Multi-connected air conditioning system control method, device, system and storage medium

Abstract

The application relates to the technical field of electrical appliances, and particularly discloses a multi-connected air conditioner system control method, device, system and storage medium, which is applied to a multi-connected air conditioner system comprising a photovoltaic air conditioner unit and a non-photovoltaic air conditioner unit, and comprises the following steps: firstly detecting an electricity demand; when it is determined that power-off energy saving is needed, stopping mains power supply for the non-photovoltaic air conditioner unit; and providing weak current for the non-photovoltaic air conditioner unit through the photovoltaic air conditioner unit, so that target components in the non-photovoltaic air conditioner unit are in a controllable state. In this way, when power supply needs to be limited, the mains power supply can be actively disconnected and stopped, and weak current supply is provided for the non-photovoltaic air conditioner unit through the photovoltaic air conditioner unit, so that the components in the non-photovoltaic air conditioner unit are still in a controllable state after the mains power supply is disconnected, and the system safety and stability are ensured.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of electrical appliances, and in particular to a multi-split air conditioning system control method, device, system and storage medium. BACKGROUND

[0002] According to the building energy consumption statistics, the power consumption of air conditioners accounts for almost one-third of the entire power system power consumption, and photovoltaic air conditioners can greatly reduce the consumption of traditional power such as mains power by using photovoltaic panels to generate power for their own operation. However, due to the high cost of photovoltaic air conditioners, the cost of pure photovoltaic module combination is high, and the application occasions are limited, so it is difficult to achieve its economic effect. Therefore, the mixed mode of photovoltaic units and non-photovoltaic units, that is, the photovoltaic panel provides power for the photovoltaic unit, and the mains power provides power for the non-photovoltaic unit, is widely used.

[0003] However, in actual application, because the power supply sources of photovoltaic air conditioner units and non-photovoltaic air conditioner units are different, when some need to switch or partially close the power supply source, such as after the mains power supply is closed based on the power limitation policy, the internal components such as the throttling component of the non-photovoltaic air conditioner unit cannot be controlled, which easily causes the safety and stability of the entire system. SUMMARY

[0004] Therefore, the purpose of the present application is to provide a multi-split air conditioning system control method, device, system and storage medium to at least overcome the above technical problems.

[0005] To achieve the above purpose, the present application adopts the following technical solutions:

[0006] In a first aspect, the present application provides a multi-split air conditioning system control method applied to a multi-split air conditioning system including a photovoltaic air conditioner unit and a non-photovoltaic air conditioner unit, comprising:

[0007] determining a power demand, the power demand including power-off energy saving;

[0008] when the power demand is power-off energy saving, stopping the mains power supply for the non-photovoltaic air conditioner unit;

[0009] and providing weak current for the non-photovoltaic unit through the photovoltaic air conditioner unit, so that the target component in the non-photovoltaic air conditioner unit is in a controllable state.

[0010] Further, receiving a power-saving instruction or a recovery instruction;

[0011] when the power-saving instruction is received, determining that the power demand is power-off energy saving;

[0012] when the recovery instruction is received, determining that the power demand is normal power supply.

[0013] Further, further comprising:

[0014] When the power demand is normal power supply, stop providing weak electricity to the non-photovoltaic air conditioning unit by the photovoltaic air conditioning unit;

[0015] And supply electricity to the non-photovoltaic air conditioning unit through the preset mains power supply module.

[0016] Further, further comprising:

[0017] The power supply mode of the non-photovoltaic air conditioning unit, and / or the power supply mode switching state of the non-photovoltaic air conditioning unit is sent to a preset overall management module for the preset overall management module to control the state of the target component in the non-photovoltaic air conditioning unit;

[0018] Among them, the real-time power supply mode includes mains power supply mode and photovoltaic air conditioning unit power supply mode.

[0019] Further, the target component in the non-photovoltaic air conditioning component includes a throttling component.

[0020] In a second aspect, the embodiments of the present application provide a multi-connected air conditioning system, comprising: a control module, a first switch and a second switch;

[0021] The control module is connected with the first switch, the second switch and a preset non-photovoltaic air conditioning unit respectively; the first switch is also connected with a preset mains power supply module, and the second switch is also connected with a preset photovoltaic air conditioning unit;

[0022] The control module is used for detecting power demand;

[0023] The control module is also used for when the power demand is power-off energy saving, disconnecting the first switch to stop the preset mains power supply module from supplying electricity to the preset non-photovoltaic air conditioning unit; and turning on the second switch to supply weak electricity to the preset non-photovoltaic air conditioning unit through the preset photovoltaic air conditioning unit, so that the target component in the preset non-photovoltaic air conditioning unit is in a controllable state.

[0024] Further, further comprising a communication module connected with the control module;

[0025] The communication module is used for obtaining a control instruction for the control module to determine power demand;

[0026] The communication module is also used for sending the power supply mode of the preset non-photovoltaic air conditioning unit, and / or the power supply mode switching state of the preset non-photovoltaic air conditioning unit to a preset overall management module for the preset overall management module to control the state of the target component in the non-photovoltaic air conditioning unit;

[0027] The real-time power supply mode includes a mains power supply mode and a photovoltaic air conditioning unit power supply mode

[0028] Further, the control module is further configured to, before the first switch is disconnected, turn off a high-power load of the preset non-photovoltaic air conditioning unit.

[0029] In a third aspect, the embodiments of the present application further provide a multi-split air conditioning system, comprising at least one photovoltaic air conditioning unit and at least one non-photovoltaic air conditioning unit.

[0030] Each of the non-photovoltaic air conditioning units is connected to the photovoltaic air conditioning unit and the mains power supply module through the multi-split air conditioning system control device as described above.

[0031] In a fourth aspect, the embodiments of the present application further provide a storage medium, which stores a computer program. When the computer program is run by a processor, the multi-split air conditioning system control method as described above is executed.

[0032] The multi-split air conditioning system control method provided by the present application is applied to a multi-split air conditioning system comprising a photovoltaic air conditioning unit and a non-photovoltaic air conditioning unit, and comprises the following steps: first detecting the power demand; when it is determined that power-off energy saving is needed, stopping the mains power supply to the non-photovoltaic air conditioning unit; and providing weak current to the non-photovoltaic air conditioning unit through the photovoltaic air conditioning unit, so that the target components in the non-photovoltaic air conditioning unit are in a controllable state. In this way, when power saving is needed, the mains power supply can be actively disconnected and stopped, and weak current can be supplied to the non-photovoltaic air conditioning unit through the photovoltaic air conditioning unit, so that the components in the non-photovoltaic air conditioning unit are still in a controllable state after the mains power supply is disconnected, thereby ensuring the safety and stability of the system. BRIEF DESCRIPTION OF DRAWINGS

[0033] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without any creative effort on the basis of these drawings.

[0034] Figure 1 The flowchart of the multi-split air conditioning system control method provided by the embodiments of the present application;

[0035] Figure 2 The structural schematic diagram of the multi-split air conditioning system control device provided by the embodiments of the present application;

[0036] Figure 3 The structural schematic diagram of the multi-split air conditioning system control device provided by another embodiment of the present application;

[0037] Figure 4 A structure schematic diagram of a multi-split air conditioning system according to an embodiment of the present application is provided. DETAILED DESCRIPTION

[0038] In order to make the objects, technical solutions and advantages of the present application clearer, the technical solutions of the present application will be described in detail below. Obviously, the described embodiments are only some of the embodiments of the present application, but not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of the present application.

[0039] Method embodiments:

[0040] Figure 1 A flowchart of a control method of a multi-split air conditioning system according to an embodiment of the present application is provided, which can at least include: Figure 1

[0041] S101, detecting a power demand.

[0042] Specifically, in some cases, the power demand needs to be controlled, such as power-off energy-saving, including power-off according to local policy or energy-saving demand determined by the user.

[0043] In some embodiments, the power demand can be determined by receiving a power-off energy-saving instruction input by the user or triggered automatically by a program, such as determining the power demand as needing power-off energy-saving after receiving the power-off energy-saving instruction, and determining as normal power supply, i.e. power supply by the mains, after not receiving the power-off energy-saving instruction or receiving a recovery instruction to restore the mains supply after receiving the power-off energy-saving instruction.

[0044] S102, stopping the mains from supplying power to the non-photovoltaic air conditioning unit when power-off energy-saving is needed.

[0045] In a multi-split air conditioning system including photovoltaic air conditioning units (including photovoltaic outdoor units and photovoltaic indoor units) and non-photovoltaic air conditioning units (including non-photovoltaic outdoor units and non-photovoltaic indoor units), i.e. a system with mixed combination of photovoltaic air conditioning units and non-photovoltaic air conditioning units, although the photovoltaic air conditioning units and the non-photovoltaic air conditioning units are in the same refrigeration system, the photovoltaic air conditioning units are generally not changed in operation state and power supply mode during energy-saving because they are powered by external photovoltaic panels; and the non-photovoltaic air conditioning units are powered by the mains, so in the above system, the measures to respond to the mains power-off and energy-saving are generally to disconnect the mains supply of the non-photovoltaic air conditioning units and stop the mains from supplying power to the non-photovoltaic air conditioning units.

[0046] ​S103, providing weak electricity for the non-photovoltaic air conditioning unit by the photovoltaic air conditioning unit, so that the target component in the non-photovoltaic air conditioning unit is in a controllable state.

[0047] Because the photovoltaic air conditioning unit and the non-photovoltaic air conditioning unit are connected to the same refrigeration system, the multi-split air conditioner is used as a distributed refrigerant control system, and if the throttling devices of all air conditioning units such as indoor units and outdoor units cannot be in a controllable state at the same time, it may cause the refrigeration system to run abnormally, affecting the safety and stability of the system.

[0048] In the present application, the photovoltaic air conditioning unit can reversibly generate a photovoltaic direct-current bus voltage by using the connected photovoltaic panel. Two types of buses can be formed inside the photovoltaic air conditioning unit, i.e. a high-voltage bus and a low-voltage bus. The high-voltage bus can drive the compressor and the outdoor fan of the photovoltaic air conditioning unit to operate, and the low-voltage bus can supply power to the control panel and the electromagnetic valve of the photovoltaic air conditioning unit.

[0049] When it is necessary to power off the non-photovoltaic air conditioning unit for energy saving, the power supply of the non-photovoltaic air conditioning unit is disconnected, and then weak electricity is provided for the non-photovoltaic air conditioning unit through the low-voltage bus of the photovoltaic air conditioning unit, so that the target components in the non-photovoltaic air conditioning unit such as the control panel and the throttling components such as the electronic expansion valve are in a controllable state. Therefore, after the non-photovoltaic air conditioning unit stops being supplied with commercial power, the throttling components and the like are still in a powered and controllable state, and corresponding operations can be performed to make the refrigerant distribution and throttling control of the control system reasonable.

[0050] The multi-split air conditioner system control method provided by the present application is applied to a multi-split air conditioner system including a photovoltaic air conditioning unit and a non-photovoltaic air conditioning unit, and includes the following steps: first, detecting the power demand; when it is determined that power-off energy saving is needed, stopping the commercial power supply for the non-photovoltaic air conditioning unit; and providing weak electricity for the non-photovoltaic air conditioning unit by the photovoltaic air conditioning unit, so that the target component in the non-photovoltaic air conditioning unit is in a controllable state. In this way, when power needs to be limited, the commercial power supply can be actively disconnected, and weak electricity can be supplied to the non-photovoltaic air conditioning unit by the photovoltaic air conditioning unit, so that the components in the non-photovoltaic air conditioning unit are still in a controllable state after the commercial power supply is disconnected, thereby ensuring the safety and stability of the system.

[0051] In some embodiments, the multi-split air conditioner system control method provided by the present application further includes receiving a recovery instruction, and when the recovery instruction is received, it is determined that power-off energy saving is not needed for the non-photovoltaic air conditioning unit, and the corresponding power supply mode switching is performed.

[0052] Specifically, after receiving the recovery instruction or after exceeding the preset time period after receiving the energy-saving instruction, it is determined that power-off energy saving is not required. At this time, if the current power supply mode of the non-photovoltaic air conditioning unit is to be powered by the photovoltaic air conditioning unit, the power supply mode of the non-photovoltaic air conditioning unit needs to be switched to mains power supply. At this time, the mains power supply to the non-photovoltaic air conditioning unit can be connected first, and then the power supply of the photovoltaic air conditioning unit to the non-photovoltaic air conditioning unit can be stopped.

[0053] In some embodiments, the above-mentioned switching of the power supply mode can be completed by a related control signal, for example, by a relay or a module with integrated switching function to realize the connection of the non-photovoltaic air conditioning unit with the photovoltaic air conditioning unit and the mains power supply module. When the switching of the power supply mode is required, a control signal is sent to disconnect or conduct the relay or the module with integrated switching function, so as to realize the switching of the power supply mode of the non-photovoltaic air conditioning unit between the mains power supply and the photovoltaic air conditioning unit power supply.

[0054] It should be noted that in the above-mentioned embodiments, because the weak power supply power provided by the photovoltaic air conditioning unit for the non-photovoltaic air conditioning unit is limited and cannot meet the operation of large load components such as the fan of the non-photovoltaic air conditioning unit, the fan compressor of the non-photovoltaic air conditioning unit can be actively turned off before switching from mains power supply to photovoltaic air conditioning unit power supply, so as to ensure the safe operation of the non-photovoltaic air conditioning unit.

[0055] In some embodiments, a unified management module for coordinating the whole system can be provided for the multi-connected air conditioning system to uniformly manage the throttling components of all units. The unified management module can be a separate controller or a control panel of an air conditioning unit. For example, a main control outdoor unit (which can be a photovoltaic outdoor unit of a photovoltaic air conditioning unit or a non-photovoltaic air conditioning unit) can be provided as a unified management module for unified control. In the case that the components in the non-photovoltaic air conditioning unit are in a controlled state after the mains power supply is disconnected, the refrigerant distribution and throttling control can be performed to ensure the safety and stability of the system.

[0056] On the basis of the above-mentioned embodiments, the power supply mode of the non-photovoltaic air conditioning unit and / or the power supply mode switching state can be sent to a preset unified management module. For example, after the non-photovoltaic air conditioning unit is switched from mains power supply to photovoltaic air conditioning unit weak power supply, and after the non-photovoltaic air conditioning unit is switched from photovoltaic air conditioning unit weak power supply to mains power supply, information about whether the switching is successful or not can be sent to the unified management module for subsequent unified management by the unified management module.

[0057] Device embodiments:

[0058] Based on the same inventive concept, the application also provides a multi-connected air conditioning system control device applied to a multi-connected air conditioning system including a photovoltaic air conditioning unit and a non-photovoltaic air conditioning unit, wherein the photovoltaic air conditioning unit obtains electric energy by connecting a photovoltaic panel, and the non-photovoltaic air conditioning unit obtains electric energy by connecting a power supply module, and the device comprises a control module 1, a first switch 2 and a second switch 3. Figure 2 The device comprises a control module 1, a first switch 2 and a second switch 3.

[0059] The control module 1 is connected with the first switch 2, the second switch 3 and the non-photovoltaic air conditioning unit respectively; the first switch 2 is further connected with a preset power supply module, and the second switch 3 is further connected with a preset photovoltaic air conditioning unit. The control module 1 is used for detecting the power demand.

[0060] Specifically, the control module 1 can be a separate hardware or an existing control hardware in the multi-connected air conditioning system, such as a control board in the non-photovoltaic air conditioning unit. The first switch 2 and the second switch 3 can be separate relays or modules with integrated switch functions. The control module 1 determines the power demand according to the instructions received from the multi-connected air conditioning system. For example, after receiving a power-off energy-saving instruction, it is determined that power-off energy-saving is required; after receiving a recovery instruction, it is determined that power-off energy-saving is not required.

[0061] The first switch 2 is connected with the power supply (such as a power supply module or a power supply module), the control module and the non-photovoltaic air conditioning unit (including an outdoor unit and an indoor unit) respectively, and is used for conducting the connection between the non-photovoltaic air conditioning unit and the power supply under the control of the control module 1, that is, controlling whether the power supply supplies power to the non-photovoltaic air conditioning unit; the second switch 3 is connected with the photovoltaic air conditioning unit (which can be an outdoor unit with electric energy), the control module and the non-photovoltaic air conditioning unit (including an outdoor unit and an indoor unit) respectively, and is used for conducting the connection between the non-photovoltaic air conditioning unit and the photovoltaic air conditioning unit under the control of the control module 1, that is, controlling whether the photovoltaic air conditioning unit supplies power to the non-photovoltaic air conditioning unit.

[0062] When power-off energy-saving is required, the control module 1 disconnects the first switch 2 to stop the power supply of the preset non-photovoltaic air conditioning unit by the power supply, and conducts the second switch 3 to provide weak current for the preset non-photovoltaic unit through the preset photovoltaic air conditioning unit, so that the target components in the preset non-photovoltaic air conditioning unit are in a controllable state, thereby ensuring that the components in the non-photovoltaic air conditioning unit, such as the throttling electromagnetic valve, are in a controllable state, so that subsequent refrigerant distribution and throttling control are carried out based on actual demand, and the safety and stability of the multi-connected air conditioning system are ensured.

[0063] When power-off energy-saving is not required, the control module 1 controls the first switch 2 to be conducted and the second switch 3 to be disconnected, so that the power supply mode of the non-photovoltaic air conditioning unit is switched from the photovoltaic air conditioning unit to the power supply, and subsequent operation of large loads such as fans in the non-photovoltaic air conditioning unit is ensured according to the demand.

[0064] Further, in some embodiments, the multi-connected air conditioning system control device can also include a communication module 4, through which the control module 1 determines the power demand by receiving the instructions sent by the multi-connected air conditioning system; and sends the power supply mode and switching information of the non-photovoltaic air conditioning unit to the overall management module such as the main control outdoor unit, so that the main control outdoor unit makes overall control based on the power supply state of the non-photovoltaic air conditioning unit, and reasonably allocates the overall refrigerant and reasonably controls the throttling.

[0065] In other embodiments, the multi-connected air conditioning system control device can also achieve the functions of the above-mentioned communication module by connecting a pre-set communication module, thereby reducing the size of the device and increasing the flexibility of the device.

[0066] Figure 3 The structure diagram of the multi-connected air conditioning system control device provided for another embodiment of the present application is shown in Figure 3 The non-photovoltaic air conditioning control board can be used as the control module 1, the power module as the first switch 2, the relay K1 as the second switch 3, the communication module such as the communication line to realize the communication between the indoor and outdoor units and the main control outdoor unit, and the related current and voltage conversion devices or modules are set.

[0067] Specifically, when the non-photovoltaic air conditioning control board receives the power-off and power-saving instruction through the communication module, it needs to stop the power supply of the ordinary air conditioner, so that the ordinary air conditioner immediately enters the energy-saving mode, which specifically includes: the non-photovoltaic air conditioning control board first stops the operation of high-power loads such as the indoor fan FAN (M in the figure), and then sends a ctrl3 signal to K1 to make the circuit between the non-photovoltaic air conditioning unit and the photovoltaic air conditioning unit conductive, so as to provide weak current for the non-photovoltaic air conditioning unit through the photovoltaic air conditioning unit; and immediately sends a ctrl2 signal to the power module in the power supply circuit such as Figure 3 After the waiting time t1, the main control outdoor unit is informed that the non-photovoltaic air conditioning unit has completed the switching of power supply, so that the main control outdoor unit or under the control of the main control outdoor unit adjusts the electronic expansion valve and other throttling devices according to the demand of the refrigerant control system, to ensure the normal operation of the system.

[0068] When the non-photovoltaic air conditioning control board receives the recovery instruction through the communication module, it needs to restore the normal power supply of the non-photovoltaic air conditioning unit. At this time, according to the same principle as above, the non-photovoltaic air conditioning control board sends a ctrl2 signal to the power supply circuit to restore the power supply of the power module; and sends a ctrl3 signal to K1 to cut off the photovoltaic weak current power supply switch K1. After the waiting time t2, the main control outdoor unit is informed that the non-photovoltaic outdoor unit has completed the switching of power supply, and the non-photovoltaic air conditioning unit is out of the energy-saving mode and resumes normal operation. At this time, the indoor load of the non-photovoltaic air conditioner can operate normally according to the actual demand.

[0069] Further, because a multi-connected air conditioning system generally includes multiple photovoltaic air conditioning units and non-photovoltaic air conditioning units, i.e., multiple light-emitting outdoor units, multiple photovoltaic indoor units, multiple ordinary outdoor units, and multiple ordinary indoor units. In order to improve control accuracy, a multi-connected air conditioning system control device mentioned above can be provided for each ordinary indoor unit and ordinary outdoor unit, thereby independently controlling the power supply mode of each ordinary outdoor unit and ordinary indoor unit, and at the same time, each ordinary indoor unit and ordinary outdoor unit is connected to the overall management module through a communication line to realize accurate control, further improving the safety and stability of the multi-connected air conditioning system. As shown in Figure 4 Figure 4 The only photovoltaic outdoor unit in the above-mentioned multi-connected air conditioning system control device is the master control outdoor unit, i.e., the overall management module.

[0070] Further, the above-mentioned multi-connected air conditioning system control device can also be provided inside each ordinary indoor unit and ordinary outdoor unit. Only relevant interfaces and lines are needed to achieve the above-mentioned connection, thereby improving the practicality of the multi-connected air conditioning system.

[0071] Of course, in some embodiments, all ordinary indoor units and ordinary outdoor units can be connected to a multi-connected air conditioning system control device to realize connection with the power grid and photovoltaic air conditioning units, thereby greatly reducing system cost.

[0072] System embodiments:

[0073] Based on the same inventive concept, the application also provides a multi-connected air conditioning system, which can include photovoltaic air conditioning units and non-photovoltaic air conditioning units. The photovoltaic air conditioning units include multiple photovoltaic outdoor units and multiple photovoltaic indoor units, and the non-photovoltaic air conditioning units include multiple ordinary outdoor units and multiple ordinary indoor units.

[0074] Each ordinary indoor unit and ordinary outdoor unit is connected to the photovoltaic air conditioning unit (including photovoltaic outdoor units and / or photovoltaic indoor units) and the power grid through a multi-connected air conditioning system control device provided in each of the above-mentioned device embodiments, or each ordinary indoor unit and ordinary outdoor unit is connected to the photovoltaic air conditioning unit (including photovoltaic outdoor units and / or photovoltaic indoor units) and the power grid through a multi-connected air conditioning system control device. When power needs to be cut off for energy saving, the power grid stops supplying power to the ordinary indoor unit and the ordinary outdoor unit, and the photovoltaic air conditioning unit (including photovoltaic outdoor units and / or photovoltaic indoor units) provides weak current, thereby ensuring that the components in the ordinary indoor unit and the ordinary outdoor unit are still controllable after the power supply is disconnected, realizing subsequent refrigerant distribution and throttling control, and ensuring the safety and stability of the multi-connected air conditioning system.

[0075] ​The multi-split air conditioning system provided by the application can fully utilize the power supply of the photovoltaic air conditioner, and can realize the mixed operation of the ordinary air conditioner and the photovoltaic air conditioner by actively accepting power-off energy-saving instructions and performing energy-saving management, so that the components such as the throttling component in the ordinary indoor unit and the ordinary outdoor unit can be controlled and managed in the case of power failure, and the safety and stability of the multi-split air conditioning system are greatly improved, thereby improving the market adaptability of the photovoltaic air conditioner.

[0076] It can be understood that the same or similar parts in the above embodiments can be mutually referred to, and the contents not described in detail in some embodiments can be referred to the same or similar contents in other embodiments.

[0077] System embodiments:

[0078] Based on the same inventive concept, the application further provides a storage medium, and the storage medium stores a computer program. When the computer program is run by a processor, the control method of the multi-split air conditioning system is executed. It can be understood that the same or similar parts in the above embodiments can be mutually referred to, and the contents not described in detail in some embodiments can be referred to the same or similar contents in other embodiments.

[0079] It should be noted that in the description of the application, the terms "first", "second", etc. are only for the purpose of description, and cannot be understood as indicating or implying relative importance. In addition, in the description of the application, unless otherwise specified, the meaning of "a plurality of" is at least two.

[0080] Any process or method descriptions in flow charts or described elsewhere herein can be understood as representing code modules, segments, or portions of code which include one or more executable instructions for performing specific logic functions or steps in the process, and that the various systems described herein can include one or more circuits that include the various hardware elements of the described systems, and that these circuits can implement one or more processes or methods described herein. The various processes depicted in the figures can be understood as methods, and the various components depicted in the figures can be understood as modules, segments, or portions of code.

[0081] It should be understood that the parts of the application can be realized by hardware, software, firmware or their combination. In the above embodiments, the plurality of steps or methods can be realized by software or firmware stored in the memory and executed by the appropriate instruction execution system. For example, if realized by hardware, and as in another embodiment, it can be realized by any one or their combination of the following technologies known in the art: discrete logic circuit with logic gate circuit for implementing logic function on data signal, application specific integrated circuit with appropriate combination logic gate circuit, programmable gate array (PGA), field programmable gate array (FPGA) and the like.

[0082] Those skilled in the art can understand that all or part of the steps of the method carried out by the above-mentioned embodiments can be instructed by a program to the relevant hardware, and the program can be stored in a computer readable storage medium. When the program is executed, it includes one of the steps of the method embodiment or a combination thereof.

[0083] In addition, each functional unit in each embodiment of the present application can be integrated into one processing module, or each unit can exist physically independently, or two or more units can be integrated into one module. The integrated module can be realized in the form of hardware or in the form of a software functional module. When the integrated module is realized in the form of a software functional module and sold or used as an independent product, it can also be stored in a computer readable storage medium.

[0084] The storage medium mentioned above can be a read-only memory, a magnetic disk or an optical disk, etc.

[0085] In the description of the present specification, the description of the terms "one embodiment", "some embodiments", "an example", "a specific example" or "some examples" means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the illustrative description of the above terms does not necessarily mean the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0086] Although the embodiments of the present application have been shown and described above, it can be understood that the above-mentioned embodiments are exemplary and cannot be understood as limiting the present application. Those skilled in the art can make changes, modifications, replacements and variations to the above-mentioned embodiments within the scope of the present application.

Claims

1. A multi-split air conditioning system control method, characterized in that: Applicable to multi-split air conditioning systems including photovoltaic air conditioning units and non-photovoltaic air conditioning units, including: Determining electricity demand, including power-off energy conservation; When the power demand is to cut off power for energy saving, the utility power is stopped to supply power to the non-photovoltaic air-conditioning unit; and providing weak electricity to the non-photovoltaic air-conditioning unit through the photovoltaic air-conditioning unit, so that the target components in the non-photovoltaic air-conditioning unit are in a controllable state; Among them, the target components in the non-photovoltaic air-conditioning unit include a throttling component; the photovoltaic air-conditioning unit and the non-photovoltaic air-conditioning unit are connected to the same refrigeration system.

2. The multi-split air conditioning system control method according to claim 1, characterized in that: Determining the electricity demand includes: Receive power-limiting and energy-saving instructions or recovery instructions; Upon receiving the power-off energy-saving instruction, determining that the power demand is power-off energy-saving; When the restoration instruction is received, it is determined that the power demand is normal power supply.

3. The multi-split air conditioning system control method according to claim 2, characterized in that: Also includes: When the power demand is normal power supply, stop providing weak power to the non-photovoltaic air-conditioning unit through the photovoltaic air-conditioning unit; The non-photovoltaic air-conditioning unit is powered by a preset mains power supply module.

4. The multi-split air conditioning system control method according to claim 1, characterized in that: Also includes: Sending the power supply mode of the non-photovoltaic air-conditioning unit and / or the power supply mode switching state of the non-photovoltaic air-conditioning unit to a preset overall management module for the preset overall management module to control the state of a target component in the non-photovoltaic air-conditioning unit; The power supply mode includes a mains power supply mode and a photovoltaic air conditioning unit power supply mode.

5. A multi-connected air conditioning system control device, characterized in that: include: a control module, a first switch and a second switch; The control module is connected to the first switch, the second switch and the preset non-photovoltaic air-conditioning unit respectively; the first switch is also connected to the preset mains power supply module, and the second switch is also connected to the preset photovoltaic air-conditioning unit; The control module is used to detect power demand; The control module is further configured to, when the power demand is power-off energy saving, disconnect the first switch to stop the preset mains power supply module from supplying power to the preset non-photovoltaic air-conditioning unit; and connect the second switch to provide weak power to the preset non-photovoltaic air-conditioning unit through the preset photovoltaic air-conditioning unit, so that the target component in the preset non-photovoltaic air-conditioning unit is in a controllable state; Among them, the target components in the non-photovoltaic air-conditioning unit include a throttling component; the photovoltaic air-conditioning unit and the non-photovoltaic air-conditioning unit are connected to the same refrigeration system.

6. The multi-split air conditioning system control device according to claim 5, characterized in that: Also included is a communication module connected to the control module; The communication module is used to obtain control instructions for the control module to determine the power demand; The communication module is further configured to send the power supply mode of the preset non-photovoltaic air-conditioning unit and / or the power supply mode switching state of the preset non-photovoltaic air-conditioning unit to the preset overall management module, so that the preset overall management module can control the state of the target component in the non-photovoltaic air-conditioning unit; The power supply mode includes a mains power supply mode and a photovoltaic air conditioning unit power supply mode.

7. The multi-split air conditioning system control device according to claim 5, characterized in that: The control module is further configured to, before disconnecting the first switch, shut down the high-power load of the preset non-photovoltaic air-conditioning unit.

8. A multi-split air conditioning system, characterized in that: include: at least one photovoltaic air conditioning unit and at least one non-photovoltaic air conditioning unit; Each of the non-photovoltaic air-conditioning units is connected to the photovoltaic air-conditioning unit and the mains power supply module respectively through the multi-connected air-conditioning system control device as described in any one of claims 5 to 7.

9. A storage medium, characterized in that: The storage medium stores a computer program, and when the computer program is executed by the processor, the computer program executes the multi-split air conditioning system control method according to any one of claims 1 to 4.

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