Anti-condensation control method and system

Abstract

The invention provides an anti-condensation control method and system. The anti-condensation control method comprises the steps that the temperature Td of an electric control driving module is detected in real time, and a corresponding control mode is entered based on the temperature Td of the electric control driving module; wherein the control modes at least comprise electric control temperature control, a normal refrigeration mode and environment temperature detection; and under the control of the electric control temperature, at least condensation risk detection is included, so that anti-condensation protection is carried out based on a condensation risk detection result. The air conditioning system has reliable anti-condensation control, and the refrigerating capacity and the electrical reliability of the air conditioning system at the high temperature are improved to the maximum extent.

Description

Technical Field

[0001] The present application relates to an anti-condensation protection technology, and in particular to an anti-condensation control method and system, and belongs to the field of refrigerant control. Background Art

[0002] As the global climate becomes increasingly hotter, users have put forward higher requirements for the cooling operation range of air-conditioning units in summer. At present, the cooling capacity of most air-conditioning units will decline when the ambient temperature exceeds 35℃, and they cannot operate when it exceeds 50℃. This is mainly limited by the temperature rise of the electronic control drive module. Ordinary air cooling has a very poor effect at high ambient temperatures, resulting in the frequency of the air-conditioning compressor being limited or even unable to operate, which in turn affects the cooling capacity. The use of a refrigerant cooling system can greatly increase the heat dissipation of the electronic control drive module at high temperatures, reduce the temperature rise, and make the compressor frequency not too restricted, thereby ensuring the cooling capacity of the air conditioner.

[0003] In the prior art, most of them use the supercooled refrigerant from the condenser to cool the electronic control drive module. When the ambient temperature is high, the refrigerant temperature is still 40-50°C, the heat dissipation effect is not so ideal, and the compressor frequency will still be limited. In some technical inventions, a supercooler is added between the condenser and the electronic control heat dissipation module to further reduce the refrigerant temperature and improve the heat dissipation efficiency of the electronic control heat dissipation module. However, this method is to separate a part of the refrigerant in the mainstream path through throttling evaporation to reduce the refrigerant temperature in the mainstream path, and the separated part is directly returned to the compressor, which will lose the refrigerant flow entering the evaporator, thereby having a certain impact on the cooling capacity. In addition, too low a refrigerant temperature may cause condensation in the electronic control drive module, generating condensed water and causing circuit safety hazards.

[0004] The present invention proposes a novel refrigerant heat dissipation main flow path overcooling technology, which does not affect the refrigerant flow rate entering the evaporator in the main flow path and has reliable anti-condensation control, thereby maximizing the cooling capacity and electrical reliability of the air-conditioning system at high temperatures. Summary of the invention

[0005] In view of this, the present application provides an anti-condensation control method and system to solve or alleviate the technical problems existing in the prior art and at least provide a beneficial option.

[0006] The technical solution of the embodiment of the present application is implemented as follows: an anti-condensation control method is provided, comprising the following steps:

[0007] Real-time detection of the temperature Td of the electronic control drive module.

[0008] Entering a corresponding control mode based on the temperature Td of the electronically controlled drive module; wherein the control mode at least includes electronically controlled temperature control, normal cooling mode and ambient temperature detection.

[0009] The electronically controlled temperature control at least includes condensation risk detection, so as to perform anti-condensation protection based on the condensation risk detection result.

[0010] Further preferably, the entering into a corresponding control mode based on the temperature Td of the electronically controlled drive module includes:

[0011] Real-time detection of whether the temperature Td of the electronic control drive module is greater than a first threshold value td1.

[0012] If the electronic control drive module temperature Td is greater than the first threshold td1, it is detected whether the electronic control drive module temperature Td is greater than the second threshold td2. If the electronic control drive module temperature Td is greater than the second threshold td2, the current compressor operating frequency is used as the highest frequency, and electronic control temperature control is performed.

[0013] If the temperature Td of the electronically controlled drive module is less than or equal to the first threshold value td1, the normal cooling mode is entered and the cooling restriction is released.

[0014] If the temperature Td of the electronically controlled drive module is less than or equal to the second threshold value td2, the ambient temperature detection is started.

[0015] Further preferably, the electrically controlled temperature control includes simultaneously performing a first electrically controlled temperature control and a second electrically controlled temperature control; wherein the first electrically controlled temperature control includes:

[0016] Open the first electronic expansion valve, close the solenoid valve, change the flow direction of the refrigerant, so that the refrigerant first passes through the coaxial heat exchanger for cooling and then enters the radiator to cool the electronic control drive module, and perform condensation risk detection.

[0017] The first electronically controlled temperature control comprises:

[0018] Detect whether the temperature Td of the electronic control drive module is greater than the third threshold value td3. If the temperature Td of the electronic control drive module is greater than the third threshold value td3, perform compressor protection; otherwise, continue to detect whether the temperature Td of the electronic control drive module is greater than the third threshold value td3.

[0019] Further preferably: the ambient temperature detection includes:

[0020] Detect whether the ambient temperature Ta is greater than the first preset temperature t1. If so, perform the first electronic temperature control; otherwise, enter the cooling capacity detection.

[0021] Further preferably: the condensation risk detection includes:

[0022] Detect whether the difference between the refrigerant temperature Tc and the ambient temperature Ta is less than the first preset temperature difference tc1. If so, detect whether the duration of the difference between the refrigerant temperature Tc and the ambient temperature Ta being less than the first preset temperature difference tc1 reaches a second preset time length m2. If so, enter anti-condensation protection.

[0023] If the difference between the refrigerant temperature Tc and the ambient temperature Ta is greater than or equal to the first preset temperature difference tc1, or the duration of the difference between the refrigerant temperature Tc and the ambient temperature Ta being less than the first preset temperature difference tc1 does not reach the second preset time length m2, then continue to detect in real time whether the temperature Td of the electronic control drive module is greater than the first threshold td1.

[0024] Further preferably: the refrigeration capacity detection includes:

[0025] Detect whether the current system cooling capacity Qc is greater than the energy demand q. If so, reduce the frequency of the current compressor operation and enter the compressor frequency detection; otherwise, enter the first electronic temperature control.

[0026] Further preferably: the compressor protection comprises:

[0027] It is detected whether the duration of the electric control drive module temperature Td being greater than the third threshold value td3 reaches a first preset duration m1. If so, the compressor is controlled to be shut down for protection; otherwise, the compressor frequency is detected.

[0028] Further preferably: the compressor frequency detection includes:

[0029] Check whether the compressor frequency is greater than the minimum allowable value. If so, control the compressor frequency to decrease by n; otherwise, control the compressor to shut down for protection.

[0030] Further preferably: the anti-condensation protection comprises:

[0031] Open the solenoid valve to divide the refrigerant into two paths, one path is cooled by the coaxial heat exchanger, and the other path passes directly through the solenoid valve.

[0032] Detect whether the difference between the refrigerant temperature Tc and the ambient temperature Ta is greater than the third preset temperature difference tc3. If so, continue to detect whether the difference between the refrigerant temperature Tc and the ambient temperature Ta is greater than the third preset temperature difference tc3; otherwise, close the first electronic expansion valve, and continue to detect whether the difference between the refrigerant temperature Tc and the ambient temperature Ta is greater than the third preset temperature difference tc3. At the same time, if the duration of the difference between the refrigerant temperature Tc and the ambient temperature Ta not greater than the third preset temperature difference tc3 reaches the fourth preset time length m4, close the second electronic expansion valve and reduce the outdoor fan speed by P.

[0033] Detect whether the duration that the difference between the refrigerant temperature Tc and the ambient temperature Ta is greater than the third preset temperature difference tc3 reaches the third preset time length m3. If so, exit the anti-condensation protection and continue to detect in real time whether the temperature Td of the electronic control drive module is greater than the first threshold td1; otherwise, continue to detect whether the difference between the refrigerant temperature Tc and the ambient temperature Ta is greater than the third preset temperature difference tc3.

[0034] Further preferably: the present application also provides a system using the anti-condensation control method, comprising:

[0035] The detection module is used to detect the temperature Td of the electronic control drive module in real time.

[0036] A control module is used to enter a corresponding control mode based on the temperature Td of the electronically controlled drive module; wherein the control mode at least includes electronically controlled temperature control, normal cooling mode and ambient temperature detection.

[0037] The electronically controlled temperature control at least includes condensation risk detection, so as to perform anti-condensation protection based on the condensation risk detection result.

[0038] The embodiment of the present application adopts the above technical solution, which has the following advantages:

[0039] This application has reliable anti-condensation control, maximizing the cooling capacity and electrical reliability of the air-conditioning system at high temperatures.

[0040] The above summary is for illustrative purposes only and is not intended to be limiting in any way. In addition to the illustrative aspects, embodiments and features described above, further aspects, embodiments and features of the present application will be readily apparent by reference to the accompanying drawings and the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or technical descriptions will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0042] Figure 1 This is a flow chart of the anti-condensation control method described in this application.

[0043] Figure 2 To adopt Figure 1 System framework diagram of the anti-condensation control method. DETAILED DESCRIPTION

[0044] In the following, only some exemplary embodiments are briefly described. As those skilled in the art will appreciate, the described embodiments may be modified in various ways without departing from the spirit or scope of the present application. Therefore, the drawings and descriptions are considered to be exemplary and non-restrictive in nature.

[0045] The embodiments of the present application are described in detail below with reference to the accompanying drawings.

[0046] See also Figure 1 The present application embodiment provides an anti-condensation control method, comprising the following steps:

[0047] Real-time detection of the temperature Td of the electronic control drive module.

[0048] Entering a corresponding control mode based on the temperature Td of the electronically controlled drive module; wherein the control mode at least includes electronically controlled temperature control, normal cooling mode and ambient temperature detection.

[0049] The electronically controlled temperature control at least includes condensation risk detection, so as to perform anti-condensation protection based on the condensation risk detection result.

[0050] In this embodiment, specifically: entering a corresponding control mode based on the temperature Td of the electronically controlled drive module includes:

[0051] Real-time detection of whether the temperature Td of the electronic control drive module is greater than a first threshold value td1.

[0052] If the temperature Td of the electronic control drive module is greater than the first threshold value td1, it means that the temperature of the electronic control drive module rises too fast and there is a risk of reaching the protection value. At this time, it is necessary to increase the heat dissipation and detect whether the temperature Td of the electronic control drive module is greater than the second threshold value td2. If the temperature Td of the electronic control drive module is greater than the second threshold value td2, it means that the electronic control drive module is close to the protection value, and the compressor frequency limiting action is immediately performed, with the current compressor operating frequency as the highest frequency, and no further increase is allowed to prevent the current from continuing to increase and causing the temperature of the electronic control drive module to continue to rise, and the electronic control temperature is controlled.

[0053] If the temperature Td of the electronic control drive module is less than or equal to the first threshold value td1, it means that it is in a normal state and can continue to operate in the original mode, enter the normal cooling mode, and release the cooling restrictions, including the compressor frequency limit, and all kinds of valve control are restored to the normal cooling state.

[0054] If the temperature Td of the electronically controlled drive module is less than or equal to the second threshold value td2, the ambient temperature detection is started.

[0055] In this embodiment, specifically: the electrically controlled temperature control includes simultaneously performing a first electrically controlled temperature control and a second electrically controlled temperature control; wherein the first electrically controlled temperature control includes:

[0056] Open the first electronic expansion valve, close the solenoid valve, change the flow direction of the refrigerant, so that the refrigerant first passes through the coaxial heat exchanger for cooling and then enters the radiator to cool the electronic control drive module, and perform condensation risk detection.

[0057] In this embodiment, specifically: the condensation risk detection includes:

[0058] Detect whether the difference between the refrigerant temperature Tc and the ambient temperature Ta is less than the first preset temperature difference tc1. If so, it means that the refrigerant temperature before entering the radiator is lower than the dew point temperature of the air. If the radiator is in this state for a long time, it may cause condensation in the electronic control drive module. Detect whether the duration during which the difference between the refrigerant temperature Tc and the ambient temperature Ta is less than the first preset temperature difference tc1 reaches a second preset time length m2. If so, it means that the electronic control drive module has a condensation risk and enters anti-condensation protection.

[0059] In this embodiment, specifically: the anti-condensation protection includes:

[0060] Open the solenoid valve to divide the refrigerant into two paths. One path passes through the coaxial heat exchanger to cool down, and the other path passes directly through the solenoid valve to increase the temperature of the refrigerant entering the radiator.

[0061] Detect whether the difference between the refrigerant temperature Tc and the ambient temperature Ta is greater than the third preset temperature difference tc3. If so, it indicates that there is no condensation risk in the electronic control drive module, and continue to detect whether the difference between the refrigerant temperature Tc and the ambient temperature Ta is greater than the third preset temperature difference tc3; otherwise, close the first electronic expansion valve, further increase the temperature of the refrigerant entering the heat dissipation module, and continue to detect whether the difference between the refrigerant temperature Tc and the ambient temperature Ta is greater than the third preset temperature difference tc3. At the same time, if the duration of the difference between the refrigerant temperature Tc and the ambient temperature Ta is not greater than the third preset temperature difference tc3 reaches the fourth preset time length m4, it indicates that the temperature of the refrigerant entering the radiator needs to be further increased, close the second electronic expansion valve, and reduce the outdoor fan speed by P, in rpm. Increase the compressor exhaust temperature and reduce the heat dissipation of the condenser, thereby increasing the temperature of the refrigerant coming out of the condenser.

[0062] Detect whether the duration that the difference between the refrigerant temperature Tc and the ambient temperature Ta is greater than the third preset temperature difference tc3 reaches the third preset time length m3. If so, exit the anti-condensation protection, and restore the component status to the state before the anti-condensation protection. Continue to detect in real time whether the temperature Td of the electronic control drive module is greater than the first threshold td1; otherwise, continue to detect whether the difference between the refrigerant temperature Tc and the ambient temperature Ta is greater than the third preset temperature difference tc3.

[0063] Furthermore, if the difference between the refrigerant temperature Tc and the ambient temperature Ta is greater than or equal to the first preset temperature difference tc1, or the duration of the difference between the refrigerant temperature Tc and the ambient temperature Ta being less than the first preset temperature difference tc1 does not reach the second preset time length m2, then continue to detect in real time whether the temperature Td of the electronic control drive module is greater than the first threshold td1.

[0064] The first electronically controlled temperature control comprises:

[0065] Detect whether the temperature Td of the electronic control drive module is greater than the third threshold value td3. If the temperature Td of the electronic control drive module is greater than the third threshold value td3, it means that the temperature of the electronic control drive module is too high and compressor protection is required; otherwise, continue to detect whether the temperature Td of the electronic control drive module is greater than the third threshold value td3.

[0066] Further preferably: the compressor protection comprises:

[0067] It is detected whether the duration of the electric control drive module temperature Td being greater than the third threshold value td3 reaches a first preset duration m1. If so, the compressor is controlled to be shut down for protection; otherwise, the compressor frequency is detected.

[0068] In this embodiment, specifically: the ambient temperature detection includes:

[0069] Check whether the ambient temperature Ta is greater than the first preset temperature t1. If so, it means that the cooling demand is large, and the compressor frequency is not considered to be reduced, and the first electronic temperature control is directly performed; otherwise, it means that the cooling demand is small, and reducing the compressor frequency has little impact on user use. You can consider reducing the frequency and enter the cooling capacity detection.

[0070] In this embodiment, specifically: the cooling capacity detection includes:

[0071] Check whether the current system cooling capacity Qc is greater than the energy demand q. If so, it means that the system capacity is sufficient. Reducing the frequency of the current compressor operation to reduce the temperature of the electronic control drive module has little impact on the user end, and enter the compressor frequency detection; otherwise, it means that the system cooling capacity is insufficient and the compressor frequency cannot be reduced, and enters the first electronic control temperature control.

[0072] Specifically, the calculation method of cooling capacity Qc is as follows:

[0073]

[0074] Among them, nc = compressor real-time frequency; nmax = compressor maximum allowable frequency; Qmax = system maximum cooling capacity; α = compressor maximum volumetric efficiency; ph = high pressure; Pl = low pressure; β = pressure drop influence factor; θ = subcooling correction coefficient; γ = subcooling compensation factor.

[0075] In this embodiment, specifically: the compressor frequency detection includes:

[0076] Check whether the compressor frequency is greater than the minimum allowable value. If so, it means that the frequency can continue to be reduced and the compressor frequency is controlled to be reduced by n. Otherwise, it means that it is already the minimum value and the frequency cannot be reduced any further. The compressor is controlled to shut down for protection and directly shut down the compressor.

[0077] It should be noted that the present invention does not affect the refrigerant flow rate entering the evaporator through the main flow path, and has reliable anti-condensation control, thereby maximizing the cooling capacity and electrical reliability of the air-conditioning system at high temperatures.

[0078] See also Figure 2 The present application also provides a system using the anti-condensation control method, comprising:

[0079] The detection module is used to detect the temperature Td of the electronic control drive module in real time.

[0080] A control module is used to enter a corresponding control mode based on the temperature Td of the electronically controlled drive module; wherein the control mode at least includes electronically controlled temperature control, normal cooling mode and ambient temperature detection.

[0081] The electronically controlled temperature control at least includes condensation risk detection, so as to perform anti-condensation protection based on the condensation risk detection result.

[0082] Furthermore, when the present application is working, the cooling and heating modes can be switched by switching the four-way valve, and the air injection enthalpy increase function is provided. The coaxial heat exchanger is generally only used in high-load cooling to reduce the refrigerant temperature before entering the radiator and improve the heat dissipation efficiency.

[0083] In cooling mode, the first electronic expansion valve is closed, the second electronic expansion valve acts as a throttling valve, and the solenoid valve is opened.

[0084] The high-temperature and high-pressure gaseous refrigerant discharged by the compressor passes through the four-way valve into the outdoor heat exchanger for condensation and cooling. The supercooled industrial refrigerant passes through the solenoid valve and enters the radiator to cool the electronic control drive module. The refrigerant coming out is divided into two paths. The main refrigerant directly enters the economizer, and the auxiliary refrigerant becomes low-temperature refrigerant after throttling by the second electronic expansion valve and enters the economizer. The main and auxiliary refrigerants exchange heat in the economizer. The main refrigerant is cooled and the degree of supercooling increases, which reduces the enthalpy value but increases the enthalpy difference, thereby increasing the cooling capacity. The auxiliary refrigerant is heated up and becomes gaseous refrigerant and returns to the medium-pressure chamber of the compressor.

[0085] However, at high ambient temperatures, the temperature of the refrigerant coming out of the outdoor heat exchanger is still very high. At this time, the heat dissipation efficiency of the radiator is not high, and the temperature of the electronic control drive module is very high, which is easy to trigger the compressor frequency limit protection, resulting in a decrease in the system's cooling capacity. At this time, the solenoid valve is closed, the first electronic expansion valve is fully opened, and the refrigerant from the outdoor heat exchanger first enters the coaxial heat exchanger and the low-temperature refrigerant before entering the gas-liquid separator for heat exchange, and then enters the radiator after the temperature is reduced, which can effectively reduce the temperature of the control drive module, give full play to the performance of the compressor, and ensure the system's cooling capacity.

[0086] However, if the refrigerant temperature is lower than the dew point temperature of the environment, condensation will occur on the radiator or the electronic control drive module, causing electrical safety hazards. At this time, it is necessary to judge the operating mode of each component of the system based on the temperature value of each thermocouple to achieve the purpose of being safe without having too much impact on the cooling capacity.

[0087] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any technician familiar with the technical field can easily think of various changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. A method for preventing condensation, characterized in that: The following steps are involved: Real-time detection of the temperature Td of the electronic control drive module; Entering a corresponding control mode based on the temperature Td of the electronically controlled drive module; wherein the control mode at least includes electronically controlled temperature control, normal cooling mode and ambient temperature detection; The electronically controlled temperature control at least includes condensation risk detection, so as to perform anti-condensation protection based on the condensation risk detection result.

2. The anti-condensation control method according to claim 1, characterized in that: The entering into a corresponding control mode based on the temperature Td of the electronically controlled drive module comprises: Real-time detection of whether the temperature Td of the electronic control drive module is greater than a first threshold value td1; If the temperature Td of the electronically controlled driving module is greater than the first threshold value td1, it is detected whether the temperature Td of the electronically controlled driving module is greater than the second threshold value td2. If the temperature Td of the electronically controlled driving module is greater than the second threshold value td2, the current frequency of the compressor operation is taken as the highest frequency, and the electronically controlled temperature control is performed; If the temperature Td of the electronically controlled drive module is less than or equal to the first threshold value td1, the normal cooling mode is entered and the cooling restriction is released; If the temperature Td of the electronically controlled drive module is less than or equal to the second threshold value td2, the ambient temperature detection is started.

3. The anti-condensation control method according to claim 2, characterized in that: The electric temperature control includes simultaneously performing a first electric temperature control and a second electric temperature control; wherein the first electric temperature control includes: Open the first electronic expansion valve, close the solenoid valve, change the flow direction of the refrigerant, and allow the refrigerant to cool down through the coaxial heat exchanger before entering the radiator to cool down the electronic control drive module, and perform condensation risk detection; The first electronically controlled temperature control comprises: Detect whether the temperature Td of the electronic control drive module is greater than the third threshold value td3. If the temperature Td of the electronic control drive module is greater than the third threshold value td3, perform compressor protection; otherwise, continue to detect whether the temperature Td of the electronic control drive module is greater than the third threshold value td3.

4. The anti-condensation control method according to claim 2, characterized in that: The environmental temperature detection includes: Detect whether the ambient temperature Ta is greater than the first preset temperature t1. If so, perform the first electronic temperature control; otherwise, enter the cooling capacity detection.

5. The anti-condensation control method according to claim 3, characterized in that: The condensation risk detection comprises: Detect whether the difference between the refrigerant temperature Tc and the ambient temperature Ta is less than the first preset temperature difference tc1. If so, detect whether the duration of the difference between the refrigerant temperature Tc and the ambient temperature Ta being less than the first preset temperature difference tc1 reaches a second preset time length m2. If so, enter the anti-condensation protection mode; If the difference between the refrigerant temperature Tc and the ambient temperature Ta is greater than or equal to the first preset temperature difference tc1, or the duration of the difference between the refrigerant temperature Tc and the ambient temperature Ta being less than the first preset temperature difference tc1 does not reach the second preset time length m2, then continue to detect in real time whether the temperature Td of the electronic control drive module is greater than the first threshold td1.

6. The anti-condensation control method according to claim 4, characterized in that: The refrigeration capacity detection comprises: Detect whether the current system cooling capacity Qc is greater than the energy demand q. If so, reduce the frequency of the current compressor operation and enter the compressor frequency detection; otherwise, enter the first electronic temperature control.

7. The anti-condensation control method according to claim 3, characterized in that: The compressor protection includes: It is detected whether the duration of the electric control drive module temperature Td being greater than the third threshold value td3 reaches a first preset duration m1. If so, the compressor is controlled to be shut down for protection; otherwise, the compressor frequency is detected.

8. The anti-condensation control method according to claim 6, characterized in that: The compressor frequency detection comprises: Check whether the compressor frequency is greater than the minimum allowable value. If so, control the compressor frequency to decrease by n; otherwise, control the compressor to shut down for protection.

9. The anti-condensation control method according to claim 5, characterized in that: The anti-condensation protection comprises: Open the solenoid valve to divide the refrigerant into two paths, one path passes through the coaxial heat exchanger for cooling, and the other path passes directly through the solenoid valve; Detect whether the difference between the refrigerant temperature Tc and the ambient temperature Ta is greater than the third preset temperature difference tc3. If so, continue to detect whether the difference between the refrigerant temperature Tc and the ambient temperature Ta is greater than the third preset temperature difference tc3; otherwise, close the first electronic expansion valve, and continue to detect whether the difference between the refrigerant temperature Tc and the ambient temperature Ta is greater than the third preset temperature difference tc3. At the same time, if the duration of the difference between the refrigerant temperature Tc and the ambient temperature Ta not greater than the third preset temperature difference tc3 reaches a fourth preset time length m4, close the second electronic expansion valve, and reduce the outdoor fan speed by P; Detect whether the duration that the difference between the refrigerant temperature Tc and the ambient temperature Ta is greater than the third preset temperature difference tc3 reaches the third preset time length m3. If so, exit the anti-condensation protection and continue to detect in real time whether the temperature Td of the electronic control drive module is greater than the first threshold td1; otherwise, continue to detect whether the difference between the refrigerant temperature Tc and the ambient temperature Ta is greater than the third preset temperature difference tc3.

10. A system using the anti-condensation control method according to any one of claims 1 to 9, characterized in that: include: A detection module is used to detect the temperature Td of the electronic control drive module in real time; A control module, used for entering a corresponding control mode based on the temperature Td of the electronically controlled drive module; wherein the control mode at least includes electronically controlled temperature control, normal cooling mode and ambient temperature detection; The electronically controlled temperature control at least includes condensation risk detection, so as to perform anti-condensation protection based on the condensation risk detection result.

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