Control method and device of photovoltaic air conditioner, photovoltaic air conditioner and storage medium

Abstract

This invention discloses a control method, device, photovoltaic air conditioner, and storage medium for a photovoltaic air conditioner. The method includes: if the power supply mode of the photovoltaic air conditioner is detected to be photovoltaic power supply mode, controlling the indoor fan module of the photovoltaic air conditioner to start and gradually increasing the first real-time speed of the indoor fan module until the first real-time speed reaches a first target speed; if the first real-time speed reaches the first target speed, controlling the outdoor fan module of the photovoltaic air conditioner to start and gradually increasing the second real-time speed of the outdoor fan module until the second real-time speed reaches a second target speed; if the second real-time speed reaches the second target speed, controlling the compressor module of the photovoltaic air conditioner to start and gradually increasing the third real-time speed of the compressor module until the third real-time speed reaches a third target speed, thereby starting the photovoltaic air conditioner in stages. This invention can improve the stability of the photovoltaic air conditioner and the user experience.

Description

Technical Field

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

[0002] Photovoltaic air conditioners typically offer multiple power supply modes, such as photovoltaic (PV) power, grid power, and a hybrid of both. In PV power mode, solar panels convert solar energy into electricity to power the air conditioner, allowing it to operate independently of grid power and saving users on electricity bills. However, PV power supply is limited by environmental factors. On cloudy days or in situations with insufficient sunlight, such as early morning or late afternoon, PV air conditioners may experience frequent on / off cycles, reducing the user experience. Summary of the Invention

[0003] This invention provides a control method, device, photovoltaic air conditioner, and storage medium for a photovoltaic air conditioner, aiming to solve the problem of frequent start-up and shutdown of current photovoltaic air conditioners.

[0004] In a first aspect, embodiments of the present invention provide a control method for a photovoltaic air conditioner, applied to a photovoltaic air conditioner, the method comprising:

[0005] If the power supply mode of the photovoltaic air conditioner is detected to be photovoltaic power supply mode, the internal fan module of the photovoltaic air conditioner is controlled to start and the first real-time speed of the internal fan module is increased stepwise until the first real-time speed reaches the first target speed.

[0006] If the first real-time speed reaches the first target speed, then control the outdoor fan module of the photovoltaic air conditioner to start and increase the second real-time speed of the outdoor fan module stepwise until the second real-time speed reaches the second target speed;

[0007] If the second real-time speed reaches the second target speed, the compressor module is started to start the photovoltaic air conditioner.

[0008] Secondly, embodiments of the present invention also provide a control device for a photovoltaic air conditioner, the device comprising:

[0009] The first speed control unit is used to control the internal fan module of the photovoltaic air conditioner to start and increase the first real-time speed of the internal fan module in a stepwise manner until the first real-time speed reaches the first target speed if the power supply mode of the photovoltaic air conditioner is detected to be photovoltaic power supply mode.

[0010] The second speed control unit is used to control the outdoor fan module of the photovoltaic air conditioner to start and increase the second real-time speed of the outdoor fan module in a stepwise manner until the second real-time speed reaches the second target speed if the first real-time speed reaches the first target speed.

[0011] The first starting unit is used to start the compressor module to start the photovoltaic air conditioner if the second real-time speed reaches the second target speed.

[0012] Thirdly, embodiments of the present invention also provide a photovoltaic air conditioner, which includes a memory and a processor connected to the memory. The memory stores a computer program, and the processor executes the computer program to implement the above-described method.

[0013] Fourthly, embodiments of the present invention also provide a computer-readable storage medium storing a computer program that, when executed by a processor, can implement the above-described method.

[0014] This invention provides a control method, device, and storage medium for a photovoltaic air conditioner. The method includes: if the power supply mode of the photovoltaic air conditioner is detected to be photovoltaic power supply mode, then controlling the indoor fan module of the photovoltaic air conditioner to start and progressively increasing the first real-time speed of the indoor fan module until the first real-time speed reaches a first target speed; if the first real-time speed reaches the first target speed, then controlling the outdoor fan module of the photovoltaic air conditioner to start and progressively increasing the second real-time speed of the outdoor fan module until the second real-time speed reaches a second target speed; if the second real-time speed reaches the second target speed, then starting the compressor module to start the photovoltaic air conditioner. In this embodiment of the invention, when the photovoltaic air conditioner is in photovoltaic power supply mode, the internal fan module is first started, and the first real-time speed of the internal fan module is increased in stages until the first real-time speed reaches the first target speed. Then, the external fan module is started, and the second real-time speed of the external fan module is increased in stages until the second real-time speed reaches the second target speed. Finally, the compressor module is started, and the third real-time speed of the compressor module is increased in stages until the third real-time speed reaches the third target speed. Under the step-by-step increase of real-time speed, the photovoltaic air conditioner also starts in stages, and the required power gradually increases. This allows the operating power of the photovoltaic air conditioner to match the output power of the photovoltaic panel, avoiding frequent start-up and shutdown, improving the stability of the photovoltaic air conditioner and the user experience. Attached Figure Description

[0015] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the following description of the embodiments will be briefly introduced. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic flowchart of the control method for a photovoltaic air conditioner provided in an embodiment of the present invention;

[0017] Figure 2 This is a schematic diagram of the first sub-process of the photovoltaic air conditioner control method provided in an embodiment of the present invention;

[0018] Figure 3 This is a schematic diagram of the second sub-process of the photovoltaic air conditioner control method provided in the embodiment of the present invention;

[0019] Figure 4 This is a schematic diagram of the third sub-process of the photovoltaic air conditioner control method provided in the embodiment of the present invention;

[0020] Figure 5 This is a schematic diagram of the fourth sub-process of the photovoltaic air conditioner control method provided in the embodiments of the present invention;

[0021] Figure 6 This is a schematic diagram of the fifth sub-process of the photovoltaic air conditioner control method provided in the embodiment of the present invention;

[0022] Figure 7 This is a schematic diagram of the sixth sub-process of the photovoltaic air conditioner control method provided in the embodiments of the present invention;

[0023] Figure 8 This is a logic block diagram of the photovoltaic air conditioner control method provided in the embodiments of the present invention;

[0024] Figure 9 This is a schematic block diagram of a control device for a photovoltaic air conditioner provided in an embodiment of the present invention;

[0025] Figure 10 This is a schematic block diagram of a photovoltaic air conditioner provided in an embodiment of the present invention. Detailed Implementation

[0026] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0027] It should be understood that, when used in this specification and the appended claims, the terms “comprising” and “including” indicate the presence of the described features, integrals, operations, elements and / or components, but do not exclude the presence or addition of one or more other features, integrals, operations, elements, components and / or collections thereof.

[0028] It should also be understood that the terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to limit the invention. As used in this specification and the appended claims, the singular forms “a,” “an,” and “the” are intended to include the plural forms unless the context clearly indicates otherwise. It should also be understood that the term “and / or” as used in this specification and the appended claims refers to any combination and all possible combinations of one or more of the associated listed items, and includes such combinations.

[0029] Please see Figure 1 , Figure 1 This is a flowchart illustrating the control method for a photovoltaic air conditioner provided in an embodiment of the present invention. This control method can be applied to photovoltaic air conditioners. When the photovoltaic air conditioner is operating in photovoltaic power supply mode, the internal fan module, external fan module, and compressor module are started sequentially. The next module is started only after the real-time speed of each module reaches its target speed. Furthermore, the real-time speed of each module is increased in a step-like manner to smoothly meet the power demands of the photovoltaic air conditioner, avoiding frequent start-stop cycles due to environmental changes and improving the stability of the photovoltaic air conditioner. Figure 1 As shown, the method includes steps S100 to S120.

[0030] S100, if the power supply mode of the photovoltaic air conditioner is detected to be photovoltaic power supply mode, then the internal fan module of the photovoltaic air conditioner is controlled to start and the first real-time speed of the internal fan module is increased stepwise until the first real-time speed reaches the first target speed.

[0031] In this embodiment of the invention, the photovoltaic air conditioner may include multiple power supply modes, such as photovoltaic power supply mode, mains power supply mode, energy storage module power supply mode and hybrid power supply mode. Photovoltaic power supply mode refers to power supply by photovoltaic panels alone, mains power supply mode refers to power supply by the power grid, energy storage module power supply mode refers to power supply by energy storage modules, such as lithium batteries, and hybrid power supply mode refers to power supply by combining photovoltaic power supply with one or more other power supply methods, such as photovoltaic power supply and mains power supply, or photovoltaic power supply and energy storage module power supply.

[0032] When the photovoltaic air conditioner is operating on photovoltaic power, a phased and multi-stage strategy is adopted to start it up. That is, the indoor fan module, outdoor fan module, and compressor module are not started simultaneously. Instead, different priorities are set for each module according to the photovoltaic air conditioner's operating mode, and the modules are started according to these priorities. For example, in cooling mode, the indoor fan module has a higher priority than the outdoor fan module, and the outdoor fan module has a higher priority than the compressor module. Therefore, the starting order is: first, the indoor fan module starts; after the indoor fan module has started, the outdoor fan module starts; and finally, the compressor module starts. In heating mode, the outdoor fan module starts first, then the compressor module, and finally the indoor fan module. It is important to understand that the difference between heating and cooling modes lies only in the starting order of different modules; the principle of step-by-step speed regulation during the startup of the same module is the same. The following explanation uses cooling mode as an example; the explanation for heating mode can be found in the cooling mode description.

[0033] In cooling mode, the indoor fan module has the highest priority for startup. Therefore, it can be controlled to start at the lowest speed and gradually increase its initial real-time speed until it reaches the target speed. Let the lowest speed be Vmin and the target speed be Vmax. Multiple stages can be set between Vmin and Vmax, each corresponding to a different speed. For example, three stages can be set between Vmin and Vmax, each with a specific speed: V1, V2, and V3. The initial real-time speed increases from Vmin to V1, then from V1 to V2, then from V2 to V3, and finally from V3 to Vmax. This means the initial real-time speed doesn't increase directly from Vmin to Vmax, preventing the photovoltaic air conditioner from operating at a high power output from the start. A condition can be set for each stage. The speed increase continues only when the condition is met; otherwise, the speed is reduced or the indoor fan module is shut down. This condition is related to the output power of the photovoltaic air conditioner, such as photovoltaic voltage or current.

[0034] In some embodiments, such as in embodiments of the present invention, as Figure 2 As shown, step 100 includes steps S101-S104.

[0035] S101, control the internal fan module to start at the lowest speed and gradually increase the first real-time speed until the first real-time speed reaches the first sub-target speed;

[0036] S102, maintain the first real-time rotation speed consistent with the first sub-target rotation speed, and confirm whether the first rate of increase of the first real-time rotation speed is the same as the preset reference speed regulation rate, and confirm whether the photovoltaic voltage of the photovoltaic air conditioner is the same as the starting voltage.

[0037] S103, if the first rate of increase is the same as the preset reference speed regulation rate, and the photovoltaic voltage is not less than the starting voltage, then continue to increase the first real-time speed until the first real-time speed reaches the second sub-target speed.

[0038] S104, if the first rate of increase is the same as the preset reference speed regulation rate, and the photovoltaic voltage is not less than the starting voltage, then continue to increase the first real-time speed until the first real-time speed reaches the first target speed.

[0039] In this embodiment of the invention, multiple stages can be set between the minimum rotational speed and the first target rotational speed. Different stages correspond to different stage speeds, and the number of stages can be determined by environmental factors such as the location of the photovoltaic air conditioner and the lighting conditions. Taking the setting of two steps between the minimum rotational speed and the first target rotational speed as an example, each step corresponds to a step speed, namely the first sub-target rotational speed and the second sub-target rotational speed.

[0040] When the internal fan module accelerates from its lowest speed setting, it first increases the speed to the first sub-target speed. While maintaining this speed, the first rate of increase and the current output voltage of the photovoltaic air conditioner (PV air conditioner), i.e., the PV voltage, are obtained. The first rate of increase is the average rate at which the first real-time speed increases from its lowest setting to the first sub-target speed. The preset reference speed regulation rate is the rate at which the first real-time speed accelerates when the PV power supply is sufficient. The starting voltage is the output voltage of the PV panel before the PV air conditioner starts, and the PV voltage is the current output voltage of the PV panel.

[0041] By comparing the first rate of increase with the preset reference speed regulation rate, and by comparing the photovoltaic voltage with the starting voltage, it can be determined whether the internal fan module can continue to increase its speed. In other words, the first rate of increase and the photovoltaic voltage can be used as conditions for determining speed increase. When the first rate of increase is the same as the preset reference speed regulation rate, and the photovoltaic voltage is not less than the starting voltage, the conditions for speed increase are met, and speed can continue to increase. It is understood that the first rate of increase and the preset reference speed regulation rate do not need to be exactly the same; a certain range of error is allowed.

[0042] Once the acceleration conditions are met, continue to increase the first real-time speed until it reaches the second sub-target speed. After the first real-time speed reaches the second sub-target speed, continue to check whether the acceleration conditions are met. If they are met, the first real-time speed can be increased to the first target speed. If not, the speed needs to be reduced.

[0043] For example, the first sub-target speed can be 500 rpm, the second sub-target speed can be 800 rpm, the first target speed can be 1200 rpm, the preset reference speed regulation rate can be 100 rpm / s, and the starting voltage can be 240V. If the first real-time speed increases to the first sub-target speed at a rate close to 100 rpm / s and the photovoltaic voltage is not less than 240V, then the first real-time speed can be increased from 500 rpm to 800 rpm. If the first rate of increase is still close to 100 rpm / s and the photovoltaic voltage is not less than 240V, then the first real-time speed can be increased from 800 rpm to 1200 rpm, thus completing the speed increase of the internal fan module.

[0044] In some embodiments, such as in embodiments of the present invention, as Figure 3 As shown, step 100 includes step S105.

[0045] S105, when the internal fan module is in the first stage, if the first rate of increase is the same as the preset reference speed regulation rate, and the photovoltaic voltage is less than the starting voltage, then the internal fan module is turned off to allow the photovoltaic air conditioner to enter standby mode, wherein the first stage is the interval in which the first real-time speed reaches the first sub-target speed.

[0046] In this embodiment of the invention, the step speed corresponding to the first stage is the first sub-target speed. If the first rate of increase is the same as the preset reference speed regulation rate in the first stage, but the photovoltaic voltage is less than the starting voltage, it indicates that the output power of the photovoltaic panel is low and cannot support the minimum load of the photovoltaic air conditioner. The internal fan module can be directly turned off, and then the photovoltaic air conditioner can be controlled to enter the standby state.

[0047] In some embodiments, such as in embodiments of the present invention, as Figure 4 As shown, step 100 includes step S106.

[0048] S106, when the internal fan module is in the second stage, if the first rising rate is the same as the preset reference speed regulation rate, the photovoltaic voltage is less than the starting voltage, and the difference between the photovoltaic voltage and the starting voltage increases, then the first real-time speed is reduced to reduce the first real-time speed to the first sub-target speed, wherein the second stage is the interval in which the first real-time speed reaches the second sub-target speed.

[0049] In this embodiment of the invention, the step speed corresponding to the second stage is the second sub-target speed. When the first real-time speed is in the second stage, if the first rate of increase is the same as the preset reference speed regulation rate, but the photovoltaic voltage is less than the starting voltage, and the difference between the photovoltaic voltage and the starting voltage increases, that is, the photovoltaic voltage continues to decrease, then the first real-time speed can be reduced until the first real-time speed is the same as the first sub-target speed. Then, the first real-time speed is maintained at the first sub-target speed, that is, the first real-time speed is returned from the second stage to the first stage. When the first real-time speed returns to the first stage, it can still be determined whether the speed-up condition is met. If the speed-up condition is met, the first real-time speed is increased again.

[0050] In some embodiments, such as in embodiments of the present invention, as Figure 5 As shown, step 100 includes steps S107-S109a.

[0051] S107, when the internal fan module is in the second stage, if the first rising rate is less than the preset reference speed regulation rate, the photovoltaic voltage is less than the starting voltage, and the difference between the photovoltaic voltage and the starting voltage increases, then the first real-time speed is reduced.

[0052] S108, if the difference no longer increases and the first real-time rotational speed is less than the first sub-target rotational speed, then the internal fan module is turned off;

[0053] S109, if the difference no longer increases, and the first real-time rotational speed is greater than or equal to the first sub-target rotational speed, then maintain the current rotational speed.

[0054] S109a, if the difference continues to increase, then the internal fan module is shut down.

[0055] In this embodiment of the invention, when the first real-time rotational speed is in the second stage, the first rate of increase is less than the preset reference speed regulation rate, the photovoltaic voltage is less than the start-up voltage, and the photovoltaic voltage continues to decrease, the first real-time rotational speed can be sequentially reduced until the photovoltaic voltage no longer decreases. When the first rate of increase is less than the preset reference speed regulation rate and the photovoltaic voltage continues to decrease, it indicates that the output power of the photovoltaic panel may be reduced due to problems such as sunlight, making it unable to maintain high-power operation. In this case, the first real-time rotational speed can be reduced to match the photovoltaic voltage.

[0056] When the first real-time speed decreases, if the difference between the photovoltaic voltage and the starting voltage no longer increases before falling below the first sub-target speed, the first real-time speed can be maintained at that speed. If the first real-time speed decreases to below the first sub-target speed, the internal fan module will be directly shut down regardless of whether the difference between the photovoltaic voltage and the starting voltage continues to increase. If the difference between the photovoltaic voltage and the starting voltage continues to increase for a certain period of time, the internal fan module can be directly shut down regardless of whether the first real-time speed is below the first sub-target speed.

[0057] S110, if the first real-time speed reaches the first target speed, then control the outdoor fan module of the photovoltaic air conditioner to start and increase the second real-time speed of the outdoor fan module in a stepwise manner until the second real-time speed reaches the second target speed.

[0058] In this embodiment of the invention, the external fan module is only started after the first real-time speed of the internal fan module reaches the first target speed, and the second real-time speed of the external fan module is increased in a step-by-step manner until the second real-time speed reaches the second target speed. The step-by-step strategy for the external fan module is the same as that for the internal fan module; the following is only a flowchart for reference, and a detailed explanation can be found in the description of the internal fan module.

[0059] The external fan module is controlled to start at the lowest speed and gradually increase the second real-time speed until the second real-time speed reaches the third sub-target speed.

[0060] The second real-time speed is kept consistent with the third sub-target speed, and it is confirmed whether the second rate of increase of the second real-time speed is the same as the preset reference speed regulation rate, and whether the photovoltaic voltage of the photovoltaic air conditioner is the same as the starting voltage.

[0061] If the second rate of increase is the same as the preset reference speed regulation rate, and the photovoltaic voltage is not less than the starting voltage, then the second real-time speed continues to increase until the second real-time speed reaches the fourth sub-target speed.

[0062] If the second rate of increase is the same as the preset reference speed regulation rate, and the photovoltaic voltage is not less than the starting voltage, then the second real-time speed continues to increase until the second real-time speed reaches the second target speed;

[0063] When the external fan module is in the first stage, if the second rate of increase is the same as the preset reference speed regulation rate, and the photovoltaic voltage is less than the starting voltage, then the external fan module is turned off to allow the photovoltaic air conditioner to enter standby mode. The first stage is when the second real-time speed reaches the third sub-target speed.

[0064] When the external fan module is in the second stage, if the second rate of increase is the same as the preset reference speed regulation rate, the photovoltaic voltage is less than the starting voltage, and the difference between the photovoltaic voltage and the starting voltage increases, then the second real-time speed is reduced to reduce the second real-time speed to the third sub-target speed, wherein the second stage is when the second real-time speed reaches the fourth sub-target speed;

[0065] When the external fan module is in the second stage, if the second rate of increase is less than the preset reference speed regulation rate, the photovoltaic voltage is less than the starting voltage, and the difference between the photovoltaic voltage and the starting voltage increases, then the second real-time speed is reduced until the difference no longer increases or the second real-time speed is less than the third sub-target speed.

[0066] If the difference no longer increases, and the second real-time rotational speed is less than the third sub-target rotational speed, then the external fan module is turned off.

[0067] If the second real-time rotational speed is greater than or equal to the third sub-target rotational speed, then the current rotational speed is maintained.

[0068] S120, if the second real-time speed reaches the second target speed, then control the compressor module of the photovoltaic air conditioner to start and increase the third real-time speed of the compressor module stepwise until the third real-time speed reaches the third target speed to start the photovoltaic air conditioner in stages.

[0069] In this embodiment of the invention, once both the internal fan module and the external fan module reach their respective target speeds, the compressor module is started. The third real-time speed of the compressor module is then increased using a stepped strategy until it reaches the third target speed, thus achieving phased startup of the photovoltaic air conditioner. This allows the operating power of the photovoltaic air conditioner to match the output power of the photovoltaic panels. The stepped strategy for the compressor module can be referenced from the stepped strategies for the internal and external fan modules, and will not be elaborated further.

[0070] like Figure 8 As shown, Figure 8 A logic block diagram of the tiered strategy for the internal fan module is provided. Figure 8 The internal fan module consists of three stages, each corresponding to a step speed. When the first real-time speed reaches the step speed of each stage, a speed-up condition is checked. If the speed-up condition is met, the speed is increased to the next stage; otherwise, the speed is reduced or the internal fan module is shut down. Figure 8 In this context, V represents the first rate of ascent, V1 represents the preset reference speed regulation rate, and Vs represents the starting voltage.

[0071] In some embodiments, such as in embodiments of the present invention, as Figure 6 As shown, the method includes steps S130-S132.

[0072] S130, if the first real-time rotational speed or the second real-time rotational speed is running stably at a non-target rotational speed state, then the photovoltaic voltage at the non-target rotational speed state is obtained to obtain the first voltage;

[0073] S131, if the first voltage is detected to increase and the voltage is stable at the second voltage, then confirm whether the second voltage is greater than the start-up voltage;

[0074] S132, if the second voltage is greater than the starting voltage, then increase the first real-time rotational speed.

[0075] In this embodiment of the invention, non-target speed refers to speeds other than the stage speeds set at different stages and the final target speed. For example, the first sub-target speed, the second sub-target speed, and the first target speed are all target speeds, and any speeds between these three can be considered non-target speeds. When the first real-time speed is maintained at a non-target speed, a first voltage can be obtained using the corresponding photovoltaic voltage. When the first voltage increases to a second voltage, and the second voltage is greater than the starting voltage, the first real-time speed can be increased.

[0076] For example, if the first real-time speed is in the second stage, the first boost rate efficiency presets the reference speed regulation rate, the photovoltaic voltage is less than the starting voltage, and the photovoltaic voltage is slowly decreasing. At this time, the first real-time speed begins to decrease. If the first real-time speed decreases to Vx and the photovoltaic voltage no longer decreases, then the photovoltaic voltage corresponding to Vx is the first voltage. If, after a period of time, such as several minutes, the first voltage begins to rise, and if it rises to the second voltage, and the second voltage is greater than the starting voltage, then the speed of the first real-time speed can be further increased to reach the second sub-target speed. It can be understood that the second voltage is any voltage greater than the first voltage, used to indicate that the photovoltaic voltage has begun to rise. In addition, the control logic of the second real-time speed of the external fan module and the third real-time speed of the compressor module when they are at non-target speeds can refer to the control logic of the internal fan module, and will not be elaborated further.

[0077] In some embodiments, such as in embodiments of the present invention, as Figure 7 As shown, the method includes steps S140-S142.

[0078] S140, respectively confirm whether the second real-time speed has reached the second target speed, and whether the compressor module has reached the speed corresponding to its first stage after startup;

[0079] S141, if the second real-time speed does not reach the second target speed, then the external fan module is turned off;

[0080] S142, if the compressor module does not reach the speed corresponding to its first stage after startup, then the external fan module and the compressor module are shut down.

[0081] In this embodiment of the invention, the compressor module is started only when the second real-time speed of the outdoor fan module reaches the second target speed. That is, if the outdoor fan module fails to reach the second target speed for an extended period during the second real-time speed adjustment process, the outdoor fan module can be shut down. Similarly, if the compressor module fails to reach the speed corresponding to its first stage after startup, both the outdoor fan module and the compressor module can be shut down simultaneously.

[0082] The photovoltaic air conditioner control method disclosed in this invention can sequentially start the internal fan module, the external fan module, and the compressor module. Furthermore, a stepped strategy is adopted for the rotation speed of each module to match the output power of the photovoltaic panel, avoiding frequent start-stop situations, thereby improving the stability of the photovoltaic air conditioner and the user experience.

[0083] Figure 9 This is a schematic block diagram of a photovoltaic air conditioner control device 200 provided in an embodiment of the present invention. Figure 9 As shown, corresponding to the above-described control method for photovoltaic air conditioners, the present invention also provides a control device 200 for photovoltaic air conditioners. This control device 200 includes a unit for executing the above-described control method for photovoltaic air conditioners. Specifically, please refer to... Figure 9 The control device 200 of the photovoltaic air conditioner includes a first speed regulation unit 201, a second speed regulation unit 202, and a first start unit 203.

[0084] The first speed control unit 201 is used to control the internal fan module of the photovoltaic air conditioner to start and increase the first real-time speed of the internal fan module in a stepwise manner until the first real-time speed reaches the first target speed if the power supply mode of the photovoltaic air conditioner is detected to be photovoltaic power supply mode.

[0085] The second speed control unit 202 is used to control the outdoor fan module of the photovoltaic air conditioner to start and increase the second real-time speed of the outdoor fan module in a stepwise manner until the second real-time speed reaches the second target speed if the first real-time speed reaches the first target speed.

[0086] The first starting unit 203 is used to start the compressor module to start the photovoltaic air conditioner if the second real-time speed reaches the second target speed.

[0087] In some embodiments, such as this embodiment, the first speed control unit 201 further includes a third speed control unit, a first confirmation unit, a fourth speed control unit, a fifth speed control unit, a first execution unit, a sixth speed control unit, a seventh speed control unit, a second execution unit, and a third execution unit.

[0088] The third speed control unit is used to control the internal fan module to start at the lowest speed and gradually increase the first real-time speed until the first real-time speed reaches the first sub-target speed.

[0089] The first confirmation unit is used to maintain the first real-time rotation speed consistent with the first sub-target rotation speed, and to confirm whether the first rate of increase of the first real-time rotation speed is the same as the preset reference speed regulation rate, and to confirm whether the photovoltaic voltage of the photovoltaic air conditioner is the same as the starting voltage.

[0090] The fourth speed control unit is used to continue increasing the first real-time speed until the first real-time speed reaches the second sub-target speed if the first rate of increase is the same as the preset reference speed control rate and the photovoltaic voltage is not less than the starting voltage.

[0091] The fifth speed control unit is used to continue increasing the first real-time speed until the first real-time speed reaches the first target speed if the first rate of increase is the same as the preset reference speed control rate and the photovoltaic voltage is not less than the starting voltage.

[0092] The first execution unit is configured to, when the internal fan module is in the first stage, if the first rate of increase is the same as the preset reference speed regulation rate and the photovoltaic voltage is less than the starting voltage, shut down the internal fan module to allow the photovoltaic air conditioner to enter a standby state, wherein the first stage is the interval in which the first real-time speed reaches the first sub-target speed.

[0093] The sixth speed control unit is used to reduce the first real-time speed to the first sub-target speed when the internal fan module is in the second stage, if the first rising rate is the same as the preset reference speed control rate, the photovoltaic voltage is less than the starting voltage, and the difference between the photovoltaic voltage and the starting voltage increases. The second stage is the interval in which the first real-time speed reaches the second sub-target speed.

[0094] The seventh speed control unit is used to reduce the first real-time speed when the internal fan module is in the second stage, if the first rising rate is less than the preset reference speed control rate, the photovoltaic voltage is less than the starting voltage, and the difference between the photovoltaic voltage and the starting voltage increases.

[0095] The second execution unit is used to shut down the internal fan module if the first real-time rotational speed is less than the first sub-target rotational speed when the difference no longer increases.

[0096] The third execution unit is used to maintain the current speed operation if the first real-time speed is greater than or equal to the first sub-target speed.

[0097] In some embodiments, such as this one, the control device 200 for the photovoltaic air conditioner further includes a first acquisition unit, a first detection unit, and an eighth speed control unit.

[0098] The first acquisition unit is used to acquire the photovoltaic voltage under the non-target speed state to obtain a first voltage if the first real-time speed or the second real-time speed is running stably under the non-target speed state.

[0099] The first detection unit is used to confirm whether the second voltage is greater than the start-up voltage if it detects that the first voltage has increased and is running stably at the second voltage.

[0100] The eighth speed control unit is used to increase the first real-time speed if the second voltage is greater than the starting voltage.

[0101] In some embodiments, such as this one, the control device 200 for the photovoltaic air conditioner further includes a second confirmation unit, a fourth execution unit, and a fifth execution unit.

[0102] The second confirmation unit is used to confirm whether the second real-time speed has reached the second target speed, and whether the compressor module has reached the speed corresponding to its first stage after startup.

[0103] The fourth execution unit is used to shut down the external fan module if the second real-time rotational speed does not reach the second target rotational speed.

[0104] The fifth execution unit is used to shut down the external fan module and the compressor module if the compressor module does not reach the speed corresponding to its first stage after startup.

[0105] It should be noted that those skilled in the art can clearly understand that the specific implementation process of the control device and each unit of the above-mentioned photovoltaic air conditioner can be referred to the corresponding description in the foregoing method embodiments. For the sake of convenience and brevity, it will not be repeated here.

[0106] The control device for the aforementioned photovoltaic air conditioner can be implemented as a computer program, which can, for example... Figure 10 The photovoltaic air conditioner shown is running.

[0107] Please see Figure 10 , Figure 10 This is a schematic block diagram of a photovoltaic air conditioner provided in an embodiment of this application. It can be a terminal or a server. The terminal can be an electronic device with communication functions, such as a smartphone, tablet, laptop, desktop computer, personal digital assistant, or wearable device. The server can be a standalone server or a server cluster composed of multiple servers.

[0108] See Figure 10 The photovoltaic air conditioner 300 includes a processor 302, a memory, and an interface 307 connected via a system bus 301. The memory may include a non-volatile storage medium 303 and internal memory 304.

[0109] The non-volatile storage medium 303 can store an operating system 3031 and a computer program 3032. When the computer program 3032 is executed, it causes the processor 302 to execute a control method for a photovoltaic air conditioner.

[0110] The processor 302 provides computing and control capabilities to support the operation of the entire photovoltaic air conditioner 300.

[0111] The internal memory 304 provides an environment for the operation of the computer program 3032 in the non-volatile storage medium 303. When the computer program 3032 is executed by the processor 302, the processor 302 can execute a control method for a photovoltaic air conditioner.

[0112] This interface 305 is used for communication with other devices. Those skilled in the art will understand that... Figure 10 The structure shown is merely a block diagram of a portion of the structure related to the present application and does not constitute a limitation on the photovoltaic air conditioner 300 to which the present application is applied. The specific photovoltaic air conditioner 300 may include more or fewer components than those shown in the figure, or combine certain components, or have different component arrangements.

[0113] It should be understood that in the embodiments of this application, the processor 302 may be a central processing unit (CPU), or it may be other general-purpose processors, digital signal processors (FSPs), application-specific integrated circuits (ASICs), off-the-shelf programmable gate arrays (FPGAs), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. The general-purpose processor may be a microprocessor or any conventional processor.

[0114] It will be understood by those skilled in the art that all or part of the processes in the methods of the above embodiments can be implemented by a computer program instructing related hardware. The computer program may be stored in a storage medium, which is a computer-readable storage medium. The computer program is executed by at least one processor in the computer system to implement the process steps of the embodiments of the above methods.

[0115] Therefore, the present invention also provides a storage medium. This storage medium can be a computer-readable storage medium. The storage medium stores a computer program. When executed by a processor, the computer program implements any embodiment of the above-described photovoltaic air conditioner control method.

[0116] The storage medium can be any computer-readable storage medium capable of storing program code, such as a USB flash drive, portable hard drive, read-only memory (ROM), magnetic disk, or optical disk.

[0117] Those skilled in the art will recognize that the units and algorithm steps of the various examples described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, computer software, or a combination of both. To clearly illustrate the interchangeability of hardware and software, the components and steps of the various examples have been generally described in terms of functionality in the foregoing description. Whether these functions are implemented in hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementations should not be considered beyond the scope of this invention.

[0118] In the several embodiments provided by this invention, 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 illustrative. For example, the division of each unit is merely 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 system, or some features may be ignored or not executed.

[0119] The steps in the method of this invention can be adjusted, merged, or reduced in order according to actual needs. The units in the device of this invention can be merged, divided, or reduced according to actual needs. 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.

[0120] 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 storage medium. Based on this understanding, the technical solution of the present invention, 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 computer software product is stored in a storage medium and includes several instructions to cause a photovoltaic air conditioner to execute all or part of the steps of the methods described in the various embodiments of the present invention.

[0121] In the above embodiments, the descriptions of each embodiment have different focuses. For parts that are not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.

[0122] Obviously, those skilled in the art can make various modifications and variations to this invention without departing from its spirit and scope. Since these modifications and variations fall within the scope of the claims and their equivalents, this invention also intends to include these modifications and variations.

[0123] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in the present invention, and these modifications or substitutions should all be covered within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A control method for a photovoltaic air conditioner, characterized in that, Applied to photovoltaic air conditioning, the method includes: If the power supply mode of the photovoltaic air conditioner is detected to be photovoltaic power supply mode, the internal fan module of the photovoltaic air conditioner is controlled to start and the first real-time speed of the internal fan module is increased stepwise until the first real-time speed reaches the first target speed. If the first real-time speed reaches the first target speed, then control the outdoor fan module of the photovoltaic air conditioner to start and increase the second real-time speed of the outdoor fan module stepwise until the second real-time speed reaches the second target speed; If the second real-time speed reaches the second target speed, the compressor module of the photovoltaic air conditioner is controlled to start and the third real-time speed of the compressor module is increased stepwise until the third real-time speed reaches the third target speed to start the photovoltaic air conditioner in stages.

2. The method according to claim 1, characterized in that, The step of progressively increasing the first real-time speed of the internal fan module until the first real-time speed reaches the first target speed includes: The internal fan module is controlled to start at the lowest speed and the first real-time speed is gradually increased until the first real-time speed reaches the first sub-target speed. The first real-time rotation speed is kept consistent with the first sub-target rotation speed, and it is confirmed whether the first rate of increase of the first real-time rotation speed is the same as the preset reference speed regulation rate, and whether the photovoltaic voltage of the photovoltaic air conditioner is the same as the starting voltage. If the first rate of increase is the same as the preset reference speed regulation rate, and the photovoltaic voltage is not less than the starting voltage, then the first real-time speed is increased until the first real-time speed reaches the second sub-target speed. If the first rate of increase is the same as the preset reference speed regulation rate, and the photovoltaic voltage is not less than the starting voltage, then the first real-time speed is increased until the first real-time speed reaches the first target speed.

3. The method according to claim 2, characterized in that, The method further includes: When the internal fan module is in the first stage, if the first rate of increase is the same as the preset reference speed regulation rate and the photovoltaic voltage is less than the starting voltage, the internal fan module is turned off to allow the photovoltaic air conditioner to enter standby mode. The first stage is the interval in which the first real-time speed reaches the first sub-target speed.

4. The method according to claim 2, characterized in that, The method further includes: When the internal fan module is in the second stage, if the first rate of increase is the same as the preset reference speed regulation rate, the photovoltaic voltage is less than the starting voltage, and the difference between the photovoltaic voltage and the starting voltage increases, then the first real-time speed is reduced to reduce the first real-time speed to the first sub-target speed, wherein the second stage is the interval in which the first real-time speed reaches the second sub-target speed.

5. The method according to claim 2, characterized in that, The method further includes: When the internal fan module is in the second stage, if the first rate of increase is less than the preset reference speed regulation rate, the photovoltaic voltage is less than the starting voltage, and the difference between the photovoltaic voltage and the starting voltage increases, then the first real-time speed is reduced. If the difference no longer increases, and the first real-time rotational speed is less than the first sub-target rotational speed, then the internal fan module is turned off. If the difference no longer increases, and the first real-time rotational speed is greater than or equal to the first sub-target rotational speed, then the current rotational speed is maintained. If the difference continues to increase, the internal fan module will be shut down.

6. The method according to claim 1, characterized in that, The method further includes: If the first real-time rotational speed or the second real-time rotational speed is stably operating at a non-target rotational speed state, then the photovoltaic voltage at the non-target rotational speed state is obtained to obtain the first voltage; If the first voltage is detected to increase and the voltage is stable at the second voltage, then confirm whether the second voltage is greater than the start-up voltage. If the second voltage is greater than the starting voltage, then the first real-time rotational speed is increased.

7. The method according to claim 1, characterized in that, The method further includes: Confirm whether the second real-time speed has reached the second target speed, and whether the compressor module has reached the speed corresponding to its first stage after startup; If the second real-time speed does not reach the second target speed, then the external fan module is turned off; If the compressor module does not reach the speed corresponding to its first stage after startup, then the external fan module and the compressor module shall be shut down.

8. A control device for a photovoltaic air conditioner, characterized in that, The device includes: The first speed control unit is used to control the internal fan module of the photovoltaic air conditioner to start and increase the first real-time speed of the internal fan module in a stepwise manner until the first real-time speed reaches the first target speed if the power supply mode of the photovoltaic air conditioner is detected to be photovoltaic power supply mode. The second speed control unit is used to control the outdoor fan module of the photovoltaic air conditioner to start and increase the second real-time speed of the outdoor fan module in a stepwise manner until the second real-time speed reaches the second target speed if the first real-time speed reaches the first target speed. The first starting unit is used to start the compressor module to start the photovoltaic air conditioner if the second real-time speed reaches the second target speed.

9. A photovoltaic air conditioner, characterized in that, The photovoltaic air conditioner includes a memory and a processor connected to the memory; the memory is used to store a computer program; the processor is used to run the computer program stored in the memory to perform the steps of the method as described in any one of claims 1-7.

10. A computer-readable storage medium, characterized in that, The storage medium stores a computer program that, when executed by a processor, can implement the steps of the method as described in any one of claims 1-7.

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