherwise stated, "a plurality of" means two or more.

[0024] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "connected" and "linked" should be interpreted broadly, for example, as a fixed connection, a detachable connection, or an integral connection. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances. Furthermore, when describing pipelines, the terms "connected" and "linked" as used in this application have the meaning of establishing electrical connection. The specific meaning needs to be understood in conjunction with the context.

[0025] In the embodiments of this application, the terms "exemplary" or "for example" are used to indicate that something is an example, illustration, or description. Any embodiment or design that is described as "exemplary" or "for example" in the embodiments of this application should not be construed as being more preferred or advantageous than other embodiments or designs. Specifically, the use of the terms "exemplary" or "for example" is intended to present the relevant concepts in a specific manner.

[0026] To facilitate understanding, we will first provide a brief introduction and explanation of some terms or basic concepts of technology involved in the embodiments of the present invention.

[0027] The photovoltaic power generation device outputs direct current, which needs to be converted into alternating current synchronized with the power grid by an inverter and connected to the building's internal power grid. The photovoltaic power generation device needs to be equipped with a battery, which directly stores and releases direct current, and the inverter also needs to convert between alternating current and direct current during the storage and release process.

[0028] Currently, for various electrical equipment in buildings, lighting fixtures use LED light sources, which require DC drive and rectifiers to convert AC to DC. IT equipment such as computers and monitors are also DC driven internally and require AC-to-DC voltage conversion and rectification. White goods such as air conditioners and refrigerators are currently being developed with inverters driving synchronous motors to achieve efficient and precise control of motor speed. This also requires DC drive internally and AC / DC rectification. High-power devices in buildings such as elevators, fans, and water pumps are also currently being developed with DC-driven inverter control for high efficiency and energy saving.

[0029] Thus, the development and technological progress of various building electrical devices are shifting from AC drive to DC drive. Photovoltaics and batteries also require DC access. However, building electrical systems constantly switch between AC and DC. Multiple conversions require repeated connection to conversion devices, which not only increases equipment investment and the number of failure points, but also causes conversion losses of nearly 10%. Traditional air conditioning systems powered by photovoltaic power generation devices are energy-intensive and unstable.

[0030] Based on this, embodiments of this application provide an air conditioning system, including: an air conditioner; a photovoltaic power generation device for generating electricity through sunlight and supplying power to the air conditioner; a sunlight prediction device for predicting the sunlight intensity at future times; a sunlight detection device for detecting the actual sunlight intensity; and a controller configured to: acquire the predicted sunlight intensity obtained by the sunlight prediction device at a first time for a second time; determine a target energy storage method for the air conditioning system based on the predicted sunlight intensity and the input power of the air conditioner under stable operating conditions; control the air conditioning system to store electricity based on the target energy storage method; acquire the actual sunlight intensity detected by the sunlight detection device at the second time; determine a target power supply method for the air conditioner based on the predicted sunlight intensity and the actual sunlight intensity; and control the air conditioning system to supply power to the air conditioner based on the target power supply method.

[0031] This improves the stability of power supply to air conditioners via photovoltaic power generation devices and reduces the energy consumption of the air conditioning system.

[0032] Based on this, embodiments of this application provide a hardware structure block diagram of an air conditioning system, such as... Figure 1 As shown, the air conditioning system 1 may include a processor 2 and a memory 3.

[0033] In some embodiments, the processor 2 and the memory 3 are electrically connected directly or indirectly to enable data transmission or interaction. For example, these components can be electrically connected to each other through one or more communication buses or signal lines.

[0034] In some embodiments, the air conditioning system 1 includes at least one software module that can be stored in the memory 3 in the form of software or firmware or embedded in the operating system (OS) of the cooking device 1.

[0035] In some embodiments, the processor 2 is used to execute executable modules stored in the memory 3, such as software function modules and computer programs included in the air conditioning system 1, to implement the control method of the air conditioning system.

[0036] In some embodiments, the processor 2 can execute a computer program after receiving an execution instruction. The processor 2 can be an integrated circuit chip with signal processing capabilities.

[0037] In some embodiments, processor 2 may also be a general-purpose processor, such as a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a discrete gate or transistor logic device, or a discrete hardware component, which can implement or execute the methods, steps, and logic block diagrams disclosed in the embodiments of this application. In addition, the general-purpose processor may be a microprocessor or any conventional processor, etc.

[0038] In some embodiments, memory 3 may be, but is not limited to, random access memory (RAM), read-only memory (ROM), or programmable read-only memory (ROM). Erasable programmable read-only memory (PROM) Electrically erasable programmable read-only memory (EPROM) and electrically erasable programmable read-only memory (EPROM). EEPROM (only memory).

[0039] In some embodiments, the memory 3 is used to store a program, which the processor 2 executes upon receiving an execution instruction.

[0040] In some embodiments, the memory 3 can be used to store software programs and data. The controller 1000 executes various functions of the air conditioning system and data processing by running the software programs or data stored in the memory 3. The memory 3 may include high-speed random access memory, and may also include non-volatile memory, such as at least one disk storage device, flash memory device, or other volatile solid-state storage device. The memory 3 stores the operating system that enables the air conditioning system to run. In this application, the memory 3 may store the operating system and various application programs, and may also store code that executes the control method of the air conditioning system provided in the embodiments of this application.

[0041] Figure 2 A hardware structure block diagram of another air conditioning system provided in this application embodiment, such as... Figure 2 As shown, the air conditioning system 1 may also include a light detection device 4, a light prediction device 5, a photoelectric conversion device 6, an energy storage device 7, a photovoltaic power generation device 8, a dispatching device 9, an air conditioner 10, a signal transmission device 11, and a controller 1000. Figure 2 (Not shown in the image).

[0042] In some embodiments, the light detection device 4 is used to detect the actual light intensity at the current moment.

[0043] It should be noted that the light detection device 4 can be any detection device such as a light sensor, and this application does not limit the type of the light detection device 4.

[0044] In some embodiments, the light detection device may employ the hot spot effect principle and use detection components that are highly responsive to low light. These sensing components are similar to the photosensitive matrix of a camera and have a wire-wound electroplated multi-junction thermopile inside. The surface of the thermopile is coated with a black coating with high absorptivity. The hot junctions are on the sensing surface, while the cold junctions are located inside the device. The hot and cold junctions generate a thermoelectric potential difference.

[0045] Furthermore, within the linear range, the output signal is proportional to the solar irradiance. Visible light passing through the filter illuminates the inlet photodiode, which converts the visible light intensity into an electrical signal. This electrical signal then enters the sensor's processor system, which outputs the required binary signal, thus allowing the measurement of the actual light intensity at the second moment.

[0046] In some embodiments, the illumination prediction device 5 is used to predict the illumination intensity at a future time (such as a second time) to obtain the predicted illumination intensity at the future time.

[0047] Specifically, changes in cloud conditions in the atmosphere are the main reason for irregular changes in light intensity. This is because when the light intensity prediction device 5 predicts the light intensity for future moments, it can obtain weather information for future moments from the cloud or server, allowing the light intensity prediction device 5 to predict the light intensity for future moments based on the weather information for future moments.

[0048] Optionally, the illumination prediction device 5 can preset an illumination prediction model, input the weather information of future times into the illumination prediction model for calculation, and obtain the predicted illumination intensity of future times.

[0049] In some embodiments, the illumination prediction model can use intelligent algorithm prediction methods such as neural network models, genetic algorithm models or support vector machines to predict solar irradiance and illumination intensity data, and the illumination intensity data should be predicted separately for different time periods of the day.

[0050] It should be noted that the illumination prediction method of the illumination prediction device 5 can also be other possible methods, and this application does not limit it.

[0051] In some embodiments, the illumination prediction device 5 can also predict the light radiation intensity at future times, and the prediction method is the same as the illumination prediction method described above, which will not be repeated here.

[0052] Furthermore, the illumination prediction device 5 can send the predicted illumination intensity and light radiation intensity to the photoelectric conversion device for output power conversion.

[0053] In some embodiments, the photoelectric conversion device 6 is used to calculate the output power of the predicted light intensity converted into electrical energy.

[0054] Specifically, after the illumination prediction device predicts the illumination intensity at the second moment, it sends the target illumination intensity to the photoelectric conversion device, which converts the predicted illumination intensity into electrical energy output power.

[0055] It should be noted that photoelectric conversion is the process of directly converting solar radiation energy into electrical energy through the photovoltaic effect. The principle of this process is that photons transfer energy to electrons, causing them to move and thus forming an electric current.

[0056] In some embodiments, the photoelectric conversion device 6 is also used to pre-store the output power of the air conditioner 10.

[0057] In some embodiments, the photoelectric conversion device 6 is also used to acquire the light radiation intensity and predict the light intensity at a second moment.

[0058] In some embodiments, the photoelectric conversion device 6 is also used to perform data comparison of power, light radiation intensity, and predicted light intensity.

[0059] In some embodiments, the photoelectric conversion device 6 may be a photoconductive device (such as a photoresistor, photodiode, phototransistor), a photovoltaic device (silicon photovoltaic cell), or a semiconductor light-emitting device (such as a light-emitting diode, light-emitting digital tube, optocoupler). This application does not limit the type of the photoelectric conversion device 6.

[0060] In some embodiments, the energy storage device 7 stores electrical energy and supplies power to the air conditioner 10.

[0061] It should be noted that the energy storage device 7 can be an energy storage device, an energy storage battery, or other possible energy storage devices. This application does not limit the type of energy storage device.

[0062] In some embodiments, the photovoltaic power generation device 8 generates electricity through sunlight and supplies power to the air conditioner 10.

[0063] In some embodiments, a photovoltaic power generation device consists of photovoltaic modules, a photovoltaic controller, an inverter, a battery, and other accessories (a battery is not required for grid connection). Photovoltaic power generation devices are classified into off-grid and grid-connected types depending on whether they rely on the public power system.

[0064] Among them, the off-grid system operates independently and does not rely on the power system. The off-grid photovoltaic power generation device is equipped with an energy storage device 7, which can ensure the stability of the system power and supply power to the air conditioner when the photovoltaic power generation device does not generate electricity at night or when the power generation is insufficient on cloudy or rainy days.

[0065] In some embodiments, the scheduling device 9 includes a power supply device 91. Figure 2 (not shown in the image) and scheduling control module 92 ( Figure 2 (Not shown in the image).

[0066] The power supply device 91 includes a first power supply device 911 ( Figure 2 (not shown in the image) and second power supply device 912 ( Figure 2 (Not shown in the image) The first power supply device is used to control the current switch between the power system and the energy storage device, and the second power supply device is used to control the current switch between the energy storage device and the air conditioner.

[0067] In some embodiments, the air conditioner 10 includes at least one air conditioner. This application does not limit the number of air conditioners in the air conditioner 10.

[0068] In some embodiments, the signal transmission device 11 is used to transmit signal information between various devices in the air conditioning system 1.

[0069] In the embodiments shown in this application, controller 1000 refers to a device that can generate operation control signals according to instruction opcodes and timing signals, instructing the air conditioning system 1 to execute control commands. Exemplarily, controller 1000 can be a central processing unit (CPU), a network processor (NP), a digital signal processor (DSP), a microprocessor, a microcontroller, a programmable logic device (PLD), or any combination thereof. Controller 1000 can also be other devices with processing functions, such as circuits, devices, or software modules; this application does not impose any limitations on this.

[0070] In addition, the controller 1000 can be used to control the various components inside the air conditioning system 1 so that each component can perform the predetermined functions of the air conditioning system 1.

[0071] Figure 3 This is a hardware configuration block diagram of an air conditioning system provided in accordance with an exemplary embodiment of this application. For example... Figure 3 As shown, the air conditioning system 1 may also include the following two items: communication interface 1003.

[0072] In some embodiments, the communication interface 1003 is used to establish communication connections with other network entities, such as establishing communication connections with terminal devices. The communication interface 1003 may include a radio frequency (RF) module, a cellular module, a wireless fidelity (WIFI) module, and a GPS module, etc. Taking an RF module as an example, the RF module can be used for signal reception and transmission; specifically, it sends received information to the controller 1000 for processing; additionally, it transmits signals generated by the controller 1000. Typically, the RF circuit may include, but is not limited to, an antenna, at least one amplifier, a transceiver, a coupler, a low-noise amplifier (LNA), a duplexer, etc.

[0073] Those skilled in the art will understand that Figure 3 The hardware structure shown does not constitute a limitation on this air conditioning system. The air conditioning system may include more or fewer components than shown, or combine certain components, or have different component arrangements.

[0074] Figure 4 An internal interaction diagram of an air conditioning system provided in an embodiment of this application is shown below. Figure 4As shown, the power unit of the air conditioner 10 includes an AC-DC module 1, a DC-AC module and a compressor M. The electrical energy generated by the photovoltaic power generation device 8 can be directly supplied to the air conditioner 10 or stored in the energy storage device 7.

[0075] In some embodiments, the energy storage device 7 can also purchase electricity from the power system for storage.

[0076] In some embodiments, the light detection device 4 and the light prediction device 5 obtain the actual light intensity, the actual light radiation intensity, the predicted light intensity, and the predicted light radiation intensity based on the solar radiation intensity and the light intensity.

[0077] Furthermore, the photoelectric conversion device 6 can calculate the output power of the predicted light intensity converted into electrical energy based on the obtained predicted light intensity and predicted light radiation intensity, and transmit the actual light intensity, actual light radiation intensity, and the output power of the predicted light intensity converted into electrical energy to the scheduling device 9 through the signal transmission device 11. The scheduling control module 92 selects the target energy storage mode and target power supply mode of the air conditioning system based on the actual light intensity, actual light radiation intensity, and the output power of the predicted light intensity converted into electrical energy.

[0078] In some embodiments, AC-DC module 1 and AC-DC module 2 are used to convert alternating current into direct current.

[0079] In some embodiments, the DC-AC module is used to convert the DC power supply of a power system into an AC power supply with stable output voltage and frequency.

[0080] Figure 5 A flowchart illustrating a control method for an air conditioning system provided in this application embodiment is shown below. Figure 5 As shown, the method includes the following steps: S101, The controller obtains the predicted light intensity at the second moment.

[0081] Optionally, the controller can use a light prediction device to predict the light intensity at the second moment from the first moment, and obtain the predicted light intensity.

[0082] The first moment refers to the time before the second moment.

[0083] For example, the first time can be 8:00, 10:00, 12:00, 14:00 of today, etc., and the second time can be 8:00, 10:00, 12:00, 14:00 of the next day, etc.

[0084] Specifically, the controller can obtain the predicted light intensity for 8:00 the next day at 8:00 today through the light prediction device, and can obtain the predicted light intensity for 14:00 the next day at 12:00 today through the light prediction device.

[0085] In some embodiments, since there is a correlation between light intensity and the power generation of a photovoltaic power generation device, the predicted power generation at the second moment can be predicted by obtaining the predicted light intensity at the second moment, thereby predicting whether the predicted power generation can meet the stable operation of the air conditioner.

[0086] S102. The controller determines the target energy storage method of the air conditioning system based on the predicted light intensity and the input power of the air conditioner under stable operating conditions.

[0087] In some embodiments, the controller can determine the target energy storage method for the air conditioning system based on predicted light intensity. Figure 6 This is a flowchart illustrating another control method for an air conditioning system provided in an embodiment of this application, used for the target energy storage method of the air conditioning system, such as... Figure 6 As shown, the method includes the following steps: S201, The controller obtains the output power of the photovoltaic power generation device in converting the predicted light intensity into electrical energy.

[0088] Optionally, the controller can obtain the output power of the photovoltaic power generation device in converting the predicted light intensity into electrical energy through a photoelectric conversion device.

[0089] In some embodiments, after the controller obtains the predicted light intensity at a second moment through the light prediction device, it inputs the predicted light intensity to the photoelectric conversion device and calculates the output power of the photovoltaic power generation device in converting the predicted light intensity into electrical energy.

[0090] In some embodiments, the stable operating status of the air conditioner is used to indicate that the input power of the air conditioner can meet the user's temperature regulation needs under the current power storage capacity.

[0091] It should be noted that the input power of the air conditioner under stable operating conditions is set and stored in the memory by the air conditioning system manufacturer. The input power of the air conditioner under stable operating conditions includes rated power and maximum power data. Different air conditioning system manufacturers set different input power for the air conditioner under stable operating conditions, and this application does not limit this.

[0092] S202. The controller determines the target energy storage method of the air conditioning system based on the output power and input power.

[0093] The target energy storage methods include purchasing electricity from the power system and storing it in energy storage devices, and not storing energy.

[0094] In some embodiments, after the controller determines the output power of the predicted light intensity converted into electrical energy and the input power of the air conditioner under stable operating conditions, it can determine the target energy storage method of the air conditioning system based on the output power and the input power. Figure 7 This is a flowchart illustrating another control method for an air conditioning system provided in an embodiment of this application, used for the target energy storage method of the air conditioning system, such as... Figure 7 As shown, the method includes the following steps: S301. When the output power is less than or equal to the product of the input power and the power correction coefficient, the controller determines that the target energy storage method of the air conditioning system is to purchase electricity from the power system and store it in the energy storage device.

[0095] It should be noted that the power correction coefficient is used to compensate for overestimation of light radiation intensity and light intensity. Its value is correlated with the accuracy of the light prediction model, and its value can be gradually corrected according to the operation of the entire set of equipment.

[0096] Optionally, the power correction factor can be α.

[0097] In some embodiments, when the output power of the photovoltaic power generation device in converting the predicted light intensity into electrical energy is less than or equal to the product of the input power and the power correction coefficient, the amount of electricity generated by the solar power generation cannot meet the input power required for the stable operation of the air conditioner. Therefore, the photovoltaic power generation device cannot be relied upon alone, and electricity needs to be purchased from the power system and stored in an energy storage device in advance for use by the air conditioner.

[0098] In some embodiments, there is a correlation between the output power of the photovoltaic power generation device that converts the predicted light intensity into electrical energy and the predicted light radiation intensity. The calculation method for the output power of the predicted light intensity into electrical energy is shown in formula (1): Formula (1) in, Let S be the output power of the photovoltaic power generation device that converts the predicted light intensity into electrical energy, R be the area of ​​the photovoltaic power generation device, a be the predicted light radiation intensity, and a be the photoelectric conversion efficiency.

[0099] Furthermore, in terms of output power Less than or equal to input power When multiplied by the power correction factor α, that is, in ≤ In this case, the target energy storage method for the air conditioning system is to purchase electricity from the power system and store it in the energy storage device.

[0100] S302. When the output power is greater than the product of the input power and the power correction coefficient, the target energy storage mode of the air conditioning system is determined to be no energy storage.

[0101] In some embodiments, when the output power of the photovoltaic power generation device that converts the predicted light intensity into electrical energy is greater than the product of the input power and the power correction factor, the electricity generated by the solar power generation can meet the input power required for the stable operation of the air conditioner, so there is no need to purchase electricity from the power system and store it in the energy storage device in advance.

[0102] For example, in output power and input power When the ratio between them is less than or equal to the power correction factor α, that is, when > In this case, the target energy storage method for the air conditioning system is determined to be no energy storage.

[0103] S103, The controller controls the air conditioning system to store electricity based on the target energy storage method.

[0104] In some embodiments, once the target energy storage method of the air conditioning system is determined, the controller controls the air conditioning system to store electricity based on the target energy storage method.

[0105] For example, when the controller determines that the target energy storage method of the air conditioning system is to purchase electricity from the power system and store it in the energy storage device, the controller controls the dispatching device to open the switch from the power system to the energy storage device, and store the electricity from the power system in the energy storage device.

[0106] For example, when the controller determines that the target energy storage mode of the air conditioning system is no energy storage, the air conditioning system does not store electrical energy at night, and the next day the photovoltaic power generation device directly supplies power to the air conditioner, and stores the excess electricity in the energy storage device.

[0107] S104, The controller obtains the actual light intensity at the second moment.

[0108] Optionally, the controller can obtain the actual light intensity by detecting it at a second moment using a light detection device.

[0109] S105. The controller determines the target power supply mode for the air conditioner based on the predicted light intensity and the actual light intensity.

[0110] In some embodiments, after the controller determines the actual light intensity and the predicted light intensity at the second moment, it can determine the target power supply mode of the air conditioning system based on the actual light intensity and the predicted light intensity. Figure 8 This is a flowchart illustrating another control method for an air conditioning system provided in an embodiment of this application, used for the target power supply mode of the air conditioning system, such as... Figure 8 As shown, the method includes the following steps: S401. When the actual light intensity is less than or equal to the product of the predicted light intensity and the light correction coefficient, the controller determines that the target power supply method for the air conditioner is to be powered by the energy storage device.

[0111] It should be noted that the illumination correction coefficient is used to compensate for situations where the predicted light radiation intensity and illumination intensity are too high. Its value is correlated and matched with the accuracy of the illumination prediction model, and its value can be gradually corrected according to the operation of the entire set of equipment.

[0112] Optionally, the illumination correction factor can be... .

[0113] In some embodiments, if the actual light intensity is less than or equal to the product of the predicted light intensity and the light correction coefficient, it means that the actual light intensity at the second moment is approximately equal to, slightly less than, or much less than the predicted light intensity. In this case, the electrical energy converted from the light intensity may not be able to maintain the stable operation of the air conditioner. Therefore, it is necessary to control the energy storage device of the air conditioning system to open and supply power to the air conditioner.

[0114] For example, within one hour of sunrise, the average of multiple actual light intensities detected by the light detection device is the actual light intensity, and the average of multiple predicted light intensities for the corresponding time period predicted by the light prediction device at the first moment is the predicted light intensity.

[0115] Furthermore, in actual light intensity Less than or equal to the predicted light intensity With illumination correction factor In the case of the product of, that is, in In this case, the controller determines that the target power supply method for the air conditioner is through the energy storage device.

[0116] S402. When the actual light intensity is greater than the product of the predicted light intensity and the light correction coefficient, the controller determines that the target power supply mode for the air conditioner is to be powered by a photovoltaic power generation device.

[0117] In some embodiments, if the actual light intensity is greater than the product of the predicted light intensity and the light correction coefficient, it indicates that the actual light intensity at the second moment is much greater than the predicted light intensity. At this time, the electrical energy converted from the light intensity can maintain the stable operation of the air conditioner. Therefore, it is not necessary to supply power to the air conditioner through the energy storage device. Instead, the photovoltaic power generation device of the air conditioning system is turned on to generate electricity and supply power to the air conditioner.

[0118] For example, in actual light intensity Greater than the predicted light intensity Greater than the predicted light intensity and the light correction factor In the case of the product, that is In this case, the controller determines that the target power supply method for the air conditioner is through a photovoltaic power generation device.

[0119] S106. The controller controls the air conditioning system to supply power to the air conditioner based on the target power supply method.

[0120] In some embodiments, once the target power supply method of the air conditioning system is determined, the controller controls the air conditioning system to supply power to the air conditioner based on the target power supply method.

[0121] In some embodiments, the controller can supply power to the air conditioner by controlling the scheduling device in the air conditioning system. Figure 9 This is a flowchart illustrating another control method for an air conditioning system provided in an embodiment of this application, used to control a scheduling device to supply power to the air conditioner, such as... Figure 9 As shown, the method includes the following steps: S501. When the target power supply method for the air conditioner is through the energy storage device, the controller controls the dispatching device to open the current switch between the power system and the energy storage device.

[0122] For example, when the controller determines that the target power supply method for the air conditioner is through the energy storage device, the controller controls the dispatching device to open the current switch between the power system and the energy storage device, so that the electrical energy in the energy storage device can be supplied to the air conditioner to power it.

[0123] S502. When the target power supply method for the air conditioner is through photovoltaic power generation device, the control and dispatching device closes the current switch between the energy storage device and the air conditioner and opens the current switch between the photovoltaic power generation device and the air conditioner.

[0124] For example, when the controller determines that the target power supply method for the air conditioner is through the photovoltaic power generation device, there is no need to supply power to the air conditioner through the energy storage device. The controller controls the scheduling device to close the current switch between the energy storage device and the air conditioner, and open the current switch between the photovoltaic power generation device and the air conditioner, so that the photovoltaic power generation device generates electricity to supply power to the air conditioner.

[0125] In some embodiments, the power correction factor and the illumination correction factor can be natural numbers greater than 1, that is... , >1.

[0126] For example, with , Taking 1.1 as an example, during the commissioning and operation phase of the air conditioning system, the predicted solar radiation intensity, predicted solar irradiance, actual photovoltaic power generation, predicted solar irradiance, and input power required for stable operation of the air conditioner are recorded for each time period from sunrise to sunset (e.g., from 8:00 AM to 4:00 PM, a total of 8 hours). These data are then used to form their respective data matrices, denoted by G, K, L, M, and N. The predicted solar radiation intensity is then converted into a photovoltaic power generation matrix J.

[0127] Furthermore, with a weekly value period and an hourly recording unit, each functional matrix contains 56 sets of data.

[0128] In some embodiments, a set of numbers from matrix J and matrix L are taken in sequence, such as ( , ), then it can form ( , ), ..., ( , A total of 56 sets of data were generated. The ratio of each set of data was calculated, which is the ratio of the predicted power generation per hour of the photovoltaic power generation device to the actual power generation, and recorded as matrix X.

[0129] In some embodiments, a set of numbers taken sequentially from matrix K and matrix M is ( , ), then it can form ( , ), ..., ( , A total of 56 sets of data were generated. The ratio of each set of data was calculated, which is the ratio of the predicted illuminance to the actual illuminance of the photovoltaic power generation device per hour, and recorded as a Y matrix.

[0130] In some embodiments, a set of numbers is taken sequentially from matrix J and matrix N as ( , ), then it can form ( , ), ..., ( , A total of 56 sets of data were generated. The ratio of each set of data was calculated, which is the ratio of the predicted power generation of the photovoltaic power generation device per hour to the actual power demand of the air conditioning, and recorded as a Z matrix.

[0131] It should be noted that the data in matrices X and Y mentioned above can be used as a reference for correcting the prediction model. The model should be corrected to a ratio between 0.8 and 1.3 as much as possible. The closer the ratio is to 1, the more accurate the prediction model will be.

[0132] Furthermore, α is the average of all data greater than 1 in matrix Z, and β is the average of all data greater than 1 in matrix Y.

[0133] It should be noted that due to regional differences, the sunrise or sunset times are not consistent, and the matrix values ​​should conform to the local actual situation. In addition, the frequency of self-correction of α and β coefficients and the value change period can be set. For example, the recording unit can be changed to 0.5 hours or 2 hours, and the value period can be changed to 3 days or two weeks, etc.

[0134] Meanwhile, the matrix data needs to be updated in real time, and the data should be selected and discarded according to different value settings. The prediction model and value settings should be continuously optimized based on the power supply allocation in the system.

[0135] The technical solution provided in this application provides at least the following beneficial effects: This technical solution obtains the predicted light intensity at the second moment from the first moment, makes a preliminary prediction of the weather conditions and light intensity at the second moment, and determines whether the electricity generated by the predicted light intensity can meet the stable operation of the air conditioner based on the predicted light intensity and the input power of the air conditioner under stable operation. This allows for the selection of the target energy storage method for the air conditioning system, avoiding the waste of power resources. In addition, the actual light intensity is obtained at the second moment, and the target power supply method for the air conditioner is determined based on the predicted light intensity and the actual light intensity, so as to avoid the initial power supply method being insufficient to support the stable operation of the air conditioner. Thus, an air conditioning system with stable energy storage, reasonable power supply, and independent operation is formed.

[0136] In some embodiments, steps S201-S202 and S301-S302 described above can also be achieved through methods such as... Figure 10 The method shown is implemented as follows: Figure 10 This is a flowchart illustrating another control method for an air conditioning system provided in an embodiment of this application, used to determine the energy storage method of the air conditioning system, such as... Figure 10 As shown, the method includes the following steps: S11, The controller obtains the predicted light intensity.

[0137] Optionally, the controller can obtain the predicted light intensity for future times through a light prediction device.

[0138] S12, The controller obtains the output power of the photovoltaic power generation device that converts the predicted light intensity into electrical energy. .

[0139] Optionally, the controller can obtain the output power of the photovoltaic power generation device that converts the predicted light intensity into electrical energy through a photoelectric conversion device. .

[0140] In some embodiments, after the controller obtains the predicted light intensity for a future time through the light prediction device, it inputs the predicted light intensity to the photoelectric conversion device and calculates the output power of converting the predicted light intensity into electrical energy. .

[0141] S13, in ≤ In this case, the target energy storage method for the air conditioning system is to purchase electricity from the power system and store it in the energy storage device.

[0142] in, This refers to the input power of the air conditioner under stable operating conditions.

[0143] S14, in > In this case, the target energy storage method for the air conditioning system is determined to be no energy storage.

[0144] In some embodiments, steps S401-S402 described above can also be performed as follows: Figure 11 The method shown is implemented as follows: Figure 11 This is a flowchart illustrating another control method for an air conditioning system provided in an embodiment of this application, used to determine the power supply method of the air conditioning system, such as... Figure 11 As shown, the method includes the following steps: S21, The controller obtains the actual light intensity. and predicting light intensity .

[0145] S22, in In this case, the controller determines that the target power supply method for the air conditioner is through the energy storage device.

[0146] S24, in In this case, the controller determines that the target power supply method for the air conditioner is through the energy storage device.

[0147] In this embodiment of the invention, electronic products can be divided into functional modules according to the above method examples. For example, each function can be divided into its own functional module, or two or more functions can be integrated into one processing module. The integrated module can be implemented in hardware or as a software functional module. It should be noted that the module division in this embodiment is illustrative and only represents one logical functional division; other division methods may be used in actual implementation.

[0148] When dividing each function into modules according to its corresponding function. Figure 12 This is a schematic diagram of the structure of a control device for an air conditioning system provided in an embodiment of this application, as shown below. Figure 12 As shown, the control device 200 of the air conditioning system may include: an acquisition module 201 and a processing module 202.

[0149] In some embodiments, the acquisition module 201 is used to acquire the predicted light intensity obtained by the light prediction device predicting the light intensity at the second time at the first time.

[0150] In some embodiments, the processing module 202 is used to determine the target energy storage method of the air conditioning system based on the predicted light intensity and the input power of the air conditioner under stable operating conditions.

[0151] In some embodiments, the processing module 202 is further configured to control the air conditioning system to store electricity based on the target energy storage method.

[0152] In some embodiments, the acquisition module 201 is further configured to acquire the actual light intensity detected by the light detection device at a second moment.

[0153] In some embodiments, the processing module 202 is further configured to determine the target power supply mode of the air conditioner based on the predicted light intensity and the actual light intensity.

[0154] In some embodiments, the processing module 202 is further configured to control the air conditioning system to supply power to the air conditioner based on the target power supply method.

[0155] In some embodiments, the acquisition module 201 is further configured to acquire the output power of a photovoltaic power generation device that converts predicted light intensity into electrical energy.

[0156] In some embodiments, the processing module 202 is further configured to determine the target energy storage method of the air conditioning system based on the output power and the input power.

[0157] In some embodiments, the processing module 202 is further configured to determine that the target energy storage method for the air conditioning system is to purchase electricity from the power system and store it in the energy storage device when the output power is less than or equal to the product of the input power and the power correction coefficient.

[0158] In some embodiments, the processing module 202 is further configured to determine that the target energy storage mode of the air conditioning system is no energy storage when the output power is greater than the product of the input power and the power correction coefficient.

[0159] In some embodiments, the processing module 202 is further configured to determine that the target power supply method for the air conditioner is through an energy storage device when the actual light intensity is less than or equal to the product of the predicted light intensity and the light correction coefficient.

[0160] In some embodiments, the processing module 202 is further configured to determine that the target power supply method for the air conditioner is power supply through a photovoltaic power generation device when the actual light intensity is greater than the product of the predicted light intensity and the light correction coefficient.

[0161] In some embodiments, the processing module 202 is further configured to control the dispatching device to open the current switch between the power system and the energy storage device when the target power supply mode of the air conditioner is power supply through the energy storage device.

[0162] In some embodiments, the processing module 202 is further configured to control the scheduling device to close the current switch between the energy storage device and the air conditioner and open the current switch between the photovoltaic power generation device and the air conditioner when the target power supply mode of the air conditioner is power supply through the photovoltaic power generation device.

[0163] When using integrated units, Figure 13 A schematic diagram of another possible structure of the control device for the air conditioning system involved in the above embodiments is shown. For example... Figure 13 As shown, the control device 200 of the air conditioning system may further include a storage module 203 and a communication module 204. The communication module 204 can be used to support communication between the temperature determining device and other entities. The storage module 203 is used to store the program code and data of the temperature determining device.

[0164] In some embodiments, processing module 202 may be a processor or a controller. Storage module 203 may be a memory. Communication module 204 may be a transceiver, transceiver circuit, or communication interface, etc.

[0165] In this configuration, when the processing module 202 is a processor, the storage module 203 is a memory, and the communication module 204 is a transceiver, the processor, transceiver, and memory can be connected via a bus. The bus can be a Peripheral Component Interconnect (PCI) bus or an Extended Industry Standard Architecture (EISA) bus, etc. Buses can be categorized as address buses, data buses, control buses, etc.

[0166] This invention also provides a computer-readable storage medium including computer-executable instructions that, when executed on a computer, cause the computer to perform the method provided in the above embodiments.

[0167] This invention also provides a computer program product that can be directly loaded into a memory and contains software code. After being loaded and executed by a computer, the computer program product can implement the methods provided in the above embodiments.

[0168] Those skilled in the art will recognize that, in one or more of the examples above, the functions described in this invention can be implemented using hardware, software, firmware, or any combination thereof. When implemented in software, these functions can be stored in a computer-readable medium or transmitted as one or more instructions or code on a computer-readable medium. Computer-readable media include computer storage media and communication media, wherein communication media include any medium that facilitates the transfer of a computer program from one place to another. Storage media can be any available medium accessible to a general-purpose or special-purpose computer.

[0169] Through the above description of the implementation methods, those skilled in the art can clearly understand that, for the sake of convenience and brevity, only the division of the above functional modules is used as an example. In actual applications, the above functions can be assigned to different functional modules as needed, that is, the internal structure of the device can be divided into different functional modules to complete all or part of the functions described above.

[0170] In the several embodiments provided in this application, it should be understood that the disclosed apparatus and methods can be implemented in other ways. For example, the apparatus embodiments described above are merely exemplary; for instance, the division of modules or units is only a logical functional division, and there may be other division methods in actual implementation. For example, multiple units or components may be combined or integrated into another device, or some features may be ignored or not executed. Furthermore, the coupling or direct coupling or communication connection shown or discussed between each other may be through some interfaces; the indirect coupling or communication connection between devices or units may be electrical, mechanical, or other forms. Units described as separate components may or may not be physically separate; components shown as units may be one physical unit or multiple physical units, i.e., they may be located in one place or distributed in multiple different places. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0171] Furthermore, the functional units in the various embodiments of this invention can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit. The integrated unit can be implemented in hardware or as a software functional unit. If the integrated unit is implemented as a software functional unit and sold or used as an independent product, it can be stored in a readable storage medium. Based on this understanding, the technical solution of the embodiments of this application, in essence, or the part that contributes to the prior art, or all or part of the technical solution, can be embodied in the form of a software product. This software product is stored in a storage medium and includes several instructions to cause a device (which may be a microcontroller, chip, etc.) or processor to execute all or part of the steps of the methods in the various embodiments of this invention. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, ROM, RAM, magnetic disks, or optical disks.

[0172] The above are merely specific embodiments of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. An air conditioning system, characterized in that, include: Air conditioner; A photovoltaic power generation device for generating electricity through sunlight and supplying power to the air conditioner; A light prediction device used to predict the light intensity at future times; A light intensity detection device is used to detect the actual light intensity. The controller is configured as follows: The light intensity predicted by the light prediction device at the first moment is obtained as a prediction of the light intensity at the second moment, and the predicted light intensity is obtained. Obtain the output power of the photovoltaic power generation device in converting the predicted light intensity into electrical energy; The target energy storage method of the air conditioning system is determined based on the output power and input power. The air conditioning system is controlled to store electricity based on the target energy storage method; The actual light intensity detected by the light detection device at the second moment is obtained; If the actual light intensity is less than or equal to the product of the predicted light intensity and the light correction coefficient, the target power supply method for the air conditioner is determined to be power supply through an energy storage device. If the actual light intensity is greater than the product of the predicted light intensity and the light correction coefficient, the target power supply method for the air conditioner is determined to be power supply through the photovoltaic power generation device. The air conditioning system is controlled to supply power to the air conditioner based on the target power supply method; The air conditioning system also includes: An energy storage device for storing electrical energy and supplying power to the air conditioner; The controller is configured to determine the target energy storage method of the air conditioning system based on the output power and the input power, specifically configured as follows: If the output power is less than or equal to the product of the input power and the power correction coefficient, the target energy storage method for the air conditioning system is determined to be purchasing electricity from the power system and storing it in the energy storage device. If the output power is greater than the product of the input power and the power correction coefficient, the target energy storage mode of the air conditioning system is determined to be no energy storage.

2. The air conditioning system according to claim 1, characterized in that, The air conditioning system also includes: A dispatching device is used to control the current switch between the power system and the energy storage device, and to control the current switch between the energy storage device and the air conditioner. The controller is also configured to: When the target power supply method for the air conditioner is power supply through the energy storage device, the dispatching device is controlled to open the current switch between the power system and the energy storage device; When the target power supply method for the air conditioner is power supply through the photovoltaic power generation device, the scheduling device is controlled to close the current switch between the energy storage device and the air conditioner and open the current switch between the photovoltaic power generation device and the air conditioner.

3. A control method for an air conditioning system, characterized in that, include: The illumination prediction device predicts the illumination intensity at the second moment from the first moment, and obtains the predicted illumination intensity. The output power of the photovoltaic power generation device in converting the predicted light intensity into electrical energy is obtained; The target energy storage method of the air conditioning system is determined based on the output power and input power. The air conditioning system is controlled to store electricity based on the target energy storage method; The actual light intensity is obtained by the light detection device at the second moment; If the actual light intensity is less than or equal to the product of the predicted light intensity and the light correction coefficient, the target power supply method for the air conditioner is determined to be power supply through an energy storage device. If the actual light intensity is greater than the product of the predicted light intensity and the light correction coefficient, the target power supply method for the air conditioner is determined to be power supply through the photovoltaic power generation device. The air conditioning system is controlled to supply power to the air conditioner based on the target power supply method; Determining the target energy storage method for the air conditioning system based on the output power and the input power includes: If the output power is less than or equal to the product of the input power and the power correction coefficient, the target energy storage method for the air conditioning system is determined to be purchasing electricity from the power system and storing it in the energy storage device. If the output power is greater than the product of the input power and the power correction coefficient, the target energy storage mode of the air conditioning system is determined to be no energy storage.

4. The method according to claim 3, characterized in that, The method further includes: When the target power supply method for the air conditioner is power supply through the energy storage device, the control dispatching device opens the current switch between the power system and the energy storage device. When the target power supply method for the air conditioner is power supply through the photovoltaic power generation device, the scheduling device is controlled to close the current switch between the energy storage device and the air conditioner and open the current switch between the photovoltaic power generation device and the air conditioner.

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