Air conditioner control method and device and air conditioner

Abstract

The application provides an air conditioner control method and device and an air conditioner. The method comprises the following steps: acquiring the voltage value and the current value of the power line in the air conditioner in real time, correcting the original current protection value according to the voltage value and the voltage threshold to obtain a current protection correction value; controlling the frequency of the compressor in the air conditioner according to the current value and the current protection correction value, and in the control process, if the voltage value meets the starting condition and the starting instruction of the preset mode is acquired, the air conditioner is controlled to operate according to the preset mode; wherein the preset mode is used to represent the operating mode of the maximum current value. In the above control mode, the original current protection value is corrected according to the voltage value, and the frequency of the compressor is adjusted according to the current value and the current protection correction value, so that the current is effectively protected without increasing the cost. In addition, the preset mode ensures the refrigeration or heating effect of the air conditioner, and improves the user comfort.

Description

Technical Field

[0001] This invention relates to the field of air conditioning technology, and in particular to air conditioner control methods, devices, and air conditioners. Background Technology

[0002] In practical applications, air conditioners are equipped with current detection devices and corresponding current control methods to ensure electrical safety. When the current is too high, the frequency is reduced or the unit is shut down directly for protection. However, in areas with unstable voltage, when the voltage drops to 70% or lower of the rated voltage, a large current may occur because the air conditioner load and power remain unchanged. To prevent large currents under low voltage, existing methods usually involve increasing the wire diameter when selecting power cords. However, this increases the cost of air conditioners and is not convenient for widespread implementation in practical applications. Therefore, how to achieve effective current protection without increasing costs is an urgent problem to be solved. Summary of the Invention

[0003] In view of this, the purpose of the present invention is to provide an air conditioner control method, device and air conditioner to alleviate the above problems. The original current protection value is corrected according to the voltage value, and the compressor frequency is adjusted according to the current value and the current protection correction value, so as to avoid excessive current and achieve effective current protection without increasing costs. In addition, the preset mode ensures the cooling or heating effect of the air conditioner and improves user comfort.

[0004] In a first aspect, embodiments of the present invention provide an air conditioner control method, the method comprising: acquiring in real time the voltage and current values ​​of the power line in the air conditioner; correcting a preset original current protection value based on the voltage value and a preset voltage threshold to obtain a current protection correction value; controlling the frequency of the compressor in the air conditioner based on the current value and the current protection correction value; and during the control process, if the voltage value meets the opening conditions and an opening command for a preset mode is obtained, controlling the air conditioner to operate according to the preset mode; wherein the preset mode is used to characterize the operating mode with the maximum current value, and the maximum current value does not exceed the maximum allowable value of the power line.

[0005] The aforementioned air conditioner control method detects the voltage and current values ​​of the power cord in the air conditioner in real time, and corrects the original current protection value based on the voltage value to obtain a current protection correction value. Furthermore, it adjusts the compressor frequency based on the current value and the current protection correction value. In cases of low voltage and increased current, the compressor frequency is reduced to prevent excessive current, thus achieving effective current protection without increasing costs. This prevents the current value from exceeding the operating range of the power cord, thereby improving the accuracy of current control. In addition, preset modes ensure the cooling or heating effect of the air conditioner, improving user comfort.

[0006] Preferably, the voltage thresholds include: a first voltage threshold, a second voltage threshold, and a third voltage threshold, wherein the first voltage threshold > the second voltage threshold > the third voltage threshold; the step of correcting a preset original current protection value based on the voltage value and the preset voltage threshold to obtain a current protection correction value includes: if the voltage value is greater than the first voltage threshold, then the original current protection value is used as the current protection correction value; or, if the voltage value is not greater than the first voltage threshold, but is greater than the second voltage threshold, the current protection correction value is calculated based on the original current protection value and a first coefficient; or, if the voltage value is not greater than the second voltage threshold, but is greater than the third voltage threshold, the current protection correction value is calculated based on the original current protection value and a second coefficient; wherein the first coefficient is greater than the second coefficient; or, if the voltage value is not greater than the third voltage threshold, the compressor is controlled to stop.

[0007] Preferably, the aforementioned original current protection value includes: a first original current protection value, a second original current protection value, a third original current protection value, and a fourth original current protection value; the current protection correction value includes: a first current protection correction value, a second current protection correction value, a third current protection correction value, and a fourth current protection correction value; the step of calculating the current protection correction value based on the original current protection value and a first coefficient includes: calculating a first current protection correction value based on the first original current protection value and a first coefficient, calculating a second current protection correction value based on the second original current protection value and a first coefficient, calculating a third current protection correction value based on the third original current protection value and a first coefficient; and using the fourth original current protection value as the fourth current protection correction value; or, the step of calculating the current protection correction value based on the original current protection value and a second coefficient includes: calculating a first current protection correction value based on the first original current protection value and a second coefficient, calculating a second current protection correction value based on the second original current protection value and a second coefficient, calculating a third current protection correction value based on the third original current protection value and a second coefficient; and using the fourth original current protection value as the fourth current protection correction value.

[0008] Preferably, the first current protection correction value < the second current protection correction value < the third current protection correction value < the fourth current protection correction value; the step of controlling the frequency of the compressor in the air conditioner according to the current value and the current protection correction value includes: if the current value is less than the first current protection correction value, the compressor has no frequency limitation; or, if the current value is not less than the first current protection correction value and is less than the second current protection correction value, the compressor frequency is controlled to increase at a first rate until the difference between the current value and the second current protection correction value meets a preset difference threshold; or, if the current value is not less than the second current protection correction value and is less than the third current protection correction value, the compressor frequency is controlled to decrease at a first rate until the difference between the current value and the second current protection correction value meets the difference threshold; or, if the current value is not less than the third current protection correction value and is less than the fourth current protection correction value, the compressor frequency is controlled to decrease at a second rate until the current value decreases to the third current protection correction value; wherein the second rate is greater than the first rate.

[0009] Preferably, the above method further includes: controlling the compressor to stop if the current value is not less than the fourth current protection correction value.

[0010] Preferably, the above-mentioned activation condition includes a fourth voltage threshold; the step of the voltage value satisfying the activation condition includes: if the voltage value is greater than a third voltage threshold and less than a fourth voltage threshold, it is determined that the voltage value satisfies the activation condition.

[0011] Preferably, the above method further includes: when the air conditioner is running in a preset mode, if the voltage value is not less than the fourth voltage threshold and the duration reaches the preset duration, controlling the air conditioner to exit the preset mode.

[0012] Secondly, embodiments of the present invention also provide an air conditioner control device, the device comprising: an acquisition module for acquiring in real time the voltage and current values ​​of the power line in the air conditioner; a correction module for correcting a preset original current protection value based on the voltage value and a preset voltage threshold to obtain a current protection correction value; a first control module for controlling the frequency of the compressor in the air conditioner based on the current value and the current protection correction value; and a second control module for controlling the air conditioner to operate according to a preset mode if, during the control process, the voltage value meets the opening conditions and an opening command for a preset mode is acquired; wherein the preset mode is used to characterize the operating mode with the maximum current value, and the maximum current value does not exceed the maximum allowable value of the power line.

[0013] Thirdly, embodiments of the present invention also provide an air conditioner, including a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the computer program to implement the steps of the air conditioner control method of the first aspect described above.

[0014] Fourthly, embodiments of the present invention also provide a computer-readable storage medium storing a computer program, which, when executed by a processor, performs the steps of the air conditioner control method described in the first aspect.

[0015] The embodiments of the present invention bring the following beneficial effects:

[0016] This invention provides an air conditioner control method, device, and air conditioner. It detects the voltage and current values ​​of the power cord in the air conditioner in real time, and corrects the original current protection value based on the voltage value to obtain a corrected current protection value. Furthermore, it adjusts the compressor frequency based on the current value and the corrected current protection value. In cases of increased current due to low voltage, the compressor frequency is reduced to prevent excessive current, thus achieving effective current protection without increasing costs. This prevents the current value from exceeding the operating range of the power cord, thereby improving the accuracy of current control. In addition, preset modes ensure the cooling or heating effect of the air conditioner, improving user comfort.

[0017] Other features and advantages of the invention will be set forth in the following description, and will be apparent in part from the description, or may be learned by practicing the invention. The objects and other advantages of the invention are realized and obtained through the structures particularly pointed out in the description and the drawings.

[0018] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0019] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0020] Figure 1 A flowchart of an air conditioner control method provided in an embodiment of the present invention;

[0021] Figure 2 A schematic diagram of an air conditioner control device provided in an embodiment of the present invention;

[0022] Figure 3 This is a schematic diagram of the structure of an air conditioner provided in an embodiment of the present invention. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0024] To facilitate understanding of this embodiment, the air conditioner control method provided by this invention will be described in detail below. The executing entity is the air conditioner controller. In practical applications, the controller includes an outdoor controller corresponding to the outdoor unit and an indoor controller corresponding to the indoor unit. Both the outdoor and indoor controllers are equipped with a computer program corresponding to the air conditioner control method provided by this invention. In practical applications, the executing controller of the air conditioner control method is determined according to the location of the power cord. For example, if the power cord is located on the indoor side, the executing controller is the indoor controller; if the power cord is located on the outdoor side, the executing controller is the outdoor controller.

[0025] Specifically, the indoor or outdoor controller, by executing the controller control method provided in this embodiment of the invention, avoids excessive current by reducing the compressor frequency when the low voltage current value increases. This achieves effective current protection without increasing costs, prevents the current value from exceeding the power line's operating range, and thus improves the current control accuracy. In addition, the preset mode ensures the cooling or heating effect of the air conditioner, improving user comfort.

[0026] Based on the above-mentioned air conditioner, embodiments of the present invention provide an air conditioner control method, such as... Figure 1 As shown, the method includes:

[0027] Step S102: Real-time acquisition of the voltage and current values ​​of the power cord in the air conditioner;

[0028] Specifically, a detection device connected to the controller is installed at the power cord to detect the voltage U0 and current I0 of the power cord. This detection device is preferably a detection circuit. Furthermore, to prevent excessive current at low voltage levels from causing direct shutdown, the detection device preferably detects the voltage U0 and current I0 in real time. This allows for current protection control based on the real-time voltage U0 and current I0, preventing the current I0 from exceeding the power cord's operating limit. Compared to existing methods, this reduces the range of power cord specifications that can be used, thereby lowering costs.

[0029] Step S104: Based on the voltage value and the preset voltage threshold, the preset original current protection value is corrected to obtain the current protection correction value.

[0030] Specifically, based on the real-time detected voltage value U0 and voltage threshold, the original current protection value is corrected to obtain the current protection correction value by calculating a corresponding percentage on the original current protection value, thereby reducing the current protection value. In the case of low voltage and high current, the reduction of the current protection value can prevent the current value from exceeding the power line usage limit, thus achieving effective protection of the current value.

[0031] Step S106: Control the frequency of the compressor in the air conditioner according to the current value and the current protection correction value;

[0032] In practical applications, although the load of an air conditioner includes a compressor and a cross-flow fan, the load of the cross-flow fan accounts for a very small proportion of the total power, while the compressor accounts for the largest proportion of the power. Therefore, in this embodiment of the invention, it is preferable to adjust the power of the air conditioner by adjusting the frequency of the compressor, that is, by adjusting the voltage and current values ​​of the power supply line.

[0033] Specifically, after calculating the above current protection correction value, the frequency of the compressor in the air conditioner is controlled according to the current value and the current protection correction value, such as reducing the compressor frequency, so as to always keep the current value within a certain range, avoid the current value from exceeding the power line's operating range, and thus achieve effective current protection.

[0034] Step S108: During the control process, if the voltage value meets the opening condition and the opening command of the preset mode is obtained, the air conditioner is controlled to operate according to the preset mode; wherein, the preset mode is used to characterize the operating mode of the maximum current value.

[0035] In practical applications, the air conditioner is also equipped with a remote control that communicates with the controller, allowing users to turn preset modes on or off. Furthermore, users can also turn preset modes on or off via a mobile device that communicates with the controller. Therefore, during current protection, if the voltage value meets the activation conditions and the controller receives the activation command for the preset mode, the controller will control the air conditioner to operate according to the preset mode, that is, control the air conditioner to operate according to the maximum current value Imax corresponding to the preset mode.

[0036] Among them, the maximum current value Imax shall not exceed the maximum allowable value of the power line. If a value close to but less than the maximum allowable value of the power line is used as Imax, the air conditioner can increase the compressor frequency as much as possible when the air conditioner operates at the maximum current value Imax, thereby improving the cooling or heating effect of the air conditioner. This avoids the compressor frequency dropping too low during the current protection process, which would affect the operation of the air conditioner and ensure the comfort of the user during the current protection process.

[0037] It should be noted that in the above preset mode, if other protection is triggered, such as if the user changes the operating mode via remote control or mobile device, the air conditioner will be controlled to operate according to the mode changed by the user, and the actual current value of the air conditioner during operation will be protected, thereby preventing the current value from exceeding the operating range of the power cord and improving the current control accuracy.

[0038] The air conditioner control method provided in this invention detects the voltage and current values ​​of the power cord in the air conditioner in real time, and corrects the original current protection value based on the voltage value to obtain a current protection correction value; and adjusts the compressor frequency based on the current value and the current protection correction value. In the case of low voltage and increased current value, the compressor frequency is reduced to avoid excessive current, thereby achieving effective current protection without increasing cost, preventing the current value from exceeding the operating range of the power cord, and thus improving the current control accuracy; in addition, the preset mode ensures the cooling or heating effect of the air conditioner and improves user comfort.

[0039] In one embodiment, the voltage thresholds include: a first voltage threshold, a second voltage threshold, and a third voltage threshold, wherein the first voltage threshold > the second voltage threshold > the third voltage threshold; and each voltage threshold is based on the rated voltage U of the air conditioner. 额 Preferably, the first voltage threshold is U. 额 *90%, the second voltage threshold is U 额 *70%, the third voltage threshold is Umin, where Umin represents the minimum operating voltage of the air conditioner.

[0040] Specifically, the process of correcting the preset original current protection value based on the voltage value and the preset voltage threshold to obtain the current protection correction value is as follows:

[0041] (1) If the voltage value is greater than the first voltage threshold, the original current protection value is used as the current protection correction value; that is, when U0 > U 额 At 90%, the current protection correction value equals the original current protection value;

[0042] (2) If the voltage value is not greater than the first voltage threshold, and is greater than the second voltage threshold, the current protection correction value is calculated based on the original current protection value and the first coefficient; that is, when U 额 *70% < U0 ≤ U 额 At 90%, the current protection correction value = original current protection value * k1; where k1 represents the first coefficient;

[0043] (3) If the voltage value is not greater than the second voltage threshold and is greater than the third voltage threshold, the current protection correction value is calculated based on the original current protection value and the second coefficient; specifically, when Umin < U0 ≤ U额 When the current protection correction value is 70%, the original current protection value is k2; where k2 represents the second coefficient, and k2 < k1. In practical applications, k1 is preferably 80%, and k2 is preferably 70%. The specific values ​​of k1 and k2 can be adjusted adaptively according to the actual situation.

[0044] (4) If the voltage value is not greater than the third voltage threshold, control the compressor to stop; that is, when U0≤Umin, since the voltage value is lower than the minimum operating voltage of the air conditioner, the compressor is controlled to stop.

[0045] Therefore, based on the voltage value U0 and the preset voltage threshold, the preset original current protection value can be corrected to obtain the current protection correction value. The specific correction method is shown in the table below:

[0046] Table 1

[0047] Voltage value U0 Current protection correction value <![CDATA[U0>U 额 ]]> Original current protection value <![CDATA[U 额 *90%<U0≤U 额 ]]> Original current protection value <![CDATA[U 额 *70%<U0≤U 额 *90%]]> Original current protection value * 80% <![CDATA[Umin<U0≤U 额 *70%]]> Original current protection value * 70% U0≤Umin Compressor shutdown

[0048] Therefore, based on the voltage value U0 and the voltage threshold, the current protection correction value is calculated as a corresponding percentage on the original current protection value, which reduces the current protection value. In the case of low voltage and high current, the reduction of the current protection value can prevent the current value from exceeding the power line usage limit, thereby achieving effective protection of the current value.

[0049] In one embodiment, the aforementioned original current protection values ​​include: a first original current protection value I01, a second original current protection value I02, a third original current protection value I03, and a fourth original current protection value I04, wherein the first original current protection value < the second original current protection value < the third original current protection value < the fourth original current protection value, i.e., I01 < I02 < I03 < I04; preferably, I01 = 15A, I02 = 18A, I03 = 22A, and I04 = 25A, and the specific original current protection values ​​can be adaptively adjusted according to the actual situation.

[0050] Similarly, the current protection correction values ​​include: the first current protection correction value I1, the second current protection correction value I2, the third current protection correction value I3, and the fourth current protection correction value I4; wherein, the first current protection correction value < the second current protection correction value < the third current protection correction value < the fourth current protection correction value, i.e., I1 < I2 < I3 < I4.

[0051] The process of calculating the current protection correction value based on the original current protection value and the first coefficient is as follows: the first current protection correction value is calculated based on the first original current protection value and the first coefficient, i.e., I01*k1=I1; the second current protection correction value is calculated based on the second original current protection value and the first coefficient, i.e., I02*k1=I2; the third current protection correction value is calculated based on the third original current protection value and the first coefficient, i.e., I03*k1=I3; and the fourth original current protection value is used as the fourth current protection correction value, i.e., I04=I4.

[0052] Similarly, the process of calculating the current protection correction value based on the original current protection value and the second coefficient is as follows: the first current protection correction value is calculated based on the first original current protection value and the second coefficient, i.e., I01*k2=I1; the second current protection correction value is calculated based on the second original current protection value and the second coefficient, i.e., I02*k2=I2; the third current protection correction value is calculated based on the third original current protection value and the second coefficient, i.e., I03*k2=I3; and the fourth original current protection value is used as the fourth current protection correction value, i.e., I04=I4.

[0053] Therefore, when correcting the preset original current protection value based on the voltage value and the preset voltage threshold, only the first original current protection value, the second original current protection value, and the third original current protection value are corrected, so that the calculated first current protection correction value is ≤ the first original current protection value, the second current protection correction value is ≤ the second original current protection value, and the third current protection correction value is ≤ the third original current protection value, thereby reducing the current protection value. In addition, during the above correction process, the third original current protection value remains unchanged, that is, the fourth current protection correction value is always equal to the fourth original current protection value, and the correction is not calculated according to a percentage, thus avoiding excessive current values ​​that exceed the usage limits of the power line.

[0054] In one implementation, since the first current protection correction value < the second current protection correction value < the third current protection correction value < the fourth current protection correction value, i.e., I1 < I2 < I3 < I4; therefore, the process of controlling the frequency of the compressor in the air conditioner based on the current value and the current protection correction value is as follows:

[0055] (A1) If the current value is less than the first current protection correction value, the compressor has no frequency limit; that is, when I0 < I1, since the current value is relatively small at this time, there is no need to perform current protection, and therefore there is no need to limit the compressor frequency.

[0056] (A2) If the current value is not less than the first current protection correction value and is less than the second current protection correction value, control the compressor frequency to increase at the first rate until the difference between the current value and the second current protection correction value meets the preset difference threshold.

[0057] Specifically, when I1≤I0<I2, in the current protection, the compressor frequency is controlled to slowly increase at a first rate until the difference between the current value and the second current protection correction value meets a preset difference threshold, where the difference threshold is preferably no more than 1; and the first rate is preferably 0.1Hz / s. For example, when the difference threshold is 1, the compressor frequency is controlled to slowly increase at 0.1Hz / s until the detected current value rises to (I2-1);

[0058] (A3) If the current value is not less than the second current protection correction value and is less than the third current protection correction value, control the compressor frequency to decrease at the first rate until the difference between the current value and the second current protection correction value meets the difference threshold.

[0059] Specifically, when I2≤I0<I3, in the current protection, the compressor frequency is controlled to decrease slowly at a first rate until the difference between the current value and the second current protection correction value meets a preset difference threshold. For example, when the difference threshold is 1, the compressor frequency is controlled to decrease slowly at 0.1Hz / s until the current value is detected to decrease to (I2+1).

[0060] Therefore, according to (A2) and (A3) above, the compressor frequency is increased or decreased so that the current value I0 satisfies I2-1≤I0≤I2+1. Within this range, the compressor frequency is kept constant, avoiding repeated fluctuations in the compressor frequency that could affect the cooling or heating effect of the air conditioner. When the current value I0 exceeds this range, the compressor frequency is slowly increased or decreased until I2-1≤I0≤I2+1 is satisfied. In other words, by controlling the current value within this range, effective current protection is achieved, preventing the current value from exceeding the operating range of the power cord.

[0061] (A4) If the current value is not less than the third current protection correction value and is less than the fourth current protection correction value, control the compressor frequency to decrease at the second rate until the current value decreases to the third current protection correction value.

[0062] Specifically, when I3 ≤ I0 < I4, in the current protection mode, the compressor frequency is controlled to decrease at a second rate until the current value drops to a third current protection correction value; wherein, the second rate is greater than the first rate, and the second rate is preferably 2Hz / s. Therefore, by controlling the compressor frequency to decrease rapidly at 2Hz / s, the load on the air conditioner is reduced, thereby reducing the current value until I0 drops to I3, thus preventing the current value from exceeding the operating limit of the power supply line, i.e., the maximum allowable current value.

[0063] (A5) If the current value is not less than the fourth current protection correction value, control the compressor to stop.

[0064] It should be noted that during the current protection process, once I0≥I4 is detected, the compressor will be stopped to prevent excessive current from damaging the air conditioner and affecting its service life.

[0065] In summary, the above-mentioned control of the compressor frequency in the air conditioner by using current value and current protection correction value ensures that the current value is always kept within a certain range, preventing the current value from exceeding the operating range of the power cord, thereby achieving effective current protection.

[0066] In one embodiment, the above-mentioned activation condition includes a fourth voltage threshold U4; the step of the voltage value satisfying the activation condition includes: if the voltage value is greater than a third voltage threshold and less than a fourth voltage threshold, determining that the voltage value satisfies the activation condition.

[0067] Specifically, when Umin < U0 < U4, the voltage value U0 is determined to meet the start-up condition. The fourth voltage threshold U4 can be determined based on the air conditioner's rated voltage U. 额 Confirmed, for example, setting U4 = k3 * U 额 Here, k3 can be 1.1 or 0.9, and the specific value of k3 can be set according to the actual situation. Therefore, since the compressor stops when U0≤Umin, the compressor runs normally when Umin<U0<U4. At this time, if a preset mode start command is received, the air conditioner will be controlled to operate according to the preset mode.

[0068] In one embodiment, the method further includes: when the air conditioner is running in a preset mode, if the voltage value is not less than a fourth voltage threshold and the duration reaches a preset duration, controlling the air conditioner to exit the preset mode.

[0069] Specifically, during the operation of the air conditioner in the preset mode, i.e., the air conditioner operates at the maximum current value Imax; at this time, if U0≥U4 occurs and the duration reaches the preset time, such as 3 minutes, the controller forcibly controls the air conditioner to exit the preset mode, and determines the current protection correction value according to the voltage and current values ​​at this time in the manner described above; and, based on the current value and the current protection correction value at this time, the compressor frequency is re-controlled to achieve effective current protection, avoid the current value from exceeding the power cord's operating range, and thus improve the current control accuracy; in addition, the preset mode also ensures the cooling or heating effect of the air conditioner, improving user comfort.

[0070] Corresponding to the above method embodiments, this invention also provides an air conditioner control device, such as... Figure 2As shown, the device includes: an acquisition module 21, a correction module 22, a first control module 23, and a second control module 24; wherein the functions of each module are as follows:

[0071] The acquisition module 21 is used to acquire the voltage and current values ​​of the power cord in the air conditioner in real time.

[0072] The correction module 22 is used to correct the preset original current protection value according to the voltage value and the preset voltage threshold to obtain the current protection correction value.

[0073] The first control module 23 is used to control the frequency of the compressor in the air conditioner according to the current value and the current protection correction value;

[0074] The second control module 24 is used to control the air conditioner to operate according to the preset mode if the voltage value meets the opening condition and the preset mode opening command is obtained during the control process; wherein, the preset mode is used to characterize the operating mode of the maximum current value, and the maximum current value does not exceed the maximum allowable value of the power supply line.

[0075] The air conditioner control device provided in this embodiment of the invention detects the voltage and current values ​​of the power cord in the air conditioner in real time, and corrects the original current protection value based on the voltage value to obtain a current protection correction value; and adjusts the compressor frequency based on the current value and the current protection correction value. In the case of low voltage and increased current value, the compressor frequency is reduced to avoid excessive current, thereby achieving effective current protection without increasing cost, preventing the current value from exceeding the operating range of the power cord, and thus improving the current control accuracy; in addition, the preset mode ensures the cooling or heating effect of the air conditioner and improves user comfort.

[0076] Preferably, the voltage thresholds include: a first voltage threshold, a second voltage threshold, and a third voltage threshold, wherein the first voltage threshold > the second voltage threshold > the third voltage threshold; the correction module 22 is used to: if the voltage value is greater than the first voltage threshold, use the original current protection value as the current protection correction value; or, if the voltage value is not greater than the first voltage threshold, and is greater than the second voltage threshold, calculate the current protection correction value based on the original current protection value and a first coefficient; or, if the voltage value is not greater than the second voltage threshold, and is greater than the third voltage threshold, calculate the current protection correction value based on the original current protection value and a second coefficient; wherein the first coefficient is greater than the second coefficient; or, if the voltage value is not greater than the third voltage threshold, control the compressor to stop.

[0077] Preferably, the aforementioned original current protection value includes: a first original current protection value, a second original current protection value, a third original current protection value, and a fourth original current protection value; the current protection correction value includes: a first current protection correction value, a second current protection correction value, a third current protection correction value, and a fourth current protection correction value; calculating the current protection correction value based on the original current protection value and a first coefficient includes: calculating a first current protection correction value based on the first original current protection value and a first coefficient, calculating a second current protection correction value based on the second original current protection value and a first coefficient, and calculating a third current protection correction value based on the third original current protection value and a first coefficient; and using the fourth original current protection value as the fourth current protection correction value; or, calculating the current protection correction value based on the original current protection value and a second coefficient includes: calculating a first current protection correction value based on the first original current protection value and a second coefficient, calculating a second current protection correction value based on the second original current protection value and a second coefficient, and calculating a third current protection correction value based on the third original current protection value and a second coefficient; and using the fourth original current protection value as the fourth current protection correction value.

[0078] Preferably, the first current protection correction value < the second current protection correction value < the third current protection correction value < the fourth current protection correction value; the first control module 23 is further configured to: if the current value is less than the first current protection correction value, the compressor has no frequency limit; or, if the current value is not less than the first current protection correction value and is less than the second current protection correction value, control the compressor frequency to increase at a first rate until the difference between the current value and the second current protection correction value meets a preset difference threshold; or, if the current value is not less than the second current protection correction value and is less than the third current protection correction value, control the compressor frequency to decrease at a first rate until the difference between the current value and the second current protection correction value meets the difference threshold; or, if the current value is not less than the third current protection correction value and is less than the fourth current protection correction value, control the compressor frequency to decrease at a second rate until the current value decreases to the third current protection correction value; wherein the second rate is greater than the first rate.

[0079] Preferably, the above-mentioned device further includes: controlling the compressor to stop if the current value is not less than the fourth current protection correction value.

[0080] Preferably, the above-mentioned activation condition includes a fourth voltage threshold; the voltage value satisfying the activation condition includes: if the voltage value is greater than a third voltage threshold and less than a fourth voltage threshold, it is determined that the voltage value satisfies the activation condition.

[0081] Preferably, the above-mentioned device further includes: when the air conditioner is running in a preset mode, if the voltage value is not less than a fourth voltage threshold and the duration reaches a preset duration, controlling the air conditioner to exit the preset mode.

[0082] The air conditioner control device provided in this embodiment of the invention has the same technical features as the air conditioner control method provided in the above embodiments, so it can also solve the same technical problems and achieve the same technical effects.

[0083] This invention also provides an air conditioner, including a processor and a memory. The memory stores machine-executable instructions that can be executed by the processor, and the processor executes the machine-executable instructions to implement the above-described air conditioner control method.

[0084] See Figure 3 As shown, the air conditioner includes a processor 100 and a memory 101. The memory 101 stores machine-executable instructions that can be executed by the processor 100. The processor 100 executes the machine-executable instructions to implement the above-described air conditioner control method.

[0085] Furthermore, Figure 3 The air conditioner shown also includes a bus 102 and a communication interface 103. The processor 100, the communication interface 103 and the memory 101 are connected via the bus 102.

[0086] The memory 101 may include high-speed random access memory (RAM) or non-volatile memory, such as at least one disk storage device. Communication between this system network element and at least one other network element is achieved through at least one communication interface 103 (which can be wired or wireless), such as the Internet, wide area network, local area network, or metropolitan area network. The bus 102 may be an ISA (Industrial Standard Architecture) bus, a PCI (Peripheral Component Interconnect) bus, or an EISA (Enhanced Industry Standard Architecture) bus. These buses can be categorized as address buses, data buses, and control buses. For ease of representation, Figure 3 The symbol is represented by a single double-headed arrow, but this does not mean that there is only one bus or one type of bus.

[0087] Processor 100 may be an integrated circuit chip with signal processing capabilities. In implementation, each step of the above method can be completed by the integrated logic circuitry in the hardware of processor 100 or by instructions in software form. Processor 100 may be a general-purpose processor, including a Central Processing Unit (CPU), a Network Processor (NP), etc.; it may also be a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), a Field-Programmable Gate Array (FPGA), or other programmable logic devices, discrete gate or transistor logic devices, or discrete hardware components. It can implement or execute the methods, steps, and logic block diagrams disclosed in the embodiments of this invention. The general-purpose processor may be a microprocessor or any conventional processor. The steps of the methods disclosed in the embodiments of this invention can be directly manifested as execution by a hardware decoding processor, or execution by a combination of hardware and software modules in the decoding processor. The software module can reside in a readily available storage medium in the art, such as random access memory, flash memory, read-only memory, programmable read-only memory, electrically erasable programmable memory, or registers. This storage medium is located in memory 101, and the processor 100 reads the information from memory 101 and, in conjunction with its hardware, completes the steps of the method described in the foregoing embodiments.

[0088] This embodiment also provides a machine-readable storage medium storing machine-executable instructions. When the machine-executable instructions are called and executed by a processor, the machine-executable instructions cause the processor to implement the above-described air conditioner control method.

[0089] The air conditioner control method, apparatus, and computer program product for air conditioners provided in the embodiments of the present invention include a computer-readable storage medium storing program code. The instructions included in the program code can be used to execute the methods described in the preceding method embodiments. For specific implementation details, please refer to the method embodiments, which will not be repeated here.

[0090] Those skilled in the art will clearly understand that, for the sake of convenience and brevity, the specific working process of the system and apparatus described above can be referred to the corresponding process in the foregoing method embodiments, and will not be repeated here.

[0091] Furthermore, in the description of the embodiments of the present invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in the present invention based on the specific circumstances.

[0092] If the aforementioned functions are implemented as software functional units and sold or used as independent products, they can be stored in a processor-executable, non-volatile, computer-readable storage medium. Based on this understanding, the technical solution of this invention, essentially, or the part that contributes to the prior art, or a portion of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of this invention. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.

[0093] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0094] Finally, it should be noted that the above-described embodiments are merely specific implementations of the present invention, used to illustrate the technical solutions of the present invention, and not to limit it. The scope of protection of the present invention is not limited thereto. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that any person skilled in the art can still modify or easily conceive of changes to the technical solutions described in the foregoing embodiments within the technical scope disclosed in the present invention, or make equivalent substitutions for some of the technical features; and these modifications, changes, or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention, and should all be covered within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. An air conditioner control method characterized by comprising: The method comprises: Real-time acquisition of voltage and current values of a power line in the air conditioner; According to the voltage value and the preset voltage threshold, the preset original current protection value is corrected to obtain a current protection correction value; wherein the voltage threshold includes: a first voltage threshold, a second voltage threshold and a third voltage threshold, and the first voltage threshold > the second voltage threshold > the third voltage threshold; if the voltage value is greater than the first voltage threshold, the original current protection value is taken as the current protection correction value; if the voltage value is not greater than the first voltage threshold, and is greater than the second voltage threshold, the current protection correction value is calculated according to the original current protection value and a first coefficient; if the voltage value is not greater than the second voltage threshold, and is greater than the third voltage threshold, the current protection correction value is calculated according to the original current protection value and a second coefficient; wherein the first coefficient is greater than the second coefficient; if the voltage value is not greater than the third voltage threshold, the compressor is controlled to stop; wherein the original current protection value includes: a first original current protection value, a second original current protection value, a third original current protection value and a fourth original current protection value, and the current protection correction value includes: a first current protection correction value, a second current protection correction value, a third current protection correction value and a fourth current protection correction value; the calculation of the current protection correction value according to the original current protection value and the first coefficient includes: the calculation of the first current protection correction value according to the first original current protection value and the first coefficient, the calculation of the second current protection correction value according to the second original current protection value and the first coefficient, and the calculation of the third current protection correction value according to the third original current protection value and the first coefficient; and the fourth original current protection value is taken as the fourth current protection correction value; or the calculation of the current protection correction value according to the original current protection value and the second coefficient includes: the calculation of the first current protection correction value according to the first original current protection value and the second coefficient, the calculation of the second current protection correction value according to the second original current protection value and the second coefficient, and the calculation of the third current protection correction value according to the third original current protection value and the second coefficient; and the fourth original current protection value is taken as the fourth current protection correction value. According to the current value and the current protection correction value, a frequency of a compressor in the air conditioner is controlled; wherein the first current protection correction value < the second current protection correction value < the third current protection correction value < the fourth current protection correction value; if the current value is less than the first current protection correction value, the compressor has no frequency limit; if the current value is not less than the first current protection correction value and less than the second current protection correction value, the frequency of the compressor is controlled to rise at a first rate until a difference between the current value and the second current protection correction value meets a preset difference threshold; if the current value is not less than the second current protection correction value and less than the third current protection correction value, the frequency of the compressor is controlled to decrease at the first rate until the difference between the current value and the second current protection correction value meets the difference threshold; if the current value is not less than the third current protection correction value and less than the fourth current protection correction value, the frequency of the compressor is controlled to decrease at a second rate until the current value decreases to the third current protection correction value; wherein the second rate is greater than the first rate. In the control process, if the voltage value meets an opening condition and an opening instruction of a preset mode is acquired, the air conditioner is controlled to operate according to the preset mode; wherein the preset mode is used to represent a mode of operating according to a maximum current value, and the maximum current value does not exceed a maximum allowable use value of the power line.

2. The method of claim 1, wherein, The method further comprises: If the current value is not less than the fourth current protection correction value, the compressor is controlled to stop.

3. The method of claim 1, wherein, The opening condition comprises a fourth voltage threshold; and the step of determining whether the voltage value meets the opening condition comprises: If the voltage value is greater than the third voltage threshold and less than the fourth voltage threshold, it is determined that the voltage value meets the opening condition.

4. The method of claim 3, wherein, The method further comprises: When the air conditioner operates according to the preset mode, if the voltage value is not less than the fourth voltage threshold and a duration reaches a preset length of time, the air conditioner is controlled to exit the preset mode.

5. An air conditioner control device characterized by comprising: The device comprises: An acquisition module is configured to acquire, in real time, a voltage value and a current value of a power line in the air conditioner; The correction module is configured to correct a preset original current protection value according to the voltage value and a preset voltage threshold to obtain a current protection correction value. The voltage threshold includes a first voltage threshold, a second voltage threshold and a third voltage threshold, and the first voltage threshold > the second voltage threshold > the third voltage threshold. If the voltage value is greater than the first voltage threshold, the original current protection value is taken as the current protection correction value. If the voltage value is not greater than the first voltage threshold and is greater than the second voltage threshold, the current protection correction value is calculated according to the original current protection value and a first coefficient. If the voltage value is not greater than the second voltage threshold and is greater than the third voltage threshold, the current protection correction value is calculated according to the original current protection value and a second coefficient. The first coefficient is greater than the second coefficient. If the voltage value is not greater than the third voltage threshold, the compressor is controlled to stop. The original current protection value includes a first original current protection value, a second original current protection value, a third original current protection value and a fourth original current protection value. The current protection correction value includes a first current protection correction value, a second current protection correction value, a third current protection correction value and a fourth current protection correction value. The current protection correction value calculated according to the original current protection value and the first coefficient includes that the first current protection correction value is calculated according to the first original current protection value and the first coefficient, the second current protection correction value is calculated according to the second original current protection value and the first coefficient, and the third current protection correction value is calculated according to the third original current protection value and the first coefficient. The fourth original current protection value is taken as the fourth current protection correction value. Alternatively, the current protection correction value calculated according to the original current protection value and the second coefficient includes that the first current protection correction value is calculated according to the first original current protection value and the second coefficient, the second current protection correction value is calculated according to the second original current protection value and the second coefficient, and the third current protection correction value is calculated according to the third original current protection value and the second coefficient. The fourth original current protection value is taken as the fourth current protection correction value. The first control module is configured to control a frequency of a compressor in the air conditioner according to the current value and the current protection correction value; wherein the first current protection correction value < the second current protection correction value < the third current protection correction value < the fourth current protection correction value; if the current value is less than the first current protection correction value, the compressor is not frequency-limited; if the current value is not less than the first current protection correction value and less than the second current protection correction value, the frequency of the compressor is controlled to increase at a first rate until a difference between the current value and the second current protection correction value meets a preset difference threshold; if the current value is not less than the second current protection correction value and less than the third current protection correction value, the frequency of the compressor is controlled to decrease at the first rate until the difference between the current value and the second current protection correction value meets the difference threshold; if the current value is not less than the third current protection correction value and less than the fourth current protection correction value, the frequency of the compressor is controlled to decrease at a second rate until the current value decreases to the third current protection correction value; wherein the second rate is greater than the first rate. The second control module is configured to control the air conditioner to operate in a preset mode if the voltage value meets an opening condition and an opening instruction of the preset mode is acquired during the control process; wherein the preset mode is used to represent a mode of operating according to a maximum current value, and the maximum current value does not exceed a maximum allowable use value of the power line.

6. An air conditioner comprising a memory, a processor, and a computer program stored on the memory and executable on the processor, characterized in that, The processor executes the computer program to implement the steps of the air conditioner control method in any one of claims 1-4.

7. A computer readable storage medium characterized in that, The computer readable storage medium stores a computer program, and the computer program is executed by the processor to perform the steps of the air conditioner control method in any one of claims 1-4.

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