Test method for simulating condensate water of air conditioner of whole vehicle

Abstract

The invention provides a test method for simulating condensate water of a whole vehicle air conditioner, and the method comprises the steps: placing a vehicle in an environment chamber, opening the environment chamber, and enabling the environment chamber to reach a preset temperature and a preset relative humidity; then, after an air conditioner of the vehicle is set to be in a first preset working condition and operates in the environment chamber for a first preset duration, the condensate water condition of a condensation area of the vehicle is checked, and a result is recorded; then, after the air conditioner keeps a first preset working condition and operates in the environment chamber for a second preset duration, the condensate water condition of the condensation area is checked, and a result is recorded; and finally, after the air conditioner of the vehicle is set to be in the second preset working condition and operates in the environment chamber for a third preset duration, the condensate water condition of the condensation area is checked, and a result is recorded. The test method is perfected, the test process and the verification mode are effectively controlled, the deviation of the simulation test result is reduced, and whether the condensate water condition of the vehicle meets the actual requirement or not can be accurately evaluated.

Description

Technical Field

[0001] The invention relates to the technical field of automobile air-conditioning system testing, and in particular to a test method for simulating condensed water of an entire vehicle air-conditioning system. Background Art

[0002] At present, most cars are equipped with air conditioning systems to adjust the internal temperature of the car and ensure a comfortable riding environment for the driver and passengers. The air conditioner will produce low-temperature condensed water during operation. Condensed water refers to liquid water formed by the condensation process of water vapor (i.e. gaseous water). When the surface temperature of the air conditioning evaporator and the air duct is lower than the dew point temperature of the intake air flow, water vapor will condense on the surface of the evaporator and the air duct, thereby producing condensed water.

[0003] Air conditioning condensation water generated in condensation areas such as the air conditioning evaporator box and the air duct surface may drip onto electrical components and wiring harness connectors, which may easily cause failure of the electrical components and wiring harness connectors, and in severe cases may even lead to driving safety issues. Therefore, by simulating a high temperature and high humidity environment through testing, the generation of condensation water is accelerated, which is of great help in verifying the safety and reliability of electrical components and wiring harness connectors in the air conditioning box and air duct related areas under such conditions. This test can achieve the test environment requirements through an environmental chamber, but the existing test has not formed a complete test method, and cannot effectively control the test process and test verification method, resulting in deviations in the simulation test results, and cannot accurately evaluate whether it meets actual needs. Summary of the invention

[0004] The test method for simulating vehicle air conditioning condensation water provided in the present application is intended to solve the above-mentioned technical problems in the prior art.

[0005] In order to solve the above technical problems, a technical solution adopted in this application is to provide a test method for simulating condensation water of vehicle air conditioner, including:

[0006] Placing the vehicle in an environmental chamber and opening the environmental chamber to allow the environmental chamber to reach a preset temperature and a preset relative humidity;

[0007] After setting the air conditioner of the vehicle to a first preset operating condition and running the air conditioner in the environmental chamber for a first preset time, checking the condensation water condition of the condensation area of ​​the vehicle and recording the result;

[0008] After the air conditioner is maintained at a first preset operating condition and operates in the environmental chamber for a second preset time, the condensed water condition of the condensation zone is checked and the result is recorded;

[0009] After setting the air conditioner of the vehicle to a second preset operating condition and running it in the environmental chamber for a third preset time, checking the condensed water condition of the condensation area and recording the result;

[0010] The condensation area includes the surface of the air conditioning box, the surface of the air duct, electrical components and wiring harness connectors.

[0011] In a specific embodiment, the step of checking the condensation water condition of the condensation zone and recording the result includes:

[0012] Conduct a static inspection on the condensation water condition in the condensation zone and record the results;

[0013] The vehicle is road tested and the condensation water condition in the condensation area is dynamically checked and the results are recorded.

[0014] In a specific embodiment, the step of statically inspecting the condensation water condition of the condensation zone and recording the result includes:

[0015] Checking the condensation water generation on the surface of the air conditioning box and the surface of the air duct and recording the results;

[0016] The condensation water dripping condition of the electrical components and wiring harness connectors is checked and the amount of condensation water dripping is recorded.

[0017] In a specific embodiment, the step of conducting a road test on the vehicle and dynamically checking the condensation water condition of the condensation zone and recording the results comprises:

[0018] The vehicle is subjected to road tests on a runway in sequence of rapid acceleration, rapid deceleration, sharp left / right turns, bumpy roads, and twisted roads;

[0019] The condensation water dripping condition of the electrical components and wiring harness connectors is checked and the amount of condensation water dripping is recorded.

[0020] In a specific embodiment, it also includes:

[0021] Check whether the electrical components and wiring harness connectors in the condensation area have any functional loss;

[0022] The condensation water dripping situation in the condensation area except the electrical components and the wiring harness connector is recorded.

[0023] In a specific embodiment, the step of placing the vehicle in the environmental chamber and opening the environmental chamber to allow the environmental chamber to reach a preset temperature and a preset relative humidity includes:

[0024] The vehicle is left stationary at the preset temperature and the preset relative humidity for a fourth preset time period; wherein the preset temperature is 37° C.-39° C., the preset relative humidity is greater than or equal to 90%, and the fourth preset time period is greater than or equal to 2 hours.

[0025] In a specific embodiment, the first preset working condition includes setting the operation mode of the air conditioner to the cooling mode and the air conditioner temperature to the low temperature gear, setting the air outlet mode of the air conditioner to the foot-blowing and face-blowing mode and the air volume to the 2nd gear, and setting the air circulation mode of the air conditioner to the internal circulation mode;

[0026] The second preset working condition includes setting the operation mode of the air conditioner to the cooling mode and the air conditioner temperature to the low temperature gear, setting the air outlet mode of the air conditioner to the foot blowing defog mode and the air volume to the 2nd gear, and setting the air circulation mode of the air conditioner to the internal circulation mode.

[0027] In a specific embodiment, the first preset time length is 0.5h-1.5h; the second preset time length is 1.5h-2.5h; and the third preset time length is 0.5h-1.5h.

[0028] In a specific embodiment, the step of checking the condensation water condition of the condensation area of ​​the vehicle and recording the result specifically includes:

[0029] For some electrical components and wiring harness connectors with a waterproof level lower than the preset level, the preset requirement is that there is no condensation water dripping;

[0030] For some of the electrical components and wiring harness connectors whose waterproof level is greater than or equal to the preset level, the preset requirement is that the amount of condensed water dripping is less than or equal to 50 ml;

[0031] Among them, the preset level is IPX2.

[0032] In a specific embodiment, for some of the electrical components and wiring harness connectors having a waterproof level greater than or equal to the preset level, the preset requirement is that there is no condensation water dripping.

[0033] Beneficial effects of the embodiments of the present application: Different from the prior art, the present application provides a test method for simulating condensation water of the air conditioner of a whole vehicle, comprising: placing the vehicle in an environmental chamber and turning on the environmental chamber to make the environmental chamber reach a preset temperature and a preset relative humidity; then setting the air conditioner of the vehicle to a first preset working condition and running it in the environmental chamber for a first preset time, checking the condensation water situation of the condensation zone of the vehicle and recording the result; then keeping the air conditioner in the first preset working condition and running it in the environmental chamber for a second preset time, checking the condensation water situation of the condensation zone and recording the result; finally setting the air conditioner of the vehicle to a second preset working condition and running it in the environmental chamber for a third preset time, checking the condensation water situation of the condensation zone and recording the result; wherein the condensation zone includes the surface of the air conditioner box, the surface of the air duct, the electrical components and the wiring harness connector. By sequentially performing condensation water tests under the first preset working condition and the second preset working condition, and dividing the test under the first preset working condition into two stages, and then checking the condensation water situation of the condensation zone for multiple times and recording the result, the test method is improved, the test process and verification method are effectively controlled, the deviation of the simulation test results is reduced, and the condensation water situation of the vehicle can be accurately evaluated to see whether it meets the actual needs. In this way, through rigorous condensation water testing, potential problems in the design of air-conditioning systems can be discovered and improved, thereby improving the overall quality of the product and user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 A schematic flow chart of a test method for simulating condensed water from vehicle air conditioners provided in one embodiment of the present application;

[0035] Figure 2 for Figure 1 The schematic diagram of the process of step S2 is shown;

[0036] Figure 3 for Figure 2 The schematic diagram of the process of step S21 is shown;

[0037] Figure 4 for Figure 2 The flowchart of step S22 is shown. DETAILED DESCRIPTION

[0038] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0039] The terms "first", "second", "third" in this application are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features. Thus, the features defined as "first", "second", "third" can expressly or implicitly include at least one of the features. In the description of this application, the meaning of "multiple" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined. In the embodiments of this application, all directional indications (such as up, down, left, right, front, back...) are only used to explain the relative position relationship, movement, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication also changes accordingly. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device comprising a series of steps or units is not limited to the steps or units listed, but optionally also includes steps or units that are not listed, or optionally also includes other steps or units inherent to these processes, methods, products or devices.

[0040] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0041] With the continuous development of automobile technology, the performance and reliability of vehicle air conditioning systems have become increasingly important. Especially in high temperature and high humidity environments, air conditioning systems will produce a large amount of condensation water. If the condensation water is not managed properly, it may cause condensation water to accumulate in the car, affecting the comfort of passengers, and may even enter the vehicle's electrical system, causing problems such as short circuits or corrosion. Therefore, it is of great significance to develop an effective condensation water test method to evaluate the condensation water discharge performance of the air conditioning system to ensure that it can work properly under various environmental conditions. However, the existing condensation water test methods usually have the following shortcomings: the test conditions are not realistic enough to accurately simulate the environment of the vehicle in actual use; there is a lack of accurate measurement of the amount of condensation water during the test; and there is insufficient evaluation of the impact of condensation water on electrical components and wiring harness connectors, especially for electrical components with different waterproof levels.

[0042] To this end, the present application provides a test method for simulating the condensation water of the vehicle's air conditioning, improves the test method, effectively controls the test process and verification method, accurately simulates the environment of the vehicle in actual use, and reduces the deviation of the simulation test results; by measuring the amount of condensation water and evaluating the impact of condensation water on electrical components and wiring harness connectors, it is possible to accurately evaluate whether the vehicle's condensation water situation meets actual needs.

[0043] The present application is described in detail below with reference to the accompanying drawings and embodiments.

[0044] See also Figure 1 , Figure 1 A flow chart of a test method for simulating condensation water of vehicle air conditioning provided in one embodiment of the present application; the present application provides a test method for simulating condensation water of vehicle air conditioning, which can be used to evaluate the condensation water discharge performance of the vehicle's air conditioning system under different environmental conditions and ensure that the condensation water does not have adverse effects on passengers or vehicle electronic equipment in the vehicle.

[0045] In the specific implementation process, the vehicle can be pre-treated before the condensation test to clean the test vehicle and ensure that there is no residual water or other liquid in the vehicle; and the drainage pipes of the air conditioning system are checked to ensure that they are unobstructed. Then install a condensation collection device at the drainage outlet at the bottom of the vehicle to ensure that all discharged condensation can be accurately collected. At the same time, cameras and humidity sensors are installed in key areas such as the floor, dashboard, and under the seats in the vehicle to monitor whether there is condensation leakage in real time.

[0046] Specifically, the steps of the test method for simulating vehicle air conditioning condensation water may include:

[0047] Step S1: placing the vehicle in an environmental chamber and opening the environmental chamber to allow the environmental chamber to reach a preset temperature and a preset relative humidity.

[0048] The environmental chamber is used to simulate different temperature and humidity conditions. Specifically, the environmental chamber should have the ability to accurately control temperature and humidity, and provide enough space to accommodate the entire vehicle so that the test can be carried out in a controlled environment to ensure the consistency and repeatability of the test conditions. By using the environmental chamber, the condensation water generation of the vehicle in a high temperature and high humidity environment can be truly simulated to ensure that the test results have a high degree of credibility.

[0049] Specifically, the preset temperature can be 37℃-39℃, and the preset relative humidity can be greater than or equal to 90%; in order to maximize the condensed water generated in the test, and better verify the safety and reliability of the electrical components and wiring harness connectors in the air conditioning box and air conditioning duct related areas under such conditions. Specifically, the preset temperature can be any one of 37℃, 37.5℃, 38℃, 38.5℃ or 39℃; the preset relative humidity can be any one of 90%, 92%, 94%, 96% or 98%.

[0050] Preferably, in a specific implementation process, the vehicle may be left stationary at a preset temperature and a preset relative humidity for a fourth preset time period; wherein the fourth preset time period is greater than or equal to 2 hours.

[0051] It is understandable that leaving the vehicle stationary for a period of time in a preset environment can simulate the actual usage scenario, ensure that the test conditions are closer to the situation after the vehicle is parked for a long time in a high temperature and high humidity environment; and ensure that the temperature and humidity inside the vehicle reach a stable state, avoiding fluctuations in the environmental chamber and the internal conditions of the vehicle affecting the test results; thereby reducing test errors, ensuring the stability and consistency of test conditions, and improving the repeatability of the test. Specifically, the fourth preset time length can be any of 2h, 2.5h, 3h, 3.5h or 4h.

[0052] In the specific implementation process, the four door glasses can be lowered to the lowest position and the sunroof can be opened to allow the temperature and humidity inside the vehicle to reach a stable state as soon as possible; the vehicle's heating and cooling box, on-board refrigerator and rear air conditioner can also be turned on to maximize the condensation water generated during the test, and better verify the safety and reliability of the air conditioner box and the electrical components and wiring harness connectors in the air duct-related areas under such conditions. Among them, the rear air conditioner can be set to cooling mode and the air conditioner temperature can be set to low temperature, and the air outlet mode of the air conditioner can be set to foot-blowing mode and the air volume can be set to level 2.

[0053] Step S2: After the air conditioner of the vehicle is set to a first preset operating condition and runs in the environmental chamber for a first preset time, the condensation water condition of the condensation area of ​​the vehicle is checked and the result is recorded.

[0054] During the specific implementation process, setting the air conditioner to the first preset operating condition can specifically include: setting the air conditioner operating mode to cooling mode and setting the air conditioner temperature to low temperature to ensure that the amount of condensed water generated in the test reaches the maximum; setting the air outlet mode of the air conditioner to foot-blowing and face-blowing mode and setting the air volume to level 2, and setting the air circulation mode of the air conditioner to internal circulation mode to simulate the actual settings of the vehicle air conditioner when used in summer.

[0055] After the air conditioner is operated for a first preset time under a first preset working condition, the condensation water condition in the condensation area of ​​the vehicle is checked; wherein the first preset time can be 0.5h-1.5h, to ensure that the amount of condensation water generated is large enough to fully test the performance of the drainage system. Specifically, the first preset time can be any one of 0.5h, 1.0h or 1.5h. Preferably, the first preset time can be 1.0h.

[0056] See also Figure 2 , Figure 2 for Figure 1 The flowchart of step S2 is shown as follows; specifically, step S2 includes:

[0057] Step S21: Perform a static inspection on the condensation water condition in the condensation zone and record the results.

[0058] The condensation area may include the surface of the air conditioner, the surface of the air duct, electrical components and wiring harness connectors. Figure 3 , Figure 3 for Figure 2 The flowchart of step S21 is shown as follows; step S21 may specifically include:

[0059] Step S211: Check the condensation water generation on the surface of the air conditioning box and the air duct surface and record the results.

[0060] Specifically, the generation of condensation water on the surface of the air-conditioning box and the air duct can be determined through appearance inspection, and photos or videos can be taken to record the specific location of condensation water accumulation. Among them, the appearance inspection can include visual inspection and touch inspection. Visual inspection refers to observing the parts of the outer surface of the air-conditioning box that are in contact with the air (such as air inlets, air outlets, evaporator, etc.), as well as the parts and elbows where the air duct is connected to the air-conditioning box, paying attention to whether there is obvious accumulation or dripping of condensation water and taking photos or recording videos. Touch inspection refers to gently touching the surface of the air-conditioning box and the air duct with your fingers to feel whether there is a sense of moisture; if a moist area is found, mark the location and take photos or record videos.

[0061] At the same time, install condensate collection devices under the air conditioner box and the air duct and at the condensate discharge port to ensure that all condensate dripping from the surface of the air conditioner box and the air duct can be collected, the total amount of condensate can be recorded, and the condensate generation rate per unit time can be calculated. In this way, the distribution and generation of condensate can be fully understood.

[0062] Step S212: Check the dripping of condensed water on the electrical components and wiring harness connectors and record the dripping amount of condensed water.

[0063] It is understandable that electrical components and wiring harness connectors are important components to ensure the normal operation of the air conditioning system. If the condensed water generated on the surface of the air conditioning box and the air duct drips onto these sensitive components, it may cause short circuits, corrosion or other functional failures. Therefore, it is necessary to check whether the amount of condensed water dripping on the electrical components and wiring harness connectors meets the requirements.

[0064] Specifically, the dripping of condensed water on electrical components and wiring harness connectors can be determined by visual inspection. Specifically, visual inspection can be used to observe whether there is dripping condensed water on the parts of the electrical components that are in contact with the air (such as the housing, connector, heat sink, etc.), the connector part of the wiring harness connector, and the bends of the wiring harness; and touch inspection can be used to check the wet areas of the electrical components and wiring harness connectors, and take photos or record videos.

[0065] At the same time, install a small-capacity condensation water collection device under the electrical components and wiring harness connectors, and wipe the surface of the electrical components and wiring harness connectors with absorbent paper to ensure that all condensation water dripping on the electrical components and wiring harness connectors can be collected, the total amount of condensation water is recorded, and the condensation water generation rate per unit time is calculated. In this way, the distribution and dripping amount of condensation water can be fully understood.

[0066] Specifically, for electrical components and wiring harness connectors with different waterproof levels, the requirements for the amount of condensed water dripping are different; the amount of condensed water dripping is deemed qualified if it meets the preset requirements, otherwise it is deemed unqualified. Among them, for some electrical components and wiring harness connectors with a waterproof level less than the preset level, the preset requirement is no condensed water dripping; for some electrical components and wiring harness connectors with a waterproof level greater than or equal to the preset level, the preset requirement is that the amount of condensed water dripping is less than or equal to 50 ml. Among them, the preset level is IPX2; wherein "IP" is the protection level (Ingress Protection, IP), "X" is the protection level against solid foreign matter (such as dust, particles, etc.), and "2" is the protection level against liquids (such as water).

[0067] That is to say, for some electrical components and wiring harness connectors with a waterproof level less than 2, it is required that no condensed water drips on their surface; and for some electrical components and wiring harness connectors with a waterproof level greater than or equal to 2, the amount of condensed water dripping on their surface is required to be less than or equal to 50 ml. Specifically, the amount of condensed water dripping can be any value among 10 ml, 20 ml, 30 ml, 40 ml or 50 ml.

[0068] Preferably, for some electrical components and wiring harness connectors having a waterproof level greater than or equal to a preset level, the preset requirement is that there is no condensation water dripping.

[0069] In a specific implementation process, after step S212, the following step may further include: checking whether the electrical components and wiring harness connectors in the condensation area have any functional loss.

[0070] Specifically, you can use a multimeter or other electrical testing equipment to check the electrical performance of electrical components and wiring harness connectors; ensure that their resistance, capacitance, signal transmission and other parameters remain consistent before and after the test and do not change significantly. In this way, you can determine whether condensed water has caused short circuits, corrosion and other possible functional losses in electrical components and wiring harness connectors.

[0071] In a specific implementation process, after step S212, the method may further include: recording the condensation water dripping conditions in the condensation area except for the electrical components and the wiring harness connectors.

[0072] Specifically, air conditioning condensation dripping problems in areas where there is no risk of electrical function but there is a risk of customer complaints are recorded as problems; for example, areas such as floors and carpets, doors and windows, seats and seat belts.

[0073] Step S22: Conduct a road test on the vehicle and dynamically check the condensation water condition in the condensation area and record the results.

[0074] In the specific implementation process, after the static inspection of the condensation water situation in the condensation area, the vehicle needs to be road tested to simulate the dynamic state of the vehicle under different driving conditions; then the condensation water situation in the condensation area is inspected to obtain the condensation water dripping situation when the vehicle is driving. Figure 4 , Figure 4 for Figure 2 The flowchart of step S22 is shown as follows; step S22 specifically includes:

[0075] Step S221: The vehicle is subjected to road tests on the runway in sequence including rapid acceleration, rapid deceleration, sharp left / right turns, bumpy roads, and twisted roads.

[0076] During the simulated driving process, the air conditioning system is kept running continuously to ensure that the amount of condensed water generated is large enough to fully test the performance of the drainage system. It is understandable that under various operating conditions such as sudden acceleration, sudden deceleration, sharp left / right turns, bumpy roads, twisted roads, etc., the air flow and temperature distribution inside the vehicle will be affected, which in turn affects the generation and discharge of condensed water. Under dynamic conditions, the flow and direction of condensed water may change, which may cause blockage or leakage in the drainage pipes; certain areas (such as doors, under seats, dashboards, etc.) may be more prone to condensed water accumulation under dynamic conditions; road tests can help identify these potential risk points and optimize the condensed water discharge path.

[0077] Step S222: Check the dripping of condensed water on the electrical components and wiring harness connectors and record the dripping amount of condensed water.

[0078] It is understandable that under dynamic conditions, the probability of condensed water dripping from the surface of the air conditioner box, the surface of the air duct or other parts onto the electrical components and wiring harness connectors may increase, increasing the risk of short circuit or corrosion. During the entire road test, the camera can be used to monitor in real time whether there is condensed water dripping on the electrical components and wiring harness connectors. The specific method for checking the condensed water dripping of the electrical components and wiring harness connectors after the road test and recording the amount of condensed water dripping is the same or similar to the method described in step S212. For details, please refer to step S212, which will not be repeated here.

[0079] Step S3: After the air conditioner is maintained at the first preset operating condition and operates in the environmental chamber for a second preset time, the condensation water condition in the condensation zone is checked and the result is recorded.

[0080] In the specific implementation process, the second preset time is 1.5h-2.5h; by extending the operation time of the air conditioner to further increase the amount of condensed water generated, the performance of the vehicle drainage system under extreme conditions can be tested. Specifically, the second preset time can be any one of 1.5h, 2.0h or 2.5h. Preferably, the first preset time can be 2.0h.

[0081] Specifically, after the air conditioner maintains the first preset operating condition and runs for the second preset time in the environmental chamber, the specific steps and methods for checking the condensation water condition in the condensation area and recording the results are the same or similar to the steps and methods of the above-mentioned steps S21 and S22. Please refer to steps S21 and S22 for details, which will not be repeated here.

[0082] Step S4: After the vehicle's air conditioner is set to the second preset operating condition and runs in the environmental chamber for a third preset time, the condensation water condition in the condensation area is checked and the result is recorded.

[0083] During the specific implementation process, setting the air conditioner to the second preset operating condition may specifically include: setting the air conditioner's operating mode to cooling mode and setting the air conditioner temperature to low temperature to ensure that the amount of condensed water generated in the test reaches the maximum; setting the air outlet mode of the air conditioner to foot blowing defog mode and setting the air volume to level 2, and setting the air circulation mode of the air conditioner to internal circulation mode to simulate the actual settings of the vehicle air conditioner when used in winter.

[0084] After the air conditioner is operated for a third preset time under the second preset working condition, the condensation water condition in the condensation area of ​​the vehicle is checked; wherein the third preset time is 0.5h-1.5h, to ensure that the amount of condensation water generated is large enough to fully test the performance of the drainage system. Specifically, the third preset time can be any one of 0.5h, 1.0h or 1.5h. Preferably, the third preset time can be 1.0h.

[0085] Specifically, after setting the vehicle's air conditioner to the second preset operating condition and running for a third preset time in the environmental chamber, the specific steps and methods for checking the condensation water condition in the condensation area and recording the results are the same or similar to the steps and methods of the above-mentioned steps S21 and S22. Please refer to steps S21 and S22 for details, and they will not be repeated here.

[0086] The present application provides a test method for simulating condensation water of the whole vehicle air conditioner, including: placing the vehicle in an environmental chamber and turning on the environmental chamber to make the environmental chamber reach a preset temperature and a preset relative humidity; then setting the vehicle's air conditioner to a first preset working condition and running it in the environmental chamber for a first preset time, checking the condensation water situation in the condensation zone of the vehicle and recording the result; then keeping the air conditioner in the first preset working condition and running it in the environmental chamber for a second preset time, checking the condensation water situation in the condensation zone and recording the result; finally setting the vehicle's air conditioner to a second preset working condition and running it in the environmental chamber for a third preset time, checking the condensation water situation in the condensation zone and recording the result; wherein the condensation zone includes the surface of the air conditioner box, the surface of the air duct, the electrical components and the wiring harness connector. By sequentially performing condensation water tests under the first preset working condition and the second preset working condition, and dividing the test under the first preset working condition into two stages, and then checking the condensation water situation in the condensation zone for multiple times and recording the result, the test method is improved, the test process and verification method are effectively controlled, the deviation of the simulation test results is reduced, and it is possible to accurately evaluate whether the condensation water situation of the vehicle meets the actual needs. In this way, through rigorous condensation water testing, potential problems in the design of air-conditioning systems can be discovered and improved, thereby improving the overall quality of the product and user experience.

[0087] The above description is only an implementation method of the present application, and does not limit the patent scope of the present application. Any equivalent structure or equivalent process transformation made using the contents of the present application specification and drawings, or directly or indirectly used in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. A test method for simulating condensed water from vehicle air conditioning, characterized in that: include: Placing the vehicle in an environmental chamber and opening the environmental chamber to allow the environmental chamber to reach a preset temperature and a preset relative humidity; After setting the air conditioner of the vehicle to a first preset operating condition and running the air conditioner in the environmental chamber for a first preset time, checking the condensation water condition of the condensation area of ​​the vehicle and recording the result; After the air conditioner is maintained at a first preset operating condition and operates in the environmental chamber for a second preset time, the condensed water condition of the condensation zone is checked and the result is recorded; After setting the air conditioner of the vehicle to a second preset operating condition and running it in the environmental chamber for a third preset time, checking the condensed water condition of the condensation area and recording the result; The condensation area includes the surface of the air conditioning box, the surface of the air duct, electrical components and wiring harness connectors.

2. The test method for simulating vehicle air conditioning condensation water according to claim 1, characterized in that: The step of checking the condensed water condition in the condensation zone and recording the result comprises: Conduct a static inspection on the condensation water condition in the condensation zone and record the results; The vehicle is road tested and the condensation water condition in the condensation area is dynamically checked and the results are recorded.

3. The test method for simulating vehicle air conditioning condensation water according to claim 2, characterized in that: The step of statically inspecting the condensed water condition in the condensation zone and recording the result comprises: Checking the condensation water generation on the surface of the air conditioning box and the surface of the air duct and recording the results; The condensation water dripping condition of the electrical components and wiring harness connectors is checked and the amount of condensation water dripping is recorded.

4. The test method for simulating vehicle air conditioning condensation water according to claim 2, characterized in that: The steps of conducting a road test on the vehicle and dynamically checking the condensed water condition of the condensation area and recording the results include: The vehicle is subjected to road tests on a runway in sequence of rapid acceleration, rapid deceleration, sharp left / right turns, bumpy roads, and twisted roads; The condensation water dripping condition of the electrical components and wiring harness connectors is checked and the amount of condensation water dripping is recorded.

5. The test method for simulating vehicle air conditioning condensation water according to claim 1, characterized in that: Also includes: Check whether the electrical components and wiring harness connectors in the condensation area have any functional loss; The condensation water dripping situation in the condensation area except the electrical components and the wiring harness connector is recorded.

6. The test method for simulating vehicle air conditioning condensation water according to claim 1, characterized in that: The step of placing the vehicle in the environmental chamber and opening the environmental chamber to make the environmental chamber reach a preset temperature and a preset relative humidity comprises: The vehicle is left stationary at the preset temperature and the preset relative humidity for a fourth preset time period; wherein the preset temperature is 37° C.-39° C., the preset relative humidity is greater than or equal to 90%, and the fourth preset time period is greater than or equal to 2 hours.

7. The test method for simulating vehicle air conditioning condensation water according to claim 1, characterized in that: The first preset working condition includes setting the operation mode of the air conditioner to the cooling mode and the air conditioner temperature to the low temperature gear, setting the air outlet mode of the air conditioner to the foot-blowing and face-blowing mode and the air volume to the 2nd gear, and setting the air circulation mode of the air conditioner to the internal circulation mode; The second preset working condition includes setting the operation mode of the air conditioner to the cooling mode and the air conditioner temperature to the low temperature gear, setting the air outlet mode of the air conditioner to the foot blowing defog mode and the air volume to the 2nd gear, and setting the air circulation mode of the air conditioner to the internal circulation mode.

8. The test method for simulating vehicle air conditioning condensation water according to claim 7, characterized in that: The first preset time length is 0.5h-1.5h; the second preset time length is 1.5h-2.5h; and the third preset time length is 0.5h-1.5h.

9. The test method for simulating vehicle air conditioning condensation water according to any one of claims 1 to 8, characterized in that: The step of checking the condensation water condition of the condensation area of ​​the vehicle and recording the result specifically includes: For some electrical components and wiring harness connectors with a waterproof level lower than the preset level, the preset requirement is that there is no condensation water dripping; For some of the electrical components and wiring harness connectors whose waterproof level is greater than or equal to the preset level, the preset requirement is that the amount of condensed water dripping is less than or equal to 50 ml; Among them, the preset level is IPX2.

10. The test method for simulating vehicle air conditioning condensation water according to claim 9, characterized in that: For some of the electrical components and wiring harness connectors having a waterproof level greater than or equal to the preset level, the preset requirement is that there is no condensation water dripping.

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