Photovoltaic air conditioning unit control method and device, photovoltaic air conditioning unit and storage medium
By acquiring the grid connection and off-grid status and illumination conditions of photovoltaic air conditioning units, recording the operating power and number of faults before shutdown, and dynamically adjusting the operating power to extend the operating time of photovoltaic air conditioning units, the problem of insufficient market competitiveness of photovoltaic air conditioning units under insufficient illumination is solved, making them suitable for the power supply needs of remote areas.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- GREE ELECTRIC APPLIANCE INC OF ZHUHAI
- Filing Date
- 2026-01-27
- Publication Date
- 2026-04-10
AI Technical Summary
Traditional photovoltaic air conditioning units with energy storage batteries are not competitive in the market when there is insufficient sunlight. Energy storage batteries are expensive, complex to maintain, and pose safety risks.
By acquiring the grid connection and off-grid status and illumination conditions of photovoltaic air conditioning units, recording the operating power and number of faults before a shutdown, the operating power can be dynamically adjusted to extend the operating time and avoid reliance on energy storage batteries.
When photovoltaic air conditioning units are off-grid and sunlight is insufficient, the operating power is dynamically controlled to extend the operating time, meet the power supply needs of remote areas, and improve market competitiveness.
Smart Images
Figure CN121828883A_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of photovoltaic air conditioning technology, and in particular to a photovoltaic air conditioning unit control method, device, photovoltaic air conditioning unit and storage medium. Background Technology
[0002] Against the backdrop of the global energy structure accelerating its transition towards cleaner and lower-carbon energy, photovoltaic (PV) power generation has become a core pathway to achieving "dual-carbon" goals, leading to the emergence of PV air conditioning units. However, traditional PV air conditioning units typically rely on grid power or energy storage batteries for power in situations with insufficient sunlight. The high cost of energy storage batteries (accounting for approximately 30% to 50% of the total cost), complex maintenance, limited lifespan, and safety risks hinder the market competitiveness of PV air conditioning units with integrated energy storage. Therefore, there is an urgent market need for a battery-free PV air conditioning unit that can operate both on and off the grid to meet the needs of remote rural areas, islands, border outposts, emergency rescue operations, temporary construction sites, and other regions with unstable power supply. Summary of the Invention
[0003] This application provides a photovoltaic air conditioning unit control method, device, photovoltaic air conditioning unit, and storage medium to solve the problem of insufficient market competitiveness of traditional photovoltaic air conditioning units with energy storage batteries.
[0004] In a first aspect, embodiments of this application provide a photovoltaic air conditioning unit control method, the method comprising: Obtain the grid-connected and off-grid status of the photovoltaic air conditioning unit and the light conditions of its environment; When the photovoltaic air conditioning unit is in an off-grid state and the sunlight is insufficient, the operating power and number of failures of the photovoltaic air conditioning unit before each failure shutdown are recorded, and the operating power of the photovoltaic air conditioning unit is dynamically controlled based on the recorded operating power and number of failures each time.
[0005] Optionally, the step of recording the operating power and number of faults of the photovoltaic air conditioning unit before each fault shutdown, and dynamically controlling the operating power of the photovoltaic air conditioning unit based on the recorded operating power and number of faults each time, includes: Record the operating power and number of faults of the photovoltaic air conditioning unit before the i-th fault shutdown, where i is an integer greater than or equal to 1; In the case of restarting the photovoltaic air conditioning unit after the i-th failure shutdown, the target operating power and target duration are determined based on the operating power and number of failures of the photovoltaic air conditioning unit before the i-th failure shutdown. The photovoltaic air conditioning unit is controlled to operate continuously at the target operating power, and it is determined whether the continuous operating time of the photovoltaic air conditioning unit has reached the target duration; If the continuous operating time of the photovoltaic air conditioning unit does not reach the target duration, record the operating power and number of faults of the photovoltaic air conditioning unit before the (i+1)th fault shutdown. In the case of restarting the photovoltaic air conditioning unit after the (i+1)th failure shutdown, the new target operating power and the new target duration are determined based on the operating power and number of failures of the photovoltaic air conditioning unit before the (i+1)th failure shutdown. The photovoltaic air conditioning unit is controlled to operate continuously at the new target operating power, and it is determined whether the continuous operating time of the photovoltaic air conditioning unit has reached the new target time. This process is repeated until the continuous operating time of the photovoltaic air conditioning unit reaches the target time corresponding to the latest fault shutdown.
[0006] Optionally, determining the target operating power and target duration based on the operating power and number of faults of the photovoltaic air conditioning unit before the i-th fault shutdown includes: Calculate the difference between the operating power of the photovoltaic air conditioning unit before the i-th failure shutdown and the preset power threshold, and determine the difference as the target operating power, wherein the preset power threshold is less than the operating power of the photovoltaic air conditioning unit before the i-th failure shutdown; Calculate the product between the number of failures of the photovoltaic air conditioning unit before the i-th failure shutdown and a preset coefficient, and determine the product as the target duration. The preset coefficient can be adjusted according to the climate conditions of the region where the photovoltaic air conditioning unit is located and / or the environment in which the photovoltaic air conditioning unit is located.
[0007] Optionally, the method further includes: When the continuous operating time of the photovoltaic air conditioning unit reaches the target duration corresponding to the latest fault shutdown, detect whether the indoor ambient temperature reaches the user-set temperature. When the indoor ambient temperature reaches the user-set temperature, the photovoltaic air conditioning unit continues to operate at the target operating power corresponding to the latest fault shutdown. If the indoor ambient temperature does not reach the user-set temperature, the operating power of the photovoltaic air conditioning unit is increased. During the process of increasing the operating power of the photovoltaic air conditioning unit, the operating power and the number of faults before each fault shutdown are recorded. Based on the recorded operating power and the number of faults, the operating power of the photovoltaic air conditioning unit is dynamically controlled.
[0008] Optionally, after obtaining the grid connection / off-grid status of the photovoltaic air conditioning unit and the ambient light conditions, the method further includes: When the photovoltaic air conditioning unit is in an off-grid state and there is sufficient sunlight, it operates using the energy provided by the photovoltaic modules in the photovoltaic air conditioning unit.
[0009] Optionally, after obtaining the grid connection / off-grid status of the photovoltaic air conditioning unit and the ambient light conditions, the method further includes: When the photovoltaic air conditioning unit is in grid-connected state and there is sufficient sunlight, it will preferentially utilize the energy provided by the photovoltaic modules in the photovoltaic air conditioning unit for operation.
[0010] Optionally, after obtaining the grid connection / off-grid status of the photovoltaic air conditioning unit and the ambient light conditions, the method further includes: When the photovoltaic air conditioning unit is in grid-connected state and sunlight is insufficient, it will prioritize the use of energy provided by the mains power supply for operation.
[0011] Secondly, embodiments of this application also provide a photovoltaic air conditioning unit control device, the device comprising: The acquisition module is used to acquire the grid connection and off-grid status of the photovoltaic air conditioning unit and the light conditions of its environment; The first control module is used to record the operating power and number of faults of the photovoltaic air conditioning unit before each failure shutdown when the photovoltaic air conditioning unit is in an off-grid state and the sunlight is insufficient, and to dynamically control the operating power of the photovoltaic air conditioning unit based on the recorded operating power and number of faults each time.
[0012] Thirdly, this application also provides a photovoltaic air conditioning unit, including a processor, a communication interface, a memory, and a communication bus, wherein the processor, the communication interface, and the memory communicate with each other through the communication bus; Memory, used to store computer programs; The processor, when executing a program stored in memory, implements the photovoltaic air conditioning unit control method described in the first aspect.
[0013] Fourthly, embodiments of this application also provide a computer-readable storage medium having a computer program stored thereon, wherein the computer program, when executed by a processor, implements the photovoltaic air conditioning unit control method described in the first aspect.
[0014] Compared with the prior art, the technical solution provided in this application has the following advantages: The method provided in this application obtains the grid-connected and off-grid status of the photovoltaic air conditioning unit and the illumination conditions of the environment; when the photovoltaic air conditioning unit is in an off-grid state and the illumination is insufficient, it records the operating power and the number of faults of the photovoltaic air conditioning unit before each fault shutdown, and dynamically controls the operating power of the photovoltaic air conditioning unit based on the recorded operating power and the number of faults each time. Through the above method, when the photovoltaic air conditioning unit is in an off-grid state and the illumination is insufficient, it is possible to dynamically control the operating power of the photovoltaic air conditioning unit based on the recorded operating power and the number of faults each time, so as to extend the operating time of the photovoltaic air conditioning unit as much as possible without relying on energy storage batteries, to meet the needs of remote rural areas, islands, border outposts, emergency rescue, temporary construction sites and other areas with unstable power supply, thereby achieving the technical effect of improving the market competitiveness of photovoltaic air conditioning units. Attached Figure Description
[0015] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application.
[0016] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0017] One embodiment or practice is illustrated by way of example with the corresponding pictures in the accompanying drawings. These illustrative descriptions do not constitute a limitation on the embodiments. Elements with the same reference numerals in the drawings are represented as similar elements. Unless otherwise stated, the figures in the drawings are not to be limited by scale.
[0018] Figure 1 A schematic flowchart illustrating a photovoltaic air conditioning unit control method provided in an embodiment of this application; Figure 2 A schematic flowchart illustrating another photovoltaic air conditioning unit control method provided in this application embodiment; Figure 3 This is a schematic diagram of the structure of a photovoltaic air conditioning unit control device provided in an embodiment of this application; Figure 4 This is a schematic diagram of the structure of a photovoltaic air conditioning unit provided in an embodiment of this application; Figure 5 This is a schematic diagram of another photovoltaic air conditioning unit provided in the embodiments of this application. Detailed Implementation
[0019] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, 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, 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.
[0020] The following disclosure provides numerous different embodiments or examples for implementing various structures of this application. To simplify the disclosure, specific examples of components and arrangements are described below. These are merely examples and are not intended to limit the scope of this application. Furthermore, reference numerals and / or letters may be repeated in different examples. Such repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed.
[0021] To address the lack of market competitiveness of traditional photovoltaic air conditioning units with energy storage batteries, this application provides a photovoltaic air conditioning unit control method, device, photovoltaic air conditioning unit, and storage medium, which can improve the market competitiveness of photovoltaic air conditioning units.
[0022] See Figure 1 , Figure 1 This is a flowchart illustrating a photovoltaic air conditioning unit control method provided in an embodiment of this application. Figure 1 As shown, the photovoltaic air conditioning unit control method may include the following steps: Step S101: Obtain the grid connection / off-grid status of the photovoltaic air conditioning unit and the lighting conditions of its environment.
[0023] Specifically, the aforementioned photovoltaic air conditioning units refer to any photovoltaic air conditioning unit without energy storage batteries, which can be powered by the mains power grid or photovoltaic modules. The terms "grid-connected" and "off-grid" include grid-connected and off-grid states. Grid-connected state means connected to the mains power grid and able to power the air conditioning unit. Off-grid state means not connected to the mains power grid and unable to power the air conditioning unit. The aforementioned sunlight conditions directly affect the power generation of the photovoltaic modules. Sufficient sunlight means the photovoltaic modules can provide enough energy to the air conditioning unit, while insufficient sunlight means the photovoltaic modules cannot provide enough energy.
[0024] Step S102: When the photovoltaic air conditioning unit is in an off-grid state and the sunlight is insufficient, record the operating power and number of failures of the photovoltaic air conditioning unit before each failure shutdown, and dynamically control the operating power of the photovoltaic air conditioning unit based on the recorded operating power and number of failures each time.
[0025] Specifically, the aforementioned shutdown due to fault refers to a shutdown caused by the photovoltaic modules' power generation being lower than the operating power required by the photovoltaic air conditioning unit. The operating power of the photovoltaic air conditioning unit before each shutdown due to fault can be understood as the maximum operating power reached by the unit before each shutdown due to fault. This operating power before each shutdown due to fault is typically lower than the operating power corresponding to the user-set temperature. The aforementioned number of faults refers to the number of times the photovoltaic air conditioning unit has experienced a shutdown due to fault after this round of startup.
[0026] By employing the above methods, when the photovoltaic air conditioning unit is in an off-grid state and sunlight is insufficient, the operating power of the photovoltaic air conditioning unit can be dynamically controlled based on the recorded operating power and number of faults. This extends the operating time of the photovoltaic air conditioning unit as much as possible without relying on energy storage batteries, meeting the needs of remote rural areas, islands, border outposts, emergency rescue, temporary construction sites, and other areas with unstable power supply, thereby achieving the technical effect of improving the market competitiveness of photovoltaic air conditioning units.
[0027] In an optional embodiment, step S102, which involves recording the operating power and number of faults of the photovoltaic air conditioning unit before each fault shutdown, and dynamically controlling the operating power of the photovoltaic air conditioning unit based on the recorded operating power and number of faults, includes: Record the operating power and number of faults of the photovoltaic air conditioning unit before the i-th fault shutdown, where i is an integer greater than or equal to 1; In the case of restarting a photovoltaic air conditioning unit after the i-th failure shutdown, the target operating power and target duration are determined based on the operating power and number of failures of the photovoltaic air conditioning unit before the i-th failure shutdown. Control the photovoltaic air conditioning unit to operate continuously at the target operating power, and determine whether the continuous operating time of the photovoltaic air conditioning unit has reached the target duration; If the continuous operating time of the photovoltaic air conditioning unit does not reach the target time, record the operating power and number of faults of the photovoltaic air conditioning unit before the (i+1)th fault shutdown. In the case of restarting the photovoltaic air conditioning unit after the (i+1)th failure shutdown, a new target operating power and a new target duration are determined based on the operating power and number of failures of the photovoltaic air conditioning unit before the (i+1)th failure shutdown. The photovoltaic air conditioning unit is controlled to operate continuously according to the new target operating power, and it is determined whether the continuous operating time of the photovoltaic air conditioning unit has reached the new target time. This process is repeated until the continuous operating time of the photovoltaic air conditioning unit reaches the target time corresponding to the latest fault shutdown.
[0028] Specifically, when the photovoltaic air conditioning unit experiences its first failure shutdown, the operating power and number of failures before the first failure shutdown can be recorded. When the photovoltaic air conditioning unit is restarted, the target operating power and target duration can be determined based on the operating power and number of failures before the first failure shutdown. Then, the photovoltaic air conditioning unit can be controlled to continue operating at the target operating power, while simultaneously determining whether the continuous operating duration of the photovoltaic air conditioning unit has reached the target duration. If a second shutdown occurs before the continuous operating time of the photovoltaic air conditioning unit reaches the target duration, the operating power and number of failures of the photovoltaic air conditioning unit before the second shutdown can be recorded. When the photovoltaic air conditioning unit is restarted, a new target operating power and a new target duration can be determined based on the operating power and number of failures before the second shutdown. The photovoltaic air conditioning unit can then continue to operate at the new target operating power. At the same time, it can be determined whether the continuous operating time of the photovoltaic air conditioning unit has reached the new target duration. If a third shutdown occurs before the continuous operating time of the photovoltaic air conditioning unit reaches the new target duration, the above steps are repeated until the continuous operating time of the photovoltaic air conditioning unit reaches the target duration corresponding to the latest shutdown.
[0029] It should be noted that when the photovoltaic air conditioning unit restarts after each failure shutdown, the target operating power and target duration can be determined based on the operating power and number of failures before the latest failure shutdown. Specifically, the target operating power can be the operating power recorded before the latest failure shutdown minus a preset power threshold, or it can be the operating power recorded before the latest failure shutdown multiplied by a preset coefficient (within the range of 0 to 1), etc. The target duration can be determined directly based on the number of failures recorded before the latest failure shutdown, or it can be determined by multiplying the number of failures recorded before the latest failure shutdown by a preset coefficient, etc., and this application embodiment does not impose specific limitations.
[0030] Using the above method, the operating power of the photovoltaic air conditioning unit can be dynamically controlled based on the recorded operating power and number of failures each time, thereby finding the power that can make the photovoltaic air conditioning unit operate stably and achieving the goal of extending the operating time of the photovoltaic air conditioning unit.
[0031] In an optional embodiment, the above steps, based on the operating power and number of faults of the photovoltaic air conditioning unit before the i-th fault shutdown, to determine the target operating power and target duration, include: Calculate the difference between the operating power of the photovoltaic air conditioning unit before the i-th fault shutdown and the preset power threshold, and determine the difference as the target operating power, wherein the preset power threshold is less than the operating power of the photovoltaic air conditioning unit before the i-th fault shutdown; Calculate the product between the number of failures of the photovoltaic air conditioning unit before the i-th failure shutdown and a preset coefficient, and determine the target duration of the product. The preset coefficient can be adjusted according to the region where the photovoltaic air conditioning unit is located and / or the climatic conditions of the environment where the photovoltaic air conditioning unit is located.
[0032] Specifically, when determining the target operating power, the difference between the operating power of the photovoltaic air conditioning unit before the i-th fault shutdown and the preset power threshold can be calculated, and this difference can be determined as the target operating power. The preset power threshold can be set according to actual needs, such as 100W.
[0033] When determining the target duration, the product of the number of failures before the i-th failure shutdown of the photovoltaic air conditioning unit and a preset coefficient can be calculated, and this product can be used as the target duration. The preset coefficient can be set according to actual needs, such as 2, 5, 10, etc.; of course, it can also be dynamically adjusted according to the region where the photovoltaic air conditioning unit is located and / or the climatic conditions of the environment in which the photovoltaic air conditioning unit is located.
[0034] In other words, the photovoltaic air conditioning unit can use the operating power corresponding to the user-set temperature as the initial value of the target operating power. Each time the unit stops due to a fault, the target operating power is reduced by a preset power threshold (such as 100W) and the target duration is increased by a preset coefficient (such as 5 minutes). This cycle continues until the photovoltaic air conditioning unit reaches the latest calculated target duration under the latest calculated target operating power, indicating that the photovoltaic air conditioning unit can operate relatively stably under the target operating power.
[0035] Using the above method, the target operating power and target duration can be accurately determined based on the operating power and number of failures of the photovoltaic air conditioning unit before each failure shutdown. Then, based on the target operating power and target duration, the current operating power of the photovoltaic air conditioning unit can be dynamically controlled.
[0036] In an optional embodiment, the method further includes: When the continuous running time of the photovoltaic air conditioning unit reaches the target duration corresponding to the latest fault shutdown, check whether the indoor ambient temperature reaches the user-set temperature. When the indoor ambient temperature reaches the user-set temperature, the photovoltaic air conditioning unit will continue to operate at the target operating power corresponding to the latest fault shutdown. When the indoor ambient temperature does not reach the user's set temperature, the operating power of the photovoltaic air conditioning unit is increased. During the process of increasing the operating power of the photovoltaic air conditioning unit, the operating power and the number of faults before each fault shutdown are recorded. Based on the recorded operating power and the number of faults, the operating power of the photovoltaic air conditioning unit is dynamically controlled.
[0037] Specifically, when the continuous operating time of the photovoltaic air conditioning unit reaches the target duration corresponding to the latest fault shutdown, it can detect whether the indoor ambient temperature has reached the user-set temperature. If the indoor ambient temperature reaches the user-set temperature, the photovoltaic air conditioning unit can continue to operate at the target operating power corresponding to the latest fault shutdown. If the indoor ambient temperature does not reach the user-set temperature, the operating power of the photovoltaic air conditioning unit can be increased. During the process of increasing the operating power of the photovoltaic air conditioning unit, the operating power and the number of faults before each fault shutdown are recorded. Based on the recorded operating power and the number of faults, the operating power of the photovoltaic air conditioning unit is dynamically controlled.
[0038] This allows the cooling or heating capacity of the photovoltaic air conditioning unit to meet user requirements as much as possible, thereby improving the user experience.
[0039] In an optional embodiment, after step S101 above, which involves obtaining the grid connection / off-grid status of the photovoltaic air conditioning unit and the ambient light conditions, the method further includes: When the photovoltaic air conditioning unit is off-grid and there is sufficient sunlight, it operates using the energy provided by the photovoltaic modules in the photovoltaic air conditioning unit.
[0040] Specifically, after obtaining the grid-connected / off-grid status of the photovoltaic air conditioning unit and the ambient light conditions, if the photovoltaic air conditioning unit is in an off-grid state and there is sufficient sunlight, it can operate using the energy provided by the photovoltaic modules within the unit. Thus, even when the mains power supply stops, the photovoltaic air conditioning unit can still operate using the energy provided by the photovoltaic modules.
[0041] In an optional embodiment, after step S101 above, which involves obtaining the grid connection / off-grid status of the photovoltaic air conditioning unit and the ambient light conditions, the method further includes: When the photovoltaic air conditioning unit is connected to the grid and there is sufficient sunlight, the energy provided by the photovoltaic modules in the photovoltaic air conditioning unit will be used first for operation.
[0042] Specifically, after obtaining the grid-connected / off-grid status of the photovoltaic air conditioning unit and the ambient light conditions, if the photovoltaic air conditioning unit is in grid-connected mode and there is sufficient sunlight, the energy provided by the photovoltaic modules in the photovoltaic air conditioning unit can be used preferentially for operation. This can reduce the power consumption of the photovoltaic air conditioning unit and achieve energy conservation.
[0043] In an optional embodiment, after step S101 above, which involves obtaining the grid connection / off-grid status of the photovoltaic air conditioning unit and the ambient light conditions, the method further includes: When the photovoltaic air conditioning unit is connected to the grid and there is insufficient sunlight, it will prioritize the use of energy provided by the mains power supply for operation.
[0044] Specifically, after obtaining the grid-connected / off-grid status of the photovoltaic air conditioning unit and the ambient light conditions, if the photovoltaic air conditioning unit is in grid-connected mode but sunlight is insufficient, it can prioritize using the energy provided by the mains power supply. This ensures the stability of the photovoltaic air conditioning unit's operation and thus improves the user experience.
[0045] In an optional embodiment, the photovoltaic air conditioning unit control process provided in this application can be as follows: Figure 2 As shown, it can specifically include the following steps: Step S201: Power on and start the photovoltaic air conditioning unit.
[0046] The photovoltaic air conditioning unit may include photovoltaic modules and an air conditioning unit, and may or may not be connected to the power grid.
[0047] Step S202: Determine whether the photovoltaic air conditioning unit is in grid-connected status.
[0048] After the photovoltaic air conditioning unit is powered on and started, the grid interface can be detected to determine whether the photovoltaic air conditioning unit is in grid-connected state (with mains power) or off-grid state (without mains power). If the photovoltaic air conditioning unit is in grid-connected state, step S203 is executed; if the photovoltaic air conditioning unit is in off-grid state, step S207 is executed.
[0049] Step S203: Control the photovoltaic air conditioning unit to continuously operate at the target operating power corresponding to the user-set temperature; Step S204: Determine whether the sunlight in the environment where the photovoltaic air conditioning unit is located is sufficient.
[0050] If the environment where the photovoltaic air conditioning unit is located has sufficient sunlight, then proceed to step S205; if the environment where the photovoltaic air conditioning unit is located does not have sufficient sunlight, then proceed to step S206. Step S205: Photovoltaic power supply.
[0051] Step S206: Supplement power supply from the mains.
[0052] When the photovoltaic (PV) air conditioning unit is connected to the grid, its operating power can be controlled by the user-set temperature, prioritizing PV power supply; in this case, PV power generation is unrestricted. When PV power is insufficient, the power required by the PV air conditioning unit is supplied by the mains power grid.
[0053] Step S207: Control the photovoltaic air conditioning unit to continuously operate at the target operating power corresponding to the user-set temperature.
[0054] When the photovoltaic (PV) air conditioning unit is in off-grid mode, its operating power can be controlled by the user-set temperature. Since only PV power is supplied at this time, insufficient PV power may occur during the compressor's frequency upscaling process.
[0055] Step S208: Determine whether the sunlight in the environment where the photovoltaic air conditioning unit is located is sufficient.
[0056] If the environment where the photovoltaic air conditioning unit is located has sufficient sunlight, then proceed to step S209; if the environment where the photovoltaic air conditioning unit is located does not have sufficient sunlight, then proceed to step S210. Step S209: Photovoltaic power supply.
[0057] Step S210: Record the maximum operating power and the number of failures N before the failure shutdown, and determine the new target operating power. The new target operating power is equal to the maximum operating power before the last failure shutdown - 100W.
[0058] Step S211: Restart the operation to the new target operating power and maintain the current power for N*a minutes.
[0059] When the ambient light around the photovoltaic (PV) air conditioning unit is insufficient, the unit will malfunction and shut down, then restart. Before shutting down, the PV air conditioning unit records its maximum operating power P at the moment before the malfunction. fault The number of times the fault occurred, N. After the fault is recovered, the photovoltaic air conditioning unit will not require control and will resume operation according to the previous control mode (cooling / heating, user-set temperature) based on memory, until the photovoltaic air conditioning unit reaches the maximum operating power P at the moment before the last fault. fault -100W, and maintain for N*a minutes (the maintenance time can be adjusted according to different regions and climates. In areas with good sunshine conditions, a can be shortened appropriately, and in areas with insufficient sunshine conditions, a can be extended appropriately).
[0060] Step S212: Determine whether the indoor ambient temperature has reached the user-set temperature.
[0061] If the unit does not shut down due to insufficient photovoltaic energy within N*a minutes, it checks whether the indoor temperature has reached the user-set target temperature. If it has, it maintains the current operating state. If it has not, the unit adjusts the compressor target frequency and attempts to increase the unit's operating power to provide greater cooling capacity to the user. If the indoor ambient temperature reaches the user-set temperature, step S213 is executed; if the indoor ambient temperature does not reach the user-set temperature, it returns to step S210 to increase the photovoltaic air conditioning unit's operating power to provide greater cooling capacity to the user.
[0062] Step S213: Maintain the current operating power and continue operation.
[0063] In this way, photovoltaic air conditioning units can be used without the need for energy storage batteries, reducing user operating costs. Furthermore, when sunlight conditions are insufficient, the photovoltaic air conditioning units will experience multiple shutdowns, extending their operating time before a potential failure. This allows them to smoothly navigate periods of insufficient sunlight or weather-related photovoltaic power generation, reducing the number of shutdowns and ensuring the reliability and lifespan of the photovoltaic air conditioning units.
[0064] See Figure 3 , Figure 3 This is a schematic diagram of the structure of a photovoltaic air conditioning unit control device provided in an embodiment of this application, as shown below. Figure 3 As shown, the photovoltaic air conditioning unit control device 300 includes: The acquisition module 301 is used to acquire the grid connection and off-grid status of the photovoltaic air conditioning unit and the light conditions of the environment. The first control module 302 is used to record the operating power and number of failures of the photovoltaic air conditioning unit before each failure shutdown when the photovoltaic air conditioning unit is in an off-grid state and the sunlight is insufficient, and to dynamically control the operating power of the photovoltaic air conditioning unit based on the recorded operating power and number of failures each time.
[0065] Furthermore, the first control module 302 includes: The first recording submodule is used to record the operating power and number of faults of the photovoltaic air conditioning unit before the i-th fault shutdown, where i is an integer greater than or equal to 1; The first determining submodule is used to determine the target operating power and target duration based on the operating power and number of faults of the photovoltaic air conditioning unit before the i-th fault shutdown and in the case of restarting the unit after the i-th fault shutdown. The first control submodule is used to control the photovoltaic air conditioning unit to run continuously according to the target operating power, and to determine whether the continuous running time of the photovoltaic air conditioning unit has reached the target duration. The second recording submodule is used to record the operating power and number of faults of the photovoltaic air conditioning unit before the (i+1)th fault shutdown if the continuous running time of the photovoltaic air conditioning unit does not reach the target time. The second determining submodule is used to redetermine the new target operating power and the new target duration based on the operating power and number of faults of the photovoltaic air conditioning unit before the (i+1)th fault shutdown when restarting it. The second control submodule is used to control the photovoltaic air conditioning unit to run continuously according to the new target operating power, and to determine whether the continuous operating time of the photovoltaic air conditioning unit has reached the new target time. This process is repeated until the continuous operating time of the photovoltaic air conditioning unit reaches the target time corresponding to the latest fault shutdown.
[0066] Furthermore, the first determining submodule includes: The first determining unit is used to calculate the difference between the operating power of the photovoltaic air conditioning unit before the i-th fault shutdown and the preset power threshold, and to determine the difference as the target operating power, wherein the preset power threshold is less than the operating power of the photovoltaic air conditioning unit before the i-th fault shutdown; The second determining unit is used to calculate the product between the number of failures of the photovoltaic air conditioning unit before the i-th failure shutdown and the preset coefficient, and to determine the product as the target duration. The preset coefficient can be adjusted according to the region where the photovoltaic air conditioning unit is located and / or the climate conditions of the environment where the photovoltaic air conditioning unit is located.
[0067] Furthermore, the photovoltaic air conditioning unit control device 300 also includes: The detection module is used to detect whether the indoor ambient temperature has reached the user-set temperature when the continuous operation time of the photovoltaic air conditioning unit reaches the target time corresponding to the latest fault shutdown. The second control module is used to continue controlling the photovoltaic air conditioning unit to operate at the target operating power corresponding to the latest fault shutdown when the indoor ambient temperature reaches the user-set temperature. The third control module is used to increase the operating power of the photovoltaic air conditioning unit when the indoor ambient temperature does not reach the user-set temperature. During the process of increasing the operating power of the photovoltaic air conditioning unit, it records the operating power and the number of faults before each fault shutdown, and dynamically controls the operating power of the photovoltaic air conditioning unit based on the recorded operating power and the number of faults.
[0068] Furthermore, the photovoltaic air conditioning unit control device 300 also includes: The first operating module is used to operate the photovoltaic air conditioning unit by utilizing the energy provided by the photovoltaic modules in the photovoltaic air conditioning unit when the unit is off-grid and there is sufficient sunlight.
[0069] Furthermore, the photovoltaic air conditioning unit control device 300 also includes: The second operating module is used to prioritize the use of energy provided by the photovoltaic modules in the photovoltaic air conditioning unit when the photovoltaic air conditioning unit is in grid-connected state and there is sufficient sunlight.
[0070] Furthermore, the photovoltaic air conditioning unit control device 300 also includes: The third operation module is used to prioritize the use of energy provided by the mains power supply when the photovoltaic air conditioning unit is in grid-connected state and sunlight is insufficient.
[0071] It should be noted that the photovoltaic air conditioning unit control device 300 can realize the photovoltaic air conditioning unit control method provided in any of the aforementioned method embodiments and can achieve the same technical effect, which will not be elaborated here.
[0072] like Figure 4 As shown in the illustration, this application also provides a photovoltaic air conditioning unit, including a processor 411, a communication interface 412, a memory 413, and a communication bus 414, wherein the processor 411, the communication interface 412, and the memory 413 communicate with each other through the communication bus 414. Memory 413 is used to store computer programs; In one embodiment of this application, the processor 411, when executing the program stored in the memory 413, implements the photovoltaic air conditioning unit control method provided in any of the foregoing method embodiments.
[0073] The photovoltaic air conditioning unit includes photovoltaic modules 511 and an air conditioning unit. The air conditioning unit includes an outdoor unit 512 and an indoor unit 513. The outdoor unit 512 includes a DC-to-DC module 5121, an AC-to-DC module 5122, a DC bus, and an outdoor unit control module 5123. The photovoltaic module 511 can be connected to the outdoor unit control module 5123 via the DC-to-DC module 5121 and the DC bus. Mains power 514 can be connected to the outdoor unit control module 5123 via the AC-to-DC module 5122 and the DC bus. Figure 5 As shown. In one embodiment of this application, the outdoor unit control module 5123 is used to implement the photovoltaic air conditioning unit control method provided in any of the foregoing method embodiments.
[0074] In addition, this application embodiment also provides a computer-readable storage medium storing a computer program thereon, which, when executed by a processor, implements the photovoltaic air conditioning unit control method as provided in the foregoing method embodiments.
[0075] The device embodiments described above are merely illustrative. The units described as separate components may or may not be physically separate, and the components shown as units may or may not be physical units; that is, they may be located in one place or distributed across network units. Some or all of the modules can be selected to achieve the purpose of this embodiment according to actual needs.
[0076] Through the above description of the embodiments, those skilled in the art can clearly understand that each embodiment can be implemented using software plus a general-purpose hardware platform, or of course, using hardware. Based on this understanding, the above technical solutions, in essence or the parts that contribute to the related technology, can be embodied in the form of a software product. This computer software product can be stored in a computer-readable storage medium, such as ROM / RAM, magnetic disk, optical disk, etc., and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute the methods described in the various embodiments or some parts of the embodiments.
[0077] It should be understood that the terminology used herein is for the purpose of describing particular exemplary embodiments only and is not intended to be limiting. Unless the context clearly indicates otherwise, the singular forms “a,” “an,” and “described” as used herein may also mean including the plural forms. The terms “comprising,” “including,” “containing,” and “having” are inclusive and therefore indicate the presence of the stated features, steps, operations, elements, and / or components, but do not exclude the presence or addition of one or more other features, steps, operations, elements, components, and / or combinations thereof. The method steps, processes, and operations described herein are not construed as requiring them to be performed in a particular order described or illustrated unless the order of performance is explicitly indicated. It should also be understood that additional or alternative steps may be used.
[0078] The above description is merely a specific embodiment of this application, enabling those skilled in the art to understand or implement this application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this application. Therefore, this application is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features claimed herein.
Claims
1. A photovoltaic air conditioning unit control method, characterized by, The method includes: Obtain the grid-connected and off-grid status of the photovoltaic air conditioning unit and the light conditions of its environment; When the photovoltaic air conditioning unit is in an off-grid state and the sunlight is insufficient, the operating power and number of failures of the photovoltaic air conditioning unit before each failure shutdown are recorded, and the operating power of the photovoltaic air conditioning unit is dynamically controlled based on the recorded operating power and number of failures each time.
2. The method of claim 1, wherein, The process of recording the operating power and number of faults of the photovoltaic air conditioning unit before each fault shutdown, and dynamically controlling the operating power of the photovoltaic air conditioning unit based on the recorded operating power and number of faults, includes: Record the operating power and number of faults of the photovoltaic air conditioning unit before the i-th fault shutdown, where i is an integer greater than or equal to 1; In the case of restarting the photovoltaic air conditioning unit after the i-th failure shutdown, the target operating power and target duration are determined based on the operating power and number of failures of the photovoltaic air conditioning unit before the i-th failure shutdown. The photovoltaic air conditioning unit is controlled to operate continuously at the target operating power, and it is determined whether the continuous operating time of the photovoltaic air conditioning unit has reached the target duration; If the continuous operating time of the photovoltaic air conditioning unit does not reach the target duration, record the operating power and number of faults of the photovoltaic air conditioning unit before the (i+1)th fault shutdown. In the case of restarting the photovoltaic air conditioning unit after the (i+1)th failure shutdown, the new target operating power and the new target duration are determined based on the operating power and number of failures of the photovoltaic air conditioning unit before the (i+1)th failure shutdown. The photovoltaic air conditioning unit is controlled to operate continuously at the new target operating power, and it is determined whether the continuous operating time of the photovoltaic air conditioning unit has reached the new target time. This process is repeated until the continuous operating time of the photovoltaic air conditioning unit reaches the target time corresponding to the latest fault shutdown.
3. The method of claim 1, wherein, The determination of the target operating power and target duration based on the operating power and number of faults of the photovoltaic air conditioning unit before the i-th fault shutdown includes: Calculate the difference between the operating power of the photovoltaic air conditioning unit before the i-th failure shutdown and the preset power threshold, and determine the difference as the target operating power, wherein the preset power threshold is less than the operating power of the photovoltaic air conditioning unit before the i-th failure shutdown; Calculate the product between the number of failures of the photovoltaic air conditioning unit before the i-th failure shutdown and a preset coefficient, and determine the product as the target duration. The preset coefficient can be adjusted according to the climate conditions of the region where the photovoltaic air conditioning unit is located and / or the environment in which the photovoltaic air conditioning unit is located.
4. The method of claim 2, wherein, The method further includes: When the continuous operating time of the photovoltaic air conditioning unit reaches the target duration corresponding to the latest fault shutdown, detect whether the indoor ambient temperature reaches the user-set temperature. When the indoor ambient temperature reaches the user-set temperature, the photovoltaic air conditioning unit continues to operate at the target operating power corresponding to the latest fault shutdown. If the indoor environment temperature does not reach the user set temperature, the operating power of the photovoltaic air conditioning unit is increased, and the operating power before each failure shutdown and the number of failures are recorded during the increase of the operating power of the photovoltaic air conditioning unit, and the operating power of the photovoltaic air conditioning unit is dynamically controlled based on the recorded operating power and the number of failures each time.
5. The method of claim 1, wherein, After the on-grid and off-grid states of the photovoltaic air conditioning unit and the illumination conditions of the environment are obtained, the method further comprises: If the photovoltaic air conditioning unit is in an off-grid state and the illumination is sufficient, the photovoltaic air conditioning unit is operated by using the energy provided by the photovoltaic components in the photovoltaic air conditioning unit.
6. The method of claim 1, wherein, After the on-grid and off-grid states of the photovoltaic air conditioning unit and the illumination conditions of the environment are obtained, the method further comprises: If the photovoltaic air conditioning unit is in an on-grid state and the illumination is sufficient, the photovoltaic air conditioning unit is operated by preferentially using the energy provided by the photovoltaic components in the photovoltaic air conditioning unit.
7. The method of claim 1, wherein, After the on-grid and off-grid states of the photovoltaic air conditioning unit and the illumination conditions of the environment are obtained, the method further comprises: If the photovoltaic air conditioning unit is in an on-grid state and the illumination is insufficient, the photovoltaic air conditioning unit is operated by preferentially using the energy provided by the power supply.
8. A photovoltaic air conditioning unit control device, characterized by, The device comprises: An acquisition module is configured to acquire the on-grid and off-grid states of the photovoltaic air conditioning unit and the illumination conditions of the environment. A first control module is configured to record the operating power before each failure shutdown and the number of failures of the photovoltaic air conditioning unit if the photovoltaic air conditioning unit is in an off-grid state and the illumination is insufficient, and to dynamically control the operating power of the photovoltaic air conditioning unit based on the recorded operating power and the number of failures each time.
9. A photovoltaic air conditioning unit, characterized by, The device comprises a processor, a communication interface, a memory and a communication bus, wherein the processor, the communication interface and the memory complete mutual communication through the communication bus. The memory is configured to store a computer program. The processor is configured to execute the program stored on the memory to implement the photovoltaic air conditioning unit control method in any one of claims 1-7.
10. A computer-readable storage medium having stored thereon a computer program, characterized in that, The computer program is executed by the processor to implement the photovoltaic air conditioning unit control method in any one of claims 1-7.