Air conditioner system and control method thereof

Abstract

An air conditioner system includes an air conditioner and a cloud platform. The air conditioner includes an indoor unit and an outdoor unit. The cloud platform is configured to: in a case where the air conditioner is in a heating mode, determine that the outdoor unit performs one of defrosting and ending defrosting; if determining that operating parameters of the outdoor unit satisfy a first preset condition, send a first sub-instruction to the outdoor unit, so that the outdoor unit starts defrosting according to the first sub-instruction; if determining that the operating parameters satisfy any one of a plurality of second preset conditions, send a second sub-instruction to the outdoor unit, so that the outdoor unit ends defrosting according to the second sub-instruction.

What is claimed is: 
     
         1 . An air conditioner system, comprising:
 at least one air conditioner including an indoor unit and an outdoor unit; and   a cloud platform communicatively connected to the outdoor unit, the cloud platform being configured to:   in a case where the air conditioner is in a heating mode, determine the outdoor unit to perform one of defrosting and ending defrosting according to operating parameters of the outdoor unit;   if determining that the operating parameters satisfy a first preset condition, send a first sub-instruction to the outdoor unit, so that the outdoor unit starts defrosting according to the first sub-instruction; and   if determining that the operating parameters satisfy any one of a plurality of second preset conditions, send a second sub-instruction to the outdoor unit, so that the outdoor unit ends defrosting according to the second sub-instruction;   wherein the plurality of second preset conditions include:
 a first determining condition, the first determining condition including using at least one of a minimum value of a heat exchange pipe temperature, a relative humidity of an outdoor environment, time when the outdoor unit has performed defrosting, a maximum value of an exhaust pressure of the outdoor unit, or a maximum value of an exhaust temperature of the outdoor unit as a determining parameter; 
 a second determining condition, the second determining condition including using at least one of the time when the outdoor unit has performed defrosting or the maximum value of the exhaust pressure of the outdoor unit as a determining parameter; and 
   a third determining condition, the third determining condition including using the time when the outdoor unit has performed defrosting as a determining parameter.   
     
     
         2 . The air conditioner system according to  claim 1 , wherein the first preset condition includes a first preset sub-condition and a second preset sub-condition, and the cloud platform is further configured to:
 if the operating parameters of the outdoor unit satisfy the first preset sub-condition and the second preset sub-condition, send the first sub-instruction to the outdoor unit, so that the outdoor unit starts defrosting according to the first sub-instruction;   wherein the first preset sub-condition includes a relationship between an accumulated heating time of the outdoor unit and a minimum value of an outdoor ambient temperature;   the second preset sub-condition includes the outdoor ambient temperature that meets a target condition, a relationship among the minimum value of the heat exchange pipe temperature, the outdoor ambient temperature, and a humidity threshold of the relative humidity of the outdoor environment.   
     
     
         3 . The air conditioner system according to  claim 1 , wherein the first determining condition includes a plurality of first determining sub-conditions, and priorities of the plurality of first determining sub-conditions are different from each other; the second determining condition includes a plurality of second determining sub-conditions, and priorities of the plurality of second determining sub-conditions are different from each other;
 the plurality of first determining sub-conditions include:
 a first preset relationship including the minimum value of the heat exchange pipe temperature; 
 a second preset relationship including the relative humidity of the outdoor environment and the time when the outdoor unit has performed defrosting; 
 a third preset relationship including the relative humidity of the outdoor environment, the time when the outdoor unit has performed defrosting, a duration during which the minimum value of the heat exchange pipe temperature is greater than or equal to a first preset temperature, and the maximum value of the exhaust pressure of the outdoor unit; 
 a fourth preset relationship including the relative humidity of the outdoor environment, the time when the outdoor unit has performed defrosting, and a duration during which the minimum value of the heat exchange pipe temperature is greater than or equal to a second preset temperature; the second preset temperature being less than the first preset temperature; and 
 a fifth preset relationship including the relative humidity of the outdoor environment and the maximum value of the exhaust temperature of the outdoor unit; priorities of the first preset relationship, the second preset relationship, the third preset relationship, the fourth preset relationship, and the fifth preset relationship being arranged in descending order; 
   the plurality of second determining sub-conditions include:
 a sixth preset relationship including the time when the outdoor unit has performed defrosting, the maximum value of the exhaust pressure of the outdoor unit, and a first pressure threshold; and 
 a seventh preset relationship including the time when the outdoor unit has performed defrosting, the maximum value of the exhaust pressure of the outdoor unit, and a second pressure threshold; priorities of the sixth preset relationship and the seventh preset relationship being arranged in descending order. 
   
     
     
         4 . The air conditioner system according to  claim 1 , wherein the outdoor unit includes:
 a sensor configured to collect the operating parameters of the outdoor unit;   a communication device configured to send the operating parameters of the outdoor unit to the cloud platform and receive the first sub-instruction and the second sub-instruction sent by the cloud platform; and   a controller configured to control the outdoor unit to perform defrosting according to the first sub-instruction and control the outdoor unit to end defrosting according to the second sub-instruction.   
     
     
         5 . The air conditioner system according to  claim 1 , wherein the at least one air conditioner includes a plurality of air conditioners, the cloud platform is communicatively connected to a plurality of outdoor units in the plurality of air conditioners, and the cloud platform is configured to:
 in a case where at least one of the plurality of air conditioners is in the heating mode, determine a heat exchange mode of the plurality of outdoor units and determine an alternate defrosting decision of the plurality of outdoor units according to the heat exchange mode and the operating parameters of the plurality of outdoor units; the alternate defrosting decision including the cloud platform determining that the plurality of outdoor units each perform one of defrosting and ending defrosting;   send a first instruction and a second instruction to a corresponding outdoor unit, so that the corresponding outdoor unit performs one of defrosting and ending defrosting according to the first instruction and the second instruction; the first instruction including the first sub-instruction and the second sub-instruction.   
     
     
         6 . The air conditioner system according to  claim 5 , wherein the cloud platform is further configured to:
 determine a target outdoor unit according to the heat exchange mode;   if the operating parameters of the target outdoor unit satisfy the first preset condition, send the first sub-instruction to the target outdoor unit, so that the target outdoor unit starts defrosting according to the first sub-instruction; the target outdoor unit being an outdoor unit of the plurality of outdoor units required to be defrosted;   if the operating parameters of the target outdoor unit satisfy the second preset condition, send the second sub-instruction to the target outdoor unit, so that the target outdoor unit ends defrosting according to the second sub-instruction; and   if the operating parameters of another outdoor unit of the plurality of outdoor units other than the target outdoor unit satisfy a third preset condition when the target outdoor unit finishes defrosting, send the second instruction to the another outdoor unit; the third preset condition includes using at least one of time when the heat exchange pipe temperature of the target outdoor unit is greater than or equal to a third preset temperature, transition time of the heat exchange mode, a maximum value of the exhaust pressure of the target outdoor unit, or the relative humidity of the outdoor environment as a determining parameter.   
     
     
         7 . The air conditioner system according to  claim 6 , wherein the first preset condition includes a first preset sub-condition and a second preset sub-condition, and the cloud platform is further configured to:
 if the operating parameters of the outdoor unit satisfy the first preset sub-condition and the second preset sub-condition, send the first sub-instruction to the outdoor unit, so that the outdoor unit starts defrosting according to the first sub-instruction;   wherein the first preset sub-condition includes a relationship between an accumulated heating time of the outdoor unit and a minimum value of an outdoor ambient temperature;   the second preset sub-condition includes the outdoor ambient temperature that meets a target condition, a relationship among the minimum value of the heat exchange pipe temperature, the outdoor ambient temperature, and a humidity threshold of the relative humidity of the outdoor environment.   
     
     
         8 . The air conditioner system according to  claim 5 , wherein the outdoor unit includes:
 a sensor configured to collect the operating parameters of the plurality of outdoor units;   a communication device configured to send the operating parameters of the plurality of outdoor units to the cloud platform and receive the first instruction and the second instruction sent by the cloud platform; and   a controller configured to control the plurality of outdoor units to perform one of defrosting and ending defrosting according to the first instruction and the second instruction.   
     
     
         9 . The air conditioner system according to  claim 1 , wherein the outdoor unit includes a compressor, and the air conditioner system further comprises:
 a cloud management platform communicatively connected to the outdoor unit, the cloud management platform being configured to receive and send the operating parameters of the outdoor unit, receive a third instruction and send the third instruction to the outdoor unit, and control an operating mode of the air conditioner;   wherein the cloud platform is communicatively connected to the cloud management platform, and the cloud platform is further configured to:   perform a target calculation according to the operating parameters of the outdoor unit;   send the third instruction to the cloud management platform, so as to send the third instruction to a corresponding outdoor unit through the cloud management platform, so that the outdoor unit adjusts a maximum value of a target frequency of the compressor according to the third instruction, and a maximum value of an actual frequency of the compressor is substantially equal to the maximum value of the target frequency.   
     
     
         10 . The air conditioner system according to  claim 9 , wherein the cloud management platform includes:
 an Internet of Things (IoT) management platform communicatively connected to the outdoor unit, the IoT management platform being configured to perform information interaction with the outdoor unit, receive the operating parameters of the outdoor unit, and send the operating parameters to the cloud platform; and   a server communicatively connected to the cloud platform and the IoT management platform, the server being configured to perform human-computer interaction and update and maintain a database; the database being created by the cloud platform, and stored in the cloud platform.   
     
     
         11 . The air conditioner system according to  claim 10 , wherein the outdoor unit includes:
 a sensor configured to collect the operating parameters of the outdoor unit;   a communication device configured to perform information interaction with the IoT management platform, send the operating parameters of the outdoor unit, and receive the third instruction from the cloud platform; and   a controller configured to adjust the maximum value of the target frequency of the compressor according to the third instruction.   
     
     
         12 . The air conditioner system according to  claim 10 , wherein the IoT management platform includes:
 a communication interface configured to maintain an access state of the outdoor unit, receive the third instruction, and send the third instruction to the outdoor unit; and   a service gateway configured to receive the operating parameters of the outdoor unit, send the operating parameters to the cloud platform, receive operating instructions sent by the server, and send the operating parameters to the server.   
     
     
         13 . The air conditioner system according to  claim 10 , wherein the cloud platform is further configured to:
 call the database and train data models of a heating control constant and a cooling control constant;   correct the data models according to latest operating parameters of the outdoor unit collected;   send a target configuration to the outdoor unit according to one of a set model and historical data; and   receive operation instructions sent by the server and send the data models of the heating control constant and the cooling control constant to the server.   
     
     
         14 . The air conditioner system according to  claim 9 , wherein when the cloud platform performs the target calculation of the outdoor unit, the cloud platform is configured to:
 calculate one of a heating control constant and a cooling control constant according to the operating parameters and send one of the heating control constant and the cooling control constant to the outdoor unit through the cloud management platform.   
     
     
         15 . The air conditioner system according to  claim 14 , wherein the cloud platform is further configured to:
 obtain a maximum value of a saturation pressure according to a maximum value of a condensing temperature in a case where the outdoor unit is heating and use a control target value to correct the maximum value of the saturation pressure, so as to obtain the heating control constant;   if a set parameter is equal to a first preset value, determine a minimum value of a target evaporation temperature of the outdoor unit as the cooling control constant;   if the set parameter is equal to a second preset value, determine the cooling control constant according to a corresponding relationship between the set parameter and the cooling control constant.   
     
     
         16 . A control method of an air conditioner system, wherein the air conditioner system includes:
 at least one air conditioner including an indoor unit and an outdoor unit; and   a cloud platform communicatively connected to the outdoor unit;   the method comprises:
 collecting and sending operating parameters of the outdoor unit; 
 if determining that the operating parameters satisfy a first preset condition, sending a first sub-instruction to the outdoor unit, so that the outdoor unit starts defrosting according to the first sub-instruction; and 
 if determining that the operating parameters satisfy any one of a plurality of second preset conditions, sending a second sub-instruction to the outdoor unit, so that the outdoor unit ends defrosting according to the second sub-instruction; 
 wherein the plurality of second preset conditions include:
 a first determining condition, the first determining condition including using at least one of a minimum value of a heat exchange pipe temperature, a relative humidity of an outdoor environment, time when the outdoor unit has performed defrosting, a maximum value of an exhaust pressure of the outdoor unit, or a maximum value of an exhaust temperature of the outdoor unit as a determining parameter; 
 a second determining condition, the second determining condition including using at least one of the time when the outdoor unit has performed defrosting or the maximum value of the exhaust pressure of the outdoor unit as a determining parameter; and 
 a third determining condition, the third determining condition including using the time when the outdoor unit has performed defrosting as a determining parameter. 
 
   
     
     
         17 . The method according to  claim 16 , wherein the at least one air conditioner includes a plurality of air conditioners, and the cloud platform is communicatively connected to a plurality of outdoor units in the plurality of air conditioners, and the method further comprises:
 in a case where at least one of the plurality of air conditioners is in the heating mode, the cloud platform determining a heat exchange mode of the plurality of outdoor units, determining an alternate defrosting decision according to the heat exchange mode and the operating parameters of the plurality of outdoor units, and sending the first instruction and a second instruction to a corresponding outdoor unit; the alternate defrosting decision including determining, by the cloud platform, that the plurality of outdoor units each perform one of defrosting and ending defrosting; the first instruction including the first sub-instruction and the second sub-instruction;   the corresponding outdoor unit performing one of defrosting and ending defrosting according to the first instruction and the second instruction.   
     
     
         18 . A control method of an air conditioner system, wherein the air conditioner system includes:
 an air conditioner including an indoor unit and an outdoor unit, the outdoor unit including a compressor;   a cloud management platform communicatively connected to the outdoor unit; and   a cloud platform communicatively connected to the cloud management platform;   the method comprises:
 collecting and sending operating parameters of the outdoor unit; 
 the cloud management platform receiving the operating parameters of the outdoor unit and sending the operating parameters to the cloud platform; 
 the cloud platform performing a target calculation according to the operating parameters, and sending a third instruction to the cloud management platform; the third instruction including a heating control constant and a cooling control constant calculated by the cloud platform according to the operating parameters; 
 the cloud management platform sending the third instruction to a corresponding outdoor unit; 
 the outdoor unit adjusting a maximum value of a target frequency of the compressor according to the third instruction, so that a maximum value of an actual frequency of the compressor is substantially equal to the maximum value of the target frequency; 
 wherein that the cloud platform performing the target calculation according to the operating parameters and sending the third instruction to the cloud management platform, includes:
 obtaining a maximum value of a saturation pressure according to a maximum value of a condensing temperature in a case where the outdoor unit is heating and correcting the maximum value of the saturation pressure by using a control target value, so as to obtain the heating control constant; 
 if a set parameter is equal to a first preset value, determining a minimum value of a target evaporation temperature of the outdoor unit as the cooling control constant; 
 if the set parameter is equal to a second preset value, determining the cooling control constant according to a corresponding relationship between the set parameter and the cooling control constant. 
 
   
     
     
         19 . The method according to  claim 18 , wherein the cloud management platform includes an IoT management platform and a server, and that the cloud management platform receiving the operating parameters of the outdoor unit and sending the operating parameters to the cloud platform, including:
 the IoT management perform information interaction with the outdoor unit, receiving the operating parameters of the outdoor unit, and sending the operating parameters to the cloud platform; and   the server performing human-computer interaction and updating and maintaining a database.   
     
     
         20 . The method according to  claim 19 , further comprising:
 calling, by the cloud platform, a database and training data models of the heating control constant and the cooling control constant;   correcting, by the cloud platform, the data models according to latest operating parameters of the outdoor unit collected;   sending, by the cloud platform, a target configuration to the outdoor unit according to one of a set model set and historical data;   receiving, by the cloud platform, operation instructions sent by the server, and sending the data models to the server.