Method and device for controlling energy-saving mode of vehicle air conditioner

Abstract

Embodiments of the present application provide a method and device for controlling an energy-saving mode of a vehicle air conditioner. The method comprises: when an air conditioner is in an energy-saving mode, acquiring an ambient temperature; when a season corresponding to a temperature interval where the ambient temperature is located is spring or autumn, determining whether a fogging probability of a vehicle window is greater than a preset probability and whether an air blowing mode comprises a window defogging mode; and if the fogging probability is smaller than the preset probability and the air blowing mode does not comprise the window defogging mode, controlling the air conditioner to enter a ventilation mode. The method is used for achieving the effect of reducing the energy consumption of the whole vehicle in spring or autumn.

Description

Vehicle air conditioning energy-saving mode control method and equipment

[0001] This application claims priority to Chinese Patent Application No. 202411051849.1, filed on August 1, 2024, entitled “Vehicle Air Conditioning Energy-Saving Mode Control Method and Device”, the entire contents of which are incorporated herein by reference. Technical Field

[0002] This application relates to the field of vehicles, and more particularly to a method and device for controlling the energy-saving mode of vehicle air conditioning. Background Technology

[0003] With increasing global awareness of environmental protection and the transformation of energy structures, new energy electric vehicles, as representatives of green travel, have seen their market penetration rate continue to rise. Among the many systems in new energy electric vehicles, the air conditioning system, as a crucial component for improving driving comfort, directly impacts the vehicle's range and user experience through its performance and energy consumption. Especially under the two core operating conditions of heating and cooling, the air conditioning system relies on high-voltage battery packs for energy. Therefore, how to effectively reduce the energy consumption of the air conditioning system while ensuring passenger comfort has become one of the key issues in the development of new energy vehicle technology.

[0004] Currently, to achieve energy-saving goals for air conditioning systems, the industry generally adopts intelligent energy-saving mode (ECO mode). Its core strategy is to reduce the workload of key components such as the compressor and positive temperature coefficient (PTC) heater by adjusting the target temperature of the air conditioning system. Specifically, when a user sets a target temperature to a comfortable value (e.g., 22℃) and activates ECO mode, in winter heating mode, the system will automatically lower the target temperature appropriately (e.g., to 20℃) to reduce energy consumption; conversely, in summer cooling mode, the system will raise the target temperature appropriately (e.g., to 24℃) to achieve energy-saving effects in a similar way.

[0005] While the above-mentioned energy-saving control methods can reduce energy consumption to some extent, they shift the target temperature of the air conditioning system and do not effectively reduce the overall vehicle energy consumption in some seasons. Summary of the Invention

[0006] This application provides a method and device for controlling the energy-saving mode of vehicle air conditioning, in order to solve the problem that the energy consumption of the whole vehicle cannot be effectively reduced in some seasons in the prior art.

[0007] Firstly, this application provides a method for controlling a vehicle air conditioning energy-saving mode, including:

[0008] When the air conditioner is in energy-saving mode, it obtains the ambient temperature.

[0009] When the ambient temperature range corresponds to spring or autumn, determine whether the probability of the car window fogging is higher than the preset probability and whether the air blowing mode includes the window blowing mode.

[0010] If the probability of fogging is less than the preset probability and the air blowing mode does not include the window blowing mode, control the air conditioner to enter the ventilation mode.

[0011] In some embodiments, controlling the air conditioner to enter ventilation mode includes:

[0012] Control the compressor to stop working;

[0013] And / or, control the high-pressure heater to stop working.

[0014] In some embodiments, if only the compressor is controlled to stop working, after controlling the compressor to stop working, the method further includes:

[0015] Obtain the target temperature and actual temperature of each temperature zone head;

[0016] Based on the target temperature and the actual temperature, determine whether the control error of each temperature zone head is less than the preset temperature difference;

[0017] When the control error of each temperature zone head is less than the preset temperature difference, the high-pressure heater is controlled to stop working.

[0018] In some embodiments, it also includes:

[0019] When the control error of at least one temperature zone head is greater than or equal to the preset temperature difference, the air conditioner is controlled to enter the heating mode.

[0020] In some embodiments, it also includes:

[0021] If the probability of fogging is greater than or equal to the preset probability, or if the blowing mode includes the window blowing mode, control the air conditioner to enter the dehumidification mode.

[0022] In some embodiments, after controlling the air conditioner to enter dehumidification mode, the method further includes:

[0023] When the target temperature at the head of at least one temperature zone is greater than the actual temperature of the corresponding temperature zone, the air conditioner is controlled to enter heating mode.

[0024] In some embodiments, after controlling the air conditioner to enter heating mode, the method further includes:

[0025] When the actual temperature at the head of at least one temperature zone is greater than the first preset temperature, the operating power of the high-pressure heater is controlled to be less than the preset power.

[0026] In some embodiments, it also includes:

[0027] When the ambient temperature range corresponds to winter or summer, the air outlet temperature of the air conditioner is determined based on the target temperature and actual temperature at the head of each temperature zone, the target air volume level, the ambient temperature, and the sunlight intensity. The air outlet temperature is negatively correlated with the ambient temperature.

[0028] The air conditioning energy-saving mode is controlled according to the control strategy corresponding to the temperature range and the outlet air temperature.

[0029] In some embodiments, the air conditioning energy-saving mode control is performed based on the control strategy corresponding to the temperature range and the outlet air temperature, including:

[0030] When the ambient temperature range corresponds to winter, the water temperature of the high-pressure heater should be controlled to be less than or equal to the preset water temperature based on the outlet air temperature.

[0031] When the ambient temperature range corresponds to the summer season, the evaporator temperature is controlled to be greater than or equal to the second preset temperature based on the air outlet temperature.

[0032] In some embodiments, it also includes:

[0033] When the air conditioner is in energy-saving mode, it will exit energy-saving mode if any of the following conditions are met:

[0034] Condition 1: Defrosting mode is enabled at maximum settings;

[0035] Condition 2: Activate maximum cooling mode;

[0036] Condition 3: The target temperature for any temperature zone is either the lowest or highest temperature of that zone.

[0037] Condition 4: When the season corresponding to the ambient temperature range is winter, more than a preset number of heating requests are received within a preset time period and the final requested temperature is greater than the third preset temperature.

[0038] Condition 5: When the ambient temperature range corresponds to the summer season, more than a preset number of cooling requests are received within a preset time period, and the final requested temperature is less than the fourth preset temperature.

[0039] Secondly, this application provides a vehicle air conditioning energy-saving mode control device, comprising:

[0040] The acquisition module is used to acquire the ambient temperature when the air conditioner is in energy-saving mode;

[0041] The judgment module is used to determine whether the probability of the car window fogging is higher than the preset probability and whether the blowing mode includes the window blowing mode when the ambient temperature range corresponds to spring and autumn.

[0042] The control module is used to control the air conditioner to enter ventilation mode if the probability of fogging is less than the preset probability and the blowing mode does not include the window blowing mode.

[0043] Thirdly, this application provides a controller, including: a memory and a processor;

[0044] The memory is used to store computer programs; the processor is used to execute the computer programs stored in the memory to implement the vehicle air conditioning energy-saving mode control method in the first aspect and any embodiment of the first aspect.

[0045] Fourthly, this application provides a computer-readable storage medium storing a computer program, which, when executed by a processor, implements the vehicle air conditioning energy-saving mode control method of the first aspect and any embodiment of the first aspect.

[0046] Fifthly, this application provides a computer program product, which includes a computer program that, when executed by a processor, implements the vehicle air conditioning energy-saving mode control method of the first aspect and any embodiment of the first aspect.

[0047] The vehicle air conditioning energy-saving mode control method and device provided in this application include the following steps: When the air conditioning is in energy-saving mode, the ambient temperature is acquired; if the ambient temperature range corresponds to spring or autumn, it is determined whether the probability of window fogging is higher than a preset probability and whether the air blowing mode includes a window blowing mode; if the fogging probability is lower than the preset probability and the air blowing mode does not include a window blowing mode, the air conditioning is controlled to enter ventilation mode. By controlling the air conditioning to enter ventilation mode while ensuring vehicle driving safety, the effect of reducing overall vehicle energy consumption is achieved in spring and autumn. Attached Figure Description

[0048] To more clearly illustrate the technical solutions in 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 some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0049] Figure 1 is a flowchart of a vehicle air conditioning energy-saving mode control method provided in an embodiment of this application;

[0050] Figure 2 is a flowchart of another vehicle air conditioning energy-saving mode control method provided in an embodiment of this application;

[0051] Figure 3 is a schematic diagram of a vehicle air conditioning energy-saving mode control device according to an embodiment of this application;

[0052] Figure 4 is a schematic diagram of the hardware structure of a controller provided in an embodiment of this application. Detailed Implementation

[0053] To make the objectives, technical solutions, and advantages of this application clearer, the technical solutions of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0054] The terms "first," "second," "third," "fourth," etc., used in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be used interchangeably where appropriate. For example, without departing from the scope of this document, first information can also be referred to as second information, and similarly, second information can also be referred to as first information.

[0055] Depending on the context, the word “if” as used here can be interpreted as “when”, “when”, or “in response to determination”.

[0056] It should be further understood that the terms “comprising” or “including” indicate the presence of features, steps, operations, elements, components, items, kinds, and / or groups, but do not exclude the presence, occurrence, or addition of one or more other features, steps, operations, elements, components, items, kinds, and / or groups.

[0057] The terms “or” and “and / or” as used herein are interpreted as inclusive, or mean any one or any combination thereof. Therefore, “A, B, and / or C” means “any one of the following: A; B; C; A and B; A and C; B and C; A, B, and C.” Exceptions to this definition occur only when combinations of elements, functions, steps, or operations are inherently mutually exclusive in some way.

[0058] The air conditioning systems of new energy electric vehicles rely on the energy of the high-voltage battery pack for both heating and cooling. Therefore, the impact of the air conditioning system on the vehicle's range is receiving increasing attention. To reduce energy consumption, current technologies typically employ an ECO (Energy-Saving) mode to reduce the workload of the compressor and PTC (Power Transmission Control Unit) by shifting the target temperature. For example, if a user activates the ECO mode and sets the target temperature to 22°C, the air conditioning control unit will lower the target temperature to 20°C during winter heating and raise it to 24°C during summer cooling.

[0059] The above-mentioned energy-saving control methods can reduce the energy consumption of the vehicle in winter and summer, but in spring and autumn, when there are fewer cooling and heating operations, they cannot achieve the effect of energy saving.

[0060] To address the aforementioned issues, this application proposes a method and device for controlling a vehicle's air conditioning energy-saving mode. This method refines the air conditioning control strategy under different ambient temperatures. When the air conditioning energy-saving mode is activated in spring and autumn, the air conditioning controller determines whether the current mode can ensure driving safety. If driving safety is guaranteed, energy-saving control is implemented to reduce overall vehicle energy consumption.

[0061] The technical solutions of this application will be described in detail below with specific embodiments. The following specific embodiments can be combined with each other, and the same or similar concepts or processes may not be described again in some embodiments.

[0062] In this application, an air conditioning controller is used as the executing entity to perform a vehicle air conditioning energy-saving mode control method according to the following embodiments. Specifically, the executing entity can be a hardware device of the air conditioning controller, or a software application in the air conditioning controller that implements the following embodiments, or a computer-readable storage medium installed with the software application that implements the following embodiments, or code that implements the software application.

[0063] Figure 1 shows a flowchart of a vehicle air conditioning energy-saving mode control method according to an embodiment of this application. As shown in Figure 1, with the air conditioning controller as the executing entity, the method of this embodiment may include the following steps:

[0064] S101. When the air conditioner is in energy-saving mode, obtain the ambient temperature.

[0065] In this embodiment, when the user turns on the air conditioner and activates the energy-saving mode, the air conditioner controller can generate a command to enter the intelligent ventilation mode and obtain the ambient temperature.

[0066] It should be understood that intelligent ventilation mode can achieve energy-saving effects. However, before entering intelligent ventilation mode, it is necessary to determine whether entering intelligent ventilation mode will affect driving safety based on the ambient temperature.

[0067] S102. When the ambient temperature range corresponds to spring or autumn, determine whether the probability of the car window fogging is higher than the preset probability and whether the air blowing mode includes the window blowing mode.

[0068] In this embodiment, the ambient temperature range includes three intervals: ambient temperature T is less than or equal to a first temperature threshold, ambient temperature T is greater than the first temperature threshold and less than a second temperature threshold, and ambient temperature T is greater than or equal to the second temperature threshold. The first temperature threshold is less than the second temperature threshold. For example, the temperature range includes three intervals: T ≤ 10℃, 10℃ < T < 20℃, and T ≥ 20℃.

[0069] When the ambient temperature T is greater than the first temperature threshold and less than the second temperature threshold, the season corresponding to that temperature range can be considered spring or autumn. When the ambient temperature T is less than or equal to the first temperature threshold, the season corresponding to that temperature range is winter. When the ambient temperature T is greater than or equal to the second temperature threshold, the season corresponding to that temperature range is summer.

[0070] In spring and autumn, for driving safety reasons, it is necessary to turn on the dehumidification mode to defog the windows. Determining whether to turn on the dehumidification mode involves judging whether the probability of the windows fogging up is higher than the preset probability and whether the air blowing mode includes a window blowing mode.

[0071] Taking 10℃<T<20℃ as an example, the probability of fogging of car windows is calculated as follows.

[0072] At an ambient temperature of 10℃, the probability of fogging is 1 when the temperature difference between the glass temperature and the dew point temperature is 2℃, and 0 when the temperature difference is 7℃. Interpolation can be used to calculate the fogging probability corresponding to different temperature differences between the glass temperature and the dew point temperature at an ambient temperature of 10℃. For example, the probability of fogging is 0.4 when the temperature difference between the glass temperature and the dew point temperature is 5℃.

[0073] At an ambient temperature of 20℃, the probability of fogging is 1 when the temperature difference between the glass temperature and the dew point temperature is 3℃, and 0 when the temperature difference is 8℃. Interpolation can be used to calculate the fogging probability corresponding to different temperature differences between the glass temperature and the dew point temperature at an ambient temperature of 20℃. The probability of fogging is 0.6 when the temperature difference between the glass temperature and the dew point temperature is 5℃.

[0074] By combining the probability of fogging corresponding to different temperature differences between glass temperature and dew point temperature at ambient temperatures of 10℃ and 20℃, the probability of fogging corresponding to different temperature differences between glass temperature and dew point temperature at other ambient temperatures within the temperature range of 10℃<T<20℃ can be calculated using the interpolation method.

[0075] The glass temperature and dew point temperature can be obtained from the vehicle's temperature and humidity sensors. Optionally, a fogging probability greater than 0.8 can be considered a high level of fogging, meaning the preset probability can be set to 0.8.

[0076] The blower modes include face blowing mode, face and foot blowing mode, foot blowing mode, foot and window blowing mode, and window blowing mode. It can be understood that foot and window blowing mode and window blowing mode are both blower modes that include window blowing mode.

[0077] S103. If the probability of fogging is less than the preset probability and the blowing mode does not include the window blowing mode, control the air conditioner to enter the ventilation mode.

[0078] In this embodiment, if the probability of fogging is less than the preset probability and the blowing mode does not include the window blowing mode, it indicates that the car window does not need to be defogged or defrosted. At this time, the air conditioning controller can control the air conditioning to enter the ventilation mode.

[0079] Optionally, controlling the air conditioner to enter ventilation mode can be achieved by controlling the compressor to stop working, and / or by controlling the high-pressure heater to stop working.

[0080] The vehicle air conditioning energy-saving mode control method provided in this embodiment determines an energy-saving strategy based on the ambient temperature range when the air conditioning is in energy-saving mode. During spring and autumn, by determining whether the probability of fogging is higher than a preset probability and whether the airflow mode includes a window blowing mode, the air conditioning is controlled to enter ventilation mode without affecting driving safety. This means the compressor and / or high-pressure heater stop working, thereby achieving energy-saving effects.

[0081] Figure 2 shows a flowchart of another vehicle air conditioning energy-saving mode control method provided in an embodiment of this application. As shown in Figure 2, based on the embodiment shown in Figure 1, with the air conditioning controller as the execution subject, if only the compressor is controlled to stop working, after controlling the compressor to stop working, the method of this embodiment further includes the following steps:

[0082] S201. Obtain the target temperature and actual temperature of each temperature zone head.

[0083] If the target temperature for each temperature zone can be set independently, then the target temperature at the beginning of each temperature zone needs to be obtained separately. If the target temperature for each temperature zone cannot be set independently, then the target temperature at the beginning of the set temperature zone is obtained as the target temperature for multiple temperature zones. For example, if the temperature of the driver's seat can be set independently, then the target temperature of the driver's seat is obtained; if the temperature of the rear seats cannot be set independently, then the target temperature of the rear seats is obtained as the target temperature of one temperature zone.

[0084] Each temperature zone can be equipped with a temperature sensor to collect the actual temperature at the head of each zone. The air conditioning controller can receive the actual temperature data collected by the temperature sensors from each temperature zone.

[0085] Alternatively, a single temperature sensor can be used for multiple temperature zones. The actual temperature of the head of each temperature zone can be estimated based on the sensor's location and the distance to the head of the zone to be detected. For example, a temperature sensor can be installed in both the front and rear seats of the vehicle. The actual temperature of the head of the two front temperature zones can be estimated based on the temperature collected by the front temperature sensor and its distance from the two front temperature zones. Similarly, the actual temperature of the head of the two rear temperature zones can be estimated based on the temperature collected by the rear temperature sensor and its distance from the two rear temperature zones.

[0086] S202. Based on the target temperature and the actual temperature, determine whether the control error of each temperature zone head is less than the preset temperature difference.

[0087] In this embodiment, for the sake of user comfort, the difference between the target temperature and the actual temperature of each temperature zone head is used to determine whether the user's comfort needs are met. For example, if the control error of each temperature zone head is less than 3°C, it can be considered that the user's comfort needs are met.

[0088] This preset temperature difference can also be customized by the user to improve the user experience. If the user prefers energy saving, the preset temperature difference can be set higher, such as 3℃; if the user prefers comfort, the preset temperature difference can be set lower, such as 1.5℃.

[0089] S203. When the control error of each temperature zone head is less than the preset temperature difference, the high-pressure heater is stopped.

[0090] In this embodiment, when the control error of each temperature zone head is less than the preset temperature difference, it can be considered that the user's comfort needs are met. At this time, the air conditioner controller can control the high-pressure heater to stop working to meet the energy-saving requirements, thereby achieving the effect of balancing user comfort and air conditioner energy saving.

[0091] S204. When the control error of at least one temperature zone head is greater than or equal to the preset temperature difference, the air conditioner is controlled to enter the heating mode.

[0092] In this embodiment, user comfort needs are also considered during spring and autumn seasons. Energy-saving control is implemented based on the user-set target temperature and the actual temperature inside the vehicle. If the control error of at least one temperature zone is greater than or equal to the preset temperature difference, it indicates that the current energy-saving mode does not meet the user's comfort needs. Since the ambient temperature range corresponds to spring and autumn, the air conditioning controller controls the air conditioning to enter heating mode, thereby more efficiently controlling the temperature of the temperature zone to reach the actual temperature, meeting the user's comfort needs, and improving the user experience.

[0093] If entering heating mode does not meet the user's needs, the air conditioner controller can also intelligently exit energy-saving mode based on the user's operation. This process will be described in subsequent embodiments.

[0094] Optionally, after performing step S204, the air conditioning controller may also perform the following steps:

[0095] S205. When the actual temperature of at least one temperature zone head is greater than the first preset temperature, the operating power of the high-pressure heater is controlled to be less than the preset power.

[0096] For example, if the actual temperature of at least one temperature zone head is greater than 20°C, the air conditioning controller can control the working power of the high-pressure heater to be less than 600W, thereby reducing energy consumption while meeting the user's comfort needs and achieving energy-saving effect.

[0097] In some embodiments, based on the embodiment shown in FIG1, if the probability of fogging is greater than or equal to a preset probability, or if the blowing mode includes a window blowing mode, the air conditioner is controlled to enter the dehumidification mode.

[0098] In this embodiment, if the probability of fogging is greater than or equal to the preset probability, or if the blowing mode includes the window blowing mode, it indicates that the current energy-saving state will affect driving safety. Therefore, the air conditioning controller can control the air conditioning to enter the dehumidification mode in order to perform operations such as defogging and defrosting, thereby improving driving safety.

[0099] Optionally, after the air conditioner controller puts the air conditioner into dehumidification mode, it can also put the air conditioner into heating mode when the target temperature at the head of at least one temperature zone is greater than the actual temperature of the corresponding temperature zone.

[0100] After the air conditioner enters dehumidification mode, it can also switch to other modes based on the user's set target temperature. If the user-set target temperature for a certain temperature zone is higher than the actual temperature of that zone, the air conditioner controller can switch the air conditioner to heating mode to meet the user's needs.

[0101] Optionally, in this embodiment, after the air conditioner controller controls the air conditioner to enter the heating mode, when the actual temperature at the head of at least one temperature zone is greater than the first preset temperature, the air conditioner controller can also control the working power of the high-pressure heater to be less than the preset power, so as to reduce the energy consumption of the air conditioner as much as possible while meeting the user's needs.

[0102] In some embodiments, when the ambient temperature range corresponds to winter or summer, the air conditioning controller determines the air outlet temperature based on the target temperature and actual temperature at the head of each temperature zone, the target air volume level, the ambient temperature, and the sunlight intensity, and performs air conditioning energy-saving mode control according to the control strategy corresponding to the temperature range and the air outlet temperature.

[0103] Among them, the outlet air temperature is negatively correlated with the ambient temperature.

[0104] Specifically, the air outlet temperature of an air conditioner = f(head temperature control error) + f(ambient temperature) + f(sunlight intensity) + f(air volume level).

[0105] Where f (head temperature control error) represents the difference between the actual temperature of the head section of the temperature zone and the target temperature.

[0106] f(ambient temperature) represents the effect of ambient temperature on outlet air temperature. The higher the ambient temperature, the lower the outlet air temperature, meaning that the outlet air temperature is negatively correlated with the ambient temperature.

[0107] f(sunlight intensity) represents the effect of sunlight intensity on the outlet air temperature. The higher the sunlight intensity, the lower the outlet air temperature, meaning that the outlet air temperature is negatively correlated with the ambient temperature.

[0108] f (air volume rating) indicates the effect of air volume on outlet air temperature. The smaller the air volume, the lower the outlet air temperature, meaning that the outlet air temperature is positively correlated with the ambient temperature.

[0109] Optionally, the air conditioning energy-saving mode is controlled according to the control strategy corresponding to the temperature range and the outlet air temperature, including:

[0110] When the ambient temperature range corresponds to winter, the water temperature of the high-pressure heater should be controlled to be less than or equal to the preset water temperature based on the outlet air temperature.

[0111] When the ambient temperature range corresponds to the summer season, the evaporator temperature is controlled to be greater than or equal to the second preset temperature based on the air outlet temperature.

[0112] It should be understood that in winter heating mode, the outlet air temperature is controlled by the water temperature of the high-pressure heater, for example, by controlling the PTC water temperature. In summer cooling mode, the outlet air temperature is controlled by the evaporator temperature.

[0113] Table 1 compares the PTC water temperature corresponding to different air outlet temperatures when the energy-saving mode (ECO) is turned on and off in winter.

[0114] Table 1

[0115] As shown in Table 1, when the energy-saving mode is activated during winter heating, the air conditioning controller can control the PTC water temperature to be less than or equal to the preset water temperature of 45℃. Specifically, when the outlet air temperature is less than 30℃, the PTC water temperature is controlled to be equal to the outlet air temperature; when the outlet air temperature is greater than or equal to 30℃, the PTC water temperature is controlled to be lower than the outlet air temperature, with an upper limit of 45℃.

[0116] When the energy-saving mode is not activated during winter heating, the air conditioning controller can control the PTC water temperature to be less than or equal to the preset water temperature of 65℃. Specifically, when the outlet air temperature is less than or equal to 65℃, the PTC water temperature is controlled to be equal to the outlet air temperature; when the outlet air temperature is greater than 65℃, the PTC water temperature is controlled to be equal to 65℃.

[0117] Table 2 shows a comparison of evaporator temperatures corresponding to different outlet air temperatures when the energy-saving mode is on and off in summer.

[0118] Table 2

[0119] As shown in Table 2, when the energy-saving mode is activated during summer cooling operation, the air conditioner controller can control the evaporator temperature to be greater than or equal to the second preset temperature by 5°C. Specifically, at the same outlet air temperature, the evaporator temperature in energy-saving mode is greater than or equal to the evaporator temperature when energy-saving mode is not activated, thereby limiting the compressor power and achieving energy-saving effects.

[0120] In this embodiment, for heating and cooling operations in winter and summer, energy consumption is minimized while meeting user comfort needs as much as possible. The air outlet temperature is determined based on factors such as head temperature control error and ambient temperature, and then the air conditioning energy-saving mode is controlled. This ensures that the actual temperature inside the vehicle is as close as possible to the set target temperature to meet user needs, balancing user temperature requirements with energy-saving requirements under different ambient temperatures, thus improving the user experience.

[0121] In some embodiments, when the air conditioner is in energy-saving mode, the air conditioner controller can also control the air conditioner to exit energy-saving mode if any of the following five conditions are met:

[0122] Condition 1: Activate the maximum defrost mode.

[0123] Specifically, in maximum defrost mode, the air conditioning controller can adjust the air conditioning to the highest temperature and the highest fan speed to accelerate the melting of frost or evaporation of fog on the windows in the window blowing mode.

[0124] Condition 2: Activate the maximum cooling mode.

[0125] Specifically, in maximum cooling mode, the air conditioning controller can control the air conditioning to use the highest compressor efficiency and the maximum fan speed to reduce the temperature inside the vehicle.

[0126] Condition 3: The target temperature for any temperature zone is either the lowest or highest temperature of that zone.

[0127] For example, a user can set the target temperature for any temperature zone to LO or HI.

[0128] Condition 4: When the season corresponding to the ambient temperature range is winter, more than a preset number of heating requests are received within a preset time period, and the final requested temperature is greater than the third preset temperature.

[0129] For example, if the ambient temperature is <10℃, the user increases the temperature three times within 10 minutes, and the final set temperature is ≥26℃.

[0130] Condition 5: When the ambient temperature range corresponds to the summer season, more than a preset number of cooling requests are received within a preset time period, and the final requested temperature is less than the fourth preset temperature.

[0131] For example, if the ambient temperature is >22℃, the user lowers the temperature three times within 10 minutes, and the final set temperature is ≤18℃.

[0132] In this embodiment, the air conditioner controller can also determine the user's intention based on the user's operation of the air conditioner and intelligently exit the ECO mode to meet the user's expectations and improve the user experience.

[0133] Figure 3 shows a schematic diagram of a vehicle air conditioning energy-saving mode control device according to an embodiment of this application. As shown in Figure 3, the vehicle air conditioning energy-saving mode control device 10 of this embodiment is used to implement the operation corresponding to the air conditioning controller in any of the above method embodiments. The vehicle air conditioning energy-saving mode control device 10 of this embodiment includes:

[0134] The acquisition module 11 is used to acquire the ambient temperature in response to the dehumidification command when the air conditioner is in energy-saving mode;

[0135] The judgment module 12 is used to determine whether the probability of the car window fogging is higher than the preset probability and whether the blowing mode includes the window blowing mode when the ambient temperature range corresponds to the spring and autumn seasons.

[0136] Control module 13 is used to control the air conditioner to enter ventilation mode if the probability of fogging is less than the preset probability and the blowing mode does not include the window blowing mode.

[0137] The vehicle air conditioning energy-saving mode control device 10 provided in this application embodiment can execute the above method embodiment. Its specific implementation principle and technical effect can be found in the above method embodiment, and will not be repeated here.

[0138] Figure 4 shows a schematic diagram of the hardware structure of a controller provided in an embodiment of this application. As shown in Figure 4, the controller 20 is used to implement the operation corresponding to the air conditioner controller in any of the above method embodiments. The controller 20 in this embodiment may include: a memory 21, a processor 22, and a communication interface 24.

[0139] The memory 21 is used to store computer programs. The memory 21 may include high-speed random access memory (RAM) and may also include non-volatile memory (NVM), such as at least one disk storage device, and may also be a USB flash drive, external hard drive, read-only memory, disk or optical disc, etc.

[0140] Processor 22 is used to execute computer programs stored in memory to implement the methods in the above embodiments. For details, please refer to the relevant descriptions in the foregoing method embodiments. The processor 22 can be a Central Processing Unit (CPU), or other general-purpose processors, digital signal processors (DSPs), application-specific integrated circuits (ASICs), etc. A general-purpose processor can be a microprocessor or any conventional processor. The steps of the methods disclosed in this invention can be directly implemented by a hardware processor, or implemented by a combination of hardware and software modules within the processor.

[0141] Alternatively, the memory 21 can be either standalone or integrated with the processor 22.

[0142] When the memory 21 is a device independent of the processor 22, the controller 20 may further include a bus 23. This bus 23 is used to connect the memory 21 and the processor 22. The bus 23 may be an Industry Standard Architecture (ISA) bus, a Peripheral Component Interconnect (PCI) bus, or an Extended Industry Standard Architecture (EISA) bus, etc. Buses can be categorized as address buses, data buses, control buses, etc. For ease of illustration, the buses shown in the accompanying drawings are not limited to a single bus or a single type of bus.

[0143] The communication interface 24 can be connected to the processor 22 via the bus 23. The processor 22 can control the communication interface 24 to realize the functions of receiving and sending signals.

[0144] The controller 20 provided in this embodiment can be used to execute the above-described vehicle air conditioning energy-saving mode control method. Its implementation method and technical effect are similar, and will not be described again in this embodiment.

[0145] This application also provides a computer-readable storage medium storing a computer program / instructions, which, when executed by a processor, are used to implement the methods provided in the various embodiments described above.

[0146] The computer-readable storage medium can be a computer storage medium or a communication medium. A communication medium includes any medium that facilitates the transfer of a computer program from one location to another. A computer storage medium can be any available medium accessible to a general-purpose or special-purpose computer. For example, a computer-readable storage medium is coupled to a processor, enabling the processor to read information from and write information to the computer-readable storage medium. Of course, the computer-readable storage medium can also be a component of the processor. The processor and the computer-readable storage medium can reside in an Application Specific Integrated Circuit (ASIC). Alternatively, the ASIC can reside in a user equipment. Of course, the processor and the computer-readable storage medium can also exist as discrete components in a communication device.

[0147] Specifically, the computer-readable storage medium can be implemented by any type of volatile or non-volatile storage device or a combination thereof, such as Static Random-Access Memory (SRAM), Electrically Erasable Programmable Read-Only Memory (EEPROM), Erasable Programmable Read Only Memory (EPROM), Programmable Read-Only Memory (PROM), Read-Only Memory (ROM), magnetic storage, flash memory, magnetic disk, or optical disk. The storage medium can be any available medium accessible to general-purpose or special-purpose computers.

[0148] This application also provides a computer program product comprising a computer program / instructions stored in a computer-readable storage medium. At least one processor of the device can read the computer program / instructions from the computer-readable storage medium, and the at least one processor executes the computer program / instructions to cause the device to perform the methods provided in the various embodiments described above.

[0149] In the several embodiments provided in this application, it should be understood that the disclosed apparatus and methods can be implemented in other ways. For example, the apparatus embodiments described above are merely illustrative; for instance, the division of modules is only a logical functional division, and in actual implementation, there may be other division methods. For example, multiple modules may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the coupling or direct coupling or communication connection shown or discussed may be through some interfaces; the indirect coupling or communication connection between apparatuses or modules may be electrical, mechanical, or other forms.

[0150] The modules can be physically separate, for example, installed in different locations within a single device, installed on different devices, distributed across multiple network units, or distributed across multiple processors. Alternatively, the modules can be integrated, for example, installed in the same device, or integrated into a single codebase. The modules can exist in hardware form, software form, or a combination of both. This application can select some or all of the modules to achieve the objectives of this embodiment based on actual needs.

[0151] It should be understood that although the steps in the flowcharts of the above embodiments are shown sequentially according to the arrows, these steps are not necessarily executed in the order indicated by the arrows. Unless explicitly stated herein, there is no strict order restriction on the execution of these steps, and they can be executed in other orders. Moreover, at least some of the steps in the figures may include multiple sub-steps or multiple stages. These sub-steps or stages are not necessarily completed at the same time, but can be executed at different times, and their execution order is not necessarily sequential, but can be performed alternately or in turn with other steps or at least some of the sub-steps or stages of other steps.

[0152] It should be noted that the user information (including but not limited to user device information, user personal information, etc.) and data (including but not limited to data used for analysis, data stored, data displayed, etc.) involved in this application are all information and data authorized by the user or fully authorized by all parties. Furthermore, the collection, use and processing of the relevant data must comply with the relevant laws, regulations and standards of the relevant countries and regions, and corresponding operation portals are provided for users to choose to authorize or refuse.

[0153] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and not to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A method for controlling a vehicle air conditioning energy-saving mode, characterized in that, The method includes: When the air conditioner is in energy-saving mode, it obtains the ambient temperature. When the ambient temperature range corresponds to the spring and autumn seasons, determine whether the probability of the car window fogging is higher than the preset probability and whether the blowing mode includes the window blowing mode. If the probability of fogging is less than the preset probability and the blowing mode does not include the window blowing mode, control the air conditioner to enter the ventilation mode.

2. The method according to claim 1, characterized in that, The control of the air conditioner to enter ventilation mode includes: Control the compressor to stop working; And / or, control the high-pressure heater to stop working.

3. The method according to claim 2, characterized in that, If only the compressor is controlled to stop working, after controlling the compressor to stop working, it also includes: Obtain the target temperature and actual temperature of each temperature zone head; Based on the target temperature and the actual temperature, determine whether the control error of each temperature zone head is less than the preset temperature difference; When the control error of each temperature zone head is less than the preset temperature difference, the high-pressure heater is controlled to stop working.

4. The method according to claim 3, characterized in that, Also includes: When the control error of at least one temperature zone head is greater than or equal to the preset temperature difference, the air conditioner is controlled to enter the heating mode.

5. The method according to any one of claims 1 to 4, characterized in that, Also includes: If the probability of fogging is greater than or equal to the preset probability, or if the blowing mode includes a window blowing mode, control the air conditioner to enter the dehumidification mode.

6. The method according to claim 5, characterized in that, After the air conditioner is put into dehumidification mode, the following is also included: When the target temperature at the head of at least one temperature zone is greater than the actual temperature of the corresponding temperature zone, the air conditioner is controlled to enter heating mode.

7. The method according to claim 6, characterized in that, After the air conditioner is put into heating mode, the following is also included: When the actual temperature at the head of at least one temperature zone is greater than the first preset temperature, the operating power of the high-pressure heater is controlled to be less than the preset power.

8. The method according to any one of claims 1 to 4, characterized in that, Also includes: When the ambient temperature range corresponds to winter or summer, the air outlet temperature of the air conditioner is determined based on the target temperature and actual temperature at the head of each temperature zone, the target air volume level, the ambient temperature, and the sunlight intensity. The air outlet temperature is negatively correlated with the ambient temperature. Based on the control strategy corresponding to the temperature range and the air outlet temperature, the air conditioning energy-saving mode is controlled.

9. The method according to claim 8, characterized in that, The step of controlling the air conditioner energy-saving mode according to the control strategy corresponding to the temperature range and the outlet air temperature includes: When the ambient temperature range corresponds to winter, the water temperature of the high-pressure heater is controlled to be less than or equal to the preset water temperature based on the outlet air temperature. When the ambient temperature range corresponds to the summer season, the evaporator temperature is controlled to be greater than or equal to the second preset temperature based on the outlet air temperature.

10. The method according to any one of claims 1 to 4, characterized in that, Also includes: When the air conditioner is in energy-saving mode, it will exit energy-saving mode if any of the following conditions are met: Condition 1: Defrost mode is enabled at maximum settings; Condition 2: Activate maximum cooling mode; Condition 3: The target temperature for any temperature zone is either the lowest or highest temperature of that zone. Condition 4: When the season corresponding to the ambient temperature range is winter, more than a preset number of heating requests are received within a preset time period and the final requested temperature is greater than a third preset temperature. Condition 5: When the season corresponding to the ambient temperature range is summer, more than a preset number of cooling requests are received within a preset time period, and the final requested temperature is less than the fourth preset temperature.

11. A vehicle air conditioning energy-saving mode control device, characterized in that, The device includes: The acquisition module is used to acquire the ambient temperature when the air conditioner is in energy-saving mode; The judgment module is used to determine whether the probability of the car window fogging is higher than a preset probability and whether the blowing mode includes the window blowing mode when the season corresponding to the ambient temperature range is spring and autumn. The control module is used to control the air conditioner to enter the ventilation mode if the fogging probability is less than the preset probability and the blowing mode does not include the window blowing mode.

12. A controller, characterized in that, The controller includes: a memory and a processor; The memory is used to store computer programs; The processor is used to execute the computer program stored in the memory to implement the vehicle air conditioning energy-saving mode control method as described in any one of claims 1 to 10.

13. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores a computer program, which, when executed by a processor, is used to implement the vehicle air conditioning energy-saving mode control method as described in any one of claims 1 to 10.

14. A computer program product, characterized in that, The computer program product includes a computer program that, when executed by a processor, implements the vehicle air conditioning energy-saving mode control method according to any one of claims 1 to 10.

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