Water inflow prevention control method and system for vehicle air conditioner and vehicle

Abstract

The invention relates to a vehicle air conditioner water inflow prevention control method and system, and aims to solve the water inflow problem of an air conditioner air inlet channel without a gutter channel design. According to the method, the current rainfall, the air supply volume and the internal and external circulation proportion are obtained through the data collection step and then compared with the preset critical rainfall, and the target internal and external circulation proportion is determined according to the air volume-internal circulation proportion MAP. The system comprises a data acquisition module, a rainfall comparison module, a target proportion determination module, a proportion comparison module and a proportion adjustment module. According to the method, the space of the front cabin is effectively saved, the cost is reduced, the driving safety and the riding comfort are improved, and the method has wide application prospects.

Description

Technical Field

[0001] The present invention relates to the technical field of automobile air conditioning, and in particular to a vehicle air conditioning water ingress prevention control method, system and vehicle. Background Art

[0002] Traditional cars are usually designed with a sheet metal gutter under the front windshield, which flows into the gutter through the mesh of the rainwater ventilation window cover on the front windshield, and then flows out of the car from both sides. However, the front cabin of this gutter solution takes up a lot of space in front of the cabin, limiting the layout of parts in the cabin. With the rise of plug-in hybrid electric vehicles (PHEV), extended-range electric vehicles (REEV), and pure electric vehicles (BEV), the front cabin requires a larger layout space to accommodate the layout of new parts such as the engine, motor, and front trunk. Canceling the gutter has become an optimization option for many models.

[0003] With the removal of the gutter, it is necessary to design a new gutter-free air conditioning intake and rainwater discharge structure. At present, in order to prevent water from entering the air intake duct, the drainage structure and the air intake structure are usually designed separately. The air intake duct is usually placed in the front cabin, which will occupy the volume of the front trunk for electric vehicles; for PHEV and REEV, it will make the already crowded front cabin space less operable, and it will cost more to solve problems such as sealing and insulation.

[0004] In the prior art, most cars still use an air intake and drainage solution with a gutter. This solution has the following disadvantages: 1) The space in the front cabin is large, which is not conducive to the layout of PHEV and BEV; 2) It is heavy. Another prior art is without a gutter, and the air intake structure is completely separated from the drainage structure. The disadvantages of this solution are: the air intake structure needs to extend under the hood, occupying a large space in the front cabin, and it also needs to consider sealing and heat insulation, which is costly.

[0005] Therefore, a new technical solution is needed to solve the above problems. Summary of the invention

[0006] The object of the present invention is to provide a vehicle air conditioning water ingress prevention control method, system and vehicle, so as to solve the problem of water ingress into the air intake duct of the air conditioning without a water flow groove design in the prior art.

[0007] To achieve the above-mentioned object, in a first aspect, the present invention provides a vehicle air conditioner water ingress prevention control method, which is used for controlling water ingress into an air inlet duct of a vehicle air conditioner, wherein the air inlet duct can separate gas and liquid and has a drainage structure; the control method comprises:

[0008] Data collection steps: collecting current rainfall, current air supply volume and current internal and external circulation ratio;

[0009] A rainfall comparison step, comparing the current rainfall with a preset critical rainfall;

[0010] The target ratio determination step is to maintain the current internal and external circulation ratio when the current rainfall is less than or equal to the critical rainfall; and to determine the target internal and external circulation ratio according to the current air supply volume and the preset air volume-internal circulation ratio MAP correspondence relationship when the current rainfall is greater than the critical rainfall;

[0011] A ratio comparison step, comparing the target inner-outer cycle ratio with the current inner-outer cycle ratio;

[0012] The ratio adjustment step is as follows: when the target internal-external circulation ratio is less than or equal to the current internal-external circulation ratio, the current internal-external circulation ratio is maintained; when the target internal-external circulation ratio is greater than the current internal-external circulation ratio, the internal-external circulation ratio is adjusted to the target internal-external circulation ratio.

[0013] In some embodiments of the present invention, the preset air volume-internal circulation ratio MAP correspondence relationship is obtained by the following steps:

[0014] Establish a three-dimensional model of the vehicle model's air conditioning air intake duct;

[0015] Through three-dimensional flow field simulation, the velocity field and pressure field in the air duct under different air volumes are determined, and the intake air volume with risks is identified;

[0016] By opening different proportions of internal circulation to release pressure, the wind speed and pressure in the air intake duct are reduced, and the proportion of internal circulation is recorded to form a preliminary corresponding relationship between air volume and internal circulation proportion;

[0017] A whole vehicle water spray test is carried out to verify and correct the air volume-internal circulation ratio correspondence relationship to form an air volume-internal circulation ratio MAP.

[0018] In some embodiments of the present invention, the corresponding relationship between air volume and internal circulation ratio under different vehicle body postures is obtained, and the corresponding relationship between air volume and internal circulation ratio is determined by the highest value of internal circulation ratio under the same air supply volume to form an air volume-internal circulation ratio MAP.

[0019] In some embodiments of the present invention, the critical rainfall is obtained through a rain test, and the rainfall is divided into multiple intervals, each interval corresponding to an air volume-internal circulation ratio correspondence relationship.

[0020] In some embodiments of the present invention, the air supply volume is determined by the blower gear position.

[0021] In some embodiments of the present invention, the method also includes collecting the ambient temperature outside the vehicle, finding the internal and external circulation ratio under the corresponding ambient temperature and load value according to a preset temperature load-internal circulation table, and determining the maximum value of the above internal and external circulation ratio and the internal circulation ratio in the air volume-internal circulation ratio MAP as the target internal and external circulation ratio.

[0022] In some embodiments of the present invention, the preset temperature load-internal cycle table is formed by combining the thermal management control strategy of the whole vehicle with comprehensive road test verification and ring model test verification of the whole vehicle.

[0023] In a second aspect, the present invention provides a vehicle air conditioning water ingress prevention control system, comprising:

[0024] Data collection module, used to collect current rainfall, current air supply volume and current internal and external circulation ratio;

[0025] A rainfall comparison module is used to compare the current rainfall with a preset critical rainfall;

[0026] A target ratio determination module is used to maintain the current internal and external circulation ratio when the current rainfall is less than or equal to the critical rainfall; when the current rainfall is greater than the critical rainfall, determine the target internal and external circulation ratio according to the current air supply volume and the preset air volume-internal circulation ratio MAP correspondence relationship;

[0027] A ratio comparison module, used to compare the target inner-outer cycle ratio with the current inner-outer cycle ratio;

[0028] The ratio adjustment module is used to maintain the current internal and external circulation ratio when the target internal and external circulation ratio is less than or equal to the current internal and external circulation ratio; when the target internal and external circulation ratio is greater than the current internal and external circulation ratio, adjust the internal and external circulation ratio to the target internal and external circulation ratio.

[0029] In some embodiments of the present invention, the data acquisition module is also used to collect the ambient temperature outside the vehicle; the target ratio determination module is also used to find the internal and external circulation ratio under the corresponding ambient temperature and load value according to a preset temperature load-internal circulation table, and determine the maximum value of the above internal and external circulation ratio and the internal circulation ratio in the air volume-internal circulation ratio MAP as the target internal and external circulation ratio.

[0030] In a third aspect, the present invention provides a vehicle, comprising the vehicle air conditioning water ingress prevention control system according to the second aspect.

[0031] In a fourth aspect, the present invention provides an electronic device comprising a processor, a communication interface, a memory and a communication bus, wherein the processor, the communication interface and the memory communicate with each other via the communication bus; the memory is used to store computer programs; and the processor is used to implement any of the methods described in the first aspect when executing the programs stored in the memory.

[0032] In a fifth aspect, the present invention provides a computer-readable storage medium, wherein the computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, any method described in the first aspect is implemented.

[0033] The beneficial effects of the present invention are:

[0034] 1. Space optimization: By eliminating the traditional water flow trough design, the front cabin space is saved, providing a larger layout space for new energy vehicles such as PHEV, REEV, BEV, etc., which is conducive to the layout of new parts such as engines, motors, and front trunks.

[0035] 2. Cost savings: Simplified air intake duct design reduces material and manufacturing costs while reducing weight, helping to improve vehicle fuel efficiency or battery life.

[0036] 3. Intelligent control: By dynamically adjusting the ratio of internal and external circulation, precise and intelligent control is achieved according to factors such as rainfall, air supply, vehicle posture and ambient temperature, effectively preventing rain from entering the vehicle.

[0037] 4. Strong adaptability: Taking into account the influence of different vehicle body postures and ambient temperatures, the control is made more precise and intelligent through the preset air volume-internal circulation ratio MAP and temperature load-internal circulation table.

[0038] 5. Versatility: This method is highly versatile and can be adapted to different air intake duct solutions on different platforms, and has broad application prospects.

[0039] 6. Improved safety: By preventing rainwater from entering the car, potential safety hazards during driving are reduced and driving safety is improved.

[0040] 7. Environmental adaptability: By collecting the ambient temperature outside the vehicle and combining it with the vehicle thermal management control strategy, the air conditioning system is optimized under different environmental conditions, which improves riding comfort. The present invention can make the air intake duct design simple, occupy less space, have low cost, and have strong versatility, and can adapt to different air intake duct solutions on different platforms. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] In order to more clearly illustrate the technical solutions of the embodiments disclosed in the present invention, the drawings of the embodiments will be briefly introduced below. These drawings are only used for illustrative purposes and are not intended to limit the protection scope of the present invention.

[0042] Figure 1 is a flow chart of a vehicle air conditioning water ingress prevention control method provided by an embodiment of the present invention;

[0043] Figure 2 It is a structural block diagram of a vehicle air conditioning water ingress prevention control system provided by an embodiment of the present invention;

[0044] Figure 3 This is a schematic diagram of an air-intake structure of an air conditioner to which the present invention is applied;

[0045] Figure 4 It is a schematic diagram of an electronic device provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0046] Below through Figure 1 to Figure 4 And by enumerating some optional embodiments of the present invention, the technical scheme of the present invention (including the preferred technical scheme) is further described in detail. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0047] Example 1

[0048] The embodiment of the present invention provides a vehicle air conditioner water ingress prevention control method, which is used for the vehicle air conditioner air inlet duct water ingress prevention control, wherein the air conditioner air inlet duct can separate gas and liquid and has a drainage structure such as Figure 3 shown.

[0049] See also Figure 1 , the method comprises the following steps:

[0050] Step S101: data collection step, collecting the current rainfall, current air supply volume and current internal and external circulation ratio.

[0051] Specifically, the current rainfall is collected through the rain sensor, the current air supply volume is determined through the blower gear information, and the current internal and external circulation ratio is obtained through the air-conditioning controller.

[0052] In some optional embodiments of the present invention, the current air supply volume is represented by collecting the air volume gear information of the blower.

[0053] Step S102: a rainfall comparison step, comparing the current rainfall with a preset critical rainfall.

[0054] The preset critical rainfall can be obtained through a rain test, and the rainfall is divided into multiple intervals, each of which corresponds to a corresponding relationship between air volume and internal circulation ratio. For example, the rainfall can be divided into three intervals: light rain (0-2mm / min), moderate rain (2-5mm / min) and heavy rain (>5mm / min), and each interval corresponds to an air volume-internal circulation ratio MAP.

[0055] Step S103: target ratio determination step. When the current rainfall is less than or equal to the critical rainfall, the current internal-external circulation ratio is maintained; when the current rainfall is greater than the critical rainfall, the target internal-external circulation ratio is determined based on the current air supply volume and the preset air volume-internal circulation ratio MAP correspondence.

[0056] Specifically, when the rainfall is greater than the critical rainfall, the corresponding internal circulation ratio is searched in the preset air volume-internal circulation ratio MAP according to the current air supply volume, and the internal circulation ratio is used as the target internal and external circulation ratio.

[0057] Step S104: a ratio comparison step, comparing the target internal-external circulation ratio with the current internal-external circulation ratio.

[0058] Step S105: Ratio adjustment step. When the target internal-external circulation ratio is less than or equal to the current internal-external circulation ratio, the current internal-external circulation ratio is maintained; when the target internal-external circulation ratio is greater than the current internal-external circulation ratio, the internal-external circulation ratio is adjusted to the target internal-external circulation ratio.

[0059] Through the above steps, the internal and external circulation ratio can be dynamically adjusted according to the current rainfall and air supply volume, effectively preventing rainwater from entering the car.

[0060] In this embodiment, the preset air volume-internal circulation ratio MAP correspondence relationship can be obtained by the following steps:

[0061] 1. Establish a three-dimensional model of the vehicle air conditioning air intake duct;

[0062] 2. Through three-dimensional flow field simulation, determine the velocity field and pressure field in the air duct under different air volumes, and identify the intake air volume with risks;

[0063] 3. By opening different proportions of internal circulation to release pressure, reduce the wind speed and pressure in the air intake duct, record the proportion of internal circulation, and form a preliminary corresponding relationship between air volume and internal circulation proportion;

[0064] 4. Carry out a water spray test on the whole vehicle to verify and correct the corresponding relationship between the air volume and the internal circulation ratio to form an air volume-internal circulation ratio MAP.

[0065] In addition, considering that the vehicle may have different postures during driving (such as forward, backward, left, right, etc.), this embodiment also obtains the corresponding relationship between air volume and internal circulation ratio under different body postures, and determines the corresponding relationship between air volume and internal circulation ratio with the highest value of internal circulation ratio under the same air supply volume to form air volume-internal circulation ratio MAP. In this way, it can ensure that water ingress can be effectively prevented in various postures.

[0066] Table 1 Air volume corresponding to rainfall a mm / min - internal circulation ratio MAP

[0067]

[0068] The table shows an example of an air volume-internal circulation ratio MAP. In this example, the rows represent the blower gears (corresponding to different air volumes), the columns represent different vehicle postures, and the values ​​in the table represent the internal circulation ratios. It can be seen that as the air volume increases, the internal circulation ratio also increases, because a larger air volume increases the risk of water ingress. At the same time, the internal circulation ratios in different postures are also different. For example, in the backward and right leaning states, the internal circulation ratio is higher because it is easier to get water in these postures. The cell value of the "target" in the last row is the maximum value in the same column, and the "target" row is used to control the internal and external circulation ratios for the air volume-internal circulation ratio MAP.

[0069] Example 2

[0070] Based on Example 1, this example also considers the influence of ambient temperature on air conditioning control. Specifically, the method further includes the following steps:

[0071] 1. Collect the ambient temperature outside the vehicle;

[0072] 2. Find the internal and external circulation ratio under the corresponding ambient temperature and load value according to the preset temperature load-internal circulation table;

[0073] 3. The maximum value of the internal circulation ratio between the above internal circulation ratio and the internal circulation ratio in the air volume-internal circulation ratio MAP is determined as the target internal circulation ratio.

[0074] 4. The preset temperature load-internal circulation table is formed by combining the vehicle thermal management control strategy, conducting comprehensive vehicle road test verification, and ring model test verification. This can prevent water ingress while taking into account the cooling and heating effects and energy consumption of the air-conditioning system.

[0075] Table 2 Temperature load of a certain type of air duct - internal circulation table

[0076]

[0077] Table 2 shows an example of a temperature load-internal circulation table. In this example, the rows represent the load values ​​(which can be understood as the working intensity of the air conditioning system), the columns represent the ambient temperature, and the values ​​in the table represent the internal circulation ratio. It can be seen that under extremely low and high temperature conditions, the internal circulation ratio is higher, which is to improve the heating or cooling efficiency of the air conditioning system. In the moderate temperature range, the internal circulation ratio is lower, which is conducive to keeping the air in the car fresh.

[0078] Example 3

[0079] See also Figure 2 The embodiment of the present invention further provides a vehicle air conditioning water ingress prevention control system, comprising:

[0080] Data collection module 201, used to collect current rainfall, current air supply volume and current internal and external circulation ratio;

[0081] A rainfall comparison module 202 is used to compare the current rainfall with a preset critical rainfall;

[0082] The target ratio determination module 203 is used to maintain the current internal and external circulation ratio when the current rainfall is less than or equal to the critical rainfall; when the current rainfall is greater than the critical rainfall, determine the target internal and external circulation ratio according to the current air supply volume and the preset air volume-internal circulation ratio MAP correspondence relationship;

[0083] A ratio comparison module 204 is used to compare the target internal-external cycle ratio with the current internal-external cycle ratio;

[0084] The ratio adjustment module 205 is used to maintain the current internal and external circulation ratio when the target internal and external circulation ratio is less than or equal to the current internal and external circulation ratio; when the target internal and external circulation ratio is greater than the current internal and external circulation ratio, adjust the internal and external circulation ratio to the target internal and external circulation ratio.

[0085] In this embodiment, the data acquisition module 201 is also used to collect the ambient temperature outside the vehicle; the target ratio determination module 203 is also used to find the internal and external circulation ratio under the corresponding ambient temperature and load value according to the preset temperature load-internal circulation table, and determine the maximum value of the above internal and external circulation ratio and the internal circulation ratio in the air volume-internal circulation ratio MAP as the target internal and external circulation ratio.

[0086] Example 4

[0087] The embodiment of the present invention further provides a vehicle, the vehicle comprising the vehicle air conditioning water ingress prevention control system described in Embodiment 3. The vehicle may be a new energy vehicle such as a plug-in hybrid electric vehicle (PHEV), a range-extended electric vehicle (REEV), or a battery electric vehicle (BEV), or may be a traditional fuel vehicle.

[0088] Example 5

[0089] like Figure 4 As shown, the present invention provides an electronic device, including a processor 1, a communication interface 2, a memory 3 and a communication bus 4, wherein the processor 1, the communication interface 2, and the memory 3 communicate with each other through the communication bus 4; the memory 4 is used to store computer programs; the processor 1 is used to implement the control method described in Example 1 or Example 2 when executing the program stored in the memory 3.

[0090] The processor can be a general-purpose processor, including a central processing unit (CPU), a network processor (NP), etc.; it can also be a digital signal processor (DSP), an application specific integrated circuit (ASIC), a field programmable gate array (FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components.

[0091] The memory may include a random access memory (Random Access Memory, RAM), and may also include a non-volatile memory (Non-Volatile Memory, NVM), such as at least one disk memory.

[0092] The memory may be a volatile memory, such as a random-access memory (RAM); the memory may also be a non-volatile memory, such as a read-only memory, a flash memory, a hard disk drive (HDD) or a solid-state drive (SSD), or the memory is any other medium that can be used to carry or store the desired program code in the form of instructions or data structures and can be accessed by a computer, but is not limited thereto. The memory may be a combination of the above memories.

[0093] Example 6

[0094] The present invention provides a computer-readable storage medium, wherein the computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the control method described in Example 1 or Example 2 is performed.

[0095] The present invention can be implemented in whole or in part by software, hardware, firmware or any combination thereof. When implemented by software, it can be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, the process or function described in the embodiment of the present invention is generated in whole or in part. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. The computer instructions can be stored in a computer-readable storage medium, or transmitted from one computer-readable storage medium to another computer-readable storage medium. For example, the computer instructions can be transmitted from one website site, computer, server or data center to another website site, computer, server or data center by wired (e.g., coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) mode. The computer-readable storage medium can be any available medium that can be accessed by a computer or a data storage device such as a server or data center that includes one or more available media integrated. The available medium can be a magnetic medium (e.g., a floppy disk, a hard disk, a tape), an optical medium (e.g., a DVD), or a semiconductor medium (e.g., a solid-state hard disk SolidState Disk (SSD)), etc.

[0096] Through the above embodiments, the vehicle air conditioning water ingress prevention control method, system and vehicle provided by the present invention can effectively solve the water ingress problem caused by the design without water flow channel, while saving the front cabin space and reducing costs. The method takes into account multiple factors such as rainfall, air supply volume, vehicle body posture and ambient temperature, and realizes precise and intelligent control by dynamically adjusting the internal and external circulation ratio. In addition, the method has strong versatility and can adapt to different air intake duct solutions on different platforms, and has broad application prospects.

[0097] Those skilled in the art can clearly understand that for the convenience and simplicity of description, only the division of the above-mentioned functional units and modules is used as an example for illustration. In practical applications, the above-mentioned function allocation can be completed by different functional units and modules as needed, that is, the internal structure of the device can be divided into different functional units or modules to complete all or part of the functions described above. The functional units and modules in the embodiment can be integrated in a processing unit, or each unit can exist physically separately, or two or more units can be integrated in one unit. The above-mentioned integrated unit can be implemented in the form of hardware or in the form of software functional units. In addition, the specific names of the functional units and modules are only for the convenience of distinguishing each other, and are not used to limit the scope of protection of this application. The specific working process of the units and modules in the above-mentioned system can refer to the corresponding process in the aforementioned method embodiment, which will not be repeated here.

[0098] Those skilled in the art will readily appreciate that the above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, combinations, replacements, improvements, etc. made within the spirit and principles of the present invention are included within the protection scope of the present invention.

Claims

1. A vehicle air conditioner water ingress prevention control method, used for controlling water ingress into a vehicle air conditioner air inlet duct, wherein the air conditioner air inlet duct can separate gas and liquid and has a drainage structure; characterized in that: The control method comprises: Data collection steps: collecting current rainfall, current air supply volume and current internal and external circulation ratio; A rainfall comparison step, comparing the current rainfall with a preset critical rainfall; The target ratio determination step is to maintain the current internal and external circulation ratio when the current rainfall is less than or equal to the critical rainfall; and to determine the target internal and external circulation ratio according to the current air supply volume and the preset air volume-internal circulation ratio MAP correspondence relationship when the current rainfall is greater than the critical rainfall; A ratio comparison step, comparing the target inner-outer cycle ratio with the current inner-outer cycle ratio; The ratio adjustment step is as follows: when the target internal-external circulation ratio is less than or equal to the current internal-external circulation ratio, the current internal-external circulation ratio is maintained; when the target internal-external circulation ratio is greater than the current internal-external circulation ratio, the internal-external circulation ratio is adjusted to the target internal-external circulation ratio.

2. The vehicle air conditioner water ingress prevention control method according to claim 1, characterized in that: The preset air volume-internal circulation ratio MAP corresponding relationship is obtained by the following steps: Establish a three-dimensional model of the vehicle model's air conditioning air intake duct; Through three-dimensional flow field simulation, the velocity field and pressure field in the air duct under different air volumes are determined, and the intake air volume with risks is identified; By opening different proportions of internal circulation to release pressure, the wind speed and pressure in the air intake duct are reduced, and the proportion of internal circulation is recorded to form a preliminary corresponding relationship between air volume and internal circulation proportion; A whole vehicle water spray test is carried out to verify and correct the air volume-internal circulation ratio correspondence relationship to form an air volume-internal circulation ratio MAP.

3. The vehicle air conditioner water ingress prevention control method according to claim 2, characterized in that: The corresponding relationship between the air volume and the internal circulation ratio under different vehicle body postures is obtained, and the corresponding relationship between the air volume and the internal circulation ratio is determined by taking the highest value of the internal circulation ratio under the same air supply volume to form an air volume-internal circulation ratio MAP.

4. The vehicle air conditioner water ingress prevention control method according to claim 3, characterized in that: The critical rainfall is obtained through a rain test, and the rainfall is divided into multiple intervals, each interval corresponding to a corresponding relationship between wind volume and internal circulation ratio.

5. The vehicle air conditioner water ingress prevention control method according to claim 3, characterized in that: The air supply volume is determined by the blower gear position.

6. The vehicle air conditioner water ingress prevention control method according to any one of claims 1 to 5, characterized in that: The method also includes collecting the ambient temperature outside the vehicle, finding the internal and external circulation ratio under the corresponding ambient temperature and load value according to a preset temperature load-internal circulation table, and determining the maximum value of the above internal and external circulation ratio and the internal circulation ratio in the air volume-internal circulation ratio MAP as the target internal and external circulation ratio.

7. The vehicle air conditioner water ingress prevention control method according to claim 6, characterized in that: The preset temperature load-internal cycle table is formed by combining the thermal management control strategy of the whole vehicle with comprehensive road test verification and ring model test verification of the whole vehicle.

8. A vehicle air conditioning water ingress prevention control system, characterized in that: include: Data collection module, used to collect current rainfall, current air supply volume and current internal and external circulation ratio; A rainfall comparison module is used to compare the current rainfall with a preset critical rainfall; A target ratio determination module is used to maintain the current internal and external circulation ratio when the current rainfall is less than or equal to the critical rainfall; when the current rainfall is greater than the critical rainfall, determine the target internal and external circulation ratio according to the current air supply volume and the preset air volume-internal circulation ratio MAP correspondence relationship; A ratio comparison module, used to compare the target inner-outer cycle ratio with the current inner-outer cycle ratio; A ratio adjustment module, used to maintain the current internal and external circulation ratio when the target internal and external circulation ratio is less than or equal to the current internal and external circulation ratio; When the target internal-external circulation ratio is greater than the current internal-external circulation ratio, the internal-external circulation ratio is adjusted to the target internal-external circulation ratio.

9. The vehicle air conditioning water ingress prevention control system according to claim 8, characterized in that: The data acquisition module is also used to collect the ambient temperature outside the vehicle; the target ratio determination module is also used to find the internal and external circulation ratio under the corresponding ambient temperature and load value according to the preset temperature load-internal circulation table, and determine the maximum value of the above internal and external circulation ratio and the internal circulation ratio in the air volume-internal circulation ratio MAP as the target internal and external circulation ratio.

10. A vehicle, comprising the vehicle air-conditioning water ingress prevention control system according to claim 8 or 9.

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