Air conditioner, control method and device thereof, storage medium and product

Abstract

The invention discloses an air conditioner and a control method and device thereof, a storage medium and a product, the control method comprises the steps that a first voltage value of the air conditioner is obtained, and the first voltage value comprises an alternating current voltage value of a power supply of the air conditioner or a direct current voltage value of the rectified power supply; comparing the first voltage value with a set voltage threshold value to generate a comparison result; determining a target power supply rectification mode of the air conditioner based on the comparison result; controlling the air conditioner to operate in the target power supply rectification mode; wherein the target power supply rectification mode is a non-voltage-doubling rectification mode or a voltage-doubling rectification mode. The air conditioner is provided with the non-double-voltage rectification mode and the double-voltage rectification mode so as to adapt to different power supply voltages, and when the air conditioner runs, if the power supply voltages fluctuate, bidirectional switching between the double-voltage rectification mode and the non-double-voltage rectification mode is supported based on the voltage self-recognition function of the air conditioner, the power supply voltage adaptation capacity of the air conditioner is improved, and the service life of the air conditioner is prolonged. And stable operation of the air conditioner is ensured.

Description

Technical Field

[0001] This application relates to the field of air conditioning, and more particularly to an air conditioner and its control method, apparatus, storage medium and product. Background Technology

[0002] The power supply circuit of the air conditioner needs to be compatible with the power supply voltage of the area where the air conditioner is used to ensure that the rectified voltage output by the air conditioner meets the operating requirements of the fan and facilitates the operation and control of the air conditioner's fan.

[0003] In related technologies, air conditioners have a narrow range of compatible power supply voltages and cannot adapt to multiple power supply voltage systems. If the air conditioner needs to adapt to different power supply voltages, the rectifier circuit of the air conditioner needs to be replaced. Moreover, when the power supply voltage fluctuates greatly, the rectified voltage output by the air conditioner cannot guarantee the stable operation of the fan, which is not conducive to the fan operation control. Summary of the Invention

[0004] In view of this, embodiments of this application provide an air conditioner and its control method, apparatus, storage medium and product, aiming to improve the voltage adaptability of the air conditioner and ensure the stable operation of the air conditioner.

[0005] The technical solution of this application embodiment is implemented as follows:

[0006] In a first aspect, embodiments of this application provide a method for controlling an air conditioner, the method comprising:

[0007] Obtain a first voltage value of the air conditioner, the first voltage value including: the AC voltage value of the power supply of the air conditioner or the DC voltage value after rectification of the power supply;

[0008] Compare the first voltage value with the set voltage threshold to generate a comparison result;

[0009] Based on the comparison results, the target power supply rectification mode of the air conditioner is determined;

[0010] Control the air conditioner to operate in the target power supply rectification mode;

[0011] The target power supply rectification mode is either a non-voltage multiplier rectification mode or a voltage multiplier rectification mode. In the non-voltage multiplier rectification mode, the ratio of the DC voltage value to the AC voltage value is less than the ratio of the DC voltage value to the AC voltage value in the voltage multiplier rectification mode.

[0012] In some implementations, before comparing the first voltage value with a set voltage threshold to generate a comparison result, the method further includes:

[0013] The set voltage threshold is determined based on the operating status of the air conditioner and / or the current power supply rectification mode.

[0014] In some implementations, determining the set voltage threshold based on the operating state of the air conditioner and / or the current power supply rectification mode includes:

[0015] If the air conditioner's fan is not running, then the set voltage threshold is determined to be the first set voltage threshold;

[0016] If the air conditioner is operating in the non-voltage doubler rectification mode, then the set voltage threshold is determined to be the second set voltage threshold;

[0017] If the air conditioner is operating in the voltage doubler rectification mode, then the set voltage threshold is determined to be the third set voltage threshold.

[0018] In some implementations, if the first voltage value is the AC voltage value, then the first set voltage threshold is set to the first AC voltage threshold, the second set voltage threshold is set to the second AC voltage threshold, and the third set voltage threshold is set to the third AC voltage threshold.

[0019] If the first voltage value is the DC voltage value, then the first set voltage threshold is set to the first DC voltage threshold, the second set voltage threshold is set to the second DC voltage threshold, and the third set voltage threshold is set to the third DC voltage threshold.

[0020] Wherein, the third AC voltage threshold is greater than the first AC voltage threshold, and the first AC voltage threshold is greater than the second AC voltage threshold; the third DC voltage threshold is greater than the first DC voltage threshold, and the first DC voltage threshold is greater than the second DC voltage threshold.

[0021] In some embodiments, the rectifier circuit of the air conditioner includes two branches: a non-voltage doubler rectifier circuit and a voltage doubler rectifier circuit. The non-voltage doubler rectifier circuit or the voltage doubler rectifier circuit is used to rectify the power supply into direct current. The method further includes:

[0022] If the air conditioner is controlled to operate in the voltage doubler rectification mode, then the voltage doubler rectification circuit is controlled to be turned on, and the non-voltage doubler rectification circuit is controlled to be turned off; the turns ratio of the air conditioner's transformer is set to the first turns ratio;

[0023] If the air conditioner is controlled to operate in the non-voltage doubler rectifier mode, then the non-voltage doubler rectifier circuit is controlled to be turned on, and the voltage doubler rectifier circuit is controlled to be turned off; the transformer ratio of the air conditioner is set to the second ratio.

[0024] The secondary voltage of the transformer is rectified and used to provide control power for the air conditioner, and the first transformation ratio is smaller than the second transformation ratio.

[0025] In some implementations, determining the target power supply rectification mode of the air conditioner based on the comparison results includes:

[0026] Based on the comparison results, if the first voltage value is greater than or equal to the set voltage threshold, then the target power supply rectification mode of the air conditioner is determined to be the non-voltage doubler rectification mode; or...

[0027] Based on the comparison results, if it is determined that the first voltage value is less than the set voltage threshold, and the air conditioner is currently operating in the voltage doubler rectification mode or the air conditioner's fan is not running, then the target power supply rectification mode of the air conditioner is determined to be the voltage doubler rectification mode; or,

[0028] Based on the comparison results, if it is determined that the first voltage value is less than the set voltage threshold, and the air conditioner is currently operating in the non-voltage doubler rectification mode, then the first voltage value is continuously acquired within a set time period, and the continuously acquired first voltage value is compared with the set voltage threshold to generate a comparison result set; based on the comparison result set, the target power supply rectification mode of the air conditioner is determined.

[0029] In some implementations, determining the target power supply rectification mode of the air conditioner based on the comparison result set includes:

[0030] Based on the comparison result set, if it is determined that the first voltage value continuously acquired within the set time period is less than the set voltage threshold, then the target power supply rectification mode of the air conditioner is determined to be the voltage multiplier rectification mode; or...

[0031] Based on the comparison result set, if it is determined that there is a first voltage value greater than or equal to the set voltage threshold within the set time period, then the target power supply rectification mode of the air conditioner is determined to be the non-voltage doubler rectification mode.

[0032] In some implementations, controlling the air conditioner to operate in the target power rectification mode includes:

[0033] If it is determined that the target power rectification mode is inconsistent with the current power rectification mode of the air conditioner, the air conditioner's fan will be stopped, and after switching to the target power rectification mode, the air conditioner's fan will be started.

[0034] Secondly, embodiments of this application provide a control device for an air conditioner, the device comprising:

[0035] The acquisition module is used to acquire a first voltage value of the air conditioner, the first voltage value including: the AC voltage value of the power supply of the air conditioner or the DC voltage value after rectification of the power supply;

[0036] The comparison module is used to compare the first voltage value with a set voltage threshold and generate a comparison result;

[0037] A determining module is used to determine the target power supply rectification mode of the air conditioner based on the comparison results;

[0038] The control module is used to control the air conditioner to operate in the target power supply rectification mode;

[0039] The target power supply rectification mode is either a non-voltage multiplier rectification mode or a voltage multiplier rectification mode. In the non-voltage multiplier rectification mode, the ratio of the DC voltage value to the AC voltage value is less than the ratio of the DC voltage value to the AC voltage value in the voltage multiplier rectification mode.

[0040] Thirdly, embodiments of this application provide an air conditioner, including: a processor and a memory for storing a computer program capable of running on the processor, wherein the processor, when running the computer program, performs the steps of the method described in the first aspect.

[0041] In some implementations, the rectifier circuit of the air conditioner includes two branches: a non-voltage doubler rectifier circuit and a voltage doubler rectifier circuit. The non-voltage doubler rectifier circuit or the voltage doubler rectifier circuit is used to rectify the power supply of the air conditioner into DC power. When the air conditioner is running, one of the non-voltage doubler rectifier circuit and the voltage doubler rectifier circuit is turned on.

[0042] Fourthly, embodiments of this application provide a computer storage medium storing a computer program, characterized in that, when the computer program is executed by a processor, it implements the steps of the method as described in any of the first aspects.

[0043] Fifthly, embodiments of this application provide a computer program product, including a computer program, characterized in that, when executed by a processor, the computer program implements the steps of the method as described in any one of the first aspects.

[0044] The technical solution provided in this application embodiment obtains a first voltage value of the air conditioner, which includes: the AC voltage value of the power supply to the air conditioner or the DC voltage value after rectification of the power supply; compares the first voltage value with a set voltage threshold to generate a comparison result; determines the target power supply rectification mode of the air conditioner based on the comparison result; and controls the air conditioner to operate in the target power supply rectification mode; wherein, the target power supply rectification mode is a non-voltage multiplier rectification mode or a voltage multiplier rectification mode, and the ratio of the DC voltage value to the AC voltage value in the non-voltage multiplier rectification mode is less than the ratio of the DC voltage value to the AC voltage value in the voltage multiplier rectification mode. Thus, the air conditioner is set to a non-voltage multiplier rectification mode and a voltage multiplier rectification mode to adapt to different power supply voltages, and when the air conditioner is running, if the power supply voltage fluctuates, based on the air conditioner's voltage self-identification function, it supports bidirectional switching between the voltage multiplier rectification mode and the non-voltage multiplier rectification mode, improving the air conditioner's power supply voltage adaptability and ensuring stable operation of the air conditioner. Attached Figure Description

[0045] Figure 1 This is a schematic flowchart of a control method for an air conditioner according to an embodiment of this application;

[0046] Figure 2 This is a schematic diagram of the structure of an air conditioner in one application example of this application;

[0047] Figure 3 This is a flowchart illustrating a control method for an air conditioner in one application example of this application;

[0048] Figure 4 This is a schematic diagram of the control device of the air conditioner according to an embodiment of this application;

[0049] Figure 5 This is a schematic diagram of the structure of an air conditioner according to an embodiment of this application. Detailed Implementation

[0050] The present application will now be described in further detail with reference to the accompanying drawings and embodiments.

[0051] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application.

[0052] This application provides a method for controlling an air conditioner, which is used to regulate the temperature, humidity, etc. of the environment. The air conditioner can be a cooling-only air conditioner or a cooling and heating air conditioner, and can take the form of a wall-mounted air conditioner, floor-standing air conditioner, window air conditioner, or ceiling-mounted air conditioner, etc. This application does not specifically limit the type of air conditioner.

[0053] like Figure 1As shown, the control methods for air conditioners include:

[0054] Step 101: Obtain the first voltage value of the air conditioner. The first voltage value includes: the AC voltage value of the power supply of the air conditioner or the DC voltage value after rectification of the power supply.

[0055] Here, the air conditioner is equipped with a rectifier circuit. The AC power output from the power supply is used to power the air conditioner. The AC power is rectified into DC power by the rectifier circuit and then used to power the power module of the air conditioner to provide power to the air conditioner's fan.

[0056] It is understandable that the AC voltage value is the power supply voltage value of the rectifier circuit, and the DC voltage value is the output voltage value of the rectifier circuit.

[0057] Step 102: Compare the first voltage value with the set voltage threshold to generate a comparison result.

[0058] It should be noted that by comparing the DC voltage value with the set voltage threshold, this embodiment of the application can determine whether the rectified DC voltage value meets the operating requirements of the fan.

[0059] It should be noted that by comparing the AC voltage value with the set voltage threshold, the embodiments of this application can indirectly determine whether the rectified DC voltage value meets the operating requirements of the fan.

[0060] Here, the first set voltage threshold is set based on the type of the first voltage value obtained.

[0061] For example, if the first voltage value is an AC voltage value, then the voltage threshold is set to an AC voltage threshold; if the first voltage value is a DC voltage value, then the voltage threshold is set to a DC voltage threshold.

[0062] Step 103: Based on the comparison results, determine the target power supply rectification mode for the air conditioner.

[0063] Step 104: Control the air conditioner to operate in the target power rectification mode.

[0064] For example, the target power supply rectification mode is a non-voltage doubler rectification mode or a voltage doubler rectification mode. In the non-voltage doubler rectification mode, the ratio of the DC voltage value to the AC voltage value is less than the ratio of the DC voltage value to the AC voltage value in the voltage doubler rectification mode.

[0065] For example, the rectifier circuit of the air conditioner includes two branches: a non-voltage doubler rectifier circuit and a voltage doubler rectifier circuit. The non-voltage doubler rectifier circuit or the voltage doubler rectifier circuit is used to rectify the power supply into DC power. The method further includes: if the air conditioner is controlled to operate in voltage doubler rectification mode, then the voltage doubler rectifier circuit is controlled to be turned on and the non-voltage doubler rectifier circuit is controlled to be turned off; if the air conditioner is controlled to operate in non-voltage doubler rectification mode, then the non-voltage doubler rectifier circuit is controlled to be turned on and the voltage doubler rectifier circuit is controlled to be turned off.

[0066] Here, the rectifier circuit without voltage doubler directly rectifies the power supply into DC power. Typically, the DC voltage output after rectification by the rectifier circuit without voltage doubler is the peak value of the AC voltage of the power supply.

[0067] Here, the voltage doubler rectifier circuit utilizes the unidirectional conduction characteristic of diodes and the characteristics of capacitor terminal voltage not changing abruptly and being able to store energy, to add the energy stored in the capacitor in order of polarity, so that the rectified DC voltage value is higher than the peak value of the power supply terminal voltage.

[0068] Preferably, the voltage doubler rectifier circuit in this embodiment is a voltage doubler rectifier circuit.

[0069] It is understandable that when the air conditioner is running, only one branch of the non-voltage doubler rectifier circuit and the voltage doubler rectifier circuit in the rectifier circuit are conducting.

[0070] It should be noted that the DC voltage output by the rectifier circuit is directly related to the air conditioner's power supply voltage, and the power supply voltage may vary in different regions. If the power supply voltage in a region is low, the DC voltage output without a voltage doubler rectifier circuit may not meet the operating requirements of the air conditioner's fan. Here, the air conditioner uses a voltage doubler rectifier circuit to increase the rectified DC voltage value, ensuring stable fan operation.

[0071] It should be noted that, in related technologies, depending on the power supply voltage system of the region of use, air conditioners are usually only equipped with a voltage doubler rectifier circuit or a voltage doubler rectifier circuit. The power supply voltage range that the air conditioner is compatible with is relatively narrow. If there are different power supply voltage systems in the same region, the rectifier circuit and related components of the air conditioner need to be replaced. In addition, the power supply voltage range allowed in some regions is relatively wide. If the power supply voltage fluctuates greatly, it may not be possible to guarantee the stable operation of the air conditioner's fan.

[0072] Understandably, air conditioners are equipped with both voltage doubling and non-voltage doubling rectification modes to adapt to different power supply voltages. When the air conditioner is running, if the power supply voltage fluctuates, the air conditioner's voltage self-identification function supports bidirectional switching between voltage doubling and non-voltage doubling rectification modes, thereby improving the air conditioner's power supply voltage adaptability and ensuring stable operation.

[0073] For example, if the air conditioner is controlled to operate in voltage doubler rectification mode, the transformer ratio of the air conditioner is set to the first ratio; if the air conditioner is controlled to operate in non-voltage doubler rectification mode, the transformer ratio of the air conditioner is set to the second ratio; wherein, the secondary voltage of the transformer is rectified to provide the control power supply for the air conditioner, and the first ratio is smaller than the second ratio.

[0074] It should be noted that, in addition to supplying power to the power module after rectification by the rectifier circuit, the power supply for the air conditioner also provides control power. Here, the power supply is stepped down by the transformer to output low-voltage AC power, which is then rectified and supplied to low-voltage control components such as the air conditioner's thermostat.

[0075] It is understandable that, since the first turns ratio is smaller than the second turns ratio, and the power supply provides the primary voltage of the transformer, if the power supply voltage is the same, the secondary voltage of the transformer with the first turns ratio is greater than the secondary voltage with the second turns ratio.

[0076] Understandably, when the air conditioner operates in a non-voltage doubler rectification mode, the transformer's turns ratio is set to the second ratio, and the DC power after rectification of the transformer's secondary voltage can provide a stable control power supply. When the air conditioner operates in a voltage doubler rectification mode, if the transformer's turns ratio is set to the second ratio, the DC voltage after rectification of the transformer's secondary voltage will be low due to the low voltage of the air conditioner's power supply, which may not meet the air conditioner's control power supply requirements. Therefore, the transformer's turns ratio is set to the first ratio to increase the transformer's secondary voltage and provide a stable control power supply.

[0077] In one application example of this application, the first turns ratio of the transformer is set to 115:24, and the second turns ratio is set to 230:24.

[0078] For example, before generating a comparison result by comparing a first voltage value with a set voltage threshold, the method further includes: determining the set voltage threshold based on the operating state of the air conditioner and / or the current power supply rectification mode.

[0079] Here, the operating status of the air conditioner is determined based on the operating status of the air conditioner's fan. When the air conditioner is running in either voltage doubler rectification mode or without voltage doubler rectification mode, it can provide stable DC power to the power module, and the fan is in operation.

[0080] For example, determining a set voltage threshold based on the operating state of the air conditioner and / or the current power supply rectification mode includes: if the air conditioner fan is not running, determining the set voltage threshold as a first set voltage threshold; if the air conditioner is operating in a non-voltage doubler rectification mode, determining the set voltage threshold as a second set voltage threshold; and if the air conditioner is operating in a voltage doubler rectification mode, determining the set voltage threshold as a third set voltage threshold.

[0081] It should be noted that the first voltage threshold is used to determine the power supply rectification mode of the air conditioner when it is first powered on; the second voltage threshold is used to determine whether the power supply rectification mode of the air conditioner needs to be switched to the voltage doubling rectification mode when the air conditioner is running in the non-voltage doubling rectification mode; and the third voltage threshold is used to determine whether the power supply rectification mode of the air conditioner needs to be switched to the non-voltage doubling rectification mode when the air conditioner is running in the voltage doubling rectification mode.

[0082] For example, the third set voltage threshold is greater than the first set voltage threshold, and the first set voltage threshold is greater than the second set voltage threshold.

[0083] It should be noted that, based on the first set voltage threshold, if it is determined that the air conditioner is operating in the voltage doubling rectification mode, when the voltage of the power supply fluctuates significantly, it is necessary to control the air conditioner to operate in the non-voltage doubling rectification mode. Since the third set voltage threshold is set to be greater than the first set voltage threshold in this embodiment, the frequent switching from the air conditioner to the non-voltage doubling rectification mode when it is operating in the voltage doubling rectification mode is avoided.

[0084] It should be noted that, based on the first set voltage threshold, if it is determined that the air conditioner is operating in the non-voltage doubler rectification mode, when the voltage of the power supply drops and fluctuates significantly, it is necessary to control the air conditioner to operate in the voltage doubler rectification mode. Since the first set voltage threshold is set to be greater than the second set voltage threshold in this embodiment, the frequent switching from the non-voltage doubler rectification mode to the voltage doubler rectification mode is avoided.

[0085] Furthermore, if the first voltage value is an AC voltage value, then the first set voltage threshold is set to the first AC voltage threshold, the second set voltage threshold is set to the second AC voltage threshold, and the third set voltage threshold is set to the third AC voltage threshold.

[0086] Furthermore, if the first voltage value is a DC voltage value, then the first set voltage threshold is set to the first DC voltage threshold, the second set voltage threshold is set to the second DC voltage threshold, and the third set voltage threshold is set to the third DC voltage threshold.

[0087] Among them, the third AC voltage threshold is greater than the first AC voltage threshold, and the first AC voltage threshold is greater than the second AC voltage threshold; the third DC voltage threshold is greater than the first DC voltage threshold, and the first DC voltage threshold is greater than the second DC voltage threshold.

[0088] In one application example of this application, if the first voltage value is an AC voltage value, then the first AC voltage threshold is set to AC 141V, the second AC voltage threshold is set to AC 106V, and the third AC voltage threshold is set to AC 152V.

[0089] In one application example of this application, if the first voltage value is a DC voltage value, then the first set voltage threshold is set to DC 200V, the second set voltage threshold is set to DC 150V, and the third set voltage threshold is set to DC 215V.

[0090] It is understood that, based on the working state of the air conditioner and / or the current power supply rectification mode, the embodiments of this application set a variety of set voltage thresholds for determining the power supply rectification mode of the air conditioner, thereby realizing that the air conditioner matches the appropriate power supply rectification mode based on the voltage value of the power supply, and effectively avoiding the frequent switching of the power supply rectification mode of the air conditioner due to reasonable voltage fluctuations of the power supply during operation.

[0091] For example, based on the comparison results, the target power supply rectification mode of the air conditioner is determined, including:

[0092] Based on the comparison results, if the first voltage value is greater than or equal to the set voltage threshold, the target power supply rectification mode of the air conditioner is determined to be the non-voltage doubler rectification mode; or, based on the comparison results, if the first voltage value is determined to be less than the set voltage threshold, and the air conditioner is currently operating in voltage doubler rectification mode or the air conditioner's fan is not running, the target power supply rectification mode of the air conditioner is determined to be the voltage doubler rectification mode; or, based on the comparison results, if the first voltage value is determined to be less than the set voltage threshold, and the air conditioner is currently operating in the non-voltage doubler rectification mode, the first voltage value is continuously acquired within a set time period, and the continuously acquired first voltage value is compared with the set voltage threshold to generate a comparison result set; based on the comparison result set, the target power supply rectification mode of the air conditioner is determined.

[0093] It should be noted that when the air conditioner's fan is not running, if the first voltage value is greater than or equal to the first set voltage threshold, the target power supply rectification mode of the air conditioner is determined to be the non-voltage multiplier rectification mode; when the air conditioner is running in the voltage multiplier rectification mode, if the first voltage value is greater than or equal to the third set voltage threshold, the power supply rectification mode of the air conditioner is determined to switch to the non-voltage multiplier rectification mode; when the air conditioner is running in the non-voltage multiplier rectification mode, if the first voltage value is greater than or equal to the second set voltage threshold, the air conditioner is determined to remain in the non-voltage multiplier rectification mode.

[0094] It is understood that, based on the comparison results of the first voltage value being greater than or equal to the first set voltage threshold, the embodiment of this application directly determines that the target power supply rectification mode of the air conditioner is the non-voltage doubler rectification mode.

[0095] It should be noted that when the air conditioner's fan is not running, if the first voltage value is less than the first set voltage threshold, the target power supply rectification mode of the air conditioner is determined to be the voltage doubling rectification mode; when the air conditioner is running in the voltage doubling rectification mode, if the first voltage value is less than the third set voltage threshold, the air conditioner is determined to continue to operate in the voltage doubling rectification mode.

[0096] It should be noted that when the air conditioner is running in non-voltage doubler rectification mode, the rectified DC voltage will increase significantly when the air conditioner switches to voltage doubler rectification mode. If a false detection fault occurs in the first voltage value, the actual DC voltage value after rectification by the power supply may be greater than or equal to the second set voltage threshold. However, if the comparison result shows that the first voltage value is less than the second set voltage threshold, the air conditioner may mistakenly switch to voltage doubler rectification mode. In voltage doubler rectification mode, the rectified DC voltage value may exceed the fan's operating requirements and the voltage withstand rating of the voltage doubler rectification circuit, causing an overvoltage fault in the air conditioner. In severe cases, it may damage the voltage doubler rectification circuit and other components.

[0097] It is understood that when the air conditioner is running in the non-voltage doubler rectification mode, the embodiments of this application continuously acquire the first voltage value within a set time period, and determine the air conditioner to switch to the voltage doubler rectification mode based on the comparison result set of the continuously acquired first voltage value and the set voltage threshold. This effectively avoids the air conditioner from being mistakenly switched to the voltage doubler rectification mode, which could cause overvoltage faults and damage to the voltage doubler rectification circuit and other components.

[0098] It is understandable that when an air conditioner is running in voltage doubling rectification mode, if the air conditioner is mistakenly switched to voltage doubling rectification mode, the rectified DC voltage value will be significantly reduced, which may not meet the fan operation requirements and cause the air conditioner to have an undervoltage fault. The undervoltage fault will not directly cause damage to the voltage doubling rectification circuit and other components.

[0099] Preferably, the duration is set to 5 seconds.

[0100] For example, based on the comparison result set, the target power supply rectification mode of the air conditioner is determined, including:

[0101] Based on the comparison result set, if it is determined that the first voltage value continuously acquired within the set time period is less than the set voltage threshold, then the target power supply rectification mode of the air conditioner is determined to be the voltage doubling rectification mode; or, based on the comparison result set, if it is determined that there is a first voltage value greater than or equal to the set voltage threshold within the set time period, then the target power supply rectification mode of the air conditioner is determined to be the non-voltage doubling rectification mode.

[0102] It is understandable that if the first voltage value continuously obtained within the set time period is less than the set voltage threshold, it means that there is no false detection of the first voltage value of the air conditioner and the voltage of the power supply has dropped significantly and continuously. Therefore, the target power supply rectification mode of the air conditioner is determined to be the voltage doubler rectification mode.

[0103] It is understandable that if a first voltage value greater than or equal to the set voltage threshold is found within the set time period, it indicates that the first voltage value of the air conditioner may be a false detection, or that the voltage of the power supply has experienced a momentary drop and fluctuation, and the air conditioner is determined to continue operating in the non-voltage doubler rectification mode.

[0104] For example, the control of the air conditioner to operate in a target power rectification mode includes: if it is determined that the target power rectification mode is inconsistent with the current power rectification mode of the air conditioner, then controlling the air conditioner's fan to stop operating, and after switching to the target power rectification mode, controlling the air conditioner's fan to start.

[0105] It should be noted that after the air conditioner fan stops running, the process also includes disconnecting the main relay.

[0106] Here, the main relay is connected to the power supply terminal of the rectifier circuit and is usually located in the indoor unit of the air conditioner. It is used to control the power supply to the main load of the air conditioner. After the main relay is closed, the rectified DC power supplies the power module to start the fan.

[0107] It is understandable that if the target power supply rectification mode is determined to be the non-voltage doubler rectification mode and the current power supply rectification mode of the air conditioner is the voltage doubler rectification mode, then switching to the target power supply rectification mode includes: disconnecting the voltage doubler rectification circuit and closing the non-voltage doubler rectification circuit; and switching the transformer ratio of the air conditioner from the second ratio to the first ratio.

[0108] It is understandable that if the target power supply rectification mode is determined to be voltage doubler rectification mode and the current power supply rectification mode of the air conditioner is non-voltage doubler rectification mode, then switching to the target power supply rectification mode includes: disconnecting the non-voltage doubler rectification circuit and closing the voltage doubler rectification circuit; and switching the transformer ratio of the air conditioner from the first ratio to the second ratio.

[0109] In one application of this application, the voltage doubler rectifier circuit and the non-voltage doubler rectifier circuit can be turned on and off based on the switching transistor.

[0110] In one application example of this application, the voltage doubler rectifier circuit and the non-voltage doubler rectifier circuit can be turned on and off based on relays.

[0111] It should be noted that before controlling the air conditioner's fan to start, the following steps are also required:

[0112] Complete the charging of the electrolytic capacitors in the rectifier circuit;

[0113] Close the main relay of the air conditioner.

[0114] Here, the electrolytic capacitor is placed at the output of the rectifier circuit to stabilize the DC voltage output by the rectifier circuit. Since the DC voltage output by the rectifier circuit is different when the air conditioner is running in non-voltage doubler rectification mode or voltage doubler rectification mode, the voltage across the electrolytic capacitor is different when it is fully charged. Therefore, it is necessary to wait for the electrolytic capacitor to finish charging before proceeding with subsequent steps to ensure a stable DC output after rectification.

[0115] In one application example of this application, a structural schematic diagram of an air conditioner is provided, such as... Figure 2 As shown, the air conditioner includes: a first power supply bus 201, a second power supply bus 202, a transformer 203, a thermistor 204, a main relay 205, a low-voltage rectifier circuit 206, a low-voltage control element 207, a first switching element 208, a second switching element 209, a voltage doubler rectifier circuit 210, a voltage doubler rectifier circuit 211, an electrolytic capacitor 212, a first DC bus 213, a second DC bus 214, and a main load 215. The first power supply bus 201 is the live wire, and the second power supply bus 202 is the neutral wire, used to transmit power. When the air conditioner is powered on, the AC voltage value between the first power supply bus 201 and the second power supply bus 202 is detected. The first power supply bus 201 and the second power supply bus 202 are respectively connected to the power supply terminals of transformer 203, thermistor 204, and main relay 205. Transformer 203 sets the transformation ratio based on the power supply rectification mode, and outputs the power supply after stepping down to the low-voltage rectifier circuit 206. The low-voltage AC power is rectified by the low-voltage rectifier circuit 206 and then supplied to the low-voltage control element 207 of the air conditioner. The output terminal of the first switching element 208 is connected to the power supply terminal of the non-voltage doubler rectifier circuit 210 and is used to control the conduction and disconnection of the non-voltage doubler rectifier circuit 210. The output terminal of the second switching element 209 is connected to the power supply terminal of the voltage doubler rectifier circuit 211 and is used to control the conduction and disconnection of the voltage doubler rectifier circuit 211. The output terminals of the voltage doubler rectifier circuit 210 and the voltage doubler rectifier circuit 211 are connected to the main load 215 via the first DC bus 213 and the second DC bus 214. When the air conditioner is running in the voltage doubler rectifier mode, the DC power output by the voltage doubler rectifier circuit 210 supplies power to the main load 215; when the air conditioner is running in the voltage doubler rectifier mode, the DC power output by the voltage doubler rectifier circuit 211 supplies power to the main load 215. The output terminal of the thermistor 204 is connected to the input terminals of the first switching element 208 and the second switching element 209, respectively. The output terminal of the main relay 205 is connected to the input terminals of the first switching element 208 and the second switching element 209, respectively. The output terminals of the voltage doubler rectifier circuit 210 and the voltage doubler rectifier circuit 211 are also connected to the electrolytic capacitor 212. When the air conditioner is powered on for the first time or after switching the power supply rectification mode, the thermistor 204 plays a protective role. The power supply is rectified into DC power by the thermistor 204 to charge the electrolytic capacitor 212. After the electrolytic capacitor 212 is fully charged, the main relay 205 closes, and the DC power is supplied to the main load 215 through the first DC bus 213 and the second DC bus 214.

[0116] Here, the air conditioner also detects the DC voltage value between the first DC bus 213 and the second DC bus 214; the first switching element 208 and the second switching element 209 can be relays or switching transistors; the main load 215 includes at least a fan and a power module for controlling the power supply voltage of the fan.

[0117] In one application example of this application, a control method for an air conditioner is provided, such as... Figure 3 As shown.

[0118] The method includes:

[0119] Step 301: Obtain the AC voltage value Vac or the rectified DC voltage value Vdc of the power supply.

[0120] Here, the AC voltage value Vac is the effective value of the AC voltage.

[0121] Step 302: Determine if the air conditioner is being powered on for the first time. If yes, proceed to step 303; otherwise, proceed to step 305.

[0122] Here, if the air conditioner is being powered on for the first time, the power supply rectification mode of the air conditioner is determined; if the air conditioner is already in operation, it continues to operate.

[0123] Step 303: Close the rectifier circuit without voltage doubler.

[0124] Here, the closed rectifier circuit without voltage doubler is used to easily obtain the rectified DC voltage value Vdc.

[0125] Step 304: Determine if the AC voltage value Vac ≥ AC 141V, or determine if the DC voltage value Vdc ≥ DC 300V. If yes, proceed to step 310; otherwise, proceed to step 312.

[0126] Here, the power supply rectification mode of the air conditioner is determined based on the obtained AC voltage value Vac or DC voltage value Vdc.

[0127] Step 305: Determine whether the air conditioner is operating in voltage doubler rectification mode. If yes, proceed to step 306; otherwise, proceed to step 308.

[0128] Step 306: Determine if the AC voltage value Vac ≥ AC 152V, or determine if the DC voltage value Vdc ≥ DC 315V. If yes, proceed to step 307; otherwise, proceed to step 316.

[0129] Here, when the air conditioner is running in voltage doubling rectification mode, if the first voltage value obtained indicates that the voltage of the power supply has increased significantly, the air conditioner switches to non-voltage doubling rectification mode.

[0130] Step 307: Disconnect the main relay, and the fan will stop running.

[0131] Here, after the fan stops running, the electrolytic capacitor in the rectifier circuit discharges.

[0132] Step 308: Determine whether the AC voltage value Vac < AC 106V and lasts for 5s, or the DC voltage value Vdc < DC 150V and lasts for 5s. If so, execute Step 309; if not, execute Step 316.

[0133] Here, when the air conditioner operates in the non-doubling rectification mode, if the obtained first voltage value indicates a continuous and significant voltage drop and fluctuation of the power supply, the air conditioner switches to the doubling rectification mode for operation.

[0134] Here, determining that the AC voltage value Vac < AC 106V and lasts for 5s, or the DC voltage value Vdc < DC 150V and lasts for 5s effectively avoids the air conditioner being mis-switched to the doubling rectification mode due to misjudgment, resulting in overvoltage faults in the air conditioner and, in severe cases, damaging the doubling rectification circuit and other components.

[0135] Step 309: Disconnect the main relay and stop the fan.

[0136] Here, after the fan stops running, the electrolytic capacitor of the rectification circuit discharges.

[0137] Step 310: Control the air conditioner to operate in the non-doubling rectification mode.

[0138] Step 311: Disconnect the doubling rectification circuit and close the non-doubling rectification circuit.

[0139] Here, if the air conditioner is powered on for the first time, the non-doubling rectification circuit is already closed at this time.

[0140] Step 312: Control the air conditioner to operate in the doubling rectification mode.

[0141] Step 313: Disconnect the non-doubling rectification circuit and close the doubling rectification circuit.

[0142] Step 314: Complete the charging of the electrolytic capacitor of the rectification circuit.

[0143] Here, when the voltage across the electrolytic capacitor no longer increases, the electrolytic capacitor is fully charged and the rectification circuit can output stably.

[0144] Step 315: Close the main relay and start the fan.

[0145] Step 316: Perform protection control on the air conditioner.

[0146] Here, when the air conditioner is operating, the air conditioner sets fault guidance and protection measures. When faults such as overvoltage or undervoltage occur in the air conditioner, corresponding protection measures are executed.

[0147] In order to implement the method of the embodiments of this application, the embodiments of this application also provide a control device for an air conditioner, which corresponds to the control method described above, and the steps in the embodiments of the control method described above are also fully applicable to the embodiments of this device.

[0148] like Figure 4 As shown in the figure, this application embodiment provides a control device for an air conditioner, the device including: an acquisition module 401, a comparison module 402, a determination module 403, and a control module 404. The acquisition module 401 is used to acquire a first voltage value of the air conditioner, the first voltage value including: the AC voltage value of the power supply to the air conditioner or the DC voltage value after rectification of the power supply; the comparison module 402 is used to compare the first voltage value with a set voltage threshold to generate a comparison result; the determination module 403 is used to determine the target power supply rectification mode of the air conditioner based on the comparison result; the control module 404 is used to control the air conditioner to operate in the target power supply rectification mode; wherein, the target power supply rectification mode is a non-voltage doubler rectification mode or a voltage doubler rectification mode, and the ratio of the DC voltage value to the AC voltage value in the non-voltage doubler rectification mode is less than the ratio of the DC voltage value to the AC voltage value in the voltage doubler rectification mode.

[0149] In some embodiments, the determining module 403 is further configured to determine a set voltage threshold based on the operating state of the air conditioner and / or the current power supply rectification mode.

[0150] In some embodiments, the determining module 403 is further configured to determine a set voltage threshold based on the operating state of the air conditioner and / or the current power supply rectification mode, including: if the air conditioner fan is not running, then determining the set voltage threshold as a first set voltage threshold; if the air conditioner is operating in a non-voltage doubler rectification mode, then determining the set voltage threshold as a second set voltage threshold; if the air conditioner is operating in a voltage doubler rectification mode, then determining the set voltage threshold as a third set voltage threshold.

[0151] In some embodiments, the determining module 403 is further configured to: if the first voltage value is an AC voltage value, then set the first set voltage threshold to a first AC voltage threshold, the second set voltage threshold to a second AC voltage threshold, and the third set voltage threshold to a third AC voltage threshold; if the first voltage value is a DC voltage value, then set the first set voltage threshold to a first DC voltage threshold, the second set voltage threshold to a second DC voltage threshold, and the third set voltage threshold to a third DC voltage threshold; wherein the third AC voltage threshold is greater than the first AC voltage threshold, the first AC voltage threshold is greater than the second AC voltage threshold, the third DC voltage threshold is greater than the first DC voltage threshold, and the first DC voltage threshold is greater than the second DC voltage threshold.

[0152] In some embodiments, the rectifier circuit of the air conditioner includes two branches: a non-voltage-multiplying rectifier circuit and a voltage-multiplying rectifier circuit. The control module 404 is further configured to: control the voltage-multiplying rectifier circuit to be turned on and control the non-voltage-multiplying rectifier circuit to be turned off if the air conditioner is controlled to operate in voltage-multiplying rectifier mode; set the transformer ratio of the air conditioner to a first ratio; control the non-voltage-multiplying rectifier circuit to be turned on and control the voltage-multiplying rectifier circuit to be turned off if the air conditioner is controlled to operate in voltage-multiplying rectifier mode; and set the transformer ratio of the air conditioner to a second ratio; wherein the rectified secondary voltage of the transformer is used to provide the control power supply for the air conditioner, and the first ratio is smaller than the second ratio.

[0153] In some embodiments, the determining module 403 is specifically used to: based on the comparison results, if the first voltage value is greater than or equal to a set voltage threshold, determine that the target power supply rectification mode of the air conditioner is a voltage doubler rectification mode; or, based on the comparison results, if it is determined that the first voltage value is less than the set voltage threshold, and the air conditioner is currently operating in a voltage doubler rectification mode or the air conditioner's fan is not running, determine that the target power supply rectification mode of the air conditioner is a voltage doubler rectification mode; or, based on the comparison results, if it is determined that the first voltage value is less than the set voltage threshold, and the air conditioner is currently operating in a voltage doubler rectification mode, continuously acquire the first voltage value within a set time period, compare the continuously acquired first voltage value with the set voltage threshold, and generate a comparison result set; and based on the comparison result set, determine the target power supply rectification mode of the air conditioner.

[0154] In some embodiments, the determining module 403 is used to determine the target power supply rectification mode of the air conditioner based on the comparison result set, including: based on the comparison result set, if it is determined that the first voltage value continuously acquired within a set time period is less than the set voltage threshold, then the target power supply rectification mode of the air conditioner is determined to be a voltage doubling rectification mode; or, based on the comparison result set, if it is determined that there is a first voltage value greater than or equal to the set voltage threshold within a set time period, then the target power supply rectification mode of the air conditioner is determined to be a non-voltage doubling rectification mode.

[0155] In some embodiments, the control module 404 is specifically used to: if it is determined that the target power rectification mode is inconsistent with the current power rectification mode of the air conditioner, control the air conditioner fan to stop running, and control the air conditioner fan to start after switching to the target power rectification mode.

[0156] It should be noted that the control device provided in the above embodiments is only illustrated by the division of the above program modules. In actual applications, the above processing can be assigned to different program modules as needed, that is, the internal structure of the device can be divided into different program modules to complete all or part of the processing described above. In addition, the control device and control method embodiments provided in the above embodiments belong to the same concept, and their specific implementation process can be found in the method embodiments, which will not be repeated here.

[0157] Based on the hardware implementation of the above program modules, and in order to implement the method of the embodiments of this application, the embodiments of this application also provide an air conditioner. Figure 5 This is only an exemplary structure of the air conditioner, not the entire structure; it can be implemented as needed. Figure 5 The structure shown may be part or all of the structure.

[0158] like Figure 5 As shown, the air conditioner 500 provided in this embodiment includes at least one processor 501, a memory 502, a user interface 503, and at least one network interface 504. The various components in the air conditioner 500 are coupled together via a bus system 505. It can be understood that the bus system 505 is used to implement communication between these components. In addition to a data bus, the bus system 505 also includes a power bus, a control bus, and a status signal bus. However, for clarity, in... Figure 5 The general designated all buses as Bus System 505.

[0159] The user interface 503 may include a monitor, keyboard, mouse, trackball, click wheel, buttons, touchpad, or touch screen.

[0160] The memory 502 in this embodiment is used to store various types of data to support the operation of the air conditioner 500. Examples of such data include any computer program used to operate on the air conditioner 500.

[0161] The control method disclosed in this application embodiment can be applied to or implemented by processor 501. Processor 501 may be an integrated circuit chip with signal processing capabilities. In the implementation process, each step of the control method can be completed by the integrated logic circuit of the hardware in processor 501 or by instructions in software form. The processor 501 mentioned above may be a general-purpose processor, a digital signal processor (DSP), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. Processor 501 can implement or execute the methods, steps and logic block diagrams disclosed in the embodiments of this application. The general-purpose processor may be a microprocessor or any conventional processor, etc. The steps of the method disclosed in the embodiments of this application can be directly reflected as being executed by a hardware decoding processor, or being executed by a combination of hardware and software modules in the decoding processor. The software module may be located in a storage medium, which is located in memory 502. Processor 501 reads the information in memory 502 and combines its hardware to complete the steps of the control method provided in the embodiments of this application.

[0162] In an exemplary embodiment, the air conditioner 500 may be implemented by one or more application-specific integrated circuits (ASICs), DSPs, programmable logic devices (PLDs), complex programmable logic devices (CPLDs), FPGAs, general-purpose processors, controllers, microcontrollers (MCUs), microprocessors, or other electronic components to perform the aforementioned control method.

[0163] It is understood that memory 502 can be volatile memory or non-volatile memory, or both. Non-volatile memory can be read-only memory (ROM), programmable read-only memory (PROM), erasable programmable read-only memory (EPROM), electrically erasable programmable read-only memory (EEPROM), ferromagnetic random access memory (FRAM), flash memory, magnetic surface memory, optical disc, or compact disc read-only memory (CD-ROM); magnetic surface memory can be disk storage or magnetic tape storage. Volatile memory can be random access memory (RAM), which is used as an external cache. By way of example, but not limitation, many forms of RAM are available, such as Static Random Access Memory (SRAM), Synchronous Static Random Access Memory (SSRAM), Dynamic Random Access Memory (DRAM), Synchronous Dynamic Random Access Memory (SDRAM), Double Data Rate Synchronous Dynamic Random Access Memory (DDRSDRAM), Enhanced Synchronous Dynamic Random Access Memory (ESDRAM), Sync Link Dynamic Random Access Memory (SLDRAM), and Direct Rambus Random Access Memory (DRRAM).The memories described in the embodiments of this application are intended to include, but are not limited to, these and any other suitable types of memories.

[0164] For example, the rectifier circuit of the air conditioner 500 includes two branches: a non-voltage doubler rectifier circuit and a voltage doubler rectifier circuit. The non-voltage doubler rectifier circuit or the voltage doubler rectifier circuit is used to rectify the power supply of the air conditioner into DC power. When the air conditioner 500 is running, one of the non-voltage doubler rectifier circuit and the voltage doubler rectifier circuit is turned on.

[0165] Understandably, the rectifier circuit of the air conditioner 500 includes two branches: a non-voltage-doubling rectifier circuit and a voltage-doubling rectifier circuit, to achieve either a non-voltage-doubling rectifier mode or a voltage-doubling rectifier mode. Since the air conditioner only supports operation in one rectification mode, the non-voltage-doubling rectifier circuit and the voltage-doubling rectifier circuit cannot be activated simultaneously.

[0166] In an exemplary embodiment, this application also provides a storage medium, namely a computer storage medium, specifically a computer-readable storage medium, such as a memory 502 that stores a computer program. This computer program can be executed by the processor 501 of the air conditioner 500 to complete the steps described in the control method of this application embodiment. The computer-readable storage medium can be a ROM, PROM, EPROM, EEPROM, Flash Memory, magnetic surface memory, optical disc, or CD-ROM, etc.

[0167] In an exemplary embodiment, this application also provides a computer program product, including a computer program that can be executed by the processor 501 of the air conditioner 500 to complete the steps described in the method of this application embodiment.

[0168] It should be noted that terms such as "first" and "second" are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence.

[0169] Furthermore, the technical solutions described in the embodiments of this application can be combined arbitrarily without conflict.

[0170] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A control method for an air conditioner, characterized in that, The method includes: Obtain a first voltage value of the air conditioner, the first voltage value including: the AC voltage value of the power supply of the air conditioner or the DC voltage value after rectification of the power supply; Compare the first voltage value with the set voltage threshold to generate a comparison result; Based on the comparison results, the target power supply rectification mode of the air conditioner is determined; Control the air conditioner to operate in the target power supply rectification mode; The target power supply rectification mode is either a non-voltage multiplier rectification mode or a voltage multiplier rectification mode. In the non-voltage multiplier rectification mode, the ratio of the DC voltage value to the AC voltage value is less than the ratio of the DC voltage value to the AC voltage value in the voltage multiplier rectification mode.

2. The method according to claim 1, characterized in that, Before generating a comparison result by comparing the first voltage value with a set voltage threshold, the method further includes: The set voltage threshold is determined based on the operating status of the air conditioner and / or the current power supply rectification mode.

3. The method according to claim 2, characterized in that, Determining the set voltage threshold based on the air conditioner's operating state and / or current power supply rectification mode includes: If the air conditioner's fan is not running, then the set voltage threshold is determined to be the first set voltage threshold; If the air conditioner is operating in the non-voltage doubler rectification mode, then the set voltage threshold is determined to be the second set voltage threshold; If the air conditioner is operating in the voltage doubler rectification mode, then the set voltage threshold is determined to be the third set voltage threshold.

4. The method according to claim 3, characterized in that, The method further includes: If the first voltage value is the AC voltage value, then the first set voltage threshold is set to the first AC voltage threshold, the second set voltage threshold is set to the second AC voltage threshold, and the third set voltage threshold is set to the third AC voltage threshold. If the first voltage value is the DC voltage value, then the first set voltage threshold is set to the first DC voltage threshold, the second set voltage threshold is set to the second DC voltage threshold, and the third set voltage threshold is set to the third DC voltage threshold. Wherein, the third AC voltage threshold is greater than the first AC voltage threshold, and the first AC voltage threshold is greater than the second AC voltage threshold; the third DC voltage threshold is greater than the first DC voltage threshold, and the first DC voltage threshold is greater than the second DC voltage threshold.

5. The method according to claim 1, characterized in that, The rectifier circuit of the air conditioner includes two branches: a non-voltage doubler rectifier circuit and a voltage doubler rectifier circuit. The non-voltage doubler rectifier circuit or the voltage doubler rectifier circuit is used to rectify the power supply into direct current. The method further includes: If the air conditioner is controlled to operate in the voltage doubler rectification mode, then the voltage doubler rectification circuit is controlled to be turned on, and the non-voltage doubler rectification circuit is controlled to be turned off; the turns ratio of the air conditioner's transformer is set to the first turns ratio; If the air conditioner is controlled to operate in the non-voltage doubler rectifier mode, then the non-voltage doubler rectifier circuit is controlled to be turned on, and the voltage doubler rectifier circuit is controlled to be turned off; the transformer ratio of the air conditioner is set to the second ratio. The secondary voltage of the transformer is rectified and used to provide control power for the air conditioner, and the first transformation ratio is smaller than the second transformation ratio.

6. The method according to claim 1, characterized in that, Determining the target power supply rectification mode of the air conditioner based on the comparison results includes: Based on the comparison results, if the first voltage value is greater than or equal to the set voltage threshold, then the target power supply rectification mode of the air conditioner is determined to be the non-voltage doubler rectification mode; or... Based on the comparison results, if it is determined that the first voltage value is less than the set voltage threshold, and the air conditioner is currently operating in the voltage doubler rectification mode or the air conditioner's fan is not running, then the target power supply rectification mode of the air conditioner is determined to be the voltage doubler rectification mode; or, Based on the comparison results, if it is determined that the first voltage value is less than the set voltage threshold, and the air conditioner is currently operating in the non-voltage doubler rectification mode, then the first voltage value is continuously acquired within a set time period, and the continuously acquired first voltage value is compared with the set voltage threshold to generate a comparison result set; based on the comparison result set, the target power supply rectification mode of the air conditioner is determined.

7. The method according to claim 6, characterized in that, Determining the target power supply rectification mode of the air conditioner based on the comparison result set includes: Based on the comparison result set, if it is determined that the first voltage value continuously acquired within the set time period is less than the set voltage threshold, then the target power supply rectification mode of the air conditioner is determined to be the voltage multiplier rectification mode; or... Based on the comparison result set, if it is determined that there is a first voltage value greater than or equal to the set voltage threshold within the set time period, then the target power supply rectification mode of the air conditioner is determined to be the non-voltage doubler rectification mode.

8. The method according to claim 1, characterized in that, The control of the air conditioner to operate in the target power supply rectification mode includes: If it is determined that the target power rectification mode is inconsistent with the current power rectification mode of the air conditioner, the air conditioner's fan will be stopped, and after switching to the target power rectification mode, the air conditioner's fan will be started.

9. A control device for an air conditioner, characterized in that, The device includes: The acquisition module is used to acquire a first voltage value of the air conditioner, the first voltage value including: the AC voltage value of the power supply of the air conditioner or the DC voltage value after rectification of the power supply; The comparison module is used to compare the first voltage value with a set voltage threshold and generate a comparison result; A determining module is used to determine the target power supply rectification mode of the air conditioner based on the comparison results; The control module is used to control the air conditioner to operate in the target power supply rectification mode; The target power supply rectification mode is either a non-voltage multiplier rectification mode or a voltage multiplier rectification mode. In the non-voltage multiplier rectification mode, the ratio of the DC voltage value to the AC voltage value is less than the ratio of the DC voltage value to the AC voltage value in the voltage multiplier rectification mode.

10. An air conditioner, characterized in that, include: A processor and a memory for storing a computer program capable of running on the processor, wherein the processor, when running the computer program, performs the steps of the method according to any one of claims 1 to 8.

11. The air conditioner according to claim 10, characterized in that, The rectifier circuit of the air conditioner includes two branches: a non-voltage doubler rectifier circuit and a voltage doubler rectifier circuit. The non-voltage doubler rectifier circuit or the voltage doubler rectifier circuit is used to rectify the power supply of the air conditioner into DC power. When the air conditioner is running, one of the non-voltage doubler rectifier circuit and the voltage doubler rectifier circuit is turned on.

12. A computer storage medium storing a computer program, characterized in that, When the computer program is executed by a processor, it implements the steps of the method according to any one of claims 1 to 8.

13. A computer program product, comprising a computer program, characterized in that, When the computer program is executed by a processor, it implements the steps of the method according to any one of claims 1 to 8.

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