A method and system for anti-condensation control

Abstract

The application provides an anti-condensation control method and system; the anti-condensation control method comprises the following steps: detecting the temperature Td of an electric control driving module in real time, and entering a corresponding control mode based on the temperature Td of the electric control driving module; wherein the control mode at least comprises electric control temperature control, normal refrigeration mode and environment temperature detection; and under the electric control temperature control, at least comprising condensation risk detection, to carry out anti-condensation protection based on the condensation risk detection result. The application has reliable anti-condensation control, and maximally improves the refrigerating capacity and electrical reliability of an air conditioning system at high temperature.

Description

Technical Field

[0001] This application relates to an anti-condensation protection technology, and more particularly to an anti-condensation control method and system, belonging to the field of refrigerant control. Background Technology

[0002] As global temperatures rise, users are demanding higher cooling capacity from air conditioning units during the summer. Currently, most air conditioning units experience a decrease in cooling capacity when the ambient temperature exceeds 35°C, and fail to operate above 50°C. This is primarily due to the temperature rise of the electronic control drive module. Ordinary air-cooled systems are ineffective at high temperatures, limiting the compressor's frequency or even preventing it from operating, thus impacting cooling capacity. However, using a refrigerant cooling system can significantly improve the heat dissipation of the electronic control drive module at high temperatures, reducing temperature rise and allowing the compressor frequency to operate more freely, thereby ensuring the air conditioner's cooling capacity.

[0003] In existing technologies, most methods use subcooled refrigerant from the condenser to cool the electronic control drive module. However, at high ambient temperatures, the refrigerant temperature remains between 40 and 50°C, resulting in less than ideal heat dissipation and limiting compressor frequency. Some inventions incorporate a subcooler between the condenser and the electronic control heat dissipation module to further reduce the refrigerant temperature and improve its efficiency. However, this method diverts a portion of the main refrigerant flow through a throttling evaporator to lower its temperature, while the diverted portion returns directly to the compressor. This results in a loss of refrigerant flow into the evaporator, impacting cooling capacity. Furthermore, excessively low refrigerant temperatures can cause condensation on the electronic control drive module, creating potential electrical safety hazards.

[0004] This invention proposes a novel refrigerant heat dissipation mainstream undercooling technology that does not affect the refrigerant flow rate into the evaporator and has reliable anti-condensation control, maximizing the cooling capacity and electrical reliability of the air conditioning system at high temperatures. Summary of the Invention

[0005] In view of this, this application provides a method and system for preventing condensation control, in order to solve or alleviate the technical problems existing in the prior art, and at least provide a beneficial alternative.

[0006] The technical solution of this application embodiment is implemented as follows: A method for preventing condensation control is provided, comprising the following steps:

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

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

[0009] Under the electronically controlled temperature, at least condensation risk detection is included to provide anti-condensation protection based on the condensation risk detection results.

[0010] A further preferred embodiment: the step of entering the 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 the first threshold td1.

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

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

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

[0015] A further preferred embodiment: the electronically controlled temperature control includes simultaneously performing a first electronically controlled temperature control and a second electronically controlled temperature control; wherein, the first electronically controlled temperature control includes:

[0016] Open the first electronic expansion valve, close the solenoid valve, change the refrigerant flow direction so that the refrigerant first passes through the coaxial heat exchanger to cool down before entering the radiator to cool the electronically controlled drive module, and perform condensation risk detection.

[0017] The first electronically controlled temperature control includes:

[0018] The system detects whether the temperature Td of the electronic control drive module is greater than the third threshold td3. If the temperature Td of the electronic control drive module is greater than the third threshold td3, the compressor protection is activated; otherwise, the system continues to detect whether the temperature Td of the electronic control drive module is greater than the third threshold td3.

[0019] A further preferred embodiment: the ambient temperature detection includes:

[0020] The system detects whether the ambient temperature Ta is greater than the first preset temperature t1. If it is, the system performs the first electronic temperature control; otherwise, it enters the cooling capacity detection phase.

[0021] A further preferred embodiment: the condensation risk detection includes:

[0022] The system detects whether the difference between the refrigerant temperature Tc and the ambient temperature Ta is less than the first preset temperature difference tc1. If it is less, the system detects whether the duration for which the difference between the refrigerant temperature Tc and the ambient temperature Ta is less than the first preset temperature difference tc1 reaches the second preset duration m2. If it is, the system enters the anti-condensation protection mode.

[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 if the duration for which the difference between the refrigerant temperature Tc and the ambient temperature Ta is less than the first preset temperature difference tc1 does not reach the second preset duration m2, then the temperature Td of the electronic control drive module will continue to be monitored in real time to see if it is greater than the first threshold td1.

[0024] A further preferred embodiment: the cooling capacity detection includes:

[0025] The system checks whether the current cooling capacity Qc is greater than the energy demand q. If it is, the compressor frequency is reduced and compressor frequency detection is initiated; otherwise, the system enters the first electronic temperature control phase.

[0026] A further preferred embodiment of the compressor protection includes:

[0027] If the duration for which the temperature Td of the electronically controlled drive module is greater than the third threshold td3 reaches the first preset duration m1, the compressor is controlled to shut down for protection; otherwise, the compressor frequency is detected.

[0028] A further preferred embodiment: the compressor frequency detection includes:

[0029] The compressor frequency is checked to see if it is greater than the minimum allowable value. If it is, the compressor frequency is reduced by n; otherwise, the compressor is shut down for protection.

[0030] A further preferred embodiment of the anti-condensation protection includes:

[0031] Open the solenoid valve to split 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.

[0032] If the difference between the refrigerant temperature Tc and the ambient temperature Ta is greater than the third preset temperature difference tc3, then continue to check if 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 check if 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 for which 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 duration m4, then close the second electronic expansion valve and reduce the outdoor fan speed P.

[0033] If the duration for which 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 duration m3, the anti-condensation protection is exited and the temperature Td of the electronic control drive module is monitored in real time to see if it is greater than the first threshold td1; otherwise, the temperature difference between the refrigerant temperature Tc and the ambient temperature Ta is monitored to see if it is greater than the third preset temperature difference tc3.

[0034] Further preferred embodiment: This application also provides a system employing the aforementioned 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 includes at least electronically controlled temperature control, normal cooling mode, and ambient temperature detection.

[0037] Under the electronically controlled temperature, at least condensation risk detection is included to provide anti-condensation protection based on the condensation risk detection results.

[0038] The embodiments of this application have the following advantages due to the adoption of the above technical solutions:

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

[0040] The above overview 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 this application will become readily apparent from the accompanying drawings and the following detailed description. Attached Figure Description

[0041] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

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

[0043] Figure 2 To adopt Figure 1 The system framework diagram of the aforementioned anti-condensation control method. Detailed Implementation

[0044] In the following description, only certain exemplary embodiments are briefly described. As those skilled in the art will recognize, the described embodiments can be modified in various ways without departing from the spirit or scope of this application. Therefore, the drawings and description are considered to be exemplary in nature and not restrictive.

[0045] The embodiments of this application will now be described in detail with reference to the accompanying drawings.

[0046] Please see Figure 1 This application provides an anti-condensation control method, including the following steps:

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

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

[0049] Under the electronically controlled temperature, at least condensation risk detection is included to provide anti-condensation protection based on the condensation risk detection results.

[0050] In this embodiment, specifically: entering the 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 the first threshold td1.

[0052] If the temperature Td of the electronically controlled drive module is greater than the first threshold td1, it indicates that the temperature of the electronically controlled drive module is rising 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 electronically controlled drive module is greater than the second threshold td2. If the temperature Td of the electronically controlled drive module is greater than the second threshold td2, it indicates that the electronically controlled drive module is close to the protection value. Immediately, the compressor frequency limiting action is performed, and the current operating frequency of the compressor is set as the highest frequency. It is not allowed to rise further to prevent the current from continuing to increase and causing the temperature of the electronically controlled drive module to continue to rise. Electronic temperature control is then implemented.

[0053] If the temperature Td of the electronic control drive module is less than or equal to the first threshold td1, it indicates that it is in a normal state and can continue to operate in the original mode, enter the normal cooling mode, and remove the cooling restrictions, including compressor frequency limiting, and restore all valve controls to normal cooling state.

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

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

[0056] Open the first electronic expansion valve, close the solenoid valve, change the refrigerant flow direction so that the refrigerant first passes through the coaxial heat exchanger to cool down before entering the radiator to cool the electronically controlled drive module, and perform condensation risk detection.

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

[0058] The system checks whether the difference between the refrigerant temperature Tc and the ambient temperature Ta is less than the first preset temperature difference tc1. If it is less, 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 on the electronic control drive module. The system checks whether the duration for which the difference between the refrigerant temperature Tc and the ambient temperature Ta is less than the first preset temperature difference tc1 reaches the second preset duration m2. If it is, it means that there is a risk of condensation on the electronic control drive module, and the system enters the anti-condensation protection mode.

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

[0060] Open the solenoid valve to split 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 to raise the temperature of the refrigerant entering the radiator.

[0061] The system checks whether the difference between the refrigerant temperature Tc and the ambient temperature Ta is greater than the third preset temperature difference tc3. If it is, it indicates that there is no risk of condensation in the electronically controlled drive module. The system continues to check whether the difference between the refrigerant temperature Tc and the ambient temperature Ta is greater than the third preset temperature difference tc3. Otherwise, the first electronic expansion valve is closed to further increase the refrigerant temperature entering the heat dissipation module, and the system continues to check whether the difference between the refrigerant temperature Tc and the ambient temperature Ta is greater than the third preset temperature difference tc3. If the duration for which 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 duration m4, it indicates that the refrigerant temperature entering the radiator needs to be further increased. The second electronic expansion valve is closed, and the outdoor fan speed is reduced by P (unit: rpm). This increases the compressor discharge temperature and simultaneously reduces the condenser's heat dissipation, thereby increasing the refrigerant temperature exiting the condenser.

[0062] If the duration for which 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 duration m3, the anti-condensation protection is exited, the component status is restored to the state before the anti-condensation protection, and the temperature Td of the electronic control drive module is monitored in real time to see if it is greater than the first threshold td1; otherwise, the difference between the refrigerant temperature Tc and the ambient temperature Ta is monitored to see if it 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 if the duration for which the difference between the refrigerant temperature Tc and the ambient temperature Ta is less than the first preset temperature difference tc1 does not reach the second preset duration m2, then the temperature Td of the electronic control drive module will continue to be monitored in real time to see if it is greater than the first threshold td1.

[0064] The first electronically controlled temperature control includes:

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

[0066] A further preferred embodiment of the compressor protection includes:

[0067] If the duration for which the temperature Td of the electronically controlled drive module is greater than the third threshold td3 reaches the first preset duration m1, the compressor is controlled to shut down for protection; otherwise, the compressor frequency is detected.

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

[0069] If the ambient temperature Ta is greater than the first preset temperature t1, it indicates a high cooling demand. In this case, the compressor frequency will not be reduced, and the first electronic temperature control will be directly implemented. Otherwise, it indicates a low cooling demand. Reducing the compressor frequency will have little impact on the user experience. Therefore, the frequency can be reduced, and the cooling capacity test can be initiated.

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

[0071] The system checks whether the current cooling capacity Qc is greater than the energy requirement q. If it is, it means that the system capacity is sufficient. Reducing the current compressor operating frequency to lower the temperature of the electronic control drive module has little impact on the user end, and the system enters the compressor frequency detection stage. Otherwise, it means that the system cooling capacity is insufficient, and the compressor frequency cannot be reduced, so the system enters the first electronic control temperature control stage.

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

[0073]

[0074] Where 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 if the compressor frequency is greater than the minimum allowable value. If it is, the frequency can be further reduced, and the compressor frequency is controlled to decrease by n. Otherwise, it means that it has already reached the minimum value, and the frequency cannot be reduced further. Control the compressor shutdown protection and shut down the compressor directly.

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

[0078] Please see Figure 2 This application also provides a system employing the aforementioned 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 includes at least electronically controlled temperature control, normal cooling mode, and ambient temperature detection.

[0081] Under the electronically controlled temperature, at least condensation risk detection is included to provide anti-condensation protection based on the condensation risk detection results.

[0082] Furthermore, this application allows for switching between cooling and heating modes via a four-way valve during operation, and also features a vapor injection enthalpy-increasing function. Coaxial heat exchangers are generally only used during high-load cooling to reduce the refrigerant temperature before it enters the radiator, thereby improving 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 open.

[0084] The high-temperature, high-pressure gaseous refrigerant discharged from the compressor enters the outdoor heat exchanger through a four-way valve for condensation and cooling. The subcooled gaseous refrigerant then enters the radiator through a solenoid valve to cool the electronically controlled drive module. The refrigerant then splits into two paths: the main refrigerant directly enters the economizer, while the auxiliary refrigerant, after being throttled by the second electronic expansion valve, becomes low-temperature refrigerant and enters the economizer. The main and auxiliary refrigerants exchange heat in the economizer. The main refrigerant is cooled, increasing its subcooling and lowering its enthalpy value, but increasing the enthalpy difference, thus increasing the cooling capacity. The auxiliary refrigerant is heated and becomes gaseous, returning to the compressor's intermediate-pressure chamber.

[0085] However, at high ambient temperatures, the refrigerant temperature exiting the outdoor heat exchanger remains high. At this point, the radiator's heat dissipation efficiency is low, and the temperature of the electronic control drive module is very high, easily triggering the compressor's frequency limiting protection and causing a decrease in system cooling capacity. In this situation, the solenoid valve closes, and the first electronic expansion valve fully opens. The refrigerant from the outdoor heat exchanger first enters the coaxial heat exchanger and exchanges heat with the low-temperature refrigerant before entering the gas-liquid separator. After its temperature decreases, it enters the radiator, effectively reducing the temperature of the control drive module, fully utilizing the compressor's performance, and ensuring the system's cooling capacity.

[0086] However, if the refrigerant temperature is lower than the ambient dew point temperature, condensation will occur on the radiator or the electronic control drive module, causing electrical safety hazards. In this case, it is necessary to determine the operating mode of each component of the system based on the temperature values ​​of each thermocouple to achieve both safety and minimal impact on the cooling capacity.

[0087] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any person skilled in the art can easily conceive of various variations or substitutions within the technical scope disclosed in this application, and these should all be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A method for preventing condensation control, characterized in that, Includes the following steps: Real-time monitoring of the temperature Td of the electronic control drive module; The corresponding control mode is entered based on the temperature Td of the electronically controlled drive module; wherein, the control mode includes at least electronically controlled temperature control, normal cooling mode, and ambient temperature detection; The electronically controlled temperature control includes a first electronically controlled temperature control, which includes: Open the first electronic expansion valve, close the solenoid valve, change the refrigerant flow direction so that the refrigerant first passes through the coaxial heat exchanger to cool down before entering the radiator to cool the electronically controlled drive module, and perform condensation risk detection; perform anti-condensation protection based on the condensation risk detection results; The ambient temperature detection includes: The system detects whether the ambient temperature Ta is greater than the first preset temperature t1. If it is, the first electronic temperature control is performed; otherwise, the system enters the cooling capacity detection phase. The cooling capacity detection includes: The system checks whether the current cooling capacity Qc is greater than the energy demand q. If it is, the compressor frequency is reduced and compressor frequency detection is initiated; otherwise, the system enters the first electronic temperature control phase.

2. The anti-condensation control method according to claim 1, characterized in that, The step of entering the corresponding control mode based on the temperature Td of the electronically controlled drive module includes: Real-time monitoring of whether the temperature Td of the electronic control drive module is greater than the first threshold td1; If the temperature Td of the electronically controlled drive module is greater than the first threshold td1, then it is detected whether the temperature Td of the electronically controlled drive module is greater than the second threshold td2. If the temperature Td of the electronically controlled drive module is greater than the second threshold td2, then the current operating frequency of the compressor is taken as the highest frequency, and electronic temperature control is performed. If the temperature Td of the electronically controlled drive module is less than or equal to the first threshold td1, it enters the normal cooling mode and the cooling restriction is lifted. If the temperature Td of the electronically controlled drive module is less than or equal to the second threshold td2, then the ambient temperature detection is initiated.

3. The anti-condensation control method according to claim 2, characterized in that, The electronically controlled temperature control includes a second electronically controlled temperature control that is performed simultaneously with the first electronically controlled temperature control. The second electronically controlled temperature control includes: The system detects whether the temperature Td of the electronic control drive module is greater than the third threshold td3. If the temperature Td of the electronic control drive module is greater than the third threshold td3, the compressor protection is activated; otherwise, the system continues to detect whether the temperature Td of the electronic control drive module is greater than the third threshold td3.

4. The anti-condensation control method according to claim 1, characterized in that, The condensation risk detection includes: If the difference between the refrigerant temperature Tc and the ambient temperature Ta is less than the first preset temperature difference tc1, then check if the duration for which the difference between the refrigerant temperature Tc and the ambient temperature Ta is less than the first preset temperature difference tc1 reaches the second preset duration m2. If so, then 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 if the duration for which the difference between the refrigerant temperature Tc and the ambient temperature Ta is less than the first preset temperature difference tc1 does not reach the second preset duration m2, then the temperature Td of the electronic control drive module will continue to be monitored in real time to see if it is greater than the first threshold td1.

5. The anti-condensation control method according to claim 3, characterized in that, The compressor protection includes: If the duration for which the temperature Td of the electronically controlled drive module is greater than the third threshold td3 reaches the first preset duration m1, the compressor is controlled to shut down for protection; otherwise, the compressor frequency is detected.

6. The anti-condensation control method according to claim 1, characterized in that, The compressor frequency detection includes: The compressor frequency is checked to see if it is greater than the minimum allowable value. If it is, the compressor frequency is reduced by n; otherwise, the compressor is shut down for protection.

7. The anti-condensation control method according to claim 4, characterized in that, The anti-condensation protection includes: Open the solenoid valve to split 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. If the difference between the refrigerant temperature Tc and the ambient temperature Ta is greater than the third preset temperature difference tc3, then continue to check if 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 check if the difference between the refrigerant temperature Tc and the ambient temperature Ta is greater than the third preset temperature difference tc3. If the duration for which 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 duration m4, then close the second electronic expansion valve and reduce the outdoor fan speed P. If the duration for which 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 duration m3, the anti-condensation protection is exited and the temperature Td of the electronic control drive module is monitored in real time to see if it is greater than the first threshold td1; otherwise, the temperature difference between the refrigerant temperature Tc and the ambient temperature Ta is monitored to see if it is greater than the third preset temperature difference tc3.

8. A system employing the anti-condensation control method as described in any one of claims 1-7, characterized in that, include: The detection module is used to detect the temperature Td of the electronic control drive module in real time. 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 includes at least electronically controlled temperature control, normal cooling mode, and ambient temperature detection; The electronically controlled temperature control includes a first electronically controlled temperature control, which includes: Open the first electronic expansion valve, close the solenoid valve, change the refrigerant flow direction so that the refrigerant first passes through the coaxial heat exchanger to cool down before entering the radiator to cool the electronically controlled drive module, and perform condensation risk detection; perform anti-condensation protection based on the condensation risk detection results; The ambient temperature detection includes: The system detects whether the ambient temperature Ta is greater than the first preset temperature t1. If it is, the first electronic temperature control is performed; otherwise, the system enters the cooling capacity detection phase. The cooling capacity detection includes: The system checks whether the current cooling capacity Qc is greater than the energy demand q. If it is, the compressor frequency is reduced and compressor frequency detection is initiated; otherwise, the system enters the first electronic temperature control phase.

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