Power supply control method and device of solar air conditioner and air conditioner

Abstract

The application relates to the technical field of air conditioners, and provides a power supply control method and device of a solar air conditioner and the air conditioner. The power supply control method of the solar air conditioner comprises the following steps: in the case that the solar air conditioner is in a hybrid power supply mode and is powered to operate, acquiring an AC bus voltage value of commercial power in the hybrid power supply mode; determining that the AC bus voltage value of the commercial power is greater than or equal to a target preset value, controlling the commercial power in the hybrid power supply mode to be turned off, and powering the solar air conditioner in the hybrid power supply mode with solar DC power. The application can avoid the phenomenon that voltage surge impact on the air conditioner is caused by insufficient commercial power supply or unstable fluctuation of commercial power voltage in the hybrid power supply mode, thereby protecting the air conditioner, and the power supply demand can be ensured as much as possible through the solar DC power, and the user experience is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of air conditioners, and in particular to a power supply control method and device for a solar air conditioner and the air conditioner. BACKGROUND

[0002] A solar air conditioner refers to an air conditioner that can be powered by a solar photovoltaic panel. The solar air conditioner generally has a solar power supply mode, a mains power supply mode, and a hybrid power supply mode combining solar power and mains power. Using solar new energy for power supply can achieve the purpose of energy saving and environmental protection.

[0003] Currently, when a solar air conditioner is in a hybrid power supply mode and is started, in the case of insufficient mains power supply or unstable mains voltage fluctuations in remote areas, a voltage surge impact on the solar air conditioner can occur, with a maximum voltage fluctuation of up to 2000V, which can easily cause the computer board of the solar air conditioner to be punctured, resulting in damage to the solar air conditioner and preventing it from operating normally. SUMMARY

[0004] The present application provides a power supply control method and device for a solar air conditioner and the air conditioner, which can avoid the phenomenon of voltage surge impact on the air conditioner due to insufficient mains power supply or unstable mains voltage fluctuations in the energy-saving hybrid power supply mode, thereby effectively protecting the air conditioner and ensuring power supply requirements as much as possible to improve user experience.

[0005] The present application provides a power supply control method for a solar air conditioner, comprising:

[0006] In the case of hybrid power supply mode power supply operation of the solar air conditioner, the AC bus voltage value of the mains in the hybrid power supply mode is obtained.

[0007] When the AC bus voltage value of the mains is greater than or equal to a target preset value, the mains in the hybrid power supply mode is controlled to be turned off, and the solar DC power supply in the hybrid power supply mode is operated.

[0008] According to the power supply control method for a solar air conditioner provided by the present application, the step of determining that the AC bus voltage value of the mains is greater than or equal to a target preset value, controlling the mains in the hybrid power supply mode to be turned off, and operating the solar DC power supply in the hybrid power supply mode, specifically comprises:

[0009] The number of times that the AC bus voltage value of the mains is greater than or equal to the target preset value within a set time period is obtained.

[0010] If the number of times that the AC bus voltage value of the commercial power is greater than or equal to the target preset value within the set time length reaches a target preset number of times, the commercial power in the hybrid power mode is controlled to be turned off, and the solar DC power in the hybrid power mode is controlled to be used for power supply operation.

[0011] According to the power supply control method of the solar air conditioner provided by the application, after the step of obtaining the number of times that the AC bus voltage value of the commercial power is greater than or equal to the target preset value within the set time length, the method further comprises the steps of:

[0012] If the number of times that the AC bus voltage value of the commercial power is greater than or equal to the target preset value within the set time length does not reach the target preset number of times, the solar air conditioner is controlled to be powered in the hybrid power mode.

[0013] According to the power supply control method of the solar air conditioner provided by the application, the step of controlling the commercial power in the hybrid power mode to be turned off specifically comprises the steps of:

[0014] The commercial power supply power in the hybrid power mode is controlled to decrease to a first preset power value at a first preset rate and continuously operate for a first preset time length;

[0015] After the first preset time length is operated, the commercial power supply power in the hybrid power mode is controlled to decrease to a second preset power value at a second preset rate and continuously operate for a second preset time length;

[0016] After the second preset time length is operated, the commercial power supply power in the hybrid power mode is controlled to decrease to zero at a third preset rate.

[0017] The first preset rate is less than the second preset rate, the second preset rate is less than the third preset rate, and the first preset time length is greater than the second preset time length.

[0018] According to the power supply control method of the solar air conditioner provided by the application, the step of controlling the solar DC power in the hybrid power mode to be used for power supply operation specifically comprises the steps of:

[0019] In the process that the commercial power supply power in the hybrid power mode decreases to the first preset power value, the solar DC power supply current in the hybrid power mode is controlled to increase to a first preset current value at a fourth preset rate and continuously operate for the first preset time length;

[0020] In the process that the commercial power supply power in the hybrid power mode decreases from the first preset power value to the second preset power value, the solar DC power supply current in the hybrid power mode is controlled to increase to a second preset current value at a fifth preset rate and continuously operate for the second preset time length.

[0021] In the process that the mains power in the hybrid power mode is decreased from the second preset power value to zero, the solar direct current power supply current in the hybrid power mode is increased to the maximum current value at a sixth preset rate;

[0022] The fourth preset rate is less than the fifth preset rate, and the fifth preset rate is less than the sixth preset rate. The first preset current value is less than the second preset current value, and the second preset current value is less than the maximum current value.

[0023] According to the power supply control method of the solar air conditioner provided by the application, when the solar air conditioner is powered by the solar direct current in the hybrid power mode, the method further comprises the following steps:

[0024] obtaining the current operation parameters of the solar air conditioner;

[0025] sending the current operation parameters of the solar air conditioner to a user terminal for reminding.

[0026] According to the power supply control method of the solar air conditioner provided by the application, the current operation parameters of the solar air conditioner include the current power generation of the solar air conditioner, the current operation frequency of the compressor of the solar air conditioner and the current temperature of the indoor coil of the solar air conditioner.

[0027] According to the power supply control method of the solar air conditioner provided by the application, the step that the solar air conditioner is powered in the hybrid power mode specifically comprises the following steps:

[0028] obtaining the power supply capacity of the solar direct current;

[0029] determining that the power supply capacity of the solar direct current reaches a target preset capacity, and controlling the solar air conditioner to be powered in the hybrid power mode.

[0030] The application further provides a power supply control device of a solar air conditioner, which comprises the following components:

[0031] an obtaining module, configured to obtain the AC bus voltage value of the mains in the hybrid power mode when the solar air conditioner is powered in the hybrid power mode;

[0032] a control module, configured to determine that the AC bus voltage value of the mains is greater than or equal to a target preset value, control the mains to be turned off in the hybrid power mode, and control the solar air conditioner to be powered by the solar direct current in the hybrid power mode.

[0033] The application further provides an air conditioner, which comprises the power supply control device of the solar air conditioner or adopts the power supply control method of the solar air conditioner when the power supply is controlled.

[0034] The application provides a power supply control method and device of a solar air conditioner and the air conditioner, and the method comprises the following steps: acquiring the AC bus voltage value of the commercial power in the hybrid power mode when the solar air conditioner is in the hybrid power mode; and when it is determined that the AC bus voltage value of the commercial power is greater than or equal to a target preset value, the commercial power in the hybrid power mode is controlled to be turned off, and the solar DC power in the hybrid power mode is used for power supply operation, so that the phenomenon of voltage surge impact on the air conditioner caused by insufficient commercial power supply or unstable commercial power voltage fluctuation in the energy-saving hybrid power mode can be avoided, thereby protecting the air conditioner, and the power supply demand can be ensured as much as possible by using the solar DC power, and the user experience is improved. BRIEF DESCRIPTION OF DRAWINGS

[0035] In order to more clearly illustrate the technical solutions in the application or the related art, the following will briefly introduce the drawings needed to be used in the embodiments or the related art description. Obviously, the drawings in the following description are some embodiments of the application, and other drawings can be obtained by those skilled in the art without any creative effort on the basis of these drawings.

[0036] Figure 1 is one of the flowcharts of the power supply control method of the solar air conditioner provided by the application;

[0037] Figure 2 is the second flowchart of the power supply control method of the solar air conditioner provided by the application;

[0038] Figure 3 is the working principle diagram of controlling the commercial power in the hybrid power mode to be turned off;

[0039] Figure 4 is the working principle diagram of controlling the solar air conditioner to be powered by the solar DC power in the hybrid power mode;

[0040] Figure 5 is the third flowchart of the power supply control method of the solar air conditioner provided by the application;

[0041] Figure 6 is the structural diagram of the power supply control device of the solar air conditioner provided by the application.

[0042] Reference signs:

[0043] 610: acquisition module; 620: control module. DETAILED DESCRIPTION

[0044] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of this 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 this invention. All other embodiments obtained by those skilled in the art based on the embodiments of this invention without creative effort are within the scope of protection of this invention.

[0045] In the description of the embodiments of the present invention, it should be noted that the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0046] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0047] The following is combined Figures 1-6 The present invention describes a power supply control method, apparatus, and air conditioner for a solar-powered air conditioner.

[0048] According to an embodiment of the first aspect of the present invention, referring to Figure 1 As shown, the power supply control method for a solar air conditioner provided by the present invention mainly includes the following steps:

[0049] S100. When the solar air conditioner is operating in hybrid mode, obtain the AC bus voltage value of the mains power in the hybrid mode.

[0050] S200: Determine that the AC bus voltage of the mains power is greater than or equal to the target preset value, control the mains power to be shut off in the hybrid mode, and operate with the solar DC power supply in the hybrid mode.

[0051] The power supply modes of solar air conditioners mainly include: solar power supply mode, mains power supply mode, and a hybrid mode combining solar and mains power supply. Solar power supply mode refers to supplying power to the air conditioner through solar photovoltaic panels, and the current power supply can be detected by MPPT. Hybrid mode refers to supplying power through both solar energy and mains power simultaneously. When the power supply mode of a solar air conditioner is either solar power supply mode or hybrid mode, it can reduce energy loss and achieve energy saving.

[0052] Therefore, when a user controls the solar air conditioner to operate in hybrid mode for energy saving, insufficient mains power supply or unstable mains voltage fluctuations can cause voltage surges to the solar air conditioner. The maximum voltage fluctuation can reach a surge of 2000V, which can easily damage the computer board of the solar air conditioner, causing damage and preventing it from operating normally.

[0053] To address this, the present invention detects the AC bus voltage of the mains power in the energy-saving hybrid mode in real time and compares it with a target preset value. When the detected AC bus voltage is greater than or equal to the target preset value (i.e., the safe voltage value), the mains power supply is turned off, and the solar-powered air conditioner is powered by pure DC power from the solar system. This avoids voltage surges to the air conditioner caused by insufficient mains power supply or unstable mains voltage fluctuations in the hybrid mode. The safe voltage value can generally be set to 310V.

[0054] Therefore, the power supply control method for solar air conditioners provided in this embodiment of the invention obtains the AC bus voltage value of the mains power in the hybrid mode when the solar air conditioner is operating in hybrid mode. When it is determined that the AC bus voltage value of the mains power is greater than or equal to a target preset value, the mains power in the hybrid mode is turned off, and the air conditioner is powered by solar DC power in the hybrid mode. This can avoid voltage surge impacts on the air conditioner caused by insufficient mains power supply or unstable mains voltage fluctuations in the energy-saving hybrid mode, thereby protecting the air conditioner. Furthermore, the solar DC power can ensure power supply needs as much as possible, improving the user experience.

[0055] According to one embodiment of the present invention, referring to Figure 2 As shown, the steps for determining that the AC bus voltage of the mains power is greater than or equal to the target preset value, controlling the mains power to be shut off in the hybrid mode, and operating with solar DC power in the hybrid mode specifically include:

[0056] S201. Obtain the number of times the AC bus voltage value of the mains power is greater than or equal to the target preset value within a set time period;

[0057] S202. If the AC bus voltage of the mains power reaches the target preset value a certain number of times within a set time period, the mains power in the hybrid mode is shut off, and the system is powered by solar DC power in the hybrid mode.

[0058] During actual operation, solar air conditioners may be affected by factors such as power supply environment and human control, causing sudden and brief fluctuations in mains voltage, i.e., one or two instances where the voltage exceeds or equals the target preset value, and then returns to normal. If the mains power is turned off at this time, it is a misjudgment.

[0059] Therefore, to avoid misjudgment, this embodiment of the invention continuously detects the number of times the AC bus voltage value is greater than or equal to the safe voltage value within a certain period of time. If the number of times the detected AC bus voltage value is greater than or equal to the safe voltage value reaches a target preset number (i.e., the safe set number) within a certain period of time, it indicates that the voltage fluctuation phenomenon is not accidental and there is a risk of voltage surge. At this time, the mains power is shut off, which can effectively protect the air conditioner and improve the control accuracy of the power supply mode, thereby ensuring the user experience. The detection set period can be 30 to 90 seconds, and the target preset number can be 3 to 5 times.

[0060] Furthermore, after the step of obtaining the number of times the AC bus voltage value of the mains power is greater than or equal to the target preset value within a set time period, the following step is also included:

[0061] S203. If the AC bus voltage of the mains power supply is greater than or equal to the target preset value for a set period of time but the target preset number of times is not reached, control the solar air conditioner to operate in hybrid mode.

[0062] For example, if the AC bus voltage of the mains power supply is greater than or equal to the target preset value less than 3 times within 60 seconds, it indicates that the power supply is normal. The solar air conditioner is then controlled to continue operating in hybrid mode to achieve energy saving and environmental protection, and improve the user experience.

[0063] According to one embodiment of the present invention, referring to Figure 3As shown, if the AC bus voltage of the mains power reaches a target preset value a certain number of times within a set time period, the step of controlling the mains power to shut down in the hybrid mode specifically includes: controlling the mains power supply power P0 in the hybrid mode to decrease to a first preset power value P1 at a first preset rate, and continuing to run for a first preset time T1; after running for the first preset time T1, controlling the mains power supply power in the hybrid mode to decrease from the first preset power value P1 to the second preset power value P2 at a second preset rate, and continuing to run for a second preset time T2; after running for the second preset time T2, controlling the mains power supply power in the hybrid mode to decrease from the second preset power value P2 to zero at a third preset rate, thereby shutting down the mains power supply. Wherein, the first preset rate is less than the second preset rate, the second preset rate is less than the third preset rate, and the first preset time period is greater than the second preset time period.

[0064] It is understandable that if the mains power in the hybrid mode of a solar air conditioner is suddenly turned off, the power supply will drop sharply, which may cause the solar air conditioner to malfunction and damage it.

[0065] Therefore, the embodiments of the present invention adopt a step-by-step reduction of mains power, and design the first preset rate to be less than the second preset rate, the second preset rate to be less than the third preset rate, and the first preset duration to be greater than the second preset duration. This can quickly shut off the mains power while protecting the air conditioner as much as possible, thereby improving control efficiency.

[0066] According to one embodiment of the present invention, referring to Figure 4As shown, the steps for controlling a solar air conditioner to operate in hybrid mode using solar DC power include: During the process of the mains power supply P0 decreasing to a first preset power value P1 in hybrid mode, controlling the solar DC power supply current I0 in hybrid mode to increase to a first preset current value I1 at a fourth preset rate, and continuing to operate for a first preset duration T1; during the process of the mains power supply power decreasing from the first preset power value P1 to a second preset power value P2 in hybrid mode, controlling the solar DC power supply current in hybrid mode to increase from the first preset current value I1 to a second preset current value I2 at a fifth preset rate, and continuing to operate for a second preset duration T2; during the process of the mains power supply power decreasing from the second preset power value P2 to zero in hybrid mode, controlling the solar DC power supply current in hybrid mode to increase from the second preset current value I2 to a maximum current value I3 at a sixth preset rate. Wherein, the fourth preset rate is less than the fifth preset rate, the fifth preset rate is less than the sixth preset rate; the first preset current value is less than the second preset current value, and the second preset current value is less than the maximum current value. Furthermore, the duration of each stage of the mains power supply decrease can correspond to the duration of each stage of the solar DC power supply increase, thus maintaining synchronous adjustment.

[0067] It is understandable that switching a solar air conditioner from hybrid mode to solar power mode will cause a decrease in power supply, resulting in a decrease in the heat exchange efficiency of the solar air conditioner.

[0068] Therefore, this invention proposes a method that synchronizes the design with the reduction of mains power. As the mains power gradually decreases, the solar DC power supply current gradually increases in a stepwise manner, which can improve the power supply of the solar air conditioner. This ensures the heat exchange effect at each stage during the reduction of mains power, thereby guaranteeing the user experience.

[0069] According to one embodiment of the present invention, when the solar air conditioner is operating in a hybrid mode powered by solar DC power, the method further includes the steps of: obtaining the current operating parameters of the solar air conditioner; and sending the current operating parameters of the solar air conditioner to the user terminal for reminder, so that the user can understand the relevant operating status of the air conditioner in real time and improve the user experience.

[0070] For example, the computer board in the solar air conditioner communicates wirelessly with user terminals such as mobile phones. When the solar air conditioner is running, it sends the detected operating parameters to the APP on the mobile phone in real time. Through the APP, users can be notified to view the relevant operating parameters of the solar air conditioner.

[0071] According to one embodiment of the present invention, the current operating parameters of the solar air conditioner include: the current power generation of the solar air conditioner, the current operating frequency of the compressor of the solar air conditioner, and the current temperature of the indoor unit coil of the solar air conditioner.

[0072] According to one embodiment of the present invention, the steps of operating a solar air conditioner in a hybrid power supply mode specifically include: acquiring the power supply of solar direct current; determining that the power supply of solar direct current has reached a target preset power level; and controlling the solar air conditioner to operate in a hybrid power supply mode.

[0073] Furthermore, if the power supplied by the solar DC power supply does not reach the target preset power supply to meet the power demand, the solar air conditioner will be controlled to operate in the mains power supply mode. In this mains power supply mode, if voltage fluctuations occur, when the AC bus voltage of the mains power supply exceeds the target preset value a certain number of times within a set time period, the solar air conditioner will be controlled to shut down directly to protect the solar air conditioner and prevent safety accidents.

[0074] This invention allows for real-time monitoring of the power supply of solar DC power, enabling the switching of the power supply mode of the solar air conditioner. Furthermore, when the power supply of solar DC power reaches the target preset level, the solar air conditioner is controlled to operate in a hybrid mode, achieving energy saving and effectively improving the user experience.

[0075] Reference Figure 5 As shown, the power supply control method for the solar air conditioner provided by the present invention will be described below with reference to a specific example, which generally includes:

[0076] (1) Control the solar air conditioner to operate in hybrid mode;

[0077] (2) Detect the AC bus voltage value in the hybrid mode and determine whether the AC bus voltage value is greater than or equal to the target preset value 3 times within 1 minute.

[0078] (3) If so, turn off the AC power supply and control the solar air conditioner to operate on solar DC power, and remind the user of the current operating status in the mobile APP;

[0079] (4) If not, control the solar air conditioner to continue operating in hybrid mode.

[0080] The power supply control device for the solar air conditioner provided by the present invention is described below. The power supply control device for the solar air conditioner described below can be referred to in correspondence with the power supply control method for the solar air conditioner described above.

[0081] According to an embodiment of the second aspect of the present invention, referring to Figure 6As shown, the present invention also provides a power supply control device for a solar air conditioner, mainly comprising: an acquisition module 610 and a control module 620. The acquisition module 610 is used to acquire the AC bus voltage value of the mains power in the hybrid power supply mode when the solar air conditioner is operating in hybrid power supply mode; the control module 620 is used to determine that the AC bus voltage value of the mains power is greater than or equal to a target preset value, control the mains power in the hybrid power supply mode to be turned off, and control the air conditioner to operate with solar DC power supply in the hybrid power supply mode.

[0082] The power supply control device for the solar air conditioner provided in this embodiment of the invention, through the acquisition module 610 and the control module 620, operates in a hybrid mode powered by solar DC power. This can avoid voltage surges to the air conditioner caused by insufficient mains power supply or unstable mains voltage fluctuations in the energy-saving hybrid mode, thereby protecting the air conditioner. Furthermore, the solar DC power can ensure power supply needs as much as possible, improving the user experience.

[0083] According to one embodiment of the present invention, the acquisition module 610 is further configured to acquire the number of times the AC bus voltage value of the mains power is greater than or equal to a target preset value within a set time period; if the number of times the AC bus voltage value of the mains power is greater than or equal to the target preset value within the set time period reaches the target preset number, the control module 620 is configured to control the mains power in the hybrid mode to be turned off, and to operate with solar DC power in the hybrid mode, effectively improving the control accuracy of the power supply mode and protecting the solar air conditioner; if the number of times the AC bus voltage value of the mains power is greater than or equal to the target preset value within the set time period does not reach the target preset number, the control module 620 is configured to control the solar air conditioner to operate with power in the hybrid mode, achieving the purpose of energy saving and environmental protection, thereby improving the user experience.

[0084] According to an embodiment of the third aspect of the present invention, the present invention also provides an air conditioner, comprising: a power supply control device for a solar air conditioner according to any of the above embodiments, or, when performing power supply control, employing a power supply control method for a solar air conditioner according to any of the above embodiments.

[0085] Since the air conditioner of this embodiment includes the power supply control device or control method of the solar air conditioner of any of the above embodiments, it has all the technical effects of the power supply control device or control method of the solar air conditioner of any of the above embodiments, which will not be elaborated here.

[0086] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A power supply control method for a solar-powered air conditioner, characterized in that, include: When the solar air conditioner is operating in hybrid power mode, the AC bus voltage value of the mains power in the hybrid power mode is obtained. If the AC bus voltage of the mains power is determined to be greater than or equal to the target preset value, the mains power in the hybrid mode is turned off, and the system is powered by the solar DC power in the hybrid mode. The steps for controlling the mains power shutdown in the hybrid mode specifically include: The mains power supply in the hybrid mode is controlled to decrease to a first preset power value at a first preset rate and continue to operate for a first preset duration; After running for the first preset duration, the mains power supply in the hybrid mode is controlled to decrease to the second preset power value at a second preset rate, and then continues to run for the second preset duration. After the second preset duration of operation, the mains power supply in the hybrid mode is controlled to decrease to zero at a third preset rate; Wherein, the first preset rate is less than the second preset rate, the second preset rate is less than the third preset rate, and the first preset duration is greater than the second preset duration; The steps of controlling the solar air conditioner to operate in the hybrid mode powered by solar DC electricity specifically include: During the process of the mains power supply power in the hybrid mode decreasing to the first preset power value, the solar DC power supply current in the hybrid mode is controlled to increase to the first preset current value at a fourth preset rate, and continues to operate for the first preset duration. During the process of the mains power supply in the hybrid mode decreasing from the first preset power value to the second preset power value, the solar DC power supply current in the hybrid mode is controlled to increase to the second preset current value at a fifth preset rate and continue to operate for the second preset duration. During the process of the mains power supply in the hybrid mode decreasing from the second preset power value to zero, the solar DC power supply current in the hybrid mode is controlled to increase to the maximum current value at a sixth preset rate; Wherein, the fourth preset rate is less than the fifth preset rate, the fifth preset rate is less than the sixth preset rate; the first preset current value is less than the second preset current value, and the second preset current value is less than the maximum current value.

2. The power supply control method for a solar air conditioner according to claim 1, characterized in that, The steps of determining that the AC bus voltage of the mains power is greater than or equal to a target preset value, controlling the mains power to be shut off in the hybrid mode, and operating with the solar DC power supply in the hybrid mode specifically include: The number of times the AC bus voltage value of the mains power is greater than or equal to the target preset value within a set time period is obtained; If the AC bus voltage of the mains power reaches the target preset value a certain number of times within the set time period, the mains power in the hybrid mode is shut off, and the system operates with solar DC power in the hybrid mode.

3. The power supply control method for a solar air conditioner according to claim 2, characterized in that, After the step of obtaining the number of times the AC bus voltage value of the mains power is greater than or equal to the target preset value within a set time period, the method further includes the following step: If the number of times the AC bus voltage of the mains power is greater than or equal to the target preset value within the set time period does not reach the target preset number, the solar air conditioner is controlled to operate in the hybrid mode.

4. The power supply control method for a solar air conditioner according to any one of claims 1-3, characterized in that, When the solar air conditioner is operating with solar DC power in the hybrid mode, the method further includes the following steps: Obtain the current operating parameters of the solar air conditioner; The current operating parameters of the solar air conditioner are sent to the user terminal as a reminder.

5. The power supply control method for a solar air conditioner according to claim 4, characterized in that, The current operating parameters of the solar air conditioner include: the current power generation of the solar air conditioner, the current operating frequency of the compressor of the solar air conditioner, and the current temperature of the indoor unit coil of the solar air conditioner.

6. The power supply control method for a solar air conditioner according to any one of claims 1-3, characterized in that, The steps for the solar air conditioner to operate in hybrid power mode specifically include: Obtain the power supplied by the solar DC power; Once the power supply of the solar DC power reaches the target preset power level, the solar air conditioner is controlled to operate in a hybrid power supply mode.

7. A power supply control device for a solar air conditioner, characterized in that, include: The acquisition module is used to acquire the AC bus voltage value of the mains power in the hybrid power supply mode when the solar air conditioner is operating in the hybrid power supply mode. The control module is used to determine that the AC bus voltage of the mains power is greater than or equal to the target preset value, control the mains power in the hybrid mode to be turned off, and operate with the solar DC power in the hybrid mode. The steps for controlling the mains power shutdown in the hybrid mode specifically include: The mains power supply in the hybrid mode is controlled to decrease to a first preset power value at a first preset rate and continue to operate for a first preset duration; After running for the first preset duration, the mains power supply in the hybrid mode is controlled to decrease to the second preset power value at a second preset rate, and then continues to run for the second preset duration. After the second preset duration of operation, the mains power supply in the hybrid mode is controlled to decrease to zero at a third preset rate; Wherein, the first preset rate is less than the second preset rate, the second preset rate is less than the third preset rate, and the first preset duration is greater than the second preset duration; The steps of controlling the solar air conditioner to operate in the hybrid mode powered by solar DC electricity specifically include: During the process of the mains power supply power in the hybrid mode decreasing to the first preset power value, the solar DC power supply current in the hybrid mode is controlled to increase to the first preset current value at a fourth preset rate, and continues to operate for the first preset duration. During the process of the mains power supply in the hybrid mode decreasing from the first preset power value to the second preset power value, the solar DC power supply current in the hybrid mode is controlled to increase to the second preset current value at a fifth preset rate and continue to operate for the second preset duration. During the process of the mains power supply in the hybrid mode decreasing from the second preset power value to zero, the solar DC power supply current in the hybrid mode is controlled to increase to the maximum current value at a sixth preset rate; Wherein, the fourth preset rate is less than the fifth preset rate, the fifth preset rate is less than the sixth preset rate; the first preset current value is less than the second preset current value, and the second preset current value is less than the maximum current value.

8. An air conditioner, characterized in that, include: The power supply control device for the solar air conditioner according to claim 7, or when performing power supply control, the power supply control method for the solar air conditioner according to any one of claims 1-6 above.

Images