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; if the air conditioner operates in the voltage doubling rectifying mode, the first voltage value is compared with a first set voltage threshold value, and a first comparison result is generated; and based on the first comparison result, the air conditioner is controlled to operate in the non-voltage-doubling rectification mode. The air conditioner is provided with a non-voltage-doubling rectification mode and a voltage-doubling rectification mode to adapt to different power supply voltages, and when the air conditioner runs, if the power supply voltages fluctuate, one-way switching from the voltage-doubling rectification mode to the non-voltage-doubling rectification mode is supported based on the voltage self-recognition function of the air conditioner, and the non-voltage-doubling rectification mode is switched to the non-voltage-doubling rectification mode. The overvoltage fault of the air conditioner caused by mistaken switching is effectively avoided, meanwhile, the power supply voltage adaptation capacity of the air conditioner is improved, and stable operation of the air conditioner is guaranteed.

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 power supply 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] If the air conditioner is operating in voltage doubling rectification mode, the first voltage value is compared with the first set voltage threshold to generate a first comparison result;

[0009] Based on the first comparison result, the air conditioner is controlled to operate in a non-voltage doubler rectification mode;

[0010] In the non-voltage-doubling 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-doubling rectification mode.

[0011] In some implementations, controlling the air conditioner to operate in a non-voltage doubler rectification mode based on the first comparison result includes:

[0012] Based on the first comparison result, if it is determined that the first voltage value is greater than or equal to the first set voltage threshold, then the air conditioner is controlled to operate in a non-voltage doubler rectification mode.

[0013] 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:

[0014] 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.

[0015] If the air conditioner is controlled to operate in the voltage doubling rectification mode, then the voltage doubling rectification circuit is controlled to be turned on, and the non-voltage doubling rectification circuit is controlled to be turned off.

[0016] In some implementations, controlling the air conditioner to operate in a non-voltage doubler rectification mode includes:

[0017] Control the air conditioner's fan to stop running;

[0018] Disconnect the voltage doubler rectifier circuit and close the non-voltage doubler rectifier circuit;

[0019] The transformer ratio of the air conditioner is switched from the first ratio to the second ratio;

[0020] Start the air conditioner's fan;

[0021] 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.

[0022] In some implementations, the method further includes:

[0023] If the air conditioner's fan is not started, a second comparison result is generated by comparing the first voltage value with the second set voltage threshold.

[0024] Based on the second comparison result, the power supply rectification mode of the air conditioner is determined;

[0025] Based on the determined power supply rectification mode, the fan of the air conditioner is controlled to start.

[0026] In some implementations, determining the power supply rectification mode of the air conditioner based on the second comparison result includes:

[0027] Based on the second comparison result, if it is determined that the first voltage value is greater than or equal to the second set voltage threshold, then the air conditioner is controlled to operate in the non-voltage doubler rectification mode; or,

[0028] Based on the second comparison result, if it is determined that the first voltage value is less than the second set voltage threshold, then the air conditioner is controlled to operate in the voltage doubling rectification mode.

[0029] In some implementations, if the first voltage value is the AC voltage value, then the first set voltage threshold is set to a first AC voltage threshold, and the second set voltage threshold is set to a second AC voltage threshold.

[0030] If the first voltage value is the DC voltage value, then the first set voltage threshold is set to the first DC voltage threshold, and the second set voltage threshold is set to the second DC voltage threshold;

[0031] Wherein, the first AC voltage threshold is greater than the second AC voltage threshold; the first DC voltage threshold is greater than the second DC voltage threshold.

[0032] Secondly, embodiments of this application provide a control device for an air conditioner, the device comprising:

[0033] 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;

[0034] The comparison module is used to compare the first voltage value with a first set voltage threshold and generate a first comparison result if the air conditioner is operating in a voltage doubler rectification mode.

[0035] The control module is used to control the air conditioner to operate in a non-voltage doubler rectification mode based on the first comparison result;

[0036] In the non-voltage-doubling 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-doubling rectification mode.

[0037] 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.

[0038] 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.

[0039] Fourthly, embodiments of this application provide a computer storage medium storing a computer program, which, when executed by a processor, implements the steps of the method described in the first aspect.

[0040] Fifthly, embodiments of this application provide a computer program product, including a computer program that, when executed by a processor, implements the steps of the method described in the first aspect.

[0041] 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 air conditioner's power supply or the DC voltage value after rectification of the power supply; if the air conditioner is running in voltage doubling rectification mode, the first voltage value is compared with a first set voltage threshold to generate a first comparison result; based on the first comparison result, the air conditioner is controlled to run in a non-voltage doubling rectification mode; wherein, the ratio of the DC voltage value to the AC voltage value in the non-voltage doubling rectification mode is less than the ratio of the DC voltage value to the AC voltage value in the voltage doubling rectification mode. Thus, the air conditioner is set to non-voltage doubling rectification mode and voltage doubling 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 unidirectional switching from voltage doubling rectification mode to non-voltage doubling rectification mode. This effectively avoids overvoltage faults caused by erroneous switching, improves the air conditioner's power supply voltage adaptability, and ensures stable operation of the air conditioner. Attached Figure Description

[0042] Figure 1 This is a schematic flowchart of a control method for an air conditioner according to an embodiment of this application;

[0043] Figure 2 This is a schematic diagram of the structure of an air conditioner in one application example of this application;

[0044] Figure 3 This is a flowchart illustrating a control method for an air conditioner according to another embodiment of this application;

[0045] Figure 4 This is a flowchart illustrating a control method for an air conditioner in one application example of this application;

[0046] Figure 5 This is a schematic diagram of the control device of the air conditioner according to an embodiment of this application;

[0047] Figure 6 This is a schematic diagram of the structure of an air conditioner according to an embodiment of this application. Detailed Implementation

[0048] The present application will now be described in further detail with reference to the accompanying drawings and embodiments.

[0049] 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.

[0050] 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.

[0051] like Figure 1 As shown, the control methods for air conditioners include:

[0052] 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.

[0053] 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.

[0054] 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.

[0055] Step 102: If the air conditioner is operating in voltage doubling rectification mode, then compare the first voltage value with the first set voltage threshold to generate the first comparison result.

[0056] Here, when the air conditioner is running, the air conditioner's fan is in working condition.

[0057] For example, the power supply rectification modes of the air conditioner include a non-voltage multiplier rectification mode and 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 that in the voltage multiplier rectification mode.

[0058] 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 control method further includes: if the air conditioner is controlled to operate in 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; if the air conditioner is controlled to operate in voltage doubler rectifier 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.

[0059] 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.

[0060] 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.

[0061] Preferably, the voltage doubler rectifier circuit in this embodiment is a voltage doubler rectifier circuit.

[0062] 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.

[0063] 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.

[0064] Understandably, in step 102, the voltage of the air conditioner's power supply is low, and the air conditioner operates in voltage doubling mode to ensure stable operation of the fan.

[0065] 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.

[0066] It is understood that the air conditioner in this application embodiment is equipped with a non-voltage doubler rectification mode and a voltage doubler rectification mode to adapt to different power supply voltages, thereby increasing the allowable power supply voltage range of the air conditioner and improving the voltage adaptability of the air conditioner.

[0067] Here, the first set voltage threshold is set based on the type of the first voltage value obtained.

[0068] For example, if the first voltage value is an AC voltage value, then the first set voltage threshold is set to the first AC voltage threshold; if the first voltage value is a DC voltage value, then the first set voltage threshold is set to the first DC voltage threshold.

[0069] It is understood that, by collecting the power supply voltage value (i.e., AC voltage value) of the rectifier circuit, the embodiments of this application can indirectly determine whether the rectified DC voltage value meets the operating requirements of the fan.

[0070] Step 103: Based on the first comparison result, control the air conditioner to operate in a non-voltage doubler rectification mode.

[0071] For example, controlling the air conditioner to operate in a non-voltage-doubling rectification mode based on the first comparison result includes: if it is determined that the first voltage value is greater than or equal to the first set voltage threshold based on the first comparison result, then controlling the air conditioner to operate in a non-voltage-doubling rectification mode.

[0072] It is understandable that, due to the wide allowable range of power supply voltage in some areas, significant fluctuations in the power supply voltage may prevent the air conditioner's fan from operating stably. In this embodiment, when the air conditioner operates in voltage doubling mode, based on the first comparison result, if the first voltage value is determined to be greater than or equal to the first set voltage threshold, it indicates that the current power supply voltage has experienced a significant upward fluctuation. The DC voltage output by the rectifier circuit exceeds the voltage required for fan operation, which is detrimental to fan operation control. In this case, the air conditioner is controlled to operate in a non-voltage doubling rectifier mode to reduce the DC voltage output by the rectifier circuit and ensure stable operation of the air conditioner.

[0073] In one application example of this application, if the first voltage value is an AC voltage value, then the first set voltage threshold is set to AC 152V; if the first voltage value is a DC voltage value, then the first set voltage threshold is set to DC 215V.

[0074] Here, the first voltage value obtained is the effective value of the AC voltage of the power supply.

[0075] Understandably, if the air conditioner is operating in voltage doubling rectification mode, and based on the first comparison result, it is determined that the first voltage value is less than the first set voltage threshold, it means that the power supply voltage has not fluctuated significantly, and the air conditioner continues to operate in voltage doubling rectification mode.

[0076] It should be noted that, in this embodiment of the application, if the air conditioner is running in the non-voltage doubler rectification mode, the non-voltage doubler rectification mode will be maintained until the air conditioner stops running; if the voltage of the power supply drops or fluctuates significantly, the power supply rectification mode will not be switched from the non-voltage doubler rectification mode to the voltage doubler rectification mode.

[0077] It is understood that the embodiments of this application are based on the voltage self-identification function of the air conditioner and only support unidirectional switching from voltage doubler rectification mode to non-voltage doubler rectification mode. This effectively avoids the rise of DC voltage after rectification by the air conditioner due to malfunction in switching from non-voltage doubler rectification mode to voltage doubler rectification mode, which can cause overvoltage faults in the air conditioner and, in severe cases, burn out the air conditioner's rectifier circuit and related components.

[0078] For example, controlling the air conditioner to operate in a non-voltage doubler rectification mode includes: stopping the air conditioner's fan; disconnecting the voltage doubler rectification circuit and closing the non-voltage doubler rectification circuit; switching the transformer's turns ratio from a first turns ratio to a second turns ratio; and starting the air conditioner's fan. The rectified secondary voltage of the transformer is used to provide the control power for the air conditioner, and the first turns ratio is smaller than the second turns ratio.

[0079] Understandably, when switching the power supply rectification mode of the air conditioner from voltage doubler rectification mode to non-voltage doubler rectification mode, it is necessary to stop the fan and restart the fan after completing the branch switching of the rectification circuit.

[0080] 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.

[0081] 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.

[0082] It should be noted that, before the step of starting the air conditioner's fan in this embodiment, the following steps are also included:

[0083] Complete the charging of the electrolytic capacitors in the rectifier circuit;

[0084] Close the main relay of the air conditioner.

[0085] 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 differs depending on whether the air conditioner operates in voltage-doubling or voltage-doubled rectifier mode, the voltage across the electrolytic capacitor will differ when it is fully charged. Therefore, after disconnecting the voltage-doubled rectifier circuit and closing the voltage-doubling rectifier circuit, 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.

[0086] 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.

[0087] It should be noted that before disconnecting the voltage doubler rectifier circuit and closing the non-voltage doubler rectifier circuit, the main relay must also be disconnected.

[0088] 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.

[0089] 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.

[0090] It is understandable that when an air conditioner switches to operation in non-voltage doubler rectification mode, it indicates that the voltage of the power supply has fluctuated significantly. The transformer turns ratio is switched to the second turn ratio to reduce the secondary voltage of the transformer, so that the secondary voltage can provide a stable control power supply for low-voltage control components such as the thermostat after rectification.

[0091] 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.

[0092] In one application example of this application, a structural schematic diagram of an air conditioner is provided, such as... Figure 2As 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.

[0093] 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.

[0094] This application provides a control method for an air conditioner when it is first powered on, such as... Figure 3As shown.

[0095] For example, the method includes:

[0096] Step 301: If the air conditioner fan is not started, compare the first voltage value with the second set voltage threshold to generate a second comparison result.

[0097] Here, the second voltage threshold is set based on the type of the first voltage value obtained.

[0098] For example, if the first voltage value is an AC voltage value, then the second set voltage threshold is set to the second AC voltage threshold; if the first voltage value is a DC voltage value, then the second set voltage threshold is set to the second DC voltage threshold.

[0099] Here, if the first voltage value obtained is a DC voltage value, step 201 further includes: closing the non-voltage doubler rectifier circuit and opening the voltage doubler rectifier circuit to obtain the rectified DC voltage value.

[0100] Step 302: Based on the second comparison result, determine the power supply rectification mode of the air conditioner.

[0101] For example, based on the second comparison result, determining the power supply rectification mode of the air conditioner includes:

[0102] Based on the second comparison result, if it is determined that the first voltage value is greater than or equal to the second set voltage threshold, the air conditioner is controlled to operate in a non-voltage doubler rectification mode; or, based on the second comparison result, if it is determined that the first voltage value is less than the second set voltage threshold, the air conditioner is controlled to operate in a voltage doubler rectification mode.

[0103] Understandably, based on the second comparison results, the air conditioner can identify the power supply voltage system of the area where it is used and determine the appropriate power supply rectification mode to adapt to the power supply.

[0104] Here, the first set voltage threshold is greater than the second set voltage threshold.

[0105] Furthermore, the first AC voltage threshold is greater than the second AC voltage threshold; the first DC voltage threshold is greater than the second DC voltage threshold.

[0106] It is understandable that when an air conditioner is running in voltage doubling rectification mode, if the AC voltage value is close to the second AC voltage threshold, the air conditioner can avoid frequently switching to non-voltage doubling mode because the first AC voltage threshold is greater than the second AC voltage threshold.

[0107] Step 303: Based on the determined power supply rectification mode, control the air conditioner fan to start.

[0108] Here, before step 303, the following is also included:

[0109] If it is determined that the air conditioner is operating in voltage doubler rectification mode, disconnect the non-voltage doubler rectification circuit and close the voltage doubler rectification circuit; set the transformer ratio to the first ratio; complete the charging of the electrolytic capacitor in the rectifier circuit; close the main relay of the air conditioner.

[0110] If it is determined that the air conditioner is operating in the non-voltage doubler rectifier mode, disconnect the voltage doubler rectifier circuit and close the non-voltage doubler rectifier circuit; set the transformer ratio to the second ratio; complete the charging of the electrolytic capacitor in the rectifier circuit; close the main relay of the air conditioner.

[0111] In one application example of this application, a control method for an air conditioner is provided, such as... Figure 4 As shown.

[0112] The method includes:

[0113] Step 401: Obtain the AC voltage value Vac or the rectified DC voltage value Vdc of the power supply.

[0114] Here, the AC voltage value Vac is the effective value of the AC voltage.

[0115] Step 402: Determine if the air conditioner is being powered on for the first time. If yes, proceed to step 403; otherwise, proceed to step 405.

[0116] 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.

[0117] Step 403: Close the rectifier circuit without voltage doubler.

[0118] Here, the closed rectifier circuit without voltage doubler is used to easily obtain the rectified DC voltage value.

[0119] Step 404: Determine if the AC voltage value Vac ≥ AC 141V, or determine if the DC voltage value Vdc ≥ DC 200V. If yes, proceed to step 408; otherwise, proceed to step 410.

[0120] Step 405: Determine whether the air conditioner is operating in voltage doubler rectification mode. If yes, proceed to step 406; otherwise, proceed to step 414.

[0121] Here, when the air conditioner is running in the non-voltage doubler rectification mode, it does not support switching to the power supply rectification mode to avoid accidentally switching to the voltage doubler rectification mode, which would cause the DC voltage value Vdc to increase and cause an overvoltage fault in the air conditioner.

[0122] Step 406: Determine if the AC voltage value Vac ≥ AC 152V, or determine if the DC voltage value Vdc ≥ DC 215V. If yes, proceed to step 407; otherwise, proceed to step 414.

[0123] Step 407: Disconnect the main relay, and the fan will stop running.

[0124] Here, after the fan stops running, the electrolytic capacitor in the rectifier circuit discharges.

[0125] Step 408: Control the air conditioner to operate in non-voltage doubler rectification mode.

[0126] Step 409: Disconnect the voltage doubler rectifier circuit and close the non-voltage doubler rectifier circuit.

[0127] Here, if the air conditioner is being powered on for the first time, the voltage doubler rectifier circuit is already closed.

[0128] Step 410: Control the air conditioner to operate in voltage doubler rectification mode.

[0129] Step 411: Disconnect the non-voltage doubler rectifier circuit and close the voltage doubler rectifier circuit.

[0130] Step 412: Complete the charging of the electrolytic capacitor in the rectifier circuit.

[0131] Here, when the voltage across the electrolytic capacitor no longer increases, the electrolytic capacitor is fully charged, and the rectifier circuit can output stably.

[0132] Step 413: Close the main relay and start the fan.

[0133] Step 414: Implement protective controls for the air conditioner.

[0134] Here, when the air conditioner is running, it is equipped with fault guidance and protection measures. When the air conditioner experiences faults such as overvoltage or undervoltage, the corresponding protection measures are implemented.

[0135] 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.

[0136] like Figure 5 As shown in the figure, this application embodiment provides a control device for an air conditioner, the device including: an acquisition module 501, a comparison module 502, and a control module 503. The acquisition module 501 is used to acquire a first voltage value of the air conditioner, the first voltage value including: the AC voltage value of the air conditioner's power supply or the DC voltage value after rectification of the power supply; the comparison module 502 is used to compare the first voltage value with a first set voltage threshold if the air conditioner is operating in a voltage doubling rectification mode, and generate a first comparison result; the control module 503 is used to control the air conditioner to operate in a non-voltage doubling rectification mode based on the first comparison result. In the non-voltage doubling 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 doubling rectification mode.

[0137] In some embodiments, the control module 503 is specifically used to: based on the first comparison result, if it is determined that the first voltage value is greater than or equal to the first set voltage threshold, control the air conditioner to operate in a non-voltage doubler rectification mode.

[0138] 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 503 is also used to control the non-voltage-multiplying rectifier circuit to be turned on and the voltage-multiplying rectifier circuit to be turned off if the air conditioner is controlled to operate in non-voltage-multiplying rectifier mode; and to control the voltage-multiplying rectifier circuit to be turned on and the non-voltage-multiplying rectifier circuit to be turned off if the air conditioner is controlled to operate in voltage-multiplying rectifier mode.

[0139] In some embodiments, the control module 503 controls the air conditioner to operate in a non-voltage doubler rectification mode, including: controlling the air conditioner's fan to stop running; disconnecting the voltage doubler rectification circuit and closing the non-voltage doubler rectification circuit; switching the transformer ratio of the air conditioner from a first ratio to a second ratio; and starting the air conditioner's fan; wherein the secondary voltage of the transformer is rectified to provide the control power for the air conditioner, and the first ratio is less than the second ratio.

[0140] In some embodiments, the comparison module 502 is further configured to compare a first voltage value and a second set voltage threshold to generate a second comparison result if the air conditioner fan is not started.

[0141] In some embodiments, the control module 503 is further configured to determine the power supply rectification mode of the air conditioner based on the second comparison result; and control the air conditioner fan to start based on the determined power supply rectification mode.

[0142] In some embodiments, the control module 503 is further configured to, based on the second comparison result, control the air conditioner to operate in a non-voltage doubler rectification mode if it is determined that the first voltage value is greater than or equal to the second set voltage threshold; or, based on the second comparison result, control the air conditioner to operate in a voltage doubler rectification mode if it is determined that the first voltage value is less than the second set voltage threshold.

[0143] In some embodiments, the comparison module 502 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 and the second set voltage threshold to a second 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 and the second set voltage threshold to a second DC voltage threshold; wherein the first AC voltage threshold is greater than the second AC voltage threshold; and the first DC voltage threshold is greater than the second DC voltage threshold.

[0144] 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 above embodiments, which will not be repeated here.

[0145] 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 6 This is only an exemplary structure of the air conditioner, not the entire structure; it can be implemented as needed. Figure 6 The structure shown may be part or all of the structure.

[0146] like Figure 6 As shown, the air conditioner 600 provided in this embodiment includes at least one processor 601, a memory 602, a user interface 603, and at least one network interface 604. The various components in the air conditioner 600 are coupled together via a bus system 605. It can be understood that the bus system 605 is used to implement communication between these components. In addition to a data bus, the bus system 605 also includes a power bus, a control bus, and a status signal bus. However, for clarity, in... Figure 6 The general designated all buses as Bus System 605.

[0147] The user interface 603 may include a monitor, keyboard, mouse, trackball, click wheel, buttons, touchpad, or touch screen.

[0148] The memory 602 in this embodiment is used to store various types of data to support the operation of the air conditioner 600. Examples of such data include any computer programs used to operate on the air conditioner 600.

[0149] The control method disclosed in this application embodiment can be applied to or implemented by processor 601. Processor 601 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 601 or by instructions in software form. The processor 601 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 601 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 602. Processor 601 reads the information in memory 602 and combines its hardware to complete the steps of the control method provided in the embodiments of this application.

[0150] In an exemplary embodiment, the air conditioner 600 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.

[0151] It is understood that memory 602 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), SyncLink 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.

[0152] For example, the rectifier circuit of the air conditioner 600 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 600 is running, one of the non-voltage doubler rectifier circuit and the voltage doubler rectifier circuit is turned on.

[0153] Understandably, the rectifier circuit of the air conditioner 600 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.

[0154] 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 602 storing a computer program. This computer program can be executed by the processor 601 of the air conditioner 600 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.

[0155] In an exemplary embodiment, this application also provides a computer program product, including a computer program that can be executed by the processor 601 of the air conditioner 600 to complete the steps described in the method of this application embodiment.

[0156] 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.

[0157] Furthermore, the technical solutions described in the embodiments of this application can be combined arbitrarily without conflict.

[0158] 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; If the air conditioner is operating in voltage doubling rectification mode, the first voltage value is compared with the first set voltage threshold to generate a first comparison result; Based on the first comparison result, the air conditioner is controlled to operate in a non-voltage doubler rectification mode; In the non-voltage-doubling 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-doubling rectification mode.

2. The method according to claim 1, characterized in that, Based on the first comparison result, controlling the air conditioner to operate in a non-voltage doubler rectification mode includes: Based on the first comparison result, if it is determined that the first voltage value is greater than or equal to the first set voltage threshold, then the air conditioner is controlled to operate in a non-voltage doubler rectification mode.

3. 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 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. If the air conditioner is controlled to operate in the voltage doubling rectification mode, then the voltage doubling rectification circuit is controlled to be turned on, and the non-voltage doubling rectification circuit is controlled to be turned off.

4. The method according to claim 3, characterized in that, The control of the air conditioner to operate in a non-voltage doubler rectification mode includes: Control the air conditioner's fan to stop running; Disconnect the voltage doubler rectifier circuit and close the non-voltage doubler rectifier circuit; The transformer ratio of the air conditioner is switched from the first ratio to the second ratio; Start the air conditioner's fan; 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.

5. The method according to claim 1, characterized in that, The method further includes: If the air conditioner's fan is not started, a second comparison result is generated by comparing the first voltage value with the second set voltage threshold. Based on the second comparison result, the power supply rectification mode of the air conditioner is determined; Based on the determined power supply rectification mode, the fan of the air conditioner is controlled to start.

6. The method according to claim 5, characterized in that, The step of determining the power supply rectification mode of the air conditioner based on the second comparison result includes: Based on the second comparison result, if it is determined that the first voltage value is greater than or equal to the second set voltage threshold, then the air conditioner is controlled to operate in the non-voltage doubler rectification mode; or, Based on the second comparison result, if it is determined that the first voltage value is less than the second set voltage threshold, then the air conditioner is controlled to operate in the voltage doubling rectification mode.

7. The method according to claim 5, 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, and the second set voltage threshold is set to the second 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, and the second set voltage threshold is set to the second DC voltage threshold; Wherein, the first AC voltage threshold is greater than the second AC voltage threshold; the first DC voltage threshold is greater than the second DC voltage threshold.

8. 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 first set voltage threshold and generate a first comparison result if the air conditioner is operating in a voltage doubler rectification mode. The control module is used to control the air conditioner to operate in a non-voltage doubler rectification mode based on the first comparison result; In the non-voltage-doubling 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-doubling rectification mode.

9. 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 7.

10. The air conditioner according to claim 9, 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.

11. 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 7.

12. 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 7.

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