A method for testing an electric vehicle door device for ice breaking
Patent Information
- Application Number
- CN202610709197.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2026-05-21
- Publication Date
- 2026-09-29
AI Technical Summary
[0006]（1）目前淋雨的环境不定，可能会再夏天开展，淋雨后车辆转移至模拟环境仓，在这期间车辆大部分水迹都可能会蒸发，验证的工况和方案与实际的冬季低温不符合；
（1）通过本发明思路方式，建立了车辆面向用户的一种冬季结冰影响车辆电动功能无法正常使用的模拟验证和评价方法；
Smart Images
Figure CN122835752A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of vehicle environmental adaptability testing technology, and in particular to an ice-breaking test method for electric vehicle door devices. Background Technology
[0002] As electric and intelligent vehicles become increasingly platform-based and widespread, user-friendly, intelligent electric functions that reduce discomfort during operation are becoming more and more common, such as electric doors and electric front and rear tailgates.
[0003] As the application scope of vehicles expands, and different indoor and outdoor environments emerge—from the high temperatures and humidity of the south to the icy conditions of the north—various electric functions must reliably cope with various, even extreme, operating conditions. Therefore, simulation verification is essential during vehicle development. Icing in low-temperature environments and icy rain in northern regions can easily cause the failure of various electric functions, especially leading to malfunctions in the vehicle's door and hood systems, which are most directly relevant to users. For example, in winter, if a vehicle is parked until the early morning, the doors may freeze shut and become impossible to open, or a vehicle may be covered in a thick or thin layer of ice during icy rain, making it impossible to enter.
[0004] Currently, there are no unified standards or solutions in the industry. Each car manufacturer conducts verification according to its own methods, which usually involves first raining the entire vehicle and then storing it in a low-temperature chamber. Most of the time, the low temperature environment causes water that entered the gaps and rubber strips of various doors during the rain to freeze and bond the doors. Then, the doors are operated or remotely controlled in the low-temperature environment to verify whether the electric functions can properly break the ice and open or fully open the doors.
[0005] However, the plan at the time had the following drawbacks:
[0006] (1) The current rain environment is uncertain and may be carried out in the summer. After the rain, the vehicle is transferred to the simulated environment chamber. During this period, most of the water on the vehicle may evaporate. The working conditions and schemes verified do not match the actual low temperature in winter. (2) The environmental chamber is usually opened at room temperature. Before opening, the vehicle enters the chamber. Because the environmental chamber is large and the cooling rate is slow, the water in the vehicle during the rain will evaporate and be carried away during the cooling process, reducing the effectiveness of the verification. (3) At the same time, during the cooling process in the environmental chamber, if the cooling circulation wind speed is not too high, it will also take away a lot of moisture, reducing the effectiveness of the verification. Summary of the Invention
[0007] The purpose of this invention is to provide a method for testing the ice-breaking mechanism of an electric vehicle door device.
[0008] To achieve the above objectives, embodiments of the present invention provide an ice-breaking test method for electric vehicle door devices, comprising: Confirm that the operating status of the electric components and the status of the auxiliary energy of the vehicle under test meet the test requirements, and prepare test equipment with rain simulation and low temperature environment simulation functions; The rain simulation function is used to subject the test vehicle to all-round rain treatment in a normal temperature environment, so that the contact areas of the moving parts of the test vehicle are fully wetted. After being wetted, the vehicle to be tested is transferred to a pre-cooled low-temperature environment. During the cooling process and when a specific low-temperature threshold is reached, liquid water is sprayed onto the joint area of the moving parts to form a covering ice layer. After the ice layer forms and completes low-temperature storage, the electric functions of the vehicle under test are activated or mechanical operations are performed to verify the vehicle's ability to open under icy conditions.
[0009] Optionally, the step of using the rain simulation function to subject the test vehicle in a normal temperature environment to comprehensive rain treatment, so that the contact areas of the moving parts of the test vehicle are fully wetted, includes: Park the vehicle to be tested normally in the middle area of the rain equipment, turn on the rain equipment and use the rain mode to rain the vehicle to be tested for at least 30 minutes, or when the vehicle to be tested is an engine vehicle, ensure that the temperature of the engine compartment is basically the same as the ambient temperature. During the rain test, the rain area is controlled to completely cover the vehicle under test, ensuring that the test functional components such as the doors, front and rear hoods are completely covered by the rain equipment and the vehicle under test is fully wetted.
[0010] Optionally, ensuring that the perceived temperature of the engine compartment is substantially the same as the ambient temperature when the vehicle under test is an engine vehicle includes: When the summer high temperature is higher than The above process involves subjecting the fully humidified vehicle to a second rain shower. After the first rain shower, the equipment is restarted at a preset interval to conduct a second rain shower, ensuring that the vehicle is adequately humidified to counteract the evaporation of moisture caused by high temperatures, thus obtaining a humidified vehicle that meets the requirements of high-temperature operating conditions in summer.
[0011] Optionally, the step of transferring the wetted vehicle to a pre-cooled low-temperature environment, and spraying liquid water onto the joint area of the moving parts to form a covering ice layer during the cooling process and when a specific low-temperature threshold is reached, includes: Before the vehicle to be tested enters the environmental chamber, the environmental chamber equipment is turned on in advance to lower the ambient temperature inside the environmental chamber to a certain level. The following steps will be taken: After wetting, the test vehicle will be transferred to the environmental chamber. If the test vehicle is an engine vehicle, the engine will be avoided and the vehicle will be transferred by pushing it manually. If the test vehicle is an electric vehicle, it will be driven into the environmental chamber. The transfer time will not exceed 5 minutes. After the vehicle enters the cooling chamber, the maximum power cooling system is activated to reduce the temperature, and the airflow speed in the controlled environment chamber must not exceed [a certain value]. The vehicle under test was obtained during the cooling process.
[0012] Optionally, the step of spraying liquid water onto the joint area of the moving parts to form a covering ice layer during the cooling process and when a specific low temperature threshold is reached includes: When the environmental chamber cools down to The following steps involve spraying water around the perimeter of the verification component and the area where it connects to the vehicle body, ensuring the water temperature does not exceed [a certain level]. Simply spray the water onto the surface to form a stream of water; When the environmental chamber cools down to Then, use a spray bottle to spray water again around the area where the verification component connects to the vehicle body, ensuring the water temperature does not exceed [a certain level]. Simply spray water onto the surface to form a dotted water film, and you will get the vehicle under test with preliminary icing.
[0013] Optionally, after the spraying onto the surface to form a dotted water film, the method further includes: if verifying the thick ice-breaking mode, then... Continuously spray water in a circulating manner under the environment, and after freezing, spray water evenly again to maintain an ice layer thickness of no less than [amount missing]. Furthermore, the area covered by the ice layer must be greater than the edge of the moving parts' mating surface, extending by at least [a certain amount]. This yields a cover ice layer that meets the requirements of the thick ice breaking mode test.
[0014] Optionally, after the ice layer forms and cryogenic storage is completed, activating the electric function of the vehicle under test or performing mechanical operation to verify the vehicle's ability to open under icing conditions includes: After the ice layer forms, it is stored at a low temperature for at least 4 hours to achieve a deep simulation of the night's duration and to ensure the density of the ice to enhance its strength. Once the storage time is reached, the electric function is activated remotely to confirm whether the vehicle under test is moving and to achieve the ice-breaking function. If the vehicle under test has a device with mechanical operation function, use the correct operating method to open it, and verify whether it can be opened normally without taking any external objects.
[0015] Optionally, confirming whether the vehicle under test is in motion to achieve the ice-breaking function also includes: performing ice-breaking verification according to the normal operating method of the vehicle, without taking external force or violence to affect the normal use of its vehicle performance and function, or taking tools such as snowplows to assist in ice breaking to simulate user working conditions, and obtaining ice-breaking verification results.
[0016] Optionally, the test equipment equipped with rain simulation and low-temperature environment simulation functions includes: Prepare rain equipment capable of simulating heavy rain conditions with a water pressure of no less than [amount missing]. The nozzle angle includes and Or the angle is adjustable, and the flow rate is not less than... And the duration is adjustable; Prepare environmental chamber equipment capable of simulating low-temperature environments, with a low-temperature capacity not less than [specified value]. The cooling rate at low temperatures shall not be less than The circulating air speed is adjustable, and the minimum adjustment value must not exceed [the specified value]. ; Prepare a spray bottle that can adjust the liquid water flow rate to either a mist or droplets, and the flow rate of the bottle should be no less than [amount missing]. .
[0017] Optionally, after verifying the vehicle's ability to open under icy conditions, the method further includes: After the vehicle ice-breaking verification is completed, the vehicle power and movement mechanism are turned off and the vehicle is locked normally. The environmental chamber was heated to ambient temperature plus... Once the temperature stabilizes and the vehicle returns to normal operation, it can be driven normally or manually removed from the environmental chamber. After removing the vehicle from the environmental chamber, allow it to remain stationary for at least 30 minutes and confirm that the vehicle is in normal working order to avoid damage or malfunction caused by damage to some underdeveloped components during testing. The embodiments of the present invention have the following beneficial effects: (1) Based on the ideas and methods of this invention, a simulation verification and evaluation method for vehicles to be unable to use their electric functions normally due to winter icing was established for users; (2) Innovative and expanded test conditions and methods for simulated car wash and ice rain scenarios that fit the actual situation were developed, which effectively improved the consistency between real vehicle testing and user experience; (3) It effectively solved the problem of testing methods for simulating actual outdoor working conditions in the opposite season. Attached Figure Description
[0018] The above-described and additional aspects and advantages of the present invention will become apparent and readily understood from the following description of the embodiments taken in conjunction with the accompanying drawings, in which: Figure 1 A flowchart of an ice-breaking test method for an electric vehicle door device provided in an embodiment of the present invention. Detailed Implementation
[0019] It should be noted that, unless otherwise specified, the embodiments and features described in the present invention can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.
[0020] 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.
[0021] To address the shortcomings of existing solutions, this embodiment provides an ice-breaking test method for electric vehicle door devices. This method simulates real-world user scenarios in complex environments such as rain, snow, and freezing by subjecting the vehicle to rain humidification, low-temperature cooling, and ice layer construction. This systematically verifies the functional reliability of the vehicle's electric or mechanical moving parts under icy conditions. The overall method flow is as follows: Figure 1 As shown, the test mainly includes stages such as vehicle preparation, equipment preparation, vehicle humidification, freezing simulation, ice breaking verification, and test completion. Each stage is interconnected to form a complete test loop.
[0022] The method includes the following steps: S1. Confirm that the operating status of the electric components and the auxiliary energy status of the vehicle under test meet the test requirements, and prepare test equipment with rain simulation function and low temperature environment simulation function.
[0023] S2, using the rain simulation function, the test vehicle in a normal temperature environment is subjected to all-round rain treatment, so that the joint area of the moving parts of the test vehicle is fully wetted. S3, the wetted vehicle to be tested is transferred to a pre-cooled low-temperature environment. During the cooling process and when a specific low-temperature threshold is reached, liquid water is sprayed onto the joint area of the moving parts to form a covering ice layer. S4. After the ice layer forms and the low-temperature storage is completed, the electric function of the vehicle under test is activated or the mechanical operation is performed to verify the vehicle's ability to open under icing conditions.
[0024] First, in step S1, the status of the vehicle under test is confirmed and the test equipment is prepared. Specifically, a comprehensive check of the operating status of the electric components of the vehicle under test is required to ensure that the vehicle is in a state consistent with the current development stage, meaning that all functions to be verified have basic operational capabilities and no known faults. Simultaneously, the status of the vehicle's auxiliary energy system must be confirmed, including ensuring that the battery and power battery pack have sufficient charge levels, not lower than the threshold that would affect normal function execution, to avoid distorted test results due to insufficient power during subsequent testing. Regarding equipment, a rain simulation device and an environmental chamber device with low-temperature environment simulation capabilities should be prepared. The rain simulation device must be able to simulate a severe rainstorm environment, with a water pressure of not less than 250 kPa, and nozzle angles of at least 0° and 45°, or multi-angle adjustment capabilities, to ensure effective spraying from different directions; its spray flow rate should be not less than 50 mm / h, and the spray duration can be adjusted according to test requirements. The environmental chamber equipment should have a low-temperature capability of no less than -30℃ and a cooling rate of no less than 1℃ / min to ensure that the cooling process can be completed within a reasonable time. Simultaneously, its internal circulating air speed should be adjustable, with a minimum air speed not exceeding 1m / s to avoid excessively high air speeds affecting the icing pattern. In addition, a spray water bottle is required, which should have the ability to adjust the liquid water flow to both mist and droplet forms, with a flow rate of no less than 50mL / min, to meet the requirements for water volume and form in different stages of icing simulation.
[0025] In step S2, the vehicle under test undergoes a comprehensive rain humidification treatment. Specifically, the vehicle is parked normally in the central area of the rain equipment, and the heavy rain mode is activated for continuous spraying for at least 30 minutes to ensure the vehicle surface and the contact areas of all moving parts are fully wetted. For vehicles equipped with engines, it is also necessary to ensure that the engine compartment temperature has dropped to approximately the same as the ambient temperature to avoid residual high temperatures affecting moisture distribution and subsequent icing. During the rain process, the spray area should completely cover the entire exterior surface of the vehicle, especially key components involving opening or movement such as doors, front and rear hoods, charging port covers, and sliding rail mechanisms. It is essential to ensure that all joints and contact surfaces are fully wetted to create a uniform and genuine humidification state, providing the necessary conditions for subsequent ice formation.
[0026] In step S3, the vehicle that has undergone humidification is transferred to a low-temperature environment for freezing simulation. The vehicle transfer process should be as short as possible, preferably within a few minutes, to avoid moisture evaporation or loss. Under high-temperature conditions (e.g., summer ambient temperature above 35°C), the time for transferring the vehicle from the rain-soaked area to the environmental chamber should not exceed 5 minutes. If necessary, the operation can be carried out in the morning or during periods of lower temperature to improve test stability. For engine-powered vehicles, starting the vehicle should be avoided; manual pushing is preferred to enter the environmental chamber to prevent engine heat from interfering with the low-temperature environment. For electric vehicles, they can be driven into the environmental chamber at low speed.
[0027] Before the vehicle enters the environmental chamber, the equipment should be activated and its internal temperature lowered to below 10°C. Once inside, the vehicle should be immediately cooled at maximum power, with the airflow controlled to no more than 3 m / s to ensure uniform cooling and prevent disruption of the water film distribution. As the ambient temperature gradually decreases, when it drops below 5°C, the first water spraying operation should be performed on the mating areas of the moving parts to be tested using a spray bottle. The water temperature should not exceed 5°C, and the spraying method should create a continuous flow of water, allowing the water to form a flowing water layer on the surface of the parts and penetrate into the gaps. When the ambient temperature further drops to 0°C, water should be sprayed again, this time adjusting the spraying method to form a dotted water film, allowing the water to freeze rapidly at low temperatures and gradually form an ice crystal structure in the mating area.
[0028] In further implementation, to simulate icing conditions under different usage scenarios, different icing modes can be selected according to testing requirements. For example, to simulate the situation where water enters gaps and freezes after a car wash or snowmelt in winter, localized icing can be focused on forming in the joint areas of moving parts; to simulate an icy rain environment, continuous water spraying and cooling can be alternated to gradually thicken the ice layer. When thick ice accumulation verification is required, the water spraying and freezing process can be repeated on the basis of the above steps. That is, after the initial ice layer forms, water is sprayed evenly to allow the new water layer to adhere to the surface of the existing ice layer and freeze, gradually increasing the ice layer thickness until the ice layer thickness is not less than 3mm. At the same time, the ice layer coverage should at least cover the joint surface of the moving parts and extend outward by no less than 10mm to form an ice layer structure that significantly hinders the movement of the parts, thereby increasing the rigor of the test.
[0029] In step S4, after the ice layer is constructed, the vehicle undergoes cryogenic storage treatment to further enhance the density and structural strength of the ice layer. Typically, the vehicle is left stationary in the target low-temperature environment for at least 4 hours to simulate the actual use scenario of prolonged overnight parking in low temperatures. During this storage process, the internal structure of the ice layer gradually stabilizes and its mechanical strength increases, thus creating more realistic resistance conditions for subsequent opening actions.
[0030] After cryogenic storage is completed, the ice-breaking verification phase begins. For electrically operated components, their actions can be triggered remotely, such as automatic door opening and power tailgate opening, to observe whether they can overcome ice resistance and move normally without external assistance, thus achieving the ice-breaking function. For mechanically operated devices, operators should operate them according to the vehicle's normal operating instructions, such as pulling door handles or opening hoods, to verify whether they can be opened smoothly without external tools or force. In some implementation scenarios, actual user behavior can also be simulated, such as using snowplows or other tools to assist in ice breaking, to assess the vehicle's adaptability in real-world usage environments.
[0031] In addition, after completing the ice-breaking verification, the test concludes. First, the vehicle's power and related moving parts are shut off, and the vehicle is returned to its normal locked state. Then, the ambient temperature is gradually increased to approximately 5°C above the ambient temperature and maintained for a period until the temperature stabilizes, allowing the ice layer on the vehicle surface to completely melt and all systems to return to normal. After confirming that the vehicle functions normally, it can be moved out of the ambient temperature chamber by normal driving or manual operation. To further ensure that the vehicle has not suffered any potential damage during the test, it is preferable to leave the vehicle stationary for at least 30 minutes after the test and re-inspect key functions to avoid hidden failures in components that are not yet fully mature in the development stage under extreme conditions.
[0032] Furthermore, in practical applications, this method can be flexibly adjusted according to the intended use area of the vehicle and product design requirements. For example, different temperature ranges, ice thicknesses, and coverage areas can be set based on the climate characteristics of the target market; during testing in high-temperature seasons, the problem of insufficient environmental humidity can be compensated for by increasing the number of rain showers (e.g., using a two-shower method), thereby ensuring that the vehicle is adequately humidified; simultaneously, different icing modes can be selected based on the ice-breaking capabilities of different vehicle models to achieve tiered verification. Through the above methods, the opening performance and reliability of vehicles under various freezing conditions can be comprehensively evaluated, providing an important basis for vehicle structural design optimization and functional improvement.
[0033] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.
[0034] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.
[0035] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.
Claims
1. A method for testing the ice-breaking mechanism of an electric vehicle door, characterized in that, Includes the following steps: Confirm that the operating status of the electric components and the status of the auxiliary energy of the vehicle under test meet the test requirements, and prepare test equipment with rain simulation and low temperature environment simulation functions; The rain simulation function is used to subject the test vehicle to all-round rain treatment in a normal temperature environment, so that the contact areas of the moving parts of the test vehicle are fully wetted. After being wetted, the vehicle to be tested is transferred to a pre-cooled low-temperature environment. During the cooling process and when a specific low-temperature threshold is reached, liquid water is sprayed onto the joint area of the moving parts to form a covering ice layer. After the ice layer forms and completes low-temperature storage, the electric functions of the vehicle under test are activated or mechanical operations are performed to verify the vehicle's ability to open under icy conditions.
2. The method as described in claim 1, characterized in that, The process of using the rain simulation function to subject the test vehicle in a normal temperature environment to comprehensive rain treatment, ensuring that the contact areas of the moving parts of the test vehicle are fully wetted, includes: Park the vehicle to be tested normally in the middle area of the rain equipment, start the rain equipment and use the rain mode to rain the vehicle to be tested for at least 30 minutes, or when the vehicle to be tested is an engine vehicle, ensure that the temperature of the engine compartment is basically the same as the ambient temperature. During the rain test, the rain area is controlled to completely cover the vehicle under test, ensuring that the test functional components such as the doors, front and rear hoods are completely covered by the rain equipment and the vehicle under test is fully wetted.
3. The method as described in claim 2, characterized in that, When the vehicle under test is an engine vehicle, ensuring that the perceived temperature of the engine compartment is basically the same as the ambient temperature includes: When the summer high temperature is higher than When the above conditions are met, the fully moistened test vehicle is subjected to a second rain treatment. After the first rain treatment, the rain equipment is restarted again after a preset time interval to conduct a second rain treatment, ensuring that the test vehicle is fully humidified to offset the water evaporation caused by high temperature, and obtaining a moist test vehicle that meets the requirements of high temperature working conditions in summer.
4. The method as described in claim 1, characterized in that, The step of transferring the wetted vehicle to a pre-cooled low-temperature environment, and spraying liquid water onto the joint area of the moving parts to form a covering ice layer during the cooling process and when a specific low-temperature threshold is reached, includes: Before the vehicle to be tested enters the environmental chamber, the environmental chamber equipment is turned on in advance to lower the ambient temperature inside the environmental chamber to a certain level. The following steps are to transfer the wetted vehicle to the environmental chamber. If the vehicle is an engine vehicle, avoid starting the engine and transfer it manually. If the vehicle is an electric vehicle, drive it into the environmental chamber. The transfer time should not exceed 5 minutes. After the vehicle enters the cooling chamber, the maximum power cooling system is activated to reduce the temperature, and the airflow speed in the controlled environment chamber must not exceed [a certain value]. The vehicle under test was obtained during the cooling process.
5. The method as described in claim 4, characterized in that, The step of spraying liquid water onto the joint area of the moving parts to form a covering ice layer during the cooling process and when a specific low temperature threshold is reached includes: When the environmental chamber cools down to Next, use a spray bottle to spray water around the area where the verification component connects to the vehicle body, and control the water temperature to not exceed [a certain level]. Simply spray the water onto the surface to form a stream of water; When the environmental chamber cools down to Then, use a spray bottle to spray water again around the area where the verification component connects to the vehicle body, ensuring the water temperature does not exceed [a certain level]. Simply spray water onto the surface to form a dotted water film, and you will get the vehicle under test with preliminary icing.
6. The method as described in claim 5, characterized in that, After the spraying onto the surface forms a dotted water film, the process also includes: for example, verifying the thick ice-breaking mode, then... Continuously spray water in a circulating manner under the environment, and after freezing, spray water evenly again to maintain an ice layer thickness of no less than [amount missing]. Furthermore, the area covered by the ice layer must be greater than the edge of the moving parts' mating surface, extending by at least [a certain amount]. This yields a cover ice layer that meets the requirements of the thick ice breaking mode test.
7. The method as described in claim 1, characterized in that, After the ice layer forms and completes low-temperature storage, the electric function of the vehicle under test is activated or a mechanical operation is performed to verify the vehicle's ability to open under icy conditions, including: After the ice layer forms, it is stored at a low temperature for at least 4 hours to achieve a deep simulation of the night's duration and ensure the density of the ice to enhance its strength. Once the storage time is reached, the electric function is activated remotely to confirm whether the vehicle under test is moving and to achieve the ice-breaking function. If the vehicle under test has a device with mechanical operation function, use the correct operating method to open it, and verify whether it can be opened normally without taking any external objects.
8. The method as described in claim 7, characterized in that, The confirmation of whether the vehicle under test is in motion to achieve the ice-breaking function also includes: performing ice-breaking verification according to the normal operating method of the vehicle, without taking external force or violence to affect the normal use of its vehicle performance and function, or taking tools such as snowplows to assist in ice breaking to simulate user working conditions, and obtaining ice-breaking verification results.
9. The method as described in claim 1, characterized in that, The test equipment equipped with rain simulation and low-temperature environment simulation functions includes: Prepare rain equipment capable of simulating heavy rain conditions with a water pressure of no less than [amount missing]. The nozzle angle includes and Or the angle is adjustable, and the flow rate is not less than... And the duration is adjustable; Prepare environmental chamber equipment capable of simulating low-temperature environments, with a low-temperature capacity not less than [specified value]. The cooling rate at low temperatures shall not be less than The circulating air speed is adjustable, and the minimum adjustment value must not exceed [the specified value]. ; Prepare a spray bottle that can adjust the liquid water flow rate to either a mist or droplets, and the flow rate of the bottle should be no less than [amount missing]. .
10. The method as described in claim 1, characterized in that, The verification of the vehicle's ability to open under icy conditions also includes: After the vehicle ice-breaking verification is completed, the vehicle power and movement mechanism are turned off and the vehicle is locked normally. The environmental chamber was heated to ambient temperature plus... Once the temperature stabilizes and the vehicle returns to normal operation, it can be driven normally or manually removed from the environmental chamber. After being removed from the environmental chamber, the vehicle should remain stationary for at least 30 minutes and be confirmed to be in normal condition to avoid damage or malfunction of the vehicle due to damage to some devices that are not yet fully developed during the test.