Air conditioner shutdown control method, device and electronic equipment

Abstract

The present disclosure relates to a shutdown control method, device and electronic equipment for an air conditioner, wherein the method comprises: a controller in the air conditioner, upon receiving a shutdown command, performs frequency reduction shutdown processing on the air conditioner and obtains an outdoor ambient temperature and an outdoor coil temperature of the air conditioner; obtains a current frequency change rate of the air conditioner during the frequency reduction shutdown processing; and adjusts a current frequency lower limit of the air conditioner during the frequency reduction shutdown processing according to the outdoor ambient temperature, the outdoor coil temperature and the current frequency change rate, thereby ensuring that the frequency of the air conditioner changes slowly during shutdown, avoiding excessive coil stress in the air conditioner, avoiding coil breakage, and avoiding shutdown failure of the air conditioner.

Description

Technical Field

[0001] The present disclosure relates to the technical field of air-conditioning control, and in particular to a shutdown control method, device and electronic equipment for an air conditioner. Background Art

[0002] At present, after receiving a shutdown command, the inverter air conditioner will immediately control the compressor therein to shut down. If the inverter air conditioner is overloaded and running at a high frequency before receiving the shutdown command, the coil in the inverter air conditioner may be overstressed after receiving the shutdown command, resulting in the coil breaking and the inverter air conditioner malfunctioning. Summary of the invention

[0003] The present disclosure provides a shutdown control method, device and electronic equipment for an air conditioner.

[0004] According to a first aspect of an embodiment of the present disclosure, a shutdown control method for an air conditioner is provided, which is applied to a controller in the air conditioner, and the method includes: when a shutdown command is received, performing frequency reduction shutdown processing on the air conditioner, and obtaining the outdoor ambient temperature and the outdoor coil temperature of the air conditioner; obtaining the current frequency change rate of the air conditioner during the frequency reduction shutdown processing; and adjusting the current frequency lower limit of the air conditioner during the frequency reduction shutdown processing according to the outdoor ambient temperature, the outdoor coil temperature and the current frequency change rate.

[0005] In one embodiment of the present disclosure, the current frequency lower limit of the air conditioner during the frequency reduction shutdown process is adjusted according to the outdoor ambient temperature, the outdoor coil temperature and the current frequency change rate, including: determining the load condition of the air conditioner according to the outdoor ambient temperature and the outdoor coil temperature; determining the load change condition of the air conditioner according to the current frequency change rate; adjusting the current frequency lower limit of the air conditioner during the frequency reduction shutdown process according to the load condition and the load change condition.

[0006] In one embodiment of the present disclosure, determining the load condition of the air conditioner based on the outdoor ambient temperature and the outdoor coil temperature includes: when the outdoor ambient temperature is greater than the ambient temperature threshold and the outdoor coil temperature is greater than the coil temperature threshold, determining that the load condition is overloaded; when the outdoor ambient temperature is less than or equal to the ambient temperature threshold, or the outdoor coil temperature is less than or equal to the coil temperature threshold, determining that the load condition is normal.

[0007] In one embodiment of the present disclosure, determining the load change condition of the air conditioner based on the current frequency change rate includes: when the current frequency change rate is greater than the frequency reduction rate threshold, determining that the load change condition is a too fast load change; when the current frequency change rate is less than or equal to the frequency reduction rate threshold, determining that the load change condition is a normal load change.

[0008] In one embodiment of the present disclosure, the current frequency lower limit of the air conditioner during the frequency reduction shutdown process is adjusted according to the load condition and the load change condition, including: when the load condition is overload and the load change condition is that the load changes too quickly, the current frequency lower limit is adjusted according to a high load frequency correction threshold; when the load condition is normal and the load change condition is that the load changes too quickly, the current frequency lower limit is adjusted according to a low load frequency correction threshold; the low load frequency correction threshold is smaller than the high load frequency correction threshold.

[0009] In one embodiment of the present disclosure, the adjusting process of the current frequency lower limit according to the high load frequency correction threshold includes: obtaining the difference between the current frequency lower limit and the high load frequency correction threshold; and using the difference as the current frequency lower limit.

[0010] In one embodiment of the present disclosure, the current frequency lower limit of the air conditioner is adjusted during the frequency reduction shutdown process according to the load condition and the load change condition, and also includes: when the load change condition is normal, stopping the adjustment of the current frequency lower limit.

[0011] According to the second aspect of the embodiments of the present disclosure, a shutdown control device for an air conditioner is also provided, which executes the shutdown control method for the air conditioner in the above embodiments and is applied to a controller in the air conditioner. The device includes: a frequency reduction shutdown processing module, which is used to perform frequency reduction shutdown processing on the air conditioner when a shutdown command is received, and obtain the outdoor ambient temperature and the outdoor coil temperature of the air conditioner; an acquisition module, which is used to obtain the current frequency change rate of the air conditioner during the frequency reduction shutdown processing; and an adjustment module, which is used to adjust the current frequency lower limit of the air conditioner during the frequency reduction shutdown processing according to the outdoor ambient temperature, the outdoor coil temperature and the current frequency change rate.

[0012] According to a third aspect of an embodiment of the present disclosure, there is also provided an electronic device, comprising: a processor; and a memory for storing instructions executable by the processor; wherein the processor is configured to execute the instructions to implement the shutdown control method of the air conditioner as described above.

[0013] According to a fourth aspect of an embodiment of the present disclosure, a non-temporary computer-readable storage medium is also provided. When instructions in the storage medium are executed by a processor, the processor is enabled to execute the shutdown control method of the air conditioner as described above.

[0014] The technical solution provided by the embodiments of the present disclosure brings at least the following beneficial effects:

[0015] The controller in the air conditioner, upon receiving a shutdown command, performs frequency reduction and shutdown processing on the air conditioner, and obtains the outdoor ambient temperature and outdoor coil temperature of the air conditioner; obtains the current frequency change rate of the air conditioner during the frequency reduction and shutdown processing; adjusts the current frequency lower limit of the air conditioner during the frequency reduction and shutdown processing according to the outdoor ambient temperature, the outdoor coil temperature and the current frequency change rate, thereby ensuring that the frequency of the air conditioner changes slowly during shutdown, avoiding excessive coil stress in the air conditioner, avoiding coil breakage, and avoiding shutdown failure of the air conditioner.

[0016] It is to be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The drawings herein are incorporated into and constitute a part of the specification, illustrate embodiments consistent with the present disclosure, and together with the description are used to explain the principles of the present disclosure, and do not constitute improper limitations on the present disclosure.

[0018] Figure 1 A flowchart of a shutdown control method for an air conditioner according to an embodiment of the present disclosure;

[0019] Figure 2 A flowchart of a shutdown control method for an air conditioner according to another embodiment of the present disclosure;

[0020] Figure 3 is a schematic diagram of a shutdown control method for an air conditioner disclosed in the present invention;

[0021] Figure 4 A schematic diagram of the structure of a shutdown control device for an air conditioner according to an embodiment of the present disclosure;

[0022] Figure 5 The figure is a structural block diagram of an electronic device according to an exemplary embodiment of the present disclosure. DETAILED DESCRIPTION

[0023] In order to enable ordinary persons in the art to better understand the technical solutions of the present disclosure, the technical solutions in the embodiments of the present disclosure will be clearly and completely described below in conjunction with the accompanying drawings.

[0024] It should be noted that the terms "first", "second", etc. in the specification and claims of the present disclosure and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the present disclosure described herein can be implemented in an order other than those illustrated or described herein. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present disclosure. Instead, they are merely examples of devices and methods consistent with some aspects of the present disclosure as detailed in the appended claims.

[0025] At present, after receiving a shutdown command, the inverter air conditioner will immediately control the compressor therein to shut down. If the inverter air conditioner is overloaded and running at a high frequency before receiving the shutdown command, the coil in the inverter air conditioner may be overstressed after receiving the shutdown command, resulting in the coil breaking and the inverter air conditioner malfunctioning.

[0026] Figure 1 The flowchart of the air conditioner shutdown control method of one embodiment of the present disclosure is shown in FIG. It should be noted that the air conditioner shutdown control method of the present embodiment is executed by a controller in the air conditioner, or by software in the controller in the air conditioner. The following description is made by taking the controller in the air conditioner as an example.

[0027] like Figure 1 As shown, the method comprises the following steps:

[0028] Step 101, when a shutdown command is received, the air conditioner is shut down by frequency reduction, and the outdoor ambient temperature and outdoor coil temperature of the air conditioner are obtained.

[0029] In the embodiment of the present disclosure, the process of the controller reducing the frequency and shutting down the air conditioner may, for example, be as follows: obtaining the current frequency of the air conditioner when receiving a shutdown command; determining the frequency reduction rate and the current frequency lower limit based on the current frequency; adjusting the current frequency according to the frequency reduction rate until the current frequency lower limit is reached; and when the current frequency of the air conditioner reaches the current frequency lower limit, controlling the compressor to shut down.

[0030] Step 102, obtaining the current frequency change rate of the air conditioner during the frequency reduction shutdown process.

[0031] In the embodiment of the present disclosure, the process of the controller obtaining the current frequency change rate of the air conditioner during the frequency reduction shutdown processing may be, for example, (1) determining multiple acquisition time points based on the frequency acquisition period; (2) acquiring the current frequency of the air conditioner at multiple acquisition time points; (3) at each acquisition time point, determining the current frequency change rate of the air conditioner based on the current frequency acquired at the acquisition time point and the current frequency acquired at the previous acquisition time point.

[0032] The current frequency change rate of the air conditioner can be the ratio of the difference between the current frequencies at two acquisition time points to the frequency acquisition period. The frequency acquisition period can be, for example, 1 second, 2 seconds, etc. Assuming that the frequency acquisition period is 1 second, the current frequency collected at the n-1th second is F n-1 , the current frequency collected at the nth second is F n , then the current frequency change rate of the air conditioner is F n-1 -F n .

[0033] Step 103, adjusting the lower limit of the current frequency of the air conditioner during the frequency reduction shutdown process according to the outdoor ambient temperature, the outdoor coil temperature and the current frequency change rate.

[0034] In the embodiment of the present disclosure, the controller can determine the load condition and load change of the air conditioner based on the outdoor ambient temperature, the outdoor coil temperature and the current frequency change rate, and then determine the adjustment strategy for the current lower frequency limit of the air conditioner; according to the adjustment strategy, the current lower frequency limit of the air conditioner during the frequency reduction shutdown process is adjusted so that the frequency reduction shutdown process can continue according to the adjusted current lower frequency limit.

[0035] It should be noted that during the frequency reduction shutdown process, the controller can repeatedly adjust the current frequency lower limit multiple times, that is, the controller can repeatedly execute steps 102 to 103. For example, the controller can obtain the current frequency change rate of the air conditioner at regular intervals, and adjust the current frequency lower limit of the air conditioner until the air conditioner shutdown process is completed. The regular time period can be, for example, 5 seconds, 10 seconds, etc., and can be set according to actual needs, and is not specifically limited here.

[0036] In the shutdown control method for an air conditioner in an embodiment of the present invention, a controller in the air conditioner, upon receiving a shutdown command, performs frequency reduction shutdown processing on the air conditioner, and obtains the outdoor ambient temperature and the outdoor coil temperature of the air conditioner; obtains the current frequency change rate of the air conditioner during the frequency reduction shutdown processing; and adjusts the current frequency lower limit of the air conditioner during the frequency reduction shutdown processing according to the outdoor ambient temperature, the outdoor coil temperature and the current frequency change rate, thereby ensuring that the frequency of the air conditioner changes slowly during shutdown, avoiding excessive coil stress in the air conditioner, avoiding coil breakage, and avoiding shutdown failure of the air conditioner.

[0037] Figure 2 This is a flow chart of a shutdown control method for an air conditioner according to another embodiment of the present disclosure. It should be noted that the shutdown control method for an air conditioner according to this embodiment is executed by a controller in the air conditioner, or by software in the controller in the air conditioner. The following description is made by taking the controller in the air conditioner as an example.

[0038] like Figure 2 As shown, the method comprises the following steps:

[0039] Step 201, when a shutdown command is received, the air conditioner is shut down by frequency reduction, and the outdoor ambient temperature and outdoor coil temperature of the air conditioner are obtained.

[0040] Step 202, obtaining the current frequency change rate of the air conditioner during the frequency reduction shutdown process.

[0041] Step 203, determining the load of the air conditioner according to the outdoor ambient temperature and the outdoor coil temperature.

[0042] In the embodiment of the present disclosure, the process of the controller executing step 203 may, for example, be: when the outdoor ambient temperature is greater than the ambient temperature threshold and the outdoor coil temperature is greater than the coil temperature threshold, the load condition is determined to be overloaded; when the outdoor ambient temperature is less than or equal to the ambient temperature threshold, or the outdoor coil temperature is less than or equal to the coil temperature threshold, the load condition is determined to be normal.

[0043] The ambient temperature threshold may be, for example, 43°C, and the coil temperature threshold may be, for example, 57°C.

[0044] Step 204, determining the load change of the air conditioner according to the current frequency change rate.

[0045] In the embodiment of the present disclosure, the process of the controller executing step 204 may, for example, be: when the current frequency change rate is greater than the frequency reduction rate threshold, determining that the load change condition is a too fast load change; when the current frequency change rate is less than or equal to the frequency reduction rate threshold, determining that the load change condition is a normal load change.

[0046] The frequency reduction rate threshold may be, for example, 2 Hz / s, that is, 2 Hertz per second.

[0047] Step 205, adjusting the lower limit of the current frequency of the air conditioner during the frequency reduction shutdown process according to the load condition and load change condition.

[0048] In the embodiment of the present disclosure, the process of the controller executing step 205 may, for example, be: when the load condition is overload and the load change condition is too fast, the current frequency lower limit is adjusted according to the high load frequency correction threshold; when the load condition is normal and the load change condition is too fast, the current frequency lower limit is adjusted according to the low load frequency correction threshold; the low load frequency correction threshold is less than the high load frequency correction threshold.

[0049] The high-load frequency correction threshold may be, for example, 10 Hz; and the low-load frequency correction threshold may be, for example, 5 Hz.

[0050] The process in which the controller adjusts the current frequency lower limit according to the high-load frequency correction threshold may be, for example, obtaining the difference between the current frequency lower limit and the high-load frequency correction threshold; and using the difference as the current frequency lower limit.

[0051] The process in which the controller adjusts the current frequency lower limit according to the low-load frequency correction threshold value may be, for example, obtaining the difference between the current frequency lower limit and the low-load frequency correction threshold value; and using the difference as the current frequency lower limit.

[0052] In the embodiment of the present disclosure, the controller may further execute the following process: when the load change condition is normal, stop adjusting the current frequency lower limit.

[0053] It should be noted that the details of step 201 to step 202 can be found in Figure 1 Steps 101 to 102 in the illustrated embodiment will not be described in detail herein.

[0054] In the shutdown control method for an air conditioner in an embodiment of the present disclosure, a controller in the air conditioner, upon receiving a shutdown command, performs frequency reduction shutdown processing on the air conditioner, and obtains the outdoor ambient temperature and the outdoor coil temperature of the air conditioner; obtains the current frequency change rate of the air conditioner during the frequency reduction shutdown processing; determines the load condition of the air conditioner according to the outdoor ambient temperature and the outdoor coil temperature; determines the load change of the air conditioner according to the current frequency change rate; adjusts the current frequency lower limit of the air conditioner during the frequency reduction shutdown processing according to the load condition and the load change, thereby ensuring that the frequency of the air conditioner changes slowly during shutdown, avoiding excessive coil stress in the air conditioner, avoiding coil breakage, and avoiding shutdown failure of the air conditioner.

[0055] The following examples are used to illustrate this. Figure 3 The figure shows a schematic diagram of the air conditioner shutdown control method. Figure 3 In the process, the controller can perform the following processes: (1) Sample the outdoor ambient temperature and the outdoor coil temperature. (2) If a shutdown signal (stop command) is received from the remote controller, it will perform a frequency reduction shutdown and record the air conditioner frequency F every 1 second. n (3) Determine whether Touterloop (outdoor ambient temperature) is greater than the frequency reduction outer loop threshold (ambient temperature threshold), and whether Toutertube (outdoor coil temperature) is greater than the frequency reduction outer tube threshold (coil temperature threshold). (4) If Touterloop is greater than the frequency reduction outer loop threshold, and Toutertube is greater than the frequency reduction outer tube threshold, execute (5); if not, execute (8). (5) Determine the air conditioner frequency change rate F n-1 -F n Is it greater than the frequency reduction rate threshold? If so, execute (6); if not, execute (7). (6) Frequency lower limit = current frequency lower limit - frequency lower limit high load correction threshold (high load frequency correction threshold). (7) Frequency lower limit remains unchanged. (8) Determine the air conditioner frequency change rate F n-1 -F n Is it greater than the frequency reduction rate threshold? If so, execute (9); if not, execute (10). (9) Frequency lower limit = current frequency lower limit - frequency lower limit low load correction threshold (low load frequency correction threshold). (10) Frequency lower limit remains unchanged.

[0056] Figure 4 The present invention is a schematic structural diagram of a shutdown control device for an air conditioner according to an embodiment of the present invention.

[0057] like Figure 4 As shown, the shutdown control device of the air conditioner can be applied to a controller in the air conditioner, and the device can include: a frequency reduction shutdown processing module 401, an acquisition module 402 and an adjustment module 403.

[0058] The frequency reduction shutdown processing module 401 is used to perform frequency reduction shutdown processing on the air conditioner when a shutdown command is received, and obtain the outdoor ambient temperature and outdoor coil temperature of the air conditioner;

[0059] An acquisition module 402 is used to acquire the current frequency change rate of the air conditioner during the frequency reduction shutdown process;

[0060] The adjustment module 403 is used to adjust the current frequency lower limit of the air conditioner during the frequency reduction shutdown process according to the outdoor ambient temperature, the outdoor coil temperature and the current frequency change rate.

[0061] In one embodiment of the present disclosure, the adjustment module 403 is specifically used to determine the load condition of the air conditioner based on the outdoor ambient temperature and the outdoor coil temperature; determine the load change condition of the air conditioner based on the current frequency change rate; and adjust the current frequency lower limit of the air conditioner during the frequency reduction shutdown process based on the load condition and the load change condition.

[0062] In one embodiment of the present disclosure, the adjustment module 403 is specifically used to determine that the load condition is overloaded when the outdoor ambient temperature is greater than the ambient temperature threshold and the outdoor coil temperature is greater than the coil temperature threshold; and to determine that the load condition is normal when the outdoor ambient temperature is less than or equal to the ambient temperature threshold, or the outdoor coil temperature is less than or equal to the coil temperature threshold.

[0063] In one embodiment of the present disclosure, the adjustment module 403 is specifically used to, when the current frequency change rate is greater than the frequency reduction rate threshold, determine that the load change condition is a too fast load change; when the current frequency change rate is less than or equal to the frequency reduction rate threshold, determine that the load change condition is a normal load change.

[0064] In one embodiment of the present disclosure, the adjustment module 403 is specifically used to, when the load condition is overload and the load change condition is too fast, adjust the current frequency lower limit according to a high load frequency correction threshold; when the load condition is normal and the load change condition is too fast, adjust the current frequency lower limit according to a low load frequency correction threshold; the low load frequency correction threshold is smaller than the high load frequency correction threshold.

[0065] In one embodiment of the present disclosure, the adjustment module 403 is specifically configured to obtain a difference between the current frequency lower limit and the high-load frequency correction threshold; and use the difference as the current frequency lower limit.

[0066] In an embodiment of the present disclosure, the adjustment module 403 is further configured to stop adjusting the current frequency lower limit when the load change condition is normal.

[0067] In the shutdown control device of the air conditioner in the embodiment of the present disclosure, the controller in the air conditioner, when receiving a shutdown command, performs frequency reduction shutdown processing on the air conditioner, and obtains the outdoor ambient temperature and the outdoor coil temperature of the air conditioner; obtains the current frequency change rate of the air conditioner during the frequency reduction shutdown processing; adjusts the current frequency lower limit of the air conditioner during the frequency reduction shutdown processing according to the outdoor ambient temperature, the outdoor coil temperature and the current frequency change rate, thereby ensuring that the frequency of the air conditioner changes slowly during shutdown, avoiding excessive coil stress in the air conditioner, avoiding coil breakage, and avoiding shutdown failure of the air conditioner.

[0068] According to a third aspect of an embodiment of the present disclosure, there is also provided an electronic device, comprising: a processor; and a memory for storing instructions executable by the processor, wherein the processor is configured to execute the instructions to implement the above air conditioner shutdown control method.

[0069] In order to implement the above embodiments, the present disclosure also proposes a storage medium.

[0070] When the instructions in the storage medium are executed by a processor of an electronic device, the electronic device is enabled to execute the above method.

[0071] In order to implement the above embodiments, the present disclosure also provides a computer program product.

[0072] When the computer program product is executed by a processor of an electronic device, the electronic device is enabled to execute the above method.

[0073] Figure 5 The figure is a structural block diagram of an electronic device according to an exemplary embodiment. Figure 5 The electronic device shown is only an example and should not bring any limitation to the functions and scope of use of the embodiments of the present disclosure.

[0074] like Figure 5As shown, the electronic device 1000 includes a processor 111, which can perform various appropriate actions and processes according to a program stored in a read-only memory (ROM) 112 or a program loaded from a memory 116 to a random access memory (RAM) 113. In the RAM 113, various programs and data required for the operation of the electronic device 1000 are also stored. The processor 111, the ROM 112, and the RAM 113 are connected to each other via a bus 114. An input / output (I / O) interface 115 is also connected to the bus 114.

[0075] The following components are connected to the I / O interface 115: a memory 116 including a hard disk, etc.; and a communication part 117 including a network interface card such as a local area network (LAN) card, a modem, etc., and the communication part 117 performs communication processing via a network such as the Internet; a drive 118 is also connected to the I / O interface 115 as needed.

[0076] In particular, according to an embodiment of the present disclosure, the process described above with reference to the flowchart can be implemented as a computer software program. For example, an embodiment of the present disclosure includes a computer program carried on a computer-readable medium, and the computer program includes a program code for executing the method shown in the flowchart. In such an embodiment, the computer program can be downloaded and installed from the network through the communication part 117. When the computer program is executed by the processor 111, the above-mentioned functions defined in the method of the present disclosure are executed.

[0077] In an exemplary embodiment, a storage medium including instructions is also provided, such as a memory including instructions, and the instructions can be executed by the processor 111 of the electronic device 1000 to complete the above method. Optionally, the storage medium can be a non-transitory computer-readable storage medium, for example, the non-transitory computer-readable storage medium can be a ROM, a random access memory (RAM), a CD-ROM, a magnetic tape, a floppy disk, an optical data storage device, etc.

[0078] In the present disclosure, a computer-readable storage medium may be any tangible medium containing or storing a program that may be used by or in combination with an instruction execution system, apparatus, or device. In the present disclosure, a computer-readable signal medium may include a data signal propagated in a baseband or as part of a carrier wave, which carries a computer-readable program code. Such propagated data signals may take a variety of forms, including but not limited to electromagnetic signals, optical signals, or any suitable combination of the above. A computer-readable signal medium may also be any computer-readable medium other than a computer-readable storage medium, which may send, propagate, or transmit a program for use by or in combination with an instruction execution system, apparatus, or device. The program code contained on the computer-readable medium may be transmitted using any suitable medium, including but not limited to: wireless, wire, optical cable, RF, etc., or any suitable combination of the above.

[0079] Those skilled in the art will readily appreciate other embodiments of the present disclosure after considering the specification and practicing the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of the present disclosure that follow the general principles of the present disclosure and include common knowledge or customary techniques in the art that are not disclosed in the present disclosure. The specification and examples are intended to be exemplary only, and the true scope and spirit of the present disclosure are indicated by the following claims.

[0080] It should be understood that the present disclosure is not limited to the exact structures that have been described above and shown in the drawings, and that various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.

Claims

1. A shutdown control method for an air conditioner, characterized in that: A controller applied to an air conditioner, the method comprising: When a shutdown command is received, the air conditioner is shut down by reducing the frequency, and the outdoor ambient temperature and the outdoor coil temperature of the air conditioner are obtained; Obtaining the current frequency change rate of the air conditioner during the frequency reduction shutdown process; According to the outdoor ambient temperature, the outdoor coil temperature and the current frequency change rate, the current frequency lower limit of the air conditioner during the frequency reduction shutdown process is adjusted.

2. The method according to claim 1, characterized in that The adjusting process of the current frequency lower limit of the air conditioner during the frequency reduction shutdown process according to the outdoor ambient temperature, the outdoor coil temperature and the current frequency change rate includes: Determining the load of the air conditioner according to the outdoor ambient temperature and the outdoor coil temperature; Determining load change of the air conditioner according to the current frequency change rate; According to the load condition and the load change condition, the current lower frequency limit of the air conditioner during the frequency reduction shutdown process is adjusted.

3. The method according to claim 2, characterized in that The step of determining the load of the air conditioner according to the outdoor ambient temperature and the outdoor coil temperature includes: In a case where the outdoor ambient temperature is greater than an ambient temperature threshold and the outdoor coil temperature is greater than a coil temperature threshold, determining that the load condition is overloaded; When the outdoor ambient temperature is less than or equal to the ambient temperature threshold, or the outdoor coil temperature is less than or equal to the coil temperature threshold, it is determined that the load condition is normal.

4. The method according to claim 2, characterized in that: Determining the load change of the air conditioner according to the current frequency change rate includes: In a case where the current frequency change rate is greater than the frequency reduction rate threshold, determining that the load change condition is a too fast load change; When the current frequency change rate is less than or equal to the frequency reduction rate threshold, it is determined that the load change condition is normal.

5. The method according to claim 2, characterized in that: The adjusting process of the current frequency lower limit of the air conditioner during the frequency reduction shutdown process according to the load condition and the load change condition includes: When the load condition is an overload and the load change condition is a too fast load change, adjusting the current frequency lower limit according to the high load frequency correction threshold; When the load condition is normal and the load change condition is too fast, the current frequency lower limit is adjusted according to the low load frequency correction threshold; the low load frequency correction threshold is smaller than the high load frequency correction threshold.

6. The method according to claim 5, characterized in that The adjusting process of the current frequency lower limit according to the high load frequency correction threshold comprises: Obtaining a difference between the current frequency lower limit and the high load frequency correction threshold; The difference is used as the current frequency lower limit.

7. The method according to claim 2, characterized in that The adjusting process of the current frequency lower limit of the air conditioner during the frequency reduction shutdown process according to the load condition and the load change condition also includes: When the load change is normal, the adjustment process of the current frequency lower limit is stopped.

8. A shutdown control device for an air conditioner, characterized in that: The air conditioner shutdown control method according to any one of claims 1 to 7 is applied to a controller in the air conditioner, and the device comprises: A frequency reduction shutdown processing module is used to perform frequency reduction shutdown processing on the air conditioner when a shutdown command is received, and obtain the outdoor ambient temperature and outdoor coil temperature of the air conditioner; An acquisition module, used for acquiring the current frequency change rate of the air conditioner during the frequency reduction shutdown process; The adjustment module is used to adjust the current frequency lower limit of the air conditioner during the frequency reduction shutdown process according to the outdoor ambient temperature, the outdoor coil temperature and the current frequency change rate.

9. An electronic device, characterized in that: include: processor; a memory for storing instructions executable by the processor; The processor is configured to execute the instruction to implement the shutdown control method of the air conditioner according to any one of claims 1 to 7.

10. A non-transitory computer-readable storage medium, when instructions in the storage medium are executed by a processor, enables the processor to execute the air conditioner shutdown control method according to any one of claims 1 to 7.

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