Vehicle and air conditioning dehumidification control method and device thereof, storage medium

Abstract

The application discloses a vehicle and an air conditioner dehumidification control method and device thereof and a storage medium, and the method comprises the following steps: acquiring the dew point temperature in the vehicle and the ambient temperature outside the vehicle; when the temperature difference between the dew point temperature in the vehicle and the ambient temperature outside the vehicle is greater than a first preset temperature threshold, the working time of the windshield wiper of the vehicle is greater than or equal to a first preset time, and a defogging control signal is detected within a second preset time, the air conditioner is controlled to run in a dehumidification mode according to a preset output capacity. The method can control the air conditioner of the vehicle to enter the dehumidification mode, so that the vehicle interior is kept dry and comfortable for a long time in a humid season, the risk of fogging of the vehicle window glass is reduced, the impact on parts when the defogging mode is frequently started is avoided, the health of the people in the vehicle is ensured, and the service life of the vehicle interior is ensured.

Description

Technical Field

[0001] This invention relates to the field of vehicle technology, and in particular to a vehicle air conditioning dehumidification control method, a vehicle air conditioning dehumidification control device, a computer-readable storage medium, and a vehicle. Background Technology

[0002] During the rainy season, after a vehicle has been driven for a period of time, the temperature and humidity inside the passenger compartment rise due to the infiltration of humid air from the outside and the respiration and body heat dissipation of the occupants. Meanwhile, the rain washes away the temperature of the car windows, causing them to drop below the dew point temperature of the air inside the car. As a result, water vapor in the air inside the car will condense on the car windows and cause fogging. At this time, it is necessary to turn on the defroster mode in time to dry the water fog on the car windows.

[0003] Current car air conditioning systems lack a dedicated dehumidification mode; users can only achieve dehumidification by turning on the cooling function. However, most non-professional users are unaware of the principle behind cooling dehumidification. When the humidity inside the car is high, they don't turn on the cooling dehumidification mode in advance, waiting until the windows fog up before switching to defogging mode. At this point, the humidity inside the car hasn't changed, and the windows will quickly fog up again. Frequent use of defogging mode causes the air conditioning compressor and blower to constantly start and stop, impacting air conditioning components and affecting their lifespan. Furthermore, prolonged exposure to high humidity can cause condensation on interior surfaces, leading to mold and corrosion. Excessive humidity can also breed bacteria, threatening the health of the occupants. Summary of the Invention

[0004] This invention aims to at least partially solve one of the technical problems in the related art. Therefore, the first objective of this invention is to provide a vehicle air conditioning dehumidification control method that can control the vehicle air conditioning to enter dehumidification mode, thereby maintaining a dry and comfortable interior for extended periods during humid weather, reducing the risk of fogging of vehicle windows, avoiding the impact on components caused by frequent activation of the defogging mode, and protecting the health of vehicle occupants and the lifespan of the vehicle interior.

[0005] The second objective of this invention is to provide a vehicle air conditioning dehumidification control device.

[0006] A third objective of this invention is to provide a computer-readable storage medium.

[0007] The fourth objective of this invention is to provide a vehicle.

[0008] To achieve the above objectives, a first aspect of the present invention provides a vehicle air conditioning dehumidification control method, comprising: acquiring the vehicle interior dew point temperature and the vehicle exterior ambient temperature; when the temperature difference between the vehicle interior dew point temperature and the vehicle exterior ambient temperature is greater than a first preset temperature threshold, and the vehicle windshield wiper operating time is greater than or equal to a first preset time, if a defogging control signal is detected within a second preset time, then controlling the air conditioning to operate in dehumidification mode according to a preset output capacity.

[0009] According to an embodiment of the present invention, a vehicle air conditioning dehumidification control method, when the temperature difference between the dew point temperature inside the vehicle and the ambient temperature outside the vehicle is greater than a first preset temperature threshold, and the windshield wiper operating time is greater than or equal to a first preset time, and a defogging control signal is detected within a second preset time, controls the air conditioning to operate in a dehumidification mode according to a preset output capacity to dehumidify the vehicle interior environment. Therefore, this method can control the vehicle air conditioning to enter dehumidification mode, thereby maintaining a dry and comfortable interior for extended periods during humid weather, reducing the risk of fogging of the windows, avoiding the impact on components from frequent use of the defogging mode, and protecting the health of vehicle occupants and the lifespan of the vehicle interior.

[0010] In addition, the vehicle air conditioning dehumidification control method according to the above embodiments of the present invention may also have the following additional technical features: According to an embodiment of the present invention, in the process of controlling the air conditioner to operate in dehumidification mode according to a preset output capacity, the method further includes: obtaining the current inlet water temperature of the in-vehicle heat exchanger; obtaining the air outlet humidity and target air outlet humidity in each operating cycle; and adjusting the output capacity of the air conditioner according to the current inlet water temperature of the in-vehicle heat exchanger, the air outlet humidity and target air outlet humidity in each operating cycle.

[0011] According to one embodiment of the present invention, the adjusted output capacity of the air conditioner is determined by the following formula:

[0012] Where Q represents the output capacity of the air conditioner, d3 represents the humidity of the air conditioner outlet, dt represents the target humidity of the air conditioner outlet, Tw represents the inlet water temperature of the air conditioner's in-vehicle heat exchanger, [] represents the floor function, i represents the number of cycles, and n represents the current number of cycles.

[0013] According to one embodiment of the present invention, obtaining the target air outlet moisture content includes: obtaining the current weather conditions; determining a weather coefficient based on the current weather conditions and the current outside ambient temperature; and determining the target air outlet moisture content based on the weather coefficient and the temperature difference between the inside dew point temperature and the outside ambient temperature.

[0014] According to one embodiment of the present invention, the target air outlet moisture content is determined by the following formula:

[0015] Where dt represents the target air outlet moisture content, Td represents the dew point temperature inside the vehicle, T1 represents the ambient temperature outside the vehicle, and a represents the weather coefficient.

[0016] According to an embodiment of the present invention, the above-mentioned air conditioning dehumidification method for a vehicle further includes: when the working time of the windshield wipers is less than a first preset time, if the temperature difference between the dew point temperature inside the vehicle and the ambient temperature outside the vehicle is greater than a second preset temperature threshold, then it is further determined whether a defogging control signal is detected within a second preset time, wherein the second preset temperature threshold is greater than the first preset temperature threshold.

[0017] According to one embodiment of the present invention, when controlling the air conditioner to operate in dehumidification mode according to a preset output capacity, the method further includes: controlling the air conditioner fan to operate at a preset low speed, and controlling the air conditioner to operate in external circulation mode.

[0018] According to an embodiment of the present invention, the above-mentioned vehicle air conditioning dehumidification method further includes: when the relative humidity inside the vehicle is detected to be less than a preset humidity threshold, and the temperature difference between the outside ambient temperature and the inside dew point temperature is greater than a third preset temperature threshold and continues for a third preset time, controlling the air conditioning to exit the dehumidification mode.

[0019] To achieve the above objectives, a second aspect of the present invention provides a vehicle air conditioning dehumidification control device, comprising: an acquisition module for acquiring the in-vehicle dew point temperature and the outside ambient temperature; and a control module for controlling the air conditioning to operate in dehumidification mode according to a preset output capacity when the temperature difference between the in-vehicle dew point temperature and the outside ambient temperature is greater than a first preset temperature threshold and the vehicle's windshield wiper operating time is greater than or equal to a first preset time, and a defogging control signal is detected within a second preset time.

[0020] According to an embodiment of the present invention, a vehicle air conditioning dehumidification control device acquires the in-vehicle dew point temperature and the outside ambient temperature. When the temperature difference between the in-vehicle dew point temperature and the outside ambient temperature exceeds a first preset temperature threshold, and the vehicle's windshield wipers operate for a time greater than or equal to a first preset time, if a defogging control signal is detected within a second preset time, the control module controls the air conditioning to operate in dehumidification mode according to a preset output capacity. Therefore, this device can control the vehicle air conditioning to enter dehumidification mode, thereby maintaining a dry and comfortable interior for extended periods during humid weather, reducing the risk of fogging of the windows, avoiding the impact on components from frequent defogging, and protecting the health of occupants and the lifespan of the vehicle's interior.

[0021] To achieve the above objectives, a third aspect of the present invention provides a computer-readable storage medium storing a vehicle air conditioning dehumidification control program thereon, which, when executed by a processor, implements the above-described vehicle air conditioning dehumidification control method.

[0022] According to the computer-readable storage medium of the present invention, by executing the above-described vehicle air conditioning dehumidification control method, the vehicle air conditioning can be controlled to enter the dehumidification mode, thereby keeping the vehicle interior dry and comfortable for a long time in humid weather, reducing the risk of fogging of the car windows, avoiding the impact on components when frequently turning on the defogging mode, and protecting the health of the occupants and the service life of the vehicle interior.

[0023] To achieve the above objectives, a fourth aspect of the present invention provides a vehicle, including a memory, a processor, and a vehicle air conditioning dehumidification control program stored in the memory and executable on the processor. When the processor executes the vehicle air conditioning dehumidification control program, it implements the above-described vehicle air conditioning dehumidification control method.

[0024] According to the vehicle of the present invention, by executing the above-described vehicle air conditioning dehumidification control method, the vehicle air conditioning can be controlled to enter the dehumidification mode, thereby keeping the vehicle interior dry and comfortable for a long time in humid weather, reducing the risk of fogging of the windows, avoiding the impact on components when the defogging mode is frequently turned on, and protecting the health of the occupants and the service life of the vehicle interior.

[0025] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0026] Figure 1 This is a flowchart of a vehicle air conditioning dehumidification control method according to an embodiment of the present invention; Figure 2 This is a block diagram of a vehicle air conditioning dehumidification control device according to an embodiment of the present invention; Figure 3 This is a block diagram of a vehicle according to an embodiment of the present invention. Detailed Implementation

[0027] Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0028] The following description, with reference to the accompanying drawings, outlines an embodiment of the present invention of a vehicle air conditioning dehumidification control method, a vehicle air conditioning dehumidification control device, a computer-readable storage medium, and a vehicle.

[0029] Figure 1 This is a flowchart of a vehicle air conditioning dehumidification control method according to an embodiment of the present invention.

[0030] In some embodiments of the present invention, the vehicle's air conditioning system is a secondary water circuit system. The refrigerant modules are all located on the engine compartment side. Water is used to transfer the refrigerant's cooling and heating properties into the passenger compartment. An air conditioning unit is installed in the passenger compartment to regulate the temperature and humidity of the air. It includes a fan, an in-vehicle heat exchanger, and a heat pipe heat exchanger. During dehumidification, cold water enters the in-vehicle heat exchanger to dehumidify the air. The heat pipe heat exchanger heats the dehumidified and cooled air to reduce relative humidity and maintain a constant temperature in the engine compartment. The refrigerant module includes a variable frequency compressor, which can adjust the system's cooling and heating capacity. The front-end module includes a condenser and a heat pipe heat exchanger. The condenser is used for heat exchange between the refrigerant and the air, and the heat pipe heat exchanger recovers heat from the condenser and transfers it to the passenger compartment side. The front-end module is equipped with temperature and humidity sensors to monitor the temperature and humidity of the outside air. Temperature and humidity sensors are installed at the air conditioning unit's return air vent and air outlet to monitor the temperature and humidity of the air inside the vehicle and the air conditioning outlet, respectively. The inlet of the air conditioning unit's heat exchanger is equipped with a temperature sensor to monitor the water temperature.

[0031] like Figure 1 As shown, the vehicle air conditioning dehumidification control method of this embodiment of the invention may include the following steps: S1, obtains the dew point temperature inside the vehicle and the ambient temperature outside the vehicle.

[0032] Specifically, the outside ambient temperature T1 and relative humidity Φ1 can be obtained in real time through a temperature and humidity sensor installed at the front of the vehicle, while the inside ambient temperature T2 and relative humidity Φ2 can be obtained in real time through a temperature and humidity sensor installed at the air return vent of the air conditioning unit. The dew point temperature Td inside the vehicle can be calculated by looking up a table based on the inside ambient temperature T2 and relative humidity Φ2. It should be noted that the dew point temperature refers to the temperature at which air reaches saturation when cooled, without changes in water vapor content or air pressure. In simpler terms, it is the temperature at which water vapor in the air turns into dew.

[0033] S2, when the temperature difference between the dew point temperature inside the vehicle and the ambient temperature outside the vehicle is greater than the first preset temperature threshold, and the windshield wipers have been operating for a time greater than or equal to the first preset time, if a defogging control signal is detected within a second preset time, the air conditioner is controlled to operate in dehumidification mode according to the preset output capacity. The first and second preset times can be calibrated according to actual conditions; for example, the first preset time can be 60 seconds and the second preset time can be 10 minutes. The first preset temperature threshold is a default value, set by the manufacturer at the vehicle's factory, and is typically -2°C. The preset output capacity is lower than the air conditioner's rated output capacity; for example, it can be 10% of the air conditioner's rated output capacity.

[0034] According to one embodiment of the present invention, when controlling the air conditioner to operate in dehumidification mode according to a preset output capacity, the method further includes: controlling the air conditioner's fan to operate at a preset low speed, and controlling the air conditioner to operate in external circulation mode. The preset low speed can be the lowest speed setting of the fan, thereby ensuring that passengers do not feel any airflow during the air conditioner's dehumidification process, thus improving the passenger's riding experience.

[0035] Specifically, when a vehicle is driven in the rain, the rainwater washes away the windshield, causing the temperature to drop below the dew point temperature of the air inside the vehicle. After obtaining the dew point temperature inside the vehicle and the ambient temperature outside the vehicle through step S1, the difference between the two temperatures is calculated. When the difference exceeds a first preset temperature threshold (-2℃), water vapor in the air inside the vehicle will condense and fog up the windshield. At this time, the windshield wipers will remain on for longer than a first preset time (60 seconds). If a defogging control signal is detected within a second preset time (10 minutes), the air conditioning will be switched to cooling mode. The inverter compressor of the air conditioning will operate according to a preset output capacity, and the air conditioner fan will be controlled to run at a preset low setting to exchange air between the outside and inside the vehicle, thereby dehumidifying the air inside the vehicle.

[0036] For example, when a vehicle is driving in the rain, the temperature and humidity sensor at the front of the vehicle obtains the outside ambient temperature T1=18℃ and the relative humidity Φ1=98%. The temperature and humidity sensor at the air conditioner's return vent obtains the inside ambient temperature T2=22℃ and the relative humidity Φ2=80%. By referring to a table, the dew point temperature inside the vehicle is calculated to be Td=18.3℃. At this time, the temperature difference between the inside dew point temperature Td and the outside ambient temperature T1 is Td-T1=0.3℃>-2℃ (first preset temperature threshold). The windshield wipers are working. Within 10 minutes (second preset time), a defogging control signal is detected, the air conditioner dehumidification mode is activated, the air conditioner operates at 10% of its rated output capacity, and the air conditioner fan is controlled to operate at the lowest setting to control the exchange of outside air and inside air, thereby dehumidifying the air inside the vehicle.

[0037] According to an embodiment of the present invention, the above-described vehicle air conditioning dehumidification control method further includes: when the windshield wiper operating time is less than a first preset time, if the temperature difference between the dew point temperature inside the vehicle and the ambient temperature outside the vehicle is greater than a second preset temperature threshold, then further determining whether a defogging control signal is detected within a second preset time, wherein the second preset temperature threshold is greater than the first preset temperature threshold. The second preset temperature threshold is a default value, set by the manufacturer at the time the vehicle leaves the factory, and is generally 0°C.

[0038] Specifically, even when the vehicle is in motion and the weather is not raining, and the windshield wipers are not turned on, dehumidification is still necessary if the humidity inside the vehicle is too high. Specifically, if the temperature difference between the interior dew point temperature and the exterior ambient temperature exceeds a first preset temperature threshold, but the windshield wipers operate for less than a first preset time, it is necessary to further determine if the temperature difference between the interior dew point temperature and the exterior ambient temperature exceeds a second preset temperature threshold. If the temperature difference exceeds the second preset temperature threshold, it is further determined whether a defogging control signal is detected within a second preset time. If a defogging control signal is detected within the second preset time, the air conditioning is controlled to enter dehumidification mode and operate according to a preset output capacity to dehumidify the air inside the vehicle.

[0039] According to an embodiment of the present invention, in the process of controlling the air conditioner to operate in dehumidification mode according to a preset output capacity, the method further includes: obtaining the current inlet water temperature of the in-vehicle heat exchanger; obtaining the air outlet humidity and target air outlet humidity in each operating cycle; and adjusting the output capacity of the air conditioner according to the current inlet water temperature of the in-vehicle heat exchanger, the air outlet humidity and target air outlet humidity in each operating cycle.

[0040] According to one embodiment of the present invention, the adjusted output capacity of the air conditioner is determined by the following formula: (1) Where Q represents the output capacity of the air conditioner, d3 represents the humidity of the air conditioner outlet, dt represents the target humidity of the air conditioner outlet, Tw represents the inlet water temperature of the air conditioner's in-vehicle heat exchanger, [] represents the floor function, i represents the number of cycles, and n represents the current number of cycles.

[0041] According to one embodiment of the present invention, obtaining the target air outlet moisture content includes: obtaining the current weather conditions; determining a weather coefficient based on the current weather conditions and the current outside ambient temperature; and determining the target air outlet moisture content based on the weather coefficient and the temperature difference between the inside dew point temperature and the outside ambient temperature.

[0042] Furthermore, according to one embodiment of the present invention, the target moisture content at the air outlet is determined by the following formula: (2) Where dt represents the target air outlet moisture content, Td represents the dew point temperature inside the vehicle, T1 represents the ambient temperature outside the vehicle, and a represents the weather coefficient.

[0043] Specifically, after the air conditioner runs in dehumidification mode according to the preset output capacity, the temperature and relative humidity inside the car change. In order to improve the dehumidification efficiency, the output capacity of the air conditioner can be adjusted after one cycle (such as 30 seconds) of running the dehumidification mode.

[0044] Specifically, the current inlet water temperature Tw of the vehicle's inlet heat exchanger is obtained through a temperature sensor at the inlet end of the heat exchanger, while the air outlet temperature T3 and relative humidity Φ3 are obtained through a temperature and humidity sensor at the air outlet. By looking up the air outlet temperature T3 and relative humidity Φ3 in a table, the humidity d3 at the air outlet can be obtained.

[0045] Furthermore, the values ​​of the weather coefficient 'a' are shown in Table 1.

[0046] Table 1

[0047] The value of the weather coefficient a can be determined based on the outside temperature T1 and the current weather conditions. Substituting the weather coefficient a, the inside dew point temperature Td, and the outside ambient temperature T1 into formula (2), the target air outlet moisture content dt can be calculated. Substituting the inlet water temperature Tw of the air conditioner's in-vehicle heat exchanger, the air outlet moisture content d3, and the target air outlet moisture content dt into formula (1), the adjusted air conditioner output capacity can be obtained. During this cycle, the air conditioner is controlled to dehumidify according to the adjusted air conditioner output capacity.

[0048] For example, when a vehicle is driving in the rain, the temperature and humidity sensor at the front of the vehicle obtains the outside ambient temperature T1=18℃ and the relative humidity outside the vehicle Φ1=98%. The temperature and humidity sensor at the air conditioner's return air vent obtains the inside ambient temperature T2=22℃ and the relative humidity inside the vehicle Φ2=80%. By looking up the table, the dew point temperature inside the vehicle is calculated to be Td=18.3℃. At this time, the temperature difference between the inside dew point temperature Td and the outside ambient temperature T1 is Td-T1=0.3℃>-2℃ (first preset temperature threshold). The windshield wipers are working. Within 10 minutes (second preset time), a defogging control signal is detected, the air conditioner dehumidification mode is turned on, and the air conditioner operates at 10% of its rated output capacity.

[0049] After the air conditioner operates at 10% of its rated output capacity for 30 seconds (first cycle), the outside temperature T1 = 18℃, the inside temperature T2 = 21℃, the inside relative humidity Φ2 = 75%, the air conditioner outlet temperature T3 = 18℃, the outlet relative humidity Φ3 = 80%, and the inlet water temperature of the heat exchanger Tw = 7℃ are measured. By referring to the table, the moisture content at the air conditioner outlet is calculated to be d3 = 10.4 g / kg, the dew point temperature Td = 16.3℃, the weather coefficient a = 0.3, and Td - T1 = -1.7. Therefore, it is determined that the air conditioner will continue to operate in dehumidification mode. Substituting the weather coefficient a, the inside dew point temperature Td, and the outside ambient temperature T1 into formula (2), the target outlet moisture content dt = 8.5 can be obtained. Substituting the inlet water temperature Tw of the air conditioner's in-vehicle heat exchanger, the humidity d3 of the air conditioner's outlet, and the target humidity dt of the outlet into formula (1), we can calculate Q = 10 + 5 × ln(7 + 1) × (10.4 - 8.5) = 29.76%. Rounding down, we get Q = 29%. Therefore, the air conditioner's output capacity is adjusted from 10% to 29% to operate in dehumidification mode.

[0050] After the air conditioner operated at 29% output capacity for the second cycle, all parameters were checked again. The air conditioner outlet temperature T3 = 18℃, the outlet relative humidity Φ3 = 70%, the outside temperature T1 = 18℃, the inside temperature T2 = 20℃, the inside relative humidity Φ2 = 68%, and the inlet water temperature of the heat exchanger Tw = 5℃. By referring to tables, the moisture content at the air conditioner outlet was calculated to be d3 = 9.04, and the dew point temperature Td = 13.8℃. Further calculation yielded the target outlet moisture content dt = 8 - (13.8 - 18) × 0.3 = 9.26. Rounding down, we get Q=25, so the air conditioner's output capacity is adjusted from 29% to 25% to run in dehumidification mode.

[0051] Therefore, the above-mentioned vehicle air conditioning dehumidification control method, through intelligent algorithms, intelligently adjusts the air conditioning output capacity according to changes in temperature and humidity inside and outside the vehicle and different weather conditions, taking into account both dehumidification effect and energy saving.

[0052] According to an embodiment of the present invention, the above-described vehicle air conditioning dehumidification control method further includes: when the relative humidity inside the vehicle is detected to be less than a preset humidity threshold, and the temperature difference between the outside ambient temperature and the inside dew point temperature is greater than a third preset temperature threshold and remains so for a third preset time, controlling the air conditioning to exit the dehumidification mode. The preset humidity threshold, the third preset temperature threshold, and the third preset time can all be calibrated according to actual conditions; for example, the preset humidity threshold can be 70%, the third preset temperature threshold can be 2°C, and the third preset time can be 60 seconds.

[0053] For example, let's continue with the example above. When the air conditioner's output capacity is adjusted from 29% to 25% and it operates in dehumidification mode, the relative humidity inside the vehicle is Φ2 = 68% < 70% (preset humidity threshold), and the temperature difference between the outside ambient temperature and the inside dew point temperature is T1 - Td = 4.2℃ > 2℃ (third preset temperature threshold). Assuming it operates under these conditions for 60 seconds, the air conditioner will then exit dehumidification mode.

[0054] It should be noted that the air conditioning dehumidification control method in this embodiment of the invention is executed when the vehicle is started and the air conditioner is not running. If the air conditioner receives a start command from another mode during the execution process, the air conditioner will exit the dehumidification mode.

[0055] In summary, the vehicle air conditioning dehumidification control method according to embodiments of the present invention, when the temperature difference between the dew point temperature inside the vehicle and the ambient temperature outside the vehicle is greater than a first preset temperature threshold, and the windshield wiper operating time is greater than or equal to a first preset time, and a defogging control signal is detected within a second preset time, controls the air conditioning to operate in a dehumidification mode according to a preset output capacity to dehumidify the vehicle interior environment. Therefore, this method can control the vehicle air conditioning to enter dehumidification mode, thereby maintaining a dry and comfortable interior for extended periods during humid weather, reducing the risk of fogging of the windows, avoiding the impact on components from frequent use of the defogging mode, and protecting the health of vehicle occupants and the lifespan of the vehicle interior.

[0056] Corresponding to the above embodiments, the present invention also proposes a vehicle air conditioning dehumidification control device.

[0057] Figure 2 This is a block diagram of a vehicle air conditioning dehumidification control device according to an embodiment of the present invention.

[0058] like Figure 2 As shown, the vehicle air conditioning dehumidification control device 100 of this embodiment of the invention may include: an acquisition module 110 and a control module 120.

[0059] The acquisition module 110 is used to acquire the in-vehicle dew point temperature and the outside ambient temperature. The control module 120 is used to control the air conditioner to operate in dehumidification mode according to the preset output capacity when the temperature difference between the in-vehicle dew point temperature and the outside ambient temperature is greater than a first preset temperature threshold and the windshield wiper operation time is greater than or equal to a first preset time.

[0060] According to an embodiment of the present invention, during the process of controlling the air conditioner to operate in dehumidification mode according to a preset output capacity, the control module 120 is further configured to: obtain the current inlet water temperature of the in-vehicle heat exchanger; obtain the air outlet humidity and target air outlet humidity in each operating cycle; and adjust the output capacity of the air conditioner according to the current inlet water temperature of the in-vehicle heat exchanger and the air outlet humidity and target air outlet humidity in each operating cycle.

[0061] According to one embodiment of the present invention, the control module 120 determines the adjusted output capacity of the air conditioner using the following formula:

[0062] Where Q represents the output capacity of the air conditioner, d3 represents the humidity of the air conditioner outlet, dt represents the target humidity of the air conditioner outlet, Tw represents the inlet water temperature of the air conditioner's in-vehicle heat exchanger, [] represents the floor function, i represents the number of cycles, and n represents the current number of cycles.

[0063] According to one embodiment of the present invention, the control module 120 obtains the target air outlet moisture content, specifically for: obtaining the current weather condition; determining a weather coefficient based on the current weather condition and the current outside ambient temperature; and determining the target air outlet moisture content based on the weather coefficient and the temperature difference between the inside dew point temperature and the outside ambient temperature.

[0064] According to one embodiment of the present invention, the control module 120 determines the target air outlet moisture content using the following formula:

[0065] Where dt represents the target air outlet moisture content, Td represents the dew point temperature inside the vehicle, T1 represents the ambient temperature outside the vehicle, and a represents the weather coefficient.

[0066] According to an embodiment of the present invention, the control module 120 is further configured to, when the working time of the windshield wiper is less than a first preset time, if the temperature difference between the dew point temperature inside the vehicle and the ambient temperature outside the vehicle is greater than a second preset temperature threshold, further determine whether a defogging control signal is detected within a second preset time, wherein the second preset temperature threshold is greater than the first preset temperature threshold.

[0067] According to one embodiment of the present invention, when controlling the air conditioner to operate in dehumidification mode according to a preset output capacity, the control module 120 is further configured to control the air conditioner fan to operate at a preset low speed and control the air conditioner to operate in external circulation mode.

[0068] According to one embodiment of the present invention, the control module 120 is further configured to control the air conditioner to exit the dehumidification mode when it detects that the relative humidity inside the vehicle is less than a preset humidity threshold and the temperature difference between the ambient temperature outside the vehicle and the dew point temperature inside the vehicle is greater than a third preset temperature threshold and continues for a third preset time.

[0069] It should be noted that for details not disclosed in the vehicle air conditioning dehumidification control device of the present invention embodiments, please refer to the details disclosed in the vehicle air conditioning dehumidification control method of the above embodiments, which will not be repeated here.

[0070] According to an embodiment of the present invention, a vehicle air conditioning dehumidification control device acquires the in-vehicle dew point temperature and the outside ambient temperature. When the temperature difference between the in-vehicle dew point temperature and the outside ambient temperature exceeds a first preset temperature threshold, and the vehicle's windshield wipers operate for a time greater than or equal to a first preset time, if a defogging control signal is detected within a second preset time, the control module controls the air conditioning to operate in dehumidification mode according to a preset output capacity. Therefore, this device can control the vehicle air conditioning to enter dehumidification mode, thereby maintaining a dry and comfortable interior for extended periods during humid weather, reducing the risk of fogging of the windows, avoiding the impact on components from frequent defogging, and protecting the health of occupants and the lifespan of the vehicle's interior.

[0071] Corresponding to the above embodiments, the present invention also proposes a computer-readable storage medium.

[0072] The computer-readable storage medium of this invention stores a vehicle air conditioning dehumidification control program thereon, which, when executed by a processor, implements the above-described vehicle air conditioning dehumidification control method.

[0073] According to the computer-readable storage medium of the present invention, by executing the above-described vehicle air conditioning dehumidification control method, the vehicle air conditioning can be controlled to enter the dehumidification mode, thereby keeping the vehicle interior dry and comfortable for a long time in humid weather, reducing the risk of fogging of the car windows, avoiding the impact on components when frequently turning on the defogging mode, and protecting the health of the occupants and the service life of the vehicle interior.

[0074] Corresponding to the above embodiments, the present invention also proposes a vehicle.

[0075] Figure 3 This is a block diagram of a vehicle according to an embodiment of the present invention.

[0076] like Figure 3 As shown, the vehicle 200 of this embodiment includes a memory 210, a processor 220, and a vehicle air conditioning dehumidification control program stored in the memory 210 and executable on the processor 220. When the processor 220 executes the vehicle air conditioning dehumidification control program, it implements the above-mentioned vehicle air conditioning dehumidification control method.

[0077] According to the vehicle of the present invention, by executing the above-described vehicle air conditioning dehumidification control method, the vehicle air conditioning can be controlled to enter the dehumidification mode, thereby keeping the vehicle interior dry and comfortable for a long time in humid weather, reducing the risk of fogging of the windows, avoiding the impact on components when the defogging mode is frequently turned on, and protecting the health of the occupants and the service life of the vehicle interior.

[0078] It should be noted that the logic and / or steps represented in the flowchart or otherwise described herein, for example, can be considered as a sequenced list of executable instructions for implementing logical functions, and can be specifically implemented in any computer-readable medium for use by, or in conjunction with, an instruction execution system, apparatus, or device (such as a computer-based system, a processor-included system, or other system that can fetch and execute instructions from, an instruction execution system, apparatus, or device). For the purposes of this specification, "computer-readable medium" can be any means that can contain, store, communicate, propagate, or transmit programs for use by, or in conjunction with, an instruction execution system, apparatus, or device. More specific examples (a non-exhaustive list) of computer-readable media include: an electrical connection having one or more wires (electronic device), a portable computer disk drive (magnetic device), random access memory (RAM), read-only memory (ROM), erasable and editable read-only memory (EPROM or flash memory), fiber optic devices, and portable optical disc read-only memory (CDROM). Alternatively, the computer-readable medium may be paper or other suitable media on which the program can be printed, since the program can be obtained electronically, for example, by optically scanning the paper or other medium, followed by editing, interpreting, or otherwise processing as necessary, and then stored in a computer memory.

[0079] It should be understood that various parts of the present invention can be implemented in hardware, software, firmware, or a combination thereof. In the above embodiments, multiple steps or methods can be implemented in software or firmware stored in memory and executed by a suitable instruction execution system. For example, if implemented in hardware, as in another embodiment, it can be implemented using any one or a combination of the following techniques known in the art: discrete logic circuits having logic gates for implementing logical functions on data signals, application-specific integrated circuits (ASICs) having suitable combinational logic gates, programmable gate arrays (PGAs), field-programmable gate arrays (FPGAs), etc.

[0080] In the description of this specification, references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0081] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0082] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0083] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A method for controlling the dehumidification of a vehicle's air conditioning system, characterized in that, include: Obtain the dew point temperature inside the vehicle and the ambient temperature outside the vehicle; If the temperature difference between the dew point temperature inside the vehicle and the ambient temperature outside the vehicle is greater than a first preset temperature threshold, and the working time of the vehicle's windshield wipers is greater than or equal to a first preset time, and a defogging control signal is detected within a second preset time, then the air conditioner is controlled to operate in dehumidification mode according to a preset output capacity. In the process of controlling the air conditioner to operate in dehumidification mode according to a preset output capacity, the method further includes: Get the current inlet water temperature of the vehicle's heat exchanger; Obtain the humidity content at the air outlet and the target humidity content at the air outlet of the air conditioner during each operating cycle; The output capacity of the air conditioner is adjusted based on the current inlet water temperature of the in-vehicle heat exchanger, the moisture content of the air outlet in each operating cycle, and the target moisture content of the air outlet. The adjusted output capacity of the air conditioner is determined using the following formula: Where Q represents the output capacity of the air conditioner, d3 represents the humidity of the air outlet of the air conditioner, dt represents the target humidity of the air outlet, Tw represents the inlet water temperature of the in-vehicle heat exchanger of the air conditioner, [] represents the floor function, i represents the number of cycles, and n represents the current number of cycles.

2. The method according to claim 1, characterized in that, Obtaining the moisture content of the target air outlet includes: Get the current weather status; The weather coefficient is determined based on the current weather conditions and the current outside temperature of the vehicle. The target air outlet moisture content is determined based on the weather coefficient and the temperature difference between the vehicle interior dew point temperature and the vehicle exterior ambient temperature.

3. The method according to claim 2, characterized in that, The target air outlet moisture content is determined using the following formula: Wherein, dt represents the moisture content of the target air outlet, Td represents the dew point temperature inside the vehicle, T1 represents the ambient temperature outside the vehicle, and a represents the weather coefficient.

4. The method according to claim 1, characterized in that, Also includes: When the windshield wiper operating time is less than the first preset time, if the temperature difference between the dew point temperature inside the vehicle and the ambient temperature outside the vehicle is greater than the second preset temperature threshold, then it is further determined whether the defogging control signal is detected within the second preset time, wherein the second preset temperature threshold is greater than the first preset temperature threshold.

5. The method according to claim 1, characterized in that, When controlling the air conditioner to operate in dehumidification mode according to a preset output capacity, the method further includes: Control the air conditioner's fan to operate at a preset low speed, and control the air conditioner to operate in external circulation mode.

6. The method according to any one of claims 1-5, characterized in that, Also includes: When the relative humidity inside the vehicle is detected to be less than a preset humidity threshold, and the temperature difference between the outside ambient temperature and the inside dew point temperature is greater than a third preset temperature threshold and continues for a third preset time, the air conditioner is controlled to exit the dehumidification mode.

7. A vehicle air conditioning dehumidification control device, used to implement the method as described in any one of claims 1-6, characterized in that, include: The acquisition module is used to acquire the dew point temperature inside the vehicle and the ambient temperature outside the vehicle. The control module is used to control the air conditioner to operate in dehumidification mode according to preset output capacity when the temperature difference between the dew point temperature inside the vehicle and the ambient temperature outside the vehicle is greater than a first preset temperature threshold and the working time of the vehicle's windshield wipers is greater than or equal to a first preset time. The process of controlling the air conditioner to operate in dehumidification mode according to the preset output capacity also includes: Get the current inlet water temperature of the vehicle's heat exchanger; Obtain the humidity content at the air outlet and the target humidity content at the air outlet of the air conditioner during each operating cycle; The output capacity of the air conditioner is adjusted based on the current inlet water temperature of the in-vehicle heat exchanger, the humidity of the air outlet during each operating cycle, and the target humidity of the air outlet.

8. A computer-readable storage medium, characterized in that, It stores a vehicle air conditioning dehumidification control program, which, when executed by a processor, implements the vehicle air conditioning dehumidification control method according to any one of claims 1-6.

9. A vehicle, characterized in that, The system includes a memory, a processor, and a vehicle air conditioning dehumidification control program stored in the memory and executable on the processor. When the processor executes the vehicle air conditioning dehumidification control program, it implements the vehicle air conditioning dehumidification control method according to any one of claims 1-6.

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