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

Abstract

The invention discloses a control method and device of a photovoltaic air conditioner, the photovoltaic air conditioner and a storage medium. If yes, an inner fan module of the photovoltaic air conditioner is controlled to be started, and the first real-time rotating speed of the inner fan module is increased in a stepped mode till the first real-time rotating speed reaches the first target rotating speed; if the first real-time rotating speed reaches the first target rotating speed, an outer fan module of the photovoltaic air conditioner is controlled to be started, and the second real-time rotating speed of the outer fan module is increased in a stepped mode till the second real-time rotating speed reaches the second target rotating speed; and if the second real-time rotating speed reaches the second target rotating speed, the compressor module of the photovoltaic air conditioner is controlled to be started, and the third real-time rotating speed of the compressor module is increased in a stepped mode till the third real-time rotating speed reaches the third target rotating speed so that the photovoltaic air conditioner can be started in stages. The stability of the photovoltaic air conditioner and the use experience of a user can be improved.

Description

Technical Field

[0001] The present invention relates to the technical field of photovoltaic air conditioners, and in particular to a control method and device for a photovoltaic air conditioner, a photovoltaic air conditioner, and a storage medium. Background Art

[0002] Photovoltaic air conditioners typically offer multiple power supply modes, including photovoltaic, mains, and a hybrid of the two. Photovoltaic power supply uses photovoltaic panels to convert solar energy into electricity, which in turn powers the air conditioner. This allows the air conditioner to operate independently of mains power, saving users money on electricity. However, photovoltaic power supply is subject to environmental constraints. For example, on cloudy days or in low-light conditions such as mornings and evenings, photovoltaic air conditioners may frequently start and stop, reducing the user experience. Summary of the Invention

[0003] The embodiments of the present invention provide a control method and device for a photovoltaic air conditioner, a photovoltaic air conditioner, and a storage medium, aiming to solve the problem of frequent start and stop of the current photovoltaic air conditioner.

[0004] In a first aspect, an embodiment of the present invention provides a control method for a photovoltaic air conditioner, which is applied to a photovoltaic air conditioner. The method includes:

[0005] If it is detected that the power supply mode of the photovoltaic air conditioner is the 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 step by step until the first real-time speed reaches a first target speed;

[0006] If the first real-time speed reaches the first target speed, controlling the external fan module of the photovoltaic air conditioner to start and increasing the second real-time speed of the external fan module in a step-by-step manner 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] In a second aspect, an embodiment of the present invention further provides a control device for a photovoltaic air conditioner, the device comprising:

[0009] a first speed regulating unit, configured to control the internal fan module of the photovoltaic air conditioner to start and stepwise increase a first real-time speed of the internal fan module until the first real-time speed reaches a first target speed if it is detected that the power supply mode of the photovoltaic air conditioner is the photovoltaic power supply mode;

[0010] a second speed regulating unit, configured to control the external fan module of the photovoltaic air conditioner to start and stepwise increase the second real-time speed of the external fan module 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 configured to start the compressor module to start the photovoltaic air conditioner if the second real-time speed reaches the second target speed.

[0012] In a third aspect, an embodiment of the present invention further provides a photovoltaic air conditioner, which includes a memory and a processor connected to the memory, wherein a computer program is stored in the memory, and the processor implements the above method when executing the computer program.

[0013] In a fourth aspect, an embodiment of the present invention further provides a computer-readable storage medium, wherein the storage medium stores a computer program, and the computer program can implement the above method when executed by a processor.

[0014] Embodiments of the present invention provide a control method, device, photovoltaic air conditioner, and storage medium for a photovoltaic air conditioner. The method includes: if it is detected that the photovoltaic air conditioner is in photovoltaic power supply mode, controlling an internal fan module of the photovoltaic air conditioner to start and step-by-step increase a first real-time speed of the internal 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 an external fan module of the photovoltaic air conditioner to start and step-by-step increase a second real-time speed of the external fan module until the second real-time speed reaches a second target speed; if the second real-time speed reaches the second target speed, starting a compressor module to start the photovoltaic air conditioner. The embodiment of the present invention can start the inner fan module first when the photovoltaic air conditioner is in the photovoltaic power supply mode, and increase the first real-time speed of the inner fan module in a step-by-step manner until the first real-time speed reaches the first target speed, and then start the outer fan module, and also increase the second real-time speed of the outer fan module in a step-by-step manner until the second real-time speed reaches the second target speed, and finally start the compressor module, and increase the third real-time speed of the compressor module in a step-by-step manner until the third real-time speed reaches the third target speed. Under the step-by-step increase in real-time speed, the photovoltaic air conditioner is also started in stages, and the required power gradually increases, so that the operating power of the photovoltaic air conditioner can adapt to the output power of the photovoltaic panel, avoid frequent start and stop, and improve the stability of the photovoltaic air conditioner and the user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0016] Figure 1 1 is a flow chart of a control method for a photovoltaic air conditioner provided by an embodiment of the present invention;

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

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

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

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

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

[0022] Figure 7 This is a schematic diagram of a sixth sub-flow of the photovoltaic air conditioner control method provided by an embodiment of the present invention;

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

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

[0025] Figure 10 This is a schematic block diagram of a photovoltaic air conditioner provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0026] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

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

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

[0029] See also Figure 1 , Figure 1 This is a flow chart of the control method of the photovoltaic air conditioner provided by the embodiment of the present invention. The control method of the photovoltaic air conditioner according to the embodiment of the present invention can be applied to the photovoltaic air conditioner. When the photovoltaic air conditioner is working in the photovoltaic power supply mode, the inner fan module, the outer fan module and the compressor module can be started in sequence, and the next module can be started after the real-time speed of each module reaches its respective target speed. Moreover, for each module, the increase in its real-time speed is a step-by-step increase to smooth the demand for the operating power of the photovoltaic air conditioner, avoid the photovoltaic air conditioner from being frequently started and stopped due to changes in environmental factors, and improve the stability of the photovoltaic air conditioner. Figure 1 As shown, the method includes steps S100 to S120.

[0030] S100, if it is detected that the power supply mode of the photovoltaic air conditioner is the 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 step by step until the first real-time speed reaches a first target speed.

[0031] In an embodiment of the present invention, a photovoltaic air conditioner may include multiple power supply modes, such as a photovoltaic power supply mode, a mains power supply mode, an energy storage module power supply mode, and a hybrid power supply mode. The photovoltaic power supply mode refers to power supply only by photovoltaic panels, the mains power supply mode refers to power supply by the power grid, the energy storage module power supply mode refers to power supply by an energy storage module, such as a lithium battery, and the hybrid power supply mode refers to power supply by mixing one or more other power supply modes on the basis of photovoltaic power supply, 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 supply, a phased and multi-step strategy is used to start the photovoltaic air conditioner. That is, the internal fan module, external fan module and compressor module will not be started at the same time. Instead, the priority of different modules will be set according to the mode of the photovoltaic air conditioner, and the modules will be started according to the priority. For example, in cooling mode, the priority of the internal fan module is higher than that of the external fan module, and the priority of the external fan module is higher than that of the compressor module. The starting sequence is to start the internal fan module first, and after the internal fan module is started, start the external fan module. After the external fan module is started, start the compressor module last. If in heating mode, the external fan module can be started first, then the compressor module, and finally the internal fan module. It can be understood that the heating mode and the cooling mode are only different in the starting sequence of different modules. The principle of step-by-step speed regulation at the time of startup for the same module is the same. The following is only explained using the cooling mode as an example. The heating mode can refer to the description of the cooling mode.

[0033] In cooling mode, the interior fan module is prioritized for activation. The interior fan module can be controlled to start at the lowest gear and then slowly increase its first real-time speed until it reaches the first target speed. Assuming the speed corresponding to the lowest gear is Vmin and the first target speed is 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 speed of V1, V2, and V3. The first real-time speed then increases from Vmin to V1, then from V1 to V2, then from V2 to V3, and finally from V3 to Vmax. In other words, the first real-time speed does not increase directly from Vmin to Vmax, thus preventing the PV air conditioner from initially operating at a high power level. Each stage can be assigned a judgment condition. Only when the judgment condition is met will the speed be increased. If the judgment condition is not met, the interior fan module can be reduced or shut down. This judgment condition is related to the output power of the PV air conditioner, such as the PV voltage or current.

[0034] In certain embodiments, for example, in embodiments of the present invention, Figure 2 As shown, the step 100 includes steps S101-S104.

[0035] S101, controlling the interior fan module to start at the lowest speed and gradually increasing the first real-time speed until the first real-time speed reaches a first sub-target speed;

[0036] S102, maintaining the first real-time speed consistent with the first sub-target speed, and confirming whether a first increasing rate of the first real-time speed is the same as a preset reference speed regulation rate, and confirming whether the photovoltaic voltage of the photovoltaic air conditioner is the same as a starting voltage;

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

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

[0039] In an embodiment of the present invention, multiple steps can be set between the minimum speed and the first target speed, with different steps corresponding to different speeds. The number of steps can be determined by environmental factors such as the location of the photovoltaic air conditioner and lighting conditions. For example, two steps are set between the minimum speed and the first target speed, with each step corresponding to a step speed, namely, the first sub-target speed and the second sub-target speed.

[0040] When the first real-time speed of the internal fan module increases from the lowest gear speed, the speed will first be increased to the first sub-target speed. When the first real-time speed is maintained at the first sub-target speed, the first rise rate and the current output voltage of the photovoltaic air conditioner, i.e., the photovoltaic voltage, can be obtained. The first rise rate is the average rate at which the first real-time speed increases from the lowest gear speed to the first sub-target speed. The preset baseline speed regulation rate is the rate corresponding to the first real-time speed when accelerating when the photovoltaic power supply is sufficient. The starting voltage is the output voltage of the photovoltaic panel before the photovoltaic air conditioner is started, and the photovoltaic voltage is the current output voltage of the photovoltaic panel.

[0041] By comparing the first ramp-up rate with a preset baseline speed-regulating rate, and 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 ramp-up rate and the photovoltaic voltage can be used as conditions for determining whether to increase the speed. When the first ramp-up rate is the same as the preset baseline speed-regulating rate, and the photovoltaic voltage is not less than the starting voltage, the speed-up condition is met, and the speed can continue to increase. It should be understood that the first ramp-up rate and the preset baseline speed-regulating rate do not need to be exactly the same, and a certain range of error is acceptable.

[0042] When the speed-up conditions are met, continue to increase the first real-time speed until the first real-time speed reaches the second sub-target speed. When the first real-time speed reaches the second sub-target speed, continue to confirm whether the speed-up conditions are met. If so, the first real-time speed can be increased to the first target speed. If not, it is necessary to reduce the speed.

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

[0044] In certain embodiments, for example, in embodiments of the present invention, Figure 3 As shown, step 100 includes step S105.

[0045] S105, when the internal fan module is in the first stage, if the first rising rate 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 put the photovoltaic air conditioner into a standby state, wherein the first stage is the interval in which the first real-time speed reaches the first sub-target speed.

[0046] In an embodiment of the present invention, the stepped speed corresponding to the first stage is the first sub-target speed. If the first rising rate in the first stage is the same as the preset reference speed regulation rate, 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 is controlled to enter the standby state.

[0047] In certain embodiments, for example, in embodiments of the present invention, 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 an embodiment of the present invention, the stepped 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 rising rate 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, and 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 certain embodiments, for example, in embodiments of the present invention, Figure 5 As shown, step 100 includes steps S107-S109a.

[0051] S107, when the interior 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 reducing the first real-time speed;

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

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

[0054] S109a: If the difference continues to increase, turn off the internal fan module.

[0055] In an embodiment of the present invention, when the first real-time speed is in the second stage, the first rate of increase is less than the preset baseline speed regulation rate, the photovoltaic voltage is less than the starting voltage, and the photovoltaic voltage continues to decrease, the first real-time speed can be sequentially reduced until the photovoltaic voltage no longer decreases. When the first rate of increase is less than the preset baseline speed regulation rate and the photovoltaic voltage continues to decrease, indicating that the output power of the photovoltaic panel has decreased due to issues such as illumination, making it impossible to maintain high power operation, the first real-time speed can be reduced to match the photovoltaic voltage.

[0056] When the first real-time speed is reduced, if the difference between the photovoltaic voltage and the starting voltage does not increase 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 below the first sub-target speed, the interior fan module is 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 interior fan module can be directly shut down regardless of whether the first real-time speed falls below the first sub-target speed.

[0057] S110: If the first real-time speed reaches the first target speed, control the external fan module of the photovoltaic air conditioner to start and stepwise increase the second real-time speed of the external fan module until the second real-time speed reaches the second target speed.

[0058] In this embodiment of the present invention, the external fan module is activated only after the first real-time speed of the internal fan module reaches the first target speed. Similarly, 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 identical to that for the internal fan module. The following process is provided for reference only. For detailed descriptions, please refer to the description of the internal fan module.

[0059] Controlling the external fan module to start at the lowest speed and gradually increasing the second real-time speed until the second real-time speed reaches a third sub-target speed;

[0060] Maintaining the second real-time speed consistent with the third sub-target speed, confirming whether a second increasing rate of the second real-time speed is the same as a preset reference speed regulation rate, and confirming whether the photovoltaic voltage of the photovoltaic air conditioner is the same as the starting voltage;

[0061] If the second increasing rate 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 second real-time speed until the second real-time speed reaches a fourth sub-target speed;

[0062] If the second increasing rate 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 second real-time speed 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 rising rate is the same as the preset reference speed regulation rate and the photovoltaic voltage is less than the starting voltage, the external fan module is turned off to put the photovoltaic air conditioner into a standby state, wherein 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 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 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 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 reducing the second real-time speed 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 speed is less than the third sub-target speed, turning off the external fan module;

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

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

[0069] In an embodiment of the present invention, after both the inner and outer fan modules reach their respective target speeds, the compressor module is activated and the third real-time speed of the compressor module is increased in a stepwise manner until the third real-time speed reaches the third target speed, thereby achieving phased activation of the photovoltaic air conditioner. This allows the operating power of the photovoltaic air conditioner to match the output power of the photovoltaic panel. The stepwise strategy for the compressor module can be referenced to the stepwise strategy for the inner and outer fan modules and will not be further described.

[0070] like Figure 8 As shown, Figure 8 Provides a logic block diagram of the step-by-step strategy for the internal fan module. Figure 8 The internal fan module includes three stages, each stage corresponds to a step speed. When the first real-time speed reaches the step speed of each stage, a speed-up condition will be judged. If the speed-up condition is met, the speed will be increased to the next stage. If not, the speed will be reduced or the internal fan module will be turned off. Figure 8 In FIG, V is the first rising rate, V1 is the preset reference speed regulation rate, and Vs is the starting voltage.

[0071] In certain embodiments, for example, in embodiments of the present invention, Figure 6 As shown, the method includes steps S130-S132.

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

[0073] S131, if it is detected that the first voltage increases and stably operates at a second voltage, confirm whether the second voltage is greater than a starting voltage;

[0074] S132: If the second voltage is greater than the starting voltage, increase the first real-time rotation speed.

[0075] In this embodiment of the present invention, non-target speeds refer to speeds other than the stage speeds set for different stages and the final target speed. If the first sub-target speed, the second sub-target speed, and the first target speed are all target speeds, any speeds between these three can be considered non-target speeds. When the first real-time speed remains at the non-target speed, the corresponding photovoltaic voltage can be used to obtain the first voltage. When the first voltage increases to the 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 benchmark speed regulation rate, the photovoltaic voltage is less than the starting voltage, and the photovoltaic voltage is slowly decreasing, then the first real-time speed begins to slow down, if the photovoltaic voltage no longer decreases when the first real-time speed decreases to Vx, then the photovoltaic voltage corresponding to Vx is the first voltage, if after a period of time, such as a few minutes, the first voltage begins to rise, such as rising to the second voltage, and the second voltage is greater than the starting voltage, then the speed of the first real-time speed can continue to increase to reach the second sub-target speed. It can be understood that the second voltage is any voltage greater than the first voltage, which is used to indicate that the photovoltaic voltage begins 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 repeated.

[0077] In certain embodiments, for example, in embodiments of the present invention, Figure 7 As shown, the method includes steps S140-S142.

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

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

[0080] S142: If the compressor module does not reach the rotation speed corresponding to the first stage after startup, turn off the external fan module and the compressor module.

[0081] In an embodiment of the present invention, the compressor module is activated only when the second real-time speed of the external fan module reaches the second target speed. That is, if the second real-time speed of the external fan module fails to reach the second target speed for a long period of time during the second real-time speed of the external fan module, the external fan module can be shut down. Similarly, if the compressor module fails to reach the speed corresponding to the first stage after being started, both the external fan module and the compressor module can be shut down.

[0082] The control method of the photovoltaic air conditioner disclosed in the present invention can start the inner fan module, the outer fan module and the compressor module in sequence, and adopts a step-by-step strategy for the speed of each module to match the output power of the photovoltaic panel, avoiding frequent start and stop, thereby improving the stability of the photovoltaic air conditioner and the user experience.

[0083] Figure 9 FIG. 2 is a schematic block diagram of a photovoltaic air conditioner control device 200 provided by an embodiment of the present invention. Figure 9 As shown, corresponding to the above photovoltaic air conditioner control method, the present invention also provides a photovoltaic air conditioner control device 200. The photovoltaic air conditioner control device 200 includes a unit for executing the above photovoltaic air conditioner control method. Figure 9 The photovoltaic air conditioner control device 200 includes a first speed regulating unit 201 , a second speed regulating unit 202 and a first starting unit 203 .

[0084] The first speed regulating unit 201 is configured to control the internal fan module of the photovoltaic air conditioner to start and stepwise increase the first real-time speed of the internal fan module until the first real-time speed reaches a first target speed if it is detected that the power supply mode of the photovoltaic air conditioner is the photovoltaic power supply mode;

[0085] a second speed regulating unit 202 configured to control the external fan module of the photovoltaic air conditioner to start and stepwise increase the second real-time speed of the external fan module 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 configured 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 regulation unit 201 also includes a third speed regulation unit, a first confirmation unit, a fourth speed regulation unit, a fifth speed regulation unit, a first execution unit, a sixth speed regulation unit, a seventh speed regulation unit, a second execution unit, and a third execution unit.

[0088] wherein the third speed regulating unit is configured 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 a first sub-target speed;

[0089] a first confirmation unit, configured to maintain the first real-time speed consistent with the first sub-target speed, confirm whether a first rising rate of the first real-time speed is the same as a preset reference speed regulation rate, and confirm whether the photovoltaic voltage of the photovoltaic air conditioner is the same as a starting voltage;

[0090] a fourth speed regulating unit, configured to continue increasing the first real-time speed until the first real-time speed reaches a second sub-target speed if the first increasing rate is the same as the preset reference speed regulating rate and the photovoltaic voltage is not less than the starting voltage;

[0091] a fifth speed regulating unit, configured to continue increasing the first real-time speed until the first real-time speed reaches the first target speed if the first increasing rate is the same as the preset reference speed regulating rate and the photovoltaic voltage is not less than the starting voltage;

[0092] a first execution unit, configured to, when the interior fan module is in a first stage, if the first rising rate is the same as the preset reference speed regulation rate and the photovoltaic voltage is less than the starting voltage, turn off the interior fan module to put the photovoltaic air conditioner into a standby state, wherein the first stage is a period in which the first real-time speed reaches the first sub-target speed;

[0093] a sixth speed regulating unit, configured to, when the internal fan module is in the second stage, reduce the first real-time speed to reduce the first real-time speed to the first sub-target speed if the first rising rate is the same as the preset reference speed regulating rate, the photovoltaic voltage is less than the starting voltage, and the difference between the photovoltaic voltage and the starting voltage increases, wherein the second stage is a period in which the first real-time speed reaches the second sub-target speed;

[0094] a seventh speed regulating unit, configured to, when the inner fan module is in the second stage, reduce the first real-time speed if the first rising rate is less than the preset reference speed regulating rate, the photovoltaic voltage is less than the starting voltage, and the difference between the photovoltaic voltage and the starting voltage increases;

[0095] a second execution unit, configured to shut down the internal fan module if the difference no longer increases and the first real-time speed is less than the first sub-target speed;

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

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

[0098] Wherein, the first acquisition unit is configured to acquire the photovoltaic voltage in the non-target speed state to obtain the first voltage if the first real-time speed or the second real-time speed is stably running in the non-target speed state;

[0099] a first detection unit, configured to confirm whether the second voltage is greater than a starting voltage if it is detected that the first voltage increases and stably operates at a second voltage;

[0100] An eighth speed regulating unit is configured to increase the first real-time speed if the second voltage is greater than the starting voltage.

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

[0102] The second confirmation unit is used to respectively confirm whether the second real-time speed reaches the second target speed, and whether the compressor module reaches the speed corresponding to the first stage after startup;

[0103] a fourth execution unit, configured to turn off the external fan module if the second real-time speed does not reach the second target speed;

[0104] The fifth execution unit is configured to shut down the external fan module and the compressor module if the compressor module does not reach the rotation speed corresponding to the 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 refer to the corresponding description in the aforementioned method embodiment. For the convenience and brevity of description, it will not be repeated here.

[0106] The control device of the photovoltaic air conditioner can be implemented in the form of a computer program. The computer program can be used in Figure 10 The photovoltaic air conditioner is shown running.

[0107] See also Figure 10 , Figure 10 This is a schematic block diagram of a photovoltaic air conditioner provided in an embodiment of the present application. It can be either a terminal or a server. A terminal can be a communication-capable electronic device such as a smartphone, tablet computer, laptop computer, desktop computer, personal digital assistant, or wearable device. The server can be a standalone server or a server cluster consisting 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 , wherein the memory may include a non-volatile storage medium 303 and an 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, the processor 302 can execute a control method for a photovoltaic air conditioner.

[0110] The processor 302 is used to provide 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] The interface 305 is used to communicate with other devices. Those skilled in the art will appreciate that Figure 10 The structure shown in the figure is only a block diagram of a part of the structure related to the solution of the present application, and does not constitute a limitation on the photovoltaic air conditioner 300 to which the solution of the present application is applied. The specific photovoltaic air conditioner 300 may include more or fewer components than shown in the figure, or combine certain components, or have a different component arrangement.

[0113] It should be understood that in the embodiment of the present application, the processor 302 may be a central processing unit (CPU), and the processor 302 may also be other general-purpose processors, digital signal processors (FSP), application-specific integrated circuits (ASIC), field-programmable gate arrays (FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. Among them, the general-purpose processor may be a microprocessor or the processor may also be any conventional processor, etc.

[0114] Those skilled in the art will appreciate that all or part of the steps in the method of the above-described embodiment can be implemented by instructing the relevant hardware through a computer program. The computer program can be stored in a computer-readable storage medium. The computer program is executed by at least one processor in the computer system to implement the steps in the method of the above-described embodiment.

[0115] Therefore, the present invention further provides a storage medium. The storage medium may 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 photovoltaic air conditioner control method.

[0116] The storage medium may be any computer-readable storage medium that can store program codes, such as a USB flash drive, a mobile hard disk, a read-only memory (ROM), a magnetic disk, or an optical disk.

[0117] Those skilled in the art will appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, computer software, or a combination of the two. In order to clearly illustrate the interchangeability of hardware and software, the above description has generally described the composition and steps of each example according to function. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered to be beyond the scope of the present invention.

[0118] In the several embodiments provided herein, it should be understood that the disclosed devices and methods can be implemented in other ways. For example, the device embodiments described above are merely illustrative. For example, the division of the various units is merely a logical functional division, and actual implementation may employ other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be omitted or not implemented.

[0119] The steps in the methods of the embodiments of the present invention may be adjusted in order, combined, or deleted as needed. The units in the devices of the embodiments of the present invention may be combined, divided, or deleted as needed. Furthermore, the functional units in the various embodiments of the present invention may be integrated into a single processing unit, each unit may exist physically separately, or two or more units may be integrated into a single unit.

[0120] If this 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, or the part that contributes to the existing technology, 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 a number of instructions for causing a photovoltaic air conditioner to execute all or part of the steps of the method described in various embodiments of the present invention.

[0121] In the above embodiments, the description of each embodiment has its own focus. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0122] Obviously, those skilled in the art may make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, to the extent such changes and modifications fall within the scope of the claims and their equivalents, the present invention is intended to encompass such changes and modifications.

[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 such modifications or substitutions are intended to be within the scope of protection of the present invention. Therefore, the scope of protection of the present invention shall be subject to the scope of protection 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 it is detected that the power supply mode of the photovoltaic air conditioner is the 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 step by step until the first real-time speed reaches a first target speed; If the first real-time speed reaches the first target speed, controlling the external fan module of the photovoltaic air conditioner to start and increasing the second real-time speed of the external fan module in a step-by-step manner 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 in steps 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 increasing the first real-time speed of the internal fan module in a stepwise manner until the first real-time speed reaches a first target speed includes: Controlling 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 a first sub-target speed; Maintaining the first real-time speed consistent with the first sub-target speed, confirming whether a first rising rate of the first real-time speed is the same as a preset reference speed regulation rate, and confirming whether the photovoltaic voltage of the photovoltaic air conditioner is the same as the starting voltage; If the first increasing rate 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 a second sub-target speed; If the first rising rate is the same as the preset reference speed regulation rate, and the photovoltaic voltage is not less than the starting voltage, the first real-time speed continues to be 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 comprises: When the internal fan module is in the first stage, if the first rising rate 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 put the photovoltaic air conditioner into standby state, wherein 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 comprises: 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, 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 comprises: 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 reducing the first real-time speed; If the difference no longer increases and the first real-time speed is less than the first sub-target speed, turning off the internal fan module; If the difference no longer increases and the first real-time speed is greater than or equal to the first sub-target speed, the current speed is maintained. If the difference continues to increase, the internal fan module is turned off.

6. The method according to claim 1, characterized in that The method further comprises: If the first real-time speed or the second real-time speed is stably running in a non-target speed state, acquiring the photovoltaic voltage in the non-target speed state to obtain a first voltage; If it is detected that the first voltage increases and stably operates at a second voltage, confirming whether the second voltage is greater than a starting voltage; If the second voltage is greater than the starting voltage, the first real-time rotation speed is increased.

7. The method according to claim 1, characterized in that The method further comprises: respectively confirming whether the second real-time speed reaches the second target speed, and whether the compressor module reaches the speed corresponding to the first stage after startup; If the second real-time speed does not reach the second target speed, turning off the external fan module; If the compressor module does not reach the rotation speed corresponding to the first stage after startup, the external fan module and the compressor module are turned off.

8. A photovoltaic air conditioner control device, characterized in that: The device comprises: a first speed regulating unit, configured to control the internal fan module of the photovoltaic air conditioner to start and stepwise increase a first real-time speed of the internal fan module until the first real-time speed reaches a first target speed if it is detected that the power supply mode of the photovoltaic air conditioner is the photovoltaic power supply mode; a second speed regulating unit, configured to control the external fan module of the photovoltaic air conditioner to start and stepwise increase the second real-time speed of the external fan module 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 configured 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 according to any one of claims 1 to 7.

10. A computer-readable storage medium, characterized in that The storage medium stores a computer program, and when the computer program is executed by a processor, the steps of the method according to any one of claims 1 to 7 can be implemented.

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