Control method, control device, air conditioner and storage medium

Abstract

The application discloses a control method, a control device, an air conditioner and a storage medium, and relates to the technical field of air conditioners, and in particular relates to a control method, a control device, an air conditioner and a storage medium. The control method comprises the following steps: when an external environment temperature is greater than or equal to a preset temperature, acquiring suction pressure of a compressor of an air conditioner, and determining whether an auxiliary heating opening condition is met according to the suction pressure and the external environment temperature; and when it is determined that the auxiliary heating opening condition is met, controlling an auxiliary heating device to be opened. According to the control method, whether the auxiliary heating device is opened is controlled according to the suction pressure and the external environment temperature, in fact, whether the auxiliary heating is opened is judged according to a liquid return condition of the compressor, and then the auxiliary heating can be timely opened, high energy consumption caused by over-opening of the auxiliary heating device is avoided, and the energy-saving effect is realized.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of air conditioning equipment, in particular to a control method, a control device, an air conditioner and a storage medium. BACKGROUND

[0002] Compared with conventional cooling and heating air conditioners, a single-cooling air conditioner cannot realize cooling function due to the absence of a reversing device inside, and most single-cooling air conditioner models on the market also do not have a gas-liquid separator, so that incomplete evaporation of refrigerant can cause a large amount of liquid refrigerant to enter the compressor and cause liquid knock phenomenon.

[0003] In order to prevent liquid knock phenomenon, an auxiliary heating belt is usually arranged at the suction end of the compressor to heat and evaporate the refrigerant entering the compressor, but the existing auxiliary heating belt is only controlled according to the suction temperature, and is often turned on when it does not need to be turned on, resulting in high energy consumption. SUMMARY

[0004] The main purpose of the embodiments of the present application is to provide a control method, a control device, an air conditioner and a storage medium, aiming at improving the technical problem of high energy consumption of the air conditioner due to the transitional opening of the auxiliary heating device in the prior art.

[0005] The embodiments of the present application provide a control method, comprising:

[0006] When the external environment temperature is greater than or equal to a preset temperature, the suction pressure of the compressor of the air conditioner is obtained, and it is determined whether the auxiliary heating opening condition is met according to the suction pressure and the external environment temperature;

[0007] When it is determined that the auxiliary heating opening condition is met, the auxiliary heating device is controlled to be turned on.

[0008] In some embodiments of the present application, the determination of whether the auxiliary heating opening condition is met according to the suction pressure and the external environment temperature comprises:

[0009] determining a first ratio of the suction pressure to the external environment temperature;

[0010] determining whether the suction pressure and the external environment temperature meet the auxiliary heating opening condition according to the first ratio and a first threshold value;

[0011] If the first ratio is greater than the first threshold value, it is determined that the auxiliary heating opening condition is met;

[0012] If the first ratio is less than or equal to the first threshold value, it is determined that the auxiliary heating opening condition is not met.

[0013] In some embodiments of the present application, before determining whether the auxiliary heating opening condition is met according to the first ratio and the first threshold, the control method further comprises:

[0014] determining the first threshold according to the external environment temperature.

[0015] In some embodiments of the present application, after determining that the auxiliary heating opening condition is met, the control method further comprises:

[0016] determining the heating power of the auxiliary heating device according to the first ratio.

[0017] In some embodiments of the present application, the determining the heating power of the auxiliary heating device according to the first ratio comprises:

[0018] after determining that the auxiliary heating opening condition is met, if the first ratio is greater than the first threshold and less than or equal to a second threshold, controlling the auxiliary heating device to operate at a low gear;

[0019] after determining that the auxiliary heating opening condition is met, if the first ratio is greater than the second threshold and less than or equal to a third threshold, controlling the auxiliary heating device to operate at a medium gear;

[0020] after determining that the auxiliary heating opening condition is met, if the first ratio is greater than the third threshold, controlling the auxiliary heating device to operate at a high gear.

[0021] In some embodiments of the present application, the control method further comprises:

[0022] after determining that the auxiliary heating opening condition is met and the auxiliary heating device is opened, if the first ratio decreases to be less than or equal to the first threshold, controlling the auxiliary heating device to be closed.

[0023] In some embodiments of the present application, the control method further comprises:

[0024] when the external environment temperature is less than the preset temperature, controlling the auxiliary heating device to be opened.

[0025] In some embodiments of the present application, a control device is also provided, comprising:

[0026] an acquisition module, configured to acquire the suction pressure of a compressor of an air conditioner when an external environment temperature is greater than or equal to a preset temperature;

[0027] a judgment module, configured to determine whether an auxiliary heating opening condition is met according to the suction pressure and the external environment temperature.

[0028] The control module is configured to control the auxiliary heating device to be turned on when it is determined that the auxiliary heating turning-on condition is met.

[0029] In some embodiments of the present application, an air conditioner is also provided, which comprises a memory and a processor, the memory stores a computer program, and the processor is configured to run the computer program in the memory to execute the steps of the control method described above.

[0030] In some embodiments of the present application, a storage medium is also provided, which stores a computer program, and the computer program is loaded and executed by a processor to execute the steps of the control method described above.

[0031] Embodiments of the present application provide a control method, device, air conditioner and storage medium. The control method obtains the suction pressure of a compressor of an air conditioner when the external environment temperature is greater than or equal to a preset temperature. The control method determines whether an auxiliary heating turning-on condition is met according to the suction pressure and the external environment temperature. When it is determined that the auxiliary heating turning-on condition is met, the control method controls the auxiliary heating device to be turned on. In other words, the control method controls whether the auxiliary heating device is turned on according to the suction pressure and the external environment temperature. In fact, the control method determines whether the auxiliary heating device is turned on according to the liquid return condition of the compressor, so that the auxiliary heating device can be turned on in time, and the high energy consumption caused by the auxiliary heating device being turned on excessively can be avoided, thereby achieving the energy saving effect. BRIEF DESCRIPTION OF DRAWINGS

[0032] 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 for those skilled in the art, other drawings can also be obtained according to the structures shown in the drawings without any creative labor.

[0033] Fig. 1 The flowchart of the control method of an embodiment of the present application;

[0034] Fig. 2 The structural schematic diagram of the control device of an embodiment of the present application;

[0035] Fig. 3 The structural schematic diagram of the air conditioner of an embodiment of the present application.

[0036] Fig. 10 is a structural schematic diagram of the control device of an embodiment of the present application. DETAILED DESCRIPTION

[0037] With reference to the accompanying drawings, the technical solutions in the embodiments of the present application will be clearly and completely described below. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments of the present application, all other embodiments obtained by a person of ordinary skill in the art without creative effort are within the scope of protection of the present application.

[0038] It should be noted that all the direction indications (such as up, down, left, right, front, back, and the like) in the embodiments of the present application are only used to explain the relative position relationship, movement condition and the like between components in a certain posture (as shown in the drawings), and if the certain posture changes, the direction indications also change accordingly.

[0039] In the present application, unless otherwise explicitly specified and limited, the terms “connection”, “fixation” and the like should be understood in a broad sense, for example, “fixation” can be fixed connection, or detachable connection, or integral; can be mechanical connection, or electrical connection; can be direct connection, or indirect connection through an intermediate medium; can be internal connection of two elements or interaction relationship between two elements, unless otherwise explicitly limited. For a person of ordinary skill in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0040] In addition, if the present application has a description of “first”, “second” and the like, the description of “first”, “second” and the like is only for the purpose of description, and cannot be understood as indicating or implying the relative importance of the indicated technical features or implicitly indicating the number of the indicated technical features. Therefore, the features limited by “first” and “second” can explicitly or implicitly include at least one of the features. In addition, the meaning of “and / or” appearing throughout the text includes three parallel solutions. For example, “A and / or B” includes A solution, or B solution, or A and B solution. In addition, the technical solutions of each embodiment can be combined with each other, but it must be based on the fact that a person of ordinary skill in the art can realize it. When the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, and is not within the scope of protection claimed by the present application.

[0041] As shown in the figure, the present application provides a control method, comprising: Figs. 1-3

[0042] S100, when the external environment temperature is greater than or equal to the preset temperature, the suction pressure of the compressor of the air conditioner is obtained, and whether the auxiliary heating opening condition is met is determined according to the suction pressure and the external environment temperature.

[0043] ​Wherein, the external environment temperature is the environment temperature of the environment where the outdoor unit of the air conditioner is located, and the suction pressure of the compressor of the air conditioner is the pressure at the inlet of the compressor. Generally, due to the low environment temperature, the evaporation effect of the evaporator is poor, and there may be more liquid refrigerant at the inlet. Therefore, when the external environment temperature is lower than the preset temperature, the auxiliary heating device is usually directly started. When the external environment temperature is greater than or equal to the preset temperature, the evaporation effect of the evaporator is better, and the liquid refrigerant at the inlet of the compressor is reduced, so it is necessary to determine whether the auxiliary heating device is started according to the actual liquid return condition. Therefore, when the external environment is greater than or equal to the preset temperature, it is necessary to determine whether the suction pressure and the external environment temperature meet the auxiliary heating starting condition. Generally, the preset temperature is 0℃.

[0044] S400, when it is determined that the auxiliary heating starting condition is met, the auxiliary heating device is controlled to be started.

[0045] Generally, when it is determined that the auxiliary heating starting condition is met, it means that the suction superheat degree of the current compressor inlet is high, and the liquid return amount at the inlet is large, so the auxiliary heating device needs to be started. When the suction pressure and the external environment temperature do not meet the auxiliary heating starting condition, it means that the suction liquid return amount of the current compressor inlet is small or basically no liquid refrigerant, so the auxiliary heating device does not need to be started.

[0046] That is, it can be understood that the control method of the application controls whether the auxiliary heating device is started according to the suction pressure and the external environment temperature, which actually judges whether the auxiliary heating is started according to the liquid return condition of the compressor, so that the auxiliary heating can be started in time, the high energy consumption caused by the over-opening of the auxiliary heating device is avoided, and the energy saving effect is realized.

[0047] In some embodiments, in S100, it is determined whether the auxiliary heating starting condition is met, including:

[0048] The first ratio of the suction pressure and the external environment temperature is determined.

[0049] Wherein, the suction pressure is P, the external environment temperature is T, and the first ratio is Q, so Q=P / T.

[0050] According to the first ratio and the first threshold value, it is determined whether the auxiliary heating starting condition is met.

[0051] Wherein, when the valve step of the electronic expansion valve is too large or the evaporation effect of the evaporator is poor, the suction pressure will be large, the corresponding saturation temperature will be high, and the suction superheat degree will be in the liquid return state. That is, when the first ratio is greater than the first threshold value, it means that the current suction superheat degree is in the liquid return state, so the auxiliary heating device needs to be started.

[0052] If the first ratio is greater than the first threshold value, it is determined that the auxiliary heating starting condition is met.

[0053] If the first ratio is less than or equal to the first threshold value, it is determined that the auxiliary heating opening condition is not met.

[0054] In some embodiments, before determining whether the auxiliary heating opening condition is met according to the first ratio and the first threshold value, the control method further comprises:

[0055] The first threshold value is determined according to the external environment temperature.

[0056] It should be noted that, in general, different external environments correspond to different first threshold values. It can be understood that, as the external environment temperature rises, the evaporation effect of the evaporator becomes better, and the refrigerant liquid content returning to the compressor decreases accordingly. Therefore, the first ratio corresponding to a higher external environment temperature generally decreases, and since the liquid return amount decreases at this time, the auxiliary heating device does not need to be opened. Therefore, the first threshold value corresponding to a higher external environment temperature should also be smaller.

[0057] Specifically, a corresponding first threshold value is set every 1℃, such as 0℃-1℃ corresponding to a first threshold value, 1℃-2℃ corresponding to a first threshold value, and so on. When the external environment temperature is 0.5℃, the first threshold value corresponding to 0℃-1℃ is selected; when the external environment temperature is 1℃, the first threshold value corresponding to 0℃-1℃ is selected; when the external environment temperature is 2℃, the first threshold value corresponding to 1℃-2℃ is selected.

[0058] In other embodiments, a corresponding first threshold value can also be set every 2℃.

[0059] That is, in S100, determining whether the auxiliary heating opening condition is met comprises:

[0060] Determining the first ratio of the suction pressure to the external environment temperature;

[0061] Determining the first threshold value according to the external environment temperature;

[0062] Determining whether the auxiliary heating opening condition is met according to the first ratio and the first threshold value;

[0063] If the first ratio is greater than the first threshold value, it is determined that the auxiliary heating opening condition is met;

[0064] If the first ratio is less than or equal to the first threshold value, it is determined that the auxiliary heating opening condition is not met.

[0065] In some embodiments, after it is determined that the auxiliary heating opening condition is met, the control method further comprises:

[0066] Determining the heating power of the auxiliary heating device according to the first ratio.

[0067] It can be understood that the first ratio is Q=P / T, if the first ratio increases, it can be that the suction pressure increases, or the external environment temperature decreases, or both, that is, the first ratio increases represents that the liquid return amount increases, and the auxiliary heating device needs to be operated at a larger power to ensure that the amount of liquid refrigerant at the suction port of the compressor is not too high to prevent liquid hammer. Conversely, as the first ratio decreases, it can be that the suction pressure decreases, or the external environment temperature increases, or both, that is, the first ratio decreases represents that the liquid return amount decreases, and the power of the auxiliary heating device can be reduced.

[0068] Specifically, as the first ratio increases, the auxiliary heating device can steplessly adjust its heating power, or stepwise adjust its heating power.

[0069] In some embodiments, according to the first ratio, the heating power of the auxiliary heating device is determined, including:

[0070] After it is determined that the auxiliary heating opening condition is met, if the first ratio is greater than the first threshold value and less than or equal to the second threshold value, the auxiliary heating device is controlled to operate at a low gear;

[0071] After it is determined that the auxiliary heating opening condition is met, if the first ratio is greater than the second threshold value and less than or equal to the third threshold value, the auxiliary heating device is controlled to operate at a middle gear;

[0072] After it is determined that the auxiliary heating opening condition is met, if the first ratio is greater than the third threshold value, the auxiliary heating device is controlled to operate at a high gear.

[0073] The heating power of the auxiliary heating device when operating at the low gear is less than the heating power when operating at the middle gear, and the heating power of the auxiliary heating device when operating at the middle gear is less than the heating power when operating at the high gear.

[0074] Generally, according to the foregoing embodiments, the first threshold value is determined according to the external environment temperature, and in some embodiments, as the first ratio increases, the heating power of the auxiliary heating device is gradually increased, and further including:

[0075] The second threshold value is determined according to the external environment temperature, and the third threshold value is determined according to the external environment temperature.

[0076] Wherein, every 1℃ sets a corresponding second threshold and third threshold, such as 0℃-1℃ corresponding to a second threshold and a third threshold, 1℃-2℃ corresponding to a second threshold and third threshold, and so on. When the external environment temperature is 0.5℃, the second threshold and third threshold corresponding to 0℃-1℃ are selected; when the external environment temperature is 1℃, the second threshold and third threshold corresponding to 0℃-1℃ are selected; when the external environment temperature is 2℃, the second threshold and third threshold corresponding to 1℃-2℃ are selected.

[0077] Specifically, in some embodiments, after determining that the auxiliary heating opening condition is met, the heating power of the auxiliary heating device is gradually reduced as the first ratio decreases.

[0078] Referring to the adjustment mode of the heating gear of the auxiliary heating device in the above embodiments, when the first ratio decreases from greater than the third threshold to between the second threshold and the third threshold, the heating gear of the auxiliary heating device is reduced from the high gear to the middle gear, and when the first ratio decreases from greater than the second threshold to less than the third threshold to between the first threshold and the second threshold, the heating gear of the auxiliary heating device is reduced from the middle gear to the low gear.

[0079] In some embodiments, the auxiliary heating device can also be provided with four gears, five gears, and correspond to different thresholds.

[0080] In some embodiments, the control method further comprises:

[0081] After determining that the auxiliary heating opening condition is met and the auxiliary heating device is opened, if the first ratio decreases to less than or equal to the first threshold, the auxiliary heating device is controlled to be closed.

[0082] It can be understood that when the first ratio decreases to less than or equal to the first threshold, it indicates that the liquid return amount of the compressor suction inlet decreases, and the auxiliary heating device can be controlled to be closed, thereby avoiding the high energy consumption caused by the excessive opening of the auxiliary heating device.

[0083] In some embodiments, the control method further comprises:

[0084] When the external environment temperature is less than the preset temperature, the auxiliary heating device is controlled to be opened.

[0085] Generally, the preset temperature is set to 0℃, and when the preset temperature is less than 0℃, it indicates that the evaporation effect of the evaporator is not good, and the external environment temperature also causes the liquid return amount to increase, therefore, the auxiliary heating device needs to be directly opened.

[0086] In some embodiments, the present application also provides a control device 10, comprising an acquisition module 100, a judgment module 200 and a control module 300. The acquisition module 100 is configured to acquire the suction pressure of the compressor of the air conditioner when the external environment temperature is greater than or equal to the preset temperature. The judgment module 200 is configured to determine whether the auxiliary heating opening condition is met according to the suction pressure and the external environment temperature. The control module 300 is configured to control the auxiliary heating device to open when it is determined that the auxiliary heating opening condition is met.

[0087] The external environment temperature is the environment temperature of the environment where the outdoor unit of the air conditioner is located, which is generally monitored by a temperature sensor arranged on the air conditioner outdoor unit. The suction pressure of the compressor of the air conditioner can be acquired by a pressure sensor arranged at the suction port of the compressor, which is connected to the control module 300 and feeds back the acquired suction pressure to the control module 300.

[0088] The control module 300 transmits the suction pressure and the external environment temperature to the judgment module 200, and the judgment module 200 feeds back the judgment result, and the control module 300 controls the opening and closing of the auxiliary heating device according to the judgment result.

[0089] In some embodiments, the present application also provides an air conditioner, which can include a processor 601 with one or more processing cores, a memory 602 with one or more computer readable storage media, a power supply 603 and an input unit 604, and the like. Those skilled in the art can understand that the structure of the air conditioner described above does not constitute a limitation on the air conditioner, and can include more or fewer components, or combine certain components, or different component arrangements. Among them:

[0090] The processor 601 is the control center of the air conditioner, which connects all parts of the air conditioner through various interfaces and lines, executes the software programs and / or modules stored in the memory 602 and calls the data stored in the memory 602, performs various functions and processes data of the air conditioner, and thus monitors the air conditioner as a whole. Optionally, the processor 601 can include one or more processing cores; preferably, the processor 601 can integrate an application processor 601 and a modem processor 601, wherein the application processor 601 mainly processes the operating system, user interface and computer programs, etc., and the modem processor 601 mainly processes wireless communication. It can be understood that the above-mentioned modem processor 601 can also not be integrated into the processor 601.

[0091] The memory 602 can be used to store software programs and modules, and the processor 601 executes various function applications and data processing by running the software programs and modules stored in the memory. The memory can mainly include a program storage area and a data storage area, wherein the program storage area can store an operating system, computer programs required by at least one function (such as a sound playing function, an image playing function, etc.), and the like; and the data storage area can store data created according to the use of the server, etc. In addition, the memory can include a high-speed random access memory, and can also include a non-volatile memory, such as at least one magnetic disk storage device, a flash memory device, or other volatile solid-state memory device. Accordingly, the memory can also include a memory controller to provide access for the processor 601 to the memory.

[0092] The air conditioner also includes a power supply 603 for supplying power to various components. Preferably, the power supply 603 can be logically connected to the processor 601 through a power management system, so as to realize functions such as management of charging, discharging, and power consumption management through the power management system. The power supply can also include one or more than one direct current or alternating current power supply, a recharging system, a power failure detection circuit, a power converter or inverter, a power status indicator, and any other components.

[0093] The air conditioner can also include an input unit 604, which can be used to receive input digital or character information, and generate keyboard, mouse, joystick, optical or trackball signal inputs related to user settings and function controls.

[0094] Although not shown, the air conditioner can also include a display unit, etc., which will not be described here. In particular, in the present embodiment, the processor 601 in the air conditioner will load executable files corresponding to the processes of one or more computer programs into the memory 602 according to the following instructions, and run the computer programs stored in the memory 602 by the processor 601 to perform the following steps:

[0095] When the external environment temperature is greater than or equal to a preset temperature, the suction pressure of the compressor of the air conditioner is obtained, and it is determined whether the auxiliary heating opening condition is met according to the suction pressure and the external environment temperature;

[0096] When the auxiliary heating opening condition is met, the auxiliary heating device is controlled to be turned on.

[0097] The air conditioner controls whether the auxiliary heating device is turned on according to the suction pressure and the external environment temperature, which actually determines whether the auxiliary heating is turned on according to the liquid return condition of the compressor, so as to timely turn on the auxiliary heating and avoid high energy consumption caused by excessive opening of the auxiliary heating device, thereby realizing energy saving effect.

[0098] Those skilled in the art can understand that all or part of the steps in any of the methods of the above embodiments can be completed by a computer program, or by a computer program controlling related hardware, which can be stored in a computer readable storage medium and loaded and executed by the processor 601.

[0099] In some embodiments, the application also provides a storage medium storing a computer program, which is loaded and executed by a processor to perform the following steps:

[0100] When the external environment temperature is greater than or equal to the preset temperature, the suction pressure of the compressor of the air conditioner is obtained, and it is determined whether the auxiliary heating opening condition is met according to the suction pressure and the external environment temperature;

[0101] When it is determined that the auxiliary heating opening condition is met, the auxiliary heating device is controlled to open.

[0102] Through the above steps, whether the auxiliary heating device is opened is controlled according to the suction pressure and the external environment temperature, that is, whether the auxiliary heating is opened is determined according to the liquid return condition of the compressor, so that the auxiliary heating can be opened in time, the high energy consumption caused by the over-opening of the auxiliary heating device is avoided, and the energy saving effect is realized.

[0103] Those skilled in the art can understand that any reference to memory, storage, database or other medium used in the embodiments provided by the application can include non-volatile and / or volatile memory. The non-volatile memory can include read-only memory (ROM), programmable ROM (PROM), electrically programmable ROM (EPROM), electrically erasable programmable ROM (EEPROM) or flash memory. The volatile memory can include random access memory (RAM) or external cache memory. As an illustration but not limitation, RAM is available in various forms, such as static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double data rate SDRAM (DDR SDRAM), enhanced SDRAM (ESDRAM), synchronous link (Synch link), DRAM (SLDRAM), memory bus (Rambus) direct RAM (RDRAM), direct memory bus dynamic RAM (DRDRAM), and memory bus dynamic RAM (RDRAM) and the like.

[0104] Due to the computer program stored in the storage medium, the steps in the air conditioner control method of any of the embodiments provided by the application can be executed, so that the beneficial effects of the air conditioner control method of any of the embodiments provided by the application can be achieved. Details are described in the above embodiments, which will not be repeated here.

[0105] The specific implementation of the above operations can refer to the foregoing embodiments, which will not be described here again.

[0106] In the above embodiments, the description of each embodiment has its own focus, and the parts not described in detail in a certain embodiment can refer to the detailed description of other embodiments above, which will not be described here again.

[0107] The above is only optional embodiments of the present application, and does not limit the patent scope of the present application, and any equivalent structural transformation made by using the content of the present application specification and drawings, or direct / indirect application in other related technical fields is included in the patent protection scope of the present application.

Claims

1. A control method characterized by, The control method comprises the following steps: obtaining the suction pressure of the compressor of the air conditioner when the external environment temperature is greater than or equal to a preset temperature, and determining whether the auxiliary heating opening condition is met according to the suction pressure and the external environment temperature; determining a first ratio of the suction pressure to the external environment temperature; determining whether the auxiliary heating opening condition is met according to the first ratio and a first threshold value; if the first ratio is greater than the first threshold value, it is determined that the auxiliary heating opening condition is met; if the first ratio is less than or equal to the first threshold value, it is determined that the auxiliary heating opening condition is not met; when it is determined that the auxiliary heating opening condition is met, the auxiliary heating device is controlled to be opened.

2. The control method according to claim 1, characterized by, Before determining whether the auxiliary heating opening condition is met according to the first ratio and the first threshold value, the control method further comprises: determining the first threshold value according to the external environment temperature.

3. The control method according to claim 1, characterized by, After it is determined that the auxiliary heating opening condition is met, the control method further comprises: determining the heating power of the auxiliary heating device according to the first ratio.

4. The control method according to claim 3, characterized by The determination of the heating power of the auxiliary heating device according to the first ratio comprises: after it is determined that the auxiliary heating opening condition is met, if the first ratio is greater than the first threshold value and less than or equal to a second threshold value, the auxiliary heating device is controlled to be operated at a low gear; after it is determined that the auxiliary heating opening condition is met, if the first ratio is greater than the second threshold value and less than or equal to a third threshold value, the auxiliary heating device is controlled to be operated at a middle gear; after it is determined that the auxiliary heating opening condition is met, if the first ratio is greater than the third threshold value, the auxiliary heating device is controlled to be operated at a high gear.

5. The control method according to claim 1, characterized by, The control method further comprises: after it is determined that the auxiliary heating opening condition is met and the auxiliary heating device is opened, if the first ratio decreases to be less than or equal to the first threshold value, the auxiliary heating device is controlled to be closed.

6. The control method according to any one of claims 1 to 5, characterized by, The control method further comprises: when the external environment temperature is less than the preset temperature, the auxiliary heating device is controlled to be opened.

7. A control device characterized by comprising: The control method comprises the following steps: an obtaining module, configured to obtain the suction pressure of the compressor of the air conditioner when the external environment temperature is greater than or equal to a preset temperature; a determining module, configured to determine whether the auxiliary heating opening condition is met according to the suction pressure and the external environment temperature, and determine a first ratio of the suction pressure to the external environment temperature, and determine whether the auxiliary heating opening condition is met according to the first ratio and a first threshold value, if the first ratio is greater than the first threshold value, it is determined that the auxiliary heating opening condition is met, and if the first ratio is less than or equal to the first threshold value, it is determined that the auxiliary heating opening condition is not met; a control module, configured to control the auxiliary heating device to be opened when it is determined that the auxiliary heating opening condition is met.

8. An air conditioner characterized by comprising: The storage medium stores a computer program, and the computer program is loaded and executed by the processor to perform the steps in the control method of any one of claims 1-6.

9. A storage medium, characterized by The storage medium stores a computer program, and the computer program is loaded and executed by the processor to perform the steps in the control method of any one of claims 1-6.

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