Control method for vehicle air conditioning refrigeration and vehicle

Abstract

This invention discloses a control method for vehicle air conditioning cooling and a vehicle. The method includes: determining whether to activate the vehicle's short-distance cooling mode; wherein the short-distance cooling mode meets the vehicle's short-distance air conditioning needs; short-distance refers to a driving time less than a set time; in the short-distance cooling mode, adjusting the vehicle's cooling mode and the airflow mode of the location adjacent to the return air vent to lower the air temperature at the return air vent. The technical solution provided by this invention, by adjusting the airflow mode of the vehicle's air conditioning vents in the short-distance cooling mode, causes the cold air blown from the air conditioning vents to be preferentially drawn into the adjacent return air vents, thereby reducing the return air temperature. This reduces the power required by the air conditioning compressor to process cold air, thus achieving effective energy savings in short-distance driving scenarios.

Description

Technical Field

[0001] This invention relates to the field of vehicle air conditioning technology, and more particularly to a control method for vehicle air conditioning refrigeration and a vehicle. Background Technology

[0002] When a vehicle is used for a short period of time, the user may stop the trip before the interior has cooled down, or even before it has cooled down completely. This results in wasted cooling energy and affects the vehicle's air conditioning energy consumption. Summary of the Invention

[0003] This invention provides a control method and vehicle for vehicle air conditioning cooling, so as to improve the energy utilization rate of the vehicle during short-distance travel and reduce the power consumption of the air conditioning during short-distance travel.

[0004] According to one aspect of the present invention, a method for controlling vehicle air conditioning cooling is provided, comprising: Determine whether to activate the vehicle's short-distance cooling mode; wherein, the short-distance cooling mode meets the vehicle's short-distance air conditioning needs; short-distance refers to a driving time less than the set time. In the vehicle's short-distance cooling mode, the air outlet area corresponding to the area adjacent to the return air vent is controlled to send air to the area adjacent to the return air vent, thereby reducing the air temperature at the return air vent.

[0005] Optionally, determining whether to activate the vehicle's short-distance cooling mode includes: Obtain vehicle usage status information; wherein, the usage status information includes: user interaction content with the vehicle and passenger information of the front passenger; Based on the usage status information, determine whether the vehicle's short-distance air conditioning needs are met.

[0006] Optionally, the interactive content includes: navigation time to the destination, and / or whether the user has activated the short-distance driving mode; based on the usage status information, determining whether the vehicle's short-distance air conditioning needs are met includes: If the navigation time to the destination is less than the first preset time, and / or the vehicle's short-distance travel mode is turned on, and there is no passenger in the front passenger seat of the vehicle, then the vehicle's short-distance air conditioning requirement is met. Otherwise, it is determined that the vehicle does not meet the short-distance air conditioning requirements.

[0007] Optionally, the vehicle's air return vent is located in the passenger side foot area.

[0008] Optionally, the air conditioning vents on the driver's side and the air conditioning vents on the passenger side of the vehicle can be adjusted independently.

[0009] Optionally, in the vehicle's short-distance cooling mode, controlling the air outlet area corresponding to the area adjacent to the return air vent to supply air to the area adjacent to the return air vent, thereby reducing the air temperature at the return air vent, includes: The vehicle's air conditioning system is set to recirculation mode, and the air vents on the passenger side are adjusted to blow air onto the feet.

[0010] Optionally, the first preset time is the air conditioning power consumption of the vehicle's air conditioning system in short-distance cooling mode, which is lower than the operating time threshold of the air conditioning power consumption in normal cooling mode.

[0011] Optionally, obtain passenger information for the front passenger seat, including: Based on the detection of the passenger seat belt, and / or the passenger seat image, and / or the passenger seat quality detection, determine whether there is an occupant in the front passenger seat of the vehicle.

[0012] Optionally, under the condition of satisfying the short-distance cooling requirement, the cooling mode of the air conditioner in the passenger seat is adjusted, and the method further includes: Get vehicle usage time and interior temperature; If the driving time exceeds 40 minutes, or if the driving time exceeds 30 minutes and the interior temperature is higher than the preset temperature, the short-distance cooling mode will be exited.

[0013] According to another aspect of the present invention, a vehicle is provided, comprising: an air conditioning system and a vehicle controller; the air return vent of the air conditioning system is disposed in the foot area of ​​the passenger side of the vehicle, and the vehicle controller is used to perform air conditioning cooling control by executing the vehicle air conditioning cooling control method according to any one of the first aspects of the present invention.

[0014] The technical solution provided by this invention adjusts the airflow pattern of the vehicle's air conditioning vents in short-distance cooling mode, causing the cold air blown out of the vents to be preferentially drawn into the adjacent return air vents, thereby reducing the return air temperature. This reduces the power required by the air conditioning compressor to process the cold air, thus achieving effective energy savings in short-distance driving scenarios.

[0015] It should be understood that the description in this section is not intended to identify key or essential features of the embodiments of the present invention, nor is it intended to limit the scope of the invention. Other features of the invention will become readily apparent from the following description. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 A schematic flowchart illustrating a vehicle air conditioning cooling control method provided in an embodiment of the present invention; Figure 2 A schematic flowchart illustrating another vehicle air conditioning cooling control method provided in an embodiment of the present invention; Figure 3 A schematic flowchart illustrating another vehicle air conditioning cooling control method provided in an embodiment of the present invention; Figure 4 A schematic flowchart illustrating another vehicle air conditioning cooling control method provided in an embodiment of the present invention; Figure 5 This invention provides a schematic diagram of energy consumption curves for a vehicle air conditioner under different cooling modes. Figure 6 A schematic flowchart illustrating another vehicle air conditioning cooling control method provided in an embodiment of the present invention; Figure 7 This is a partial structural diagram of a vehicle provided in an embodiment of the present invention. Detailed Implementation

[0018] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of the present invention.

[0019] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this invention 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 interchanged where appropriate so that the embodiments of the invention described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0020] Figure 1 This is a flowchart illustrating a vehicle air conditioning cooling control method provided in an embodiment of the present invention. Figure 1 As shown, the control method for the vehicle's air conditioning cooling includes: S110. Determine whether to activate the vehicle's short-distance cooling mode.

[0021] Specifically, the vehicle short-distance cooling mode is a special cooling mode designed to reduce air conditioning energy consumption during short-distance trips while maintaining a certain level of comfort. When the vehicle is on a short trip and meets the air conditioning needs for that trip, the short-distance cooling mode can be activated. "Short-distance" refers to a travel time shorter than a set duration. The set duration can be understood as the critical point between the air conditioning energy consumption of the short-distance cooling mode and the normal cooling mode. When the travel time is shorter than the set duration, the air conditioning energy consumption of the short-distance cooling mode is significantly lower than that of the normal cooling mode. The set duration can be determined through air conditioning energy consumption experiments based on the vehicle type.

[0022] S120. In the short-distance cooling mode of the vehicle, the air outlet area corresponding to the area adjacent to the return air vent is controlled to send air to the area adjacent to the return air vent, so as to reduce the air temperature at the return air vent.

[0023] Specifically, after determining to enter short-range cooling mode, the operating mode of the vehicle's air conditioning system can be adjusted, and the blowing mode of the air conditioning outlets corresponding to the area adjacent to the air conditioning return vent inside the vehicle can be adjusted to blow air towards the air conditioning return vent. This will lower the air temperature in the air conditioning return vent area due to the cold air blown out by the air conditioning outlets. The air conditioning return vent will then transport the low-temperature gas into the air conditioning compressor, thereby saving energy consumption for air conditioning cooling.

[0024] The technical solution provided by this invention adjusts the airflow pattern of the vehicle's air conditioning vents in short-distance cooling mode, causing the cold air blown out of the vents to be preferentially drawn into the adjacent return air vents, thereby reducing the return air temperature. This reduces the power required by the air conditioning compressor to process the cold air, thus achieving effective energy savings in short-distance driving scenarios.

[0025] Figure 2 This is a schematic flowchart illustrating another vehicle air conditioning cooling control method provided in an embodiment of the present invention. Optionally, based on the above embodiments, see... Figure 2 The vehicle's air conditioning cooling control method includes: S210. Obtain vehicle usage status information.

[0026] The usage status information includes user-vehicle interactions and passenger information (specifically, the front passenger seat occupant information). Specifically, usage status information can reflect the vehicle's objective operating status or various other types of information reflecting the user's subjective usage intentions. User-vehicle interactions can reflect the user's subjective usage intentions; this information can be obtained through human-machine interaction and used to determine whether the upcoming trip is a short-distance journey. Passenger information (specifically, the front passenger seat occupant information) can be obtained through in-vehicle detection equipment to further determine whether the vehicle's air conditioning needs for short-distance travel are met. Furthermore, user-vehicle interactions can include navigation time to the destination and whether the user has activated the short-distance driving mode. Users can set their destinations through the vehicle's navigation system, a connected mobile phone, or other communication devices, allowing the vehicle to know the navigation time to the destination and thus determine whether the upcoming trip is a short-distance journey. The short-distance driving mode can be a switch used to inform the vehicle of an upcoming short-distance trip. In essence, when a user has a short-distance travel need, they can actively activate the short-distance driving mode to inform the vehicle of their subjective usage intentions. For example, when a user is traveling a short distance and does not need navigation, the user can turn on the short-distance driving mode so that the vehicle knows that a short trip is about to begin.

[0027] S220. Based on the usage status information, determine whether the vehicle's short-distance air conditioning needs are met.

[0028] Specifically, when user interaction with the vehicle indicates an upcoming short trip, and the passenger information in the front passenger seat meets the conditions for activating the short-trip cooling mode, the vehicle's short-trip air conditioning needs can be determined. By introducing various types of usage status information, misjudgments caused by relying on a single parameter can be avoided, improving the accuracy of activating the short-trip cooling mode. For example, without navigation, it's difficult to accurately determine whether a trip is short based solely on vehicle start time or other single conditions. However, by acquiring various types of information reflecting the vehicle's objective operating status and the user's subjective intentions, a comprehensive judgment can be made on whether the vehicle's short-trip air conditioning needs are met, thus ensuring a better user experience while making the triggering of the short-trip cooling mode more intelligent.

[0029] S230. In the vehicle's short-distance cooling mode, adjust the vehicle's cooling mode and the air blowing mode adjacent to the return air vent to lower the air temperature at the return air vent.

[0030] S240, The vehicle's air conditioning is set to normal cooling mode.

[0031] Specifically, when the user's interaction with the vehicle does not indicate that the vehicle is about to take a short trip, or when the passenger information in the front passenger seat does not meet the conditions for activating the vehicle's short-trip cooling mode, the vehicle's air conditioning will operate in normal cooling mode.

[0032] Figure 3 This is a flowchart illustrating another vehicle air conditioning cooling control method provided in an embodiment of the present invention. Based on the above embodiments, see... Figure 3 The vehicle's air conditioning cooling control method includes: S310, Obtain vehicle usage status information.

[0033] S320. Whether the navigation time to reach the destination is less than the first preset time, and / or whether the vehicle's short-distance driving mode is turned on, and whether there are no passengers in the front passenger seat. If so, then the vehicle's short-distance air conditioning needs are met.

[0034] Specifically, the navigation time to the destination and the status of the vehicle's short-distance driving mode can be used to determine whether the vehicle's next trip is a short-distance journey. Whether there is a passenger in the front passenger seat can further determine whether the vehicle's air conditioning needs are met for a short trip. If the navigation time calculated by the user is less than the first preset time, it indicates that the current travel time is short, and the next trip can be judged as a short-distance journey. In other cases, the user may not have set navigation but has actively turned on the short-distance driving mode, which also indicates that the user has a clear subjective intention to travel short, and the next trip can also be judged as a short-distance journey. Since the short-distance cooling mode requires adjusting the direction of the air conditioning vents when it is working, this action has a direct impact on the passenger's comfort. Therefore, when there is no passenger in the front passenger seat, activating the short-distance cooling mode can effectively reduce energy consumption during short trips while ensuring passenger comfort.

[0035] S330. If not, it is determined that the vehicle does not meet the short-distance air conditioning requirements, and the vehicle control air conditioning will operate in normal cooling mode.

[0036] Specifically, if the navigation time to the destination is greater than or equal to the first preset time, or if the user has not actively activated the short-distance driving mode, it indicates that the driving time for this trip is relatively long, exceeding the applicable range of the short-distance cooling mode. During long-distance driving, the normal cooling mode can more stably maintain the overall temperature environment inside the vehicle, while the energy-saving effect of the short-distance cooling mode is not significant in long-distance scenarios. Alternatively, if the navigation time is short or the short-distance driving mode is activated, but a passenger is detected in the front passenger seat, activating the short-distance cooling mode would affect the comfort of the front passenger, so it should not be activated. Therefore, when the vehicle does not meet the air conditioning needs for short trips, the normal cooling mode should be maintained.

[0037] S340. In the vehicle's short-distance cooling mode, adjust the vehicle's cooling mode and the air blowing mode adjacent to the return air vent to lower the air temperature at the return air vent.

[0038] Based on the above embodiments, when obtaining the passenger information of the front passenger seat, it is possible to determine whether there is a passenger in the front passenger seat based on the front passenger seat belt detection, and / or front passenger image detection, and / or front passenger position quality detection.

[0039] Specifically, in the above embodiments, the vehicle can comprehensively determine whether there is a passenger in the front passenger seat by one or more of the following methods: front passenger seatbelt detection, front passenger image detection, and front passenger seat mass detection. In one embodiment, the presence of a passenger can be detected by checking if the front passenger seatbelt is fastened. When a passenger is in the front passenger seat, they will usually fasten their seatbelt due to safety regulations and travel habits. The vehicle can use a sensor at the seatbelt buckle to detect whether the front passenger seatbelt is inserted. If the seatbelt is detected as inserted, it can be preliminarily inferred that there is a passenger in the front passenger seat. In another embodiment, the vehicle can install an image acquisition device, such as a camera, above, in front of, or at other locations inside the passenger compartment to capture real-time images of the front passenger seat area. By recognizing and analyzing the acquired images, the system can accurately determine whether there is a passenger in the front passenger seat. In yet another embodiment, the vehicle can arrange a pressure sensor or weight sensor under the front passenger seat to detect the mass acting on the front passenger seat. When the detected mass value exceeds a preset threshold, it can be determined that there is a passenger in the front passenger seat.

[0040] In practical applications, vehicles can use a combination of two or three of the aforementioned detection methods to obtain information about the presence of a front passenger. For example, a front passenger is only considered present when both seatbelt testing and quality checks simultaneously confirm the presence of a passenger. This effectively reduces the risk of misjudgment that might arise from a single detection method. Through the coordination and verification of multiple detection methods, the vehicle can more accurately and reliably obtain this crucial information, providing a credible basis for determining whether a passenger is present in the front passenger seat. This ensures the rationality and safety of the function's activation.

[0041] Figure 4 This is a flowchart illustrating another vehicle air conditioning cooling control method provided in an embodiment of the present invention. Based on the above embodiments, see... Figure 4 The vehicle's air conditioning cooling control method includes: S410, Obtain vehicle usage status information.

[0042] S420. If the navigation time to reach the destination is less than the first preset time, and / or the vehicle's short-distance driving mode is turned on, and there is no passenger in the front passenger seat, then the vehicle's short-distance air conditioning requirement is met.

[0043] S430. If not, it is determined that the vehicle does not meet the short-distance air conditioning requirements, and the vehicle control air conditioning will operate in normal cooling mode.

[0044] S440: Set the vehicle's air conditioning system to recirculation mode and adjust the air vents on the passenger side to foot-blowing mode.

[0045] Specifically, the adjustments made in short-distance cooling mode include: switching the vehicle's air conditioning system to recirculation mode and adjusting the airflow pattern at the location adjacent to the return air vents to lower the air temperature at the vents and thus save energy. The purpose of recirculation mode is to cut off the exchange of hot air between the passenger compartment and the outside, allowing the cooled air inside the vehicle to be repeatedly used in the closed environment. This avoids the air conditioning compressor frequently cooling newly introduced hot outside air, effectively reducing the overall workload of the air conditioning system.

[0046] In one implementation, the return air vent of the vehicle's air conditioning system can be located in the passenger side's foot area. The advantage of this arrangement is that the passenger side's foot space is relatively independent and close to the air conditioning vents, allowing the cold air blown out of the vents to be drawn into the return air vents within a short path. This lowers the temperature of the air entering the air conditioning compressor, quickly creating a localized low-temperature air circulation loop. When the return air vent is located in the passenger side's foot area, the passenger side's air conditioning vents can be set to a foot-blowing mode. In this mode, because the return air vent is located in the passenger side's foot area, adjusting the vents to foot-blowing mode concentrates the cold air blowing from the passenger side's air conditioning vents into the passenger side's foot space, precisely covering the area where the return air vent is located. Therefore, the low-temperature air blowing from the passenger side's vents travels only a very short distance before being drawn into the return air vent, resulting in minimal heat exchange loss and a significant reduction in the temperature of the air drawn in at the return air vent. When cooler air enters the air conditioning compressor, the compressor can process it to the target temperature without consuming too much power, thus reducing the energy consumption of the air conditioning in short-distance driving scenarios.

[0047] Furthermore, the air conditioning vents for the driver's side and the passenger side can be configured for independent adjustment. This means that in short-distance cooling mode, when the passenger-side vents are adjusted to blow air towards the feet, the driver's side vents can be adjusted independently, preventing the specific airflow action of short-distance cooling mode from interfering with the driver's comfort. It should be noted that in short-distance cooling mode, the vents in other locations can be automatically or manually adjusted. For example, the air conditioning vents at the windshield, rear window, and rear seats can be adjusted automatically or manually according to passenger needs.

[0048] In one implementation, when no occupants are detected in the passenger side area, the vehicle's air conditioning system can control multiple air conditioning vents corresponding to the passenger side area to direct airflow towards the area adjacent to the return air vents. Specifically, since no occupants are in the passenger side area, there is no need to prioritize passenger comfort; therefore, the passenger side area can be treated as a localized low-temperature air circulation zone. The low-temperature air blown out by the multiple air conditioning vents corresponding to the passenger side area can preferentially flow to the area where the return air vents are located and re-enter the air conditioning system within a shorter path, thereby reducing the overall air circulation and heat exchange within the vehicle cabin. This reduces the cooling load on the air conditioning compressor and improves the energy efficiency of the vehicle's air conditioning system in short-distance driving scenarios.

[0049] For example, the vehicle's air conditioning system can control the passenger-side dashboard air vents to direct air towards the vehicle's return air vents. The passenger-side dashboard air vents can be angled towards the passenger's foot area or the area adjacent to the return air vents, allowing the cool air blowing from the passenger-side dashboard air vents to flow in a preset direction towards the area where the return air vents are located. Because the airflow path between the passenger-side dashboard air vents and the return air vents is short, the heat exchange loss between the cool air and the warm air inside the vehicle is minimal during the flow, thus allowing the return air vents to preferentially draw in cooler air. When the cooler air enters the air conditioning compressor, it reduces the cooling load on the compressor, thereby reducing the vehicle's air conditioning energy consumption during short-distance driving.

[0050] In one embodiment, an air guide structure can be installed in the area corresponding to the area below the passenger seat to direct the low-temperature air blown out by other air vents of the vehicle to the area adjacent to the vehicle's return air vent. Specifically, the air guide structure can be connected to the vehicle floor area and correspondingly installed in the area below the passenger seat. When the vehicle's air conditioning system is running, the low-temperature air blown out by other air vents can flow to the area below the passenger seat under the guidance of the air guide structure, and further flow to the area where the vehicle's return air vent is located. Because the area below the passenger seat is close to the vehicle's return air vent and the air flow path is short, the heat exchange loss of the low-temperature air during the flow process is small, and the return air vent can preferentially draw in the lower-temperature air. After the lower-temperature air enters the air conditioning compressor, it can reduce the cooling load of the air conditioning compressor, thereby reducing the overall power consumption of the vehicle's air conditioning system in short-distance driving scenarios.

[0051] In one implementation, when no occupants are detected in the rear seats, the vehicle's air conditioning system can adjust the direction of the rear air vents, directing the cool air from the vents towards the area where the air return vents are located. Specifically, in normal mode, the rear air vents typically direct air towards the rear passenger area to meet their comfort needs. In this mode, the cool air needs to travel a long path through the cabin before being re-inhaled through the air return vents. This long air circulation path results in more heat exchange between the air and the warmer air in the cabin, causing the air temperature at the air return vents to rise. However, when no occupants are detected in the rear seats, the rear air vents can be adjusted to direct air towards the front passenger foot area or the area adjacent to the air return vents. This allows the cool air from the rear air vents to flow along a shorter path to the area where the air return vents are located and re-enter the air conditioning system. Because the air circulation path is shortened, the heat exchange loss during the flow of cool air is reduced, thus allowing the air return vents to preferentially draw in cooler air. When cooler air enters the air conditioning compressor, it reduces the compressor's cooling load, thereby reducing the overall power consumption of the vehicle's air conditioning system during short-distance driving.

[0052] In another implementation, when the rear passenger area of ​​the vehicle is equipped with rear air return vents, the rear air vents can be controlled to direct airflow towards the area where the rear air return vents are located. Specifically, the low-temperature air blown out by the rear air vents can preferentially form a local low-temperature air circulation in the rear passenger area and be re-drawn in by the rear air return vents. Since there are no passengers in the rear passenger area, there is no need to continuously cool the entire rear space, thereby reducing the area of ​​the entire passenger compartment's air participating in heat exchange circulation. As a result, the initial temperature of the air entering the air conditioning compressor can be reduced, decreasing the power required for the air conditioning compressor to reach the target cooling temperature, and further improving the energy-saving effect of the vehicle's air conditioning system in short-distance driving scenarios.

[0053] Figure 5 This is a schematic diagram of energy consumption curves for a vehicle air conditioner under different cooling modes, provided as an embodiment of the present invention. Optionally, based on the above embodiment, see... Figure 5 The first preset time is the air conditioning power consumption of the vehicle's air conditioning system in short-distance cooling mode, which is lower than the operating time threshold of the air conditioning power consumption in normal cooling mode.

[0054] Specifically, the first preset time can be a threshold for the operating time during which the power consumption of the vehicle's air conditioning system in short-distance cooling mode is lower than that in normal cooling mode. This can be understood as follows: when the vehicle's operating time is less than the first preset time, the power consumption of the air conditioning system in short-distance cooling mode is lower than that in normal cooling mode; when the vehicle's operating time reaches or exceeds the first preset time, the energy-saving effect of short-distance cooling mode gradually weakens. Based on this, the first preset time can be used to determine whether it is suitable to activate short-distance cooling mode to improve the energy-saving effect of the vehicle's air conditioning system. For example, curve L1 is the energy consumption curve of a certain type of vehicle air conditioning in normal cooling mode, and curve L2 is the energy consumption curve of the same type of vehicle air conditioning in short-distance cooling mode. The horizontal axis represents vehicle travel time, and the vertical axis represents air conditioning energy consumption. Table 1 shows the energy consumption performance of normal cooling mode and short-distance cooling mode in different time periods.

[0055] Table 1: Combination Figure 5As shown in Table 1, during the first 30 minutes of vehicle operation, curve L1 is significantly higher than curve L2, indicating that the energy consumption of the normal cooling mode is significantly higher than that of the short-distance cooling mode. During the 30-40 minute period of vehicle operation, curve L2 gradually becomes higher than curve L1, meaning the energy consumption of the normal cooling mode gradually decreases compared to the short-distance cooling mode. This indicates that during the first 30 minutes of vehicle operation, the vehicle's air conditioning is more energy-efficient in short-distance cooling mode compared to normal cooling mode; however, during the 30-40 minute period, the energy-saving effect of short-distance cooling mode becomes less significant compared to normal cooling mode. Therefore, before the vehicle operation time is less than 40 minutes, short-distance cooling mode can effectively reduce the vehicle's air conditioning energy consumption compared to normal cooling mode. Thus, a first preset time of less than 40 minutes can be set.

[0056] Preferably, the first preset time can be set between 30 and 40 minutes. If the first preset time is set too short, the short-distance cooling mode may not trigger. For example, if the estimated travel time is 30 minutes, but the first preset time is set to 20 minutes, it will be considered a non-short-distance trip, thus preventing the short-distance cooling mode from triggering. Therefore, setting the first preset time between 30 and 40 minutes maximizes the trigger threshold of the short-distance cooling mode, expands its applicability, and further improves energy efficiency.

[0057] Figure 6 This is a flowchart illustrating another vehicle air conditioning cooling control method provided in an embodiment of the present invention. Based on the above embodiments, see... Figure 6 The vehicle's air conditioning cooling control method includes: S510, Obtain vehicle usage status information.

[0058] S520. If the navigation time to reach the destination is less than the first preset time, and / or the vehicle's short-distance driving mode is turned on, and there is no passenger in the front passenger seat, then the vehicle's short-distance air conditioning requirement is met.

[0059] S530. If not, it is determined that the vehicle does not meet the short-distance air conditioning requirements, and the vehicle control air conditioning will operate in normal cooling mode.

[0060] S540: Control the vehicle's air conditioning system to recirculation mode and adjust the air conditioning vents on the passenger side to foot-blowing mode.

[0061] S550: Obtain vehicle usage time and interior temperature.

[0062] Specifically, once a vehicle enters short-distance cooling mode, it doesn't mean that the mode will continue until the end of the trip. In actual use, driving time and the in-vehicle environment are dynamic, therefore, it's necessary to continuously acquire vehicle usage time and in-vehicle temperature data to assess the continued applicability of the short-distance cooling mode. Usage time refers to the cumulative driving time from the start of the short-distance cooling mode activation, reflecting the actual operating time of the vehicle in short-distance cooling mode; in-vehicle temperature refers to the ambient temperature inside the vehicle cabin, reflecting the overall heat load inside the cabin during short-distance cooling mode operation. Since the short-distance cooling mode is designed for short driving times, it needs to be disengaged if the actual usage time exceeds the expected range. Usage time can be obtained through the vehicle's own timing module, while in-vehicle temperature can be collected by temperature sensors installed inside the cabin.

[0063] S560: If the driving time exceeds 40 minutes, or if the driving time exceeds 30 minutes and the interior temperature is higher than the preset temperature, the short-distance cooling mode will be deactivated.

[0064] Specifically, after obtaining the driving duration and interior temperature, the system can determine whether to exit the short-distance cooling mode based on preset criteria. These preset criteria are adaptively set, taking into account both energy efficiency and passenger comfort. For example, if the driving duration exceeds 40 minutes, it indicates that the actual driving time significantly exceeds the short-distance travel time range. During driving longer than 40 minutes, the vehicle cabin requires more balanced and stable temperature control, and the normal cooling mode provides better overall cooling and energy efficiency in such medium-to-long-distance scenarios. Therefore, when the driving duration exceeds 40 minutes, the vehicle exits the short-distance cooling mode and switches back to normal cooling mode. Furthermore, even if the driving duration has not reached 40 minutes, if the driving duration exceeds 30 minutes and the interior temperature is higher than the preset temperature, the short-distance cooling mode should also be exited. The preset temperature can be a calibrated comfort temperature threshold. When the interior temperature exceeds this threshold, it indicates that the heat load inside the vehicle has accumulated to a certain level, and relying solely on the localized cooling strategy of short-distance cooling mode is insufficient to maintain an acceptable comfort environment for the occupants. For example, in hot weather, even if the travel distance is short, the interior temperature may rise rapidly if there is prolonged idling or strong external heat radiation. Continuing to use short-distance cooling mode in this situation may cause discomfort to the occupants. Therefore, when the driving time reaches 30 minutes and the interior temperature exceeds the preset temperature, it is necessary to actively disengage the short-distance cooling mode to ensure the passenger's comfort.

[0065] By setting the above parameters, the short-distance cooling mode can achieve a reasonable balance between energy saving and passenger comfort. When conditions are suitable, the short-distance cooling mode fully leverages its advantage in reducing air conditioning energy consumption; when conditions are no longer suitable, it promptly exits and switches to normal cooling mode, ensuring that vehicle users receive a stable and reliable in-vehicle environment.

[0066] Figure 7 This is a partial structural diagram of a vehicle provided in an embodiment of the present invention. The vehicle includes an air conditioning system 10 and a vehicle controller 20; the air conditioning system 10 and the vehicle controller 20 are communicatively connected, the return air vent of the air conditioning system 10 is located in the foot area of ​​the passenger side of the vehicle, and the vehicle controller 20 is used to execute the vehicle air conditioning cooling control method provided in any of the above embodiments of the present invention to control the air conditioning cooling, and has the same beneficial effects as any of the above embodiments, which will not be described again here.

[0067] It should be understood that the various forms of processes shown above can be used, with steps reordered, added, or deleted. For example, the steps described in this invention can be executed in parallel, sequentially, or in different orders, as long as the desired result of the technical solution of this invention can be achieved, and no limitation is imposed herein.

[0068] The specific embodiments described above do not constitute a limitation on the scope of protection of this invention. Those skilled in the art should understand that various modifications, combinations, sub-combinations, and substitutions can be made according to design requirements and other factors. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this invention should be included within the scope of protection of this invention.

Claims

1. A method for controlling vehicle air conditioning cooling, characterized in that, include: Determine whether to activate the vehicle's short-distance cooling mode; wherein, the short-distance cooling mode meets the vehicle's short-distance air conditioning needs; short-distance refers to a driving time less than the set time. In the vehicle's short-distance cooling mode, the air outlet area corresponding to the area adjacent to the return air vent is controlled to send air to the area adjacent to the return air vent, thereby reducing the air temperature at the return air vent.

2. The vehicle air conditioning cooling control method according to claim 1, characterized in that, Determining whether to activate the vehicle's short-distance cooling mode includes: Obtain vehicle usage status information; wherein, the usage status information includes: user interaction content with the vehicle and passenger information of the front passenger; Based on the usage status information, determine whether the vehicle's short-distance air conditioning needs are met.

3. The vehicle air conditioning cooling control method according to claim 2, characterized in that, The interactive content includes: navigation time to the destination, and / or whether the user has activated the short-distance driving mode; based on the usage status information, determining whether the vehicle's short-distance air conditioning needs are met includes: If the navigation time to the destination is less than the first preset time, and / or the vehicle's short-distance travel mode is turned on, and there is no passenger in the front passenger seat of the vehicle, then the vehicle's short-distance air conditioning requirement is met. Otherwise, it is determined that the vehicle does not meet the short-distance air conditioning requirements.

4. The vehicle air conditioning cooling control method according to claim 2, characterized in that, The vehicle's air return vent is located in the passenger side foot area.

5. The vehicle air conditioning cooling control method according to claim 4, characterized in that, The air conditioning vents for the driver's side and the air conditioning vents for the passenger side of the vehicle are independently adjustable.

6. The vehicle air conditioning cooling control method according to claim 5, characterized in that, In the vehicle's short-haul cooling mode, the air outlet area corresponding to the area adjacent to the return air vent is controlled to supply air to the area adjacent to the return air vent, thereby reducing the air temperature at the return air vent, including: The vehicle's air conditioning system is set to recirculation mode, and the air vents on the passenger side are adjusted to blow air onto the feet.

7. The vehicle air conditioning cooling control method according to claim 3, characterized in that, The first preset time is the air conditioning power consumption of the vehicle's air conditioning system in short-distance cooling mode, which is lower than the operating time threshold of the air conditioning power consumption in normal cooling mode.

8. The vehicle air conditioning cooling control method according to claim 2, characterized in that, Obtain information about the passenger in the front passenger seat of the vehicle, including: Based on the detection of the passenger seat belt, and / or the passenger image detection, and / or the passenger position quality detection, it is determined whether there is an occupant in the front passenger seat of the vehicle.

9. The vehicle air conditioning cooling control method according to claim 1, characterized in that, Under the condition of satisfying the short-distance cooling requirement, the cooling mode of the air conditioner in the passenger seat is adjusted, and then the following is also included: Get vehicle usage time and interior temperature; If the driving time exceeds 40 minutes, or if the driving time exceeds 30 minutes and the interior temperature is higher than the preset temperature, the short-distance cooling mode will be exited.

10. A vehicle, characterized in that, include: An air conditioning system and a vehicle controller; the air return vent of the air conditioning system is located in the foot area of ​​the passenger side of the vehicle, and the vehicle controller is used to perform air conditioning cooling control by executing the vehicle air conditioning cooling control method according to any one of claims 1-9.

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