Vehicle inspection well cover bottom scraping test device, test method, vehicle, medium and program

Abstract

The invention relates to the technical field of vehicle testing, in particular to a vehicle inspection well cover bottom scraping testing device and method, a vehicle, a medium and a program.The method comprises the steps that an inspection well cover is fixed to the front of the moving direction of a tested vehicle so as to simulate urban road inspection well cover obstacles; the deviation plate is arranged between a traction system and a brake system of the test vehicle, and a characteristic arc surface is arranged at the front end of the deviation plate and used for guiding the release direction of the traction column; the traction column is arranged on the deviation plate and is connected with a test vehicle through a steel wire rope; the brake system is linked with the traction system and used for controlling a traction column of the traction system to turn over in the direction of the characteristic arc surface at the front end of the deviation plate after the brake system is triggered, so that the steel wire rope is separated towards the two sides. Therefore, the problems of limitation, insufficient tool adaptability, insufficient safety early warning mechanism and the like of simulation verification for bottom scraping and collision in the prior art are solved.

Description

Technical Field

[0001] This application relates to the technical field of vehicle testing, and particularly relates to a vehicle manhole cover scraping test device, a test method, a vehicle, a medium and a program. Background Art

[0002] With the rapid popularization of new energy vehicles globally, their safety performance, especially the bottom collision protection ability, has become the focus of the industry. The battery pack of a new energy vehicle is usually arranged at the bottom of the vehicle. Compared with traditional fuel vehicles, its chassis ground clearance is smaller, and the battery pack, as a core high-voltage component, is extremely likely to cause serious safety accidents such as structural damage, thermal runaway, and even fire and explosion of the battery pack once it collides with road obstacles during driving. In urban roads, it is particularly common for manhole covers to form protrusions or depressions due to uneven installation or aging and loosening. The risk of bottom scraping in such scenarios is significantly increased. However, the existing technologies still have the following deficiencies in simulating and verifying such specific working conditions:

[0003] (1) Traditional bottom collision tests mostly use general obstacles and cannot accurately reproduce the geometric characteristics and actual collision conditions of manhole covers; the test results are difficult to truly reflect the actual risks of vehicles on urban roads; (2) Existing test tooling usually relies on fixed tracks or single traction structures and is difficult to adapt to the battery pack layouts and vehicle width differences of different vehicle models. The adjustment of the collision point relies on manual trial and error, with low efficiency and insufficient accuracy, resulting in poor test repeatability; (3) In traction collision tests, the tow rope is prone to contact the obstacle before the battery pack, interfering with the authenticity of the collision process, not considering the multi-directional detachment requirements under complex road conditions, and lacking directional adaptation to specific obstacles; (4) Existing test methods mostly rely on post-event analysis for monitoring the thermal safety of the battery pack, and the real-time warning mechanism is insufficient. When the temperature of the battery pack rises suddenly during a collision, there is a lack of rapid-response fire linkage measures, and the test risk is relatively high. Summary of the Invention

[0004] This application provides a vehicle manhole cover scraping test device, a test method, a vehicle, a medium and a program to solve the problems in related technologies such as the limitations of simulating and verifying bottom scraping, insufficient adaptability of tooling, and insufficient safety warning mechanism.

[0005] The first aspect of the present application provides a vehicle manhole cover scraping test device, including: a manhole cover fixed in front of the test vehicle in the moving direction to simulate the manhole cover obstacle on the urban road; a deviation plate arranged between the traction system and the braking system of the test vehicle, wherein a characteristic arc surface is provided at the front end of the deviation plate for guiding the release direction of the traction column; a traction column arranged on the deviation plate, which is connected to the test vehicle through a steel wire rope; the braking system is linked with the traction system, and is used to control the traction column of the traction system to flip along the direction of the characteristic arc surface at the front end of the deviation plate after the braking system is triggered, so that the steel wire rope disengages to both sides.

[0006] Optionally, the lateral position of the deviation plate is adjustable to adapt to different vehicle widths and the positions of battery pack collision points.

[0007] Optionally, a plurality of lateral adjustment bolt holes are provided on the deviation plate for adjusting the installation position of the traction column according to the coordinates of the battery pack on the vehicle to ensure that the collision point coincides with the target position of the manhole cover.

[0008] Optionally, the release direction of the traction column is defined by the geometric shape of the characteristic arc surface. After the brake is triggered, the traction column flips unidirectionally along the arc surface direction to realize the directional disengagement of the steel wire rope.

[0009] Optionally, it further includes: an acceleration sensor, a battery pack temperature sensor and a trigger switch, wherein the acceleration sensor is pasted on both sides of the test vehicle suspension; the battery pack temperature sensor is installed on the surface of the battery pack; the trigger switch is fixed on the ground and linked with the data acquisition device; during the test, the temperature of the battery pack is monitored in real time, and if the temperature exceeds the preset threshold, the target device is immediately started to cool down.

[0010] The second aspect of the present application provides a test method for vehicle manhole cover scraping, including: the method is implemented by using the vehicle manhole cover scraping test device described in the above embodiments, wherein the method includes the following steps: identifying the test requirements of the test vehicle; identifying the battery pack coordinates according to the test requirements to determine the collision position, and adjusting the position of the traction column on the deviation plate according to the collision position; controlling the test vehicle to perform the target test action, and acquiring the mechanical data and battery safety parameters during the collision to generate a test report.

[0011] Optionally, controlling the test vehicle to perform the target test action includes: controlling the test vehicle to move uniformly or accelerate along a predetermined track through the traction system; when the test vehicle approaches the manhole cover, triggering the braking system to make the traction column flip unidirectionally along the characteristic arc surface of the deviation plate; after braking, controlling the ring of the tow rope to disengage from the traction column, and the vehicle continues to move forward by inertia to ensure that the battery pack is in direct contact with the manhole cover; adjusting the lateral position of the traction column through a plurality of bolt holes on the deviation plate to make the collision point coincide with the theoretical position of the manhole cover.

[0012] In the third aspect of the embodiments of the present application, a vehicle is provided, including: a memory, a processor, and a computer program stored on the memory and executable on the processor, where the processor executes the program to perform the test method for the vehicle manhole cover scraping the bottom as described in the above embodiments.

[0013] In the fourth aspect of the embodiments of the present application, a computer-readable storage medium is provided, on which a computer program is stored, and the program is executed by a processor to perform the test method for the vehicle manhole cover scraping the bottom as described in the above embodiments.

[0014] In the fifth aspect of the embodiments of the present application, a computer program product is provided, including a computer program or instruction, and when the computer program or instruction is executed, it realizes the test method for the vehicle manhole cover scraping the bottom as described in the above embodiments.

[0015] Therefore, the present application has at least the following beneficial effects:

[0016] In the embodiments of the present application, by simulating the actual manhole cover structure, the coincidence range between the battery pack and the manhole cover is clarified, and the typical scraping bottom conditions on urban roads are reproduced; a deviating plate structure that can be horizontally adjusted is introduced, combined with the bolt hole position design, to adapt to the collision point requirements of different vehicle models, improving the test efficiency and accuracy; based on the characteristic arc surface at the front end of the deviating plate, the one-way flipping path of the traction column is limited to ensure that the towing rope separates to both sides, completely avoiding interference with the manhole cover; a temperature sensor and a threshold triggering system are integrated to monitor the temperature rise of the battery pack in real time and link with a dry powder fire extinguisher or a sprinkler system, significantly reducing the test risk.

[0017] The additional aspects and advantages of the present application will be partially given in the following description, partially become obvious from the following description, or be understood through the practice of the present application. Description of the Drawings

[0018] The above and / or additional aspects and advantages of the present application will become obvious and easy to understand from the following description of the embodiments in conjunction with the drawings, where:

[0019] Figure 1 It is a schematic diagram of a vehicle manhole cover scraping bottom test device provided according to an embodiment of the present application;

[0020] Figure 2 It is a schematic diagram of a wall barrier provided according to an embodiment of the present application;

[0021] Figure 3 It is a schematic diagram of a traction system and a braking system provided according to an embodiment of the present application;

[0022] Figure 4 It is a schematic diagram of a traction column provided according to an embodiment of the present application;

[0023] Figure 5 Schematic diagram of a deviation plate provided according to an embodiment of the present application;

[0024] Figure 6 Flow chart of a vehicle manhole cover scraping test method provided according to an embodiment of the present application;

[0025] Figure 7 Schematic diagram of the structure of a vehicle provided according to an embodiment of the present application.

[0026] Description of the drawings: Manhole cover 1, test vehicle 2, traction system 3, braking system 4, connecting rod 5, traction column 12, deviation plate 13, characteristic arc surface 14. Detailed implementation manners

[0027] The embodiments of the present application will be described in detail below. The examples of the embodiments are shown in the drawings, where the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions from beginning to end. The embodiments described below with reference to the drawings are exemplary and are intended to explain the present application, but should not be construed as limiting the present application.

[0028] The vehicle manhole cover scraping test device, test method, vehicle, storage medium and program according to the embodiments of the present application will be described below with reference to the drawings.

[0029] Specifically, a vehicle manhole cover scraping test device according to an embodiment of the present application will be described with reference to the drawings.

[0030] Figure 1 It is a block diagram of a vehicle manhole cover scraping test device according to an embodiment of the present application.

[0031] As Figures 1-5 shown, the vehicle manhole cover scraping test device 10 includes: a manhole cover 1, a test vehicle 2, a traction system 3, a braking system 4, a deviation plate 13 and a traction column 12.

[0032] Among them, the manhole cover 1 is fixed in front of the moving direction of the test vehicle 2 to simulate a manhole cover obstacle on an urban road; the deviation plate 13 is arranged between the traction system 3 and the braking system 4 of the test vehicle 2. Among them, a characteristic arc surface 14 is provided at the front end of the deviation plate 13 for guiding the release direction of the traction column 12; the traction column 12 is arranged on the deviation plate 13 and is connected to the test vehicle through a steel wire rope 15; the braking system 3 is linked with the traction system 4 and is used for controlling the traction column 12 of the traction system 4 to flip along the direction of the characteristic arc surface 14 at the front end of the deviation plate 13 after the braking system 3 is triggered, so that the steel wire rope disengages to both sides.

[0033] It can be understood that in the embodiments of the present application, the manhole cover is fixed in front of the moving direction of the test vehicle to accurately reproduce the scraping risk caused by the uneven manhole cover on urban roads. The traction column flips to separate the steel wire ropes to both sides, completely avoiding the interference between the tow rope and the manhole cover, ensuring that the battery pack directly contacts the obstacle, and improving the authenticity of the test. The multi-position structure allows for quick adjustment of the collision point position, reduces the cost of manual trial and error, and improves the test efficiency and accuracy. Through scene realistic simulation, tow rope directional separation, flexible tooling adaptation, and active safety protection, problems such as tow rope interference, insufficient collision accuracy, and high safety risks in the manhole cover scraping test of new energy vehicles are solved, providing a highly reliable and repeatable test method for the structural safety verification of the battery pack.

[0034] In the embodiments of the present application, the lateral position of the deviation plate 13 is adjustable to adapt to different vehicle widths and the positions of the battery pack collision points.

[0035] It can be understood that in the embodiments of the present application, the laterally adjustable design of the deviation plate realizes precise adaptation to the vehicle width and the position of the battery pack through multi-position bolt fixation and mechanical positioning assistance, breaks the vehicle model limitation, ensures the collision accuracy, and reduces the customization requirements and the cost of manual trial and error.

[0036] In the embodiments of the present application, a plurality of lateral adjustment bolt holes are provided on the deviation plate 13 for adjusting the installation position of the traction column according to the coordinates of the battery pack on the vehicle to ensure that the collision point coincides with the target position of the manhole cover.

[0037] It can be understood that in the embodiments of the present application, through the physical positioning reference and the modular adjustment mechanism, the collision point is ensured to coincide with the target position of the manhole cover at the millimeter level, improving the authenticity of the test. The vehicle model and the collision point can be quickly switched, shortening the test cycle. The mechanical positioning eliminates human errors, ensuring the comparability and scientific nature of the test results.

[0038] In the embodiments of the present application, the release direction of the traction column 12 is limited by the geometric shape of the characteristic arc surface 14. After the brake is triggered, the traction column 12 flips unidirectionally along the arc surface direction to realize the directional separation of the steel wire rope.

[0039] It can be understood that in the embodiments of the present application, the release direction of the traction column is limited by the characteristic arc surface, the tow rope is directionally separated, ensuring direct collision between the battery pack and the manhole cover. The mechanical limit improves the system stability and reduces the maintenance cost. Through the design of the arc surface direction, it is compatible with various types of test requirements.

[0040] In the embodiments of the present application, it further includes: an acceleration sensor, a battery pack temperature sensor, and a trigger switch.

[0041] Among them, the acceleration sensors are pasted on both sides of the suspension of the test vehicle; the battery pack temperature sensors are installed on the surface of the battery pack; the trigger switch is fixed on the ground and linked with the data acquisition device. During the test, the temperature of the battery pack is monitored in real time. If the temperature exceeds the preset threshold, the target device will be immediately activated to cool down.

[0042] Among them, the preset threshold can be set according to actual needs and is not specifically limited.

[0043] It can be understood that in the embodiments of the present application, the acceleration sensors can monitor the vibration conditions and acceleration changes during the vehicle driving process to analyze the performance of the vehicle suspension system, driving comfort, and detect potential mechanical failures; the battery pack temperature sensors are used to monitor the working temperature of the battery in real time. The battery working temperature is crucial for ensuring battery efficiency and life, and can also prevent safety hazards caused by overheating. The trigger switch is used to manually trigger emergency response measures or, as part of an automated system, automatically activate when abnormal conditions are detected to ensure vehicle safety.

[0044] Specifically, as Figures 2-5 shown, the tooling and method for the bottom scraping test of the electric vehicle in the present application. The tooling includes a traction system 3, a manhole cover 1, a deviation plate 13, a traction column 12, a braking system 4, and a test vehicle 2. The traction column 12 is bolted to the deviation plate 13, the braking system 4 is connected to the traction system 3 through a connecting rod 8, the deviation plate 13 is bolted to the traction system 3 and the braking system 4, and the test vehicle 2 is connected to the traction column 12 through a steel wire rope. Among them, the traction column 12 is installed on the deviation plate 13, and the characteristic arc surface 14 is in front of the movement of the deviation plate to ensure that the tractor can drive the vehicle forward when moving. After the braking system 4 brakes, the traction column 12 can flip forward. A ring is fixed at the front end of the tow rope 15 which is separated from the traction column 12, and the ring is sleeved on the traction column 12, enabling effective separation of the ring and the traction column 12 after braking.

[0045] The vehicle manhole cover bottom scraping test device proposed according to the embodiments of the present application, by simulating the actual manhole cover structure, clarifies the coincidence range between the battery pack and the manhole cover, and reproduces typical bottom scraping working conditions on urban roads; introduces a laterally adjustable deviation plate structure, combined with bolt hole position design, to adapt to the collision point requirements of different vehicle models, improving the test efficiency and accuracy; based on the characteristic arc surface at the front end of the deviation plate, limits the one-way flipping path of the traction column, ensuring that the tow rope separates to both sides and completely avoiding interference with the manhole cover; integrates temperature sensors and a threshold trigger system to monitor the temperature rise of the battery pack in real time and link with a dry powder fire extinguisher or a sprinkler system, significantly reducing the test risk.

[0046] Figure 6 It is a schematic flow chart of a test method for vehicle manhole cover bottom scraping provided by the embodiments of the present application.

[0047] As Figure 6 shown, the test method for the vehicle manhole cover scraping the bottom includes the following steps:

[0048] In step S101, identify the test requirements of the test vehicle.

[0049] It can be understood that the embodiments of the present application can identify the test requirements of the test vehicle to facilitate subsequent testing of the vehicle.

[0050] It should be noted that the specific parameters of the test are determined according to the test requirements, including but not limited to the model of the test vehicle, the type and protection level of the battery pack, the speed requirements of the test, etc.

[0051] In step S102, determine the collision position according to the test requirements by identifying the battery pack coordinates, and adjust the position of the traction column on the deviation board according to the collision position.

[0052] It can be understood that the embodiments of the present application can determine the collision position according to the test requirements by identifying the battery pack coordinates, and adjust the position of the traction column on the deviation board according to the collision position, ensuring that the test can accurately simulate the situations that may be encountered in the actual use environment, and evaluating the safety performance of the battery pack under extreme conditions by accurately setting the collision point.

[0053] In step S103, control the test vehicle to perform the target test action, and obtain the mechanical data and battery safety parameters during the collision to generate a test report.

[0054] It can be understood that the embodiments of the present application can control the test vehicle to perform the target test action, and obtain the mechanical data and battery safety parameters during the collision to generate a test report, which can not only effectively improve the overall safety performance of the vehicle, but also provide important design feedback for the manufacturer to promote continuous product improvement.

[0055] It should be noted that by precisely controlling the speed, position of the test vehicle and the collision angle with the manhole cover, the performance of the vehicle suspension system, body structure and other key components under impact can be accurately evaluated;

[0056] In the embodiments of the present application, controlling the test vehicle to perform the target test action includes: controlling the test vehicle to move uniformly or accelerate along a predetermined track through the traction system; when the test vehicle approaches the manhole cover, trigger the braking system to make the traction column flip unidirectionally along the characteristic arc surface of the deviation board; after braking, control the ring of the tow rope to disengage from the traction column, and the vehicle continues to move forward by inertia to ensure that the battery pack directly contacts the manhole cover; adjust the lateral position of the traction column through multiple bolt holes on the deviation board to make the collision point coincide with the theoretical position of the manhole cover.

[0057] It can be understood that the embodiments of the present application can use a traction system to control the test vehicle to move uniformly or accelerate along a predetermined track, and trigger the braking system when approaching the manhole cover, which can highly simulate the situation where the vehicle suddenly encounters an obstacle during actual driving; by adjusting the position of the traction column on the deviation plate and ensuring that the tow rope ring is disengaged from the traction column at a specific moment, the high consistency of each test condition can be ensured; allowing the vehicle to continue moving forward by inertia until the battery pack directly contacts the manhole cover can test the safety performance of the battery pack when it is subjected to external impacts, including its structural integrity, internal component stability, etc., so as to provide a basis for improving the design of the battery pack; through precise control and adjustment, the accurate simulation of the vehicle's performance in extreme situations is achieved.

[0058] According to the test method for the vehicle scraping the bottom of the manhole cover proposed by the embodiments of the present application, the systematic method from identifying test requirements to generating a detailed test report not only improves the scientificity and accuracy of vehicle testing, but also provides strong support for improving product quality and user satisfaction.

[0059] The following will elaborate on the present application with specific embodiments as follows:

[0060] Before the test starts, first measure and add weights to make its total mass reach the designed curb weight, fix tow ropes on both sides of the vehicle suspension, paste acceleration sensors and battery pack temperature sensors, and install data acquisition equipment; adjust the seat height to the lowest point, the longitudinal displacement to the midpoint of the front and rear, measure the seat back angle to 25° with a three-dimensional hip point measurement device, and measure the distance between the H point of the three-dimensional hip point measurement device and the center point on the surface of the front door lock catch installation screw, and compare it with the theoretical value to see if it meets the requirements. After meeting the requirements, record the H point coordinates, place a dummy, adjust the dummy's H point, and compare it with the H point position measured by the 3D H point. After meeting the requirements, record the dummy's H point coordinates and the 3D coordinate deviation value, find the vehicle's front and rear center lines, paste the center lines, and determine the collision position according to the coordinates of the battery pack on the vehicle. Adjust the position of the traction column on the deviation plate according to the collision position so that the collision position theoretically coincides with the required collision point. Install one side of the front end of the deviation plate on the traction cart, and install the other end of the deviation plate on the rear brake. Adjust the vehicle center line to be parallel to the track, connect the tow rope to the traction column, fix the trigger switch at a suitable position on the ground, turn on the data acquisition equipment and run it, start the vehicle, start the test, collect sensor signals, and monitor the temperature change of the battery pack. If the temperature is too high or the temperature rises rapidly, immediately prepare fire-fighting equipment to prevent fire. If there is no abnormality, conduct electrical safety measurement, end the test, return the dummy, and clean up the site.

[0061] Figure 7 It is a schematic structural diagram of the vehicle provided by the embodiments of the present application. The vehicle may include:

[0062] A memory 701, a processor 702, and a computer program stored on the memory 701 and executable on the processor 702.

[0063] When the processor 702 executes the program, it implements the test method for scraping the bottom of the vehicle manhole cover provided in the above embodiments.

[0064] Furthermore, the vehicle further includes:

[0065] A communication interface 703 for communication between the memory 701 and the processor 702.

[0066] The memory 701 is used to store a computer program executable on the processor 702.

[0067] The memory 701 may include a high-speed RAM memory, and may also include a non-volatile memory, such as at least one disk memory.

[0068] If the memory 701, the processor 702, and the communication interface 703 are implemented independently, the communication interface 703, the memory 701, and the processor 702 can be interconnected through a bus and communicate with each other. The bus can be an Industry Standard Architecture (ISA) bus, a Peripheral Component Interconnect (PCI) bus, or an Extended Industry Standard Architecture (EISA) bus, etc. The bus can be divided into an address bus, a data bus, a control bus, etc. For the sake of representation, Figure 7 only a thick line is used to represent it in the figure, but it does not mean that there is only one bus or one type of bus.

[0069] Optionally, in a specific implementation, if the memory 701, the processor 702, and the communication interface 703 are integrated on a single chip, the memory 701, the processor 702, and the communication interface 703 can communicate with each other through an internal interface.

[0070] The processor 702 may be a Central Processing Unit (CPU), or an Application Specific Integrated Circuit (ASIC), or one or more integrated circuits configured to implement the embodiments of the present application.

[0071] The embodiments of the present application further provide a computer-readable storage medium, on which a computer program or instructions are stored. When the computer program or instructions are executed by a processor, the test method for the vehicle manhole cover scraping the bottom as described above is implemented.

[0072] The embodiments of the present application further provide a computer program product, including a computer program or instructions. When the computer program or instructions are executed, the test method for the vehicle manhole cover scraping the bottom as described above is implemented.

[0073] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples", etc. means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in any one or N embodiments or examples in a suitable manner. In addition, without conflict, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples.

[0074] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "N" is at least two, such as two, three, etc., unless otherwise specifically defined.

[0075] Any process or method description shown in the flowchart or described in other ways herein can be understood as representing a module, segment, or part of code including one or N executable instructions for implementing a customized logical function or process. The scope of the preferred embodiments of the present application includes additional implementations, where the functions can be executed in a substantially simultaneous manner or in a reverse order according to the involved functions, rather than in the order shown or discussed. This should be understood by those skilled in the art to which the embodiments of the present application belong.

[0076] It should be understood that each part of the present application can be implemented by hardware, software, firmware, or a combination thereof. In the above embodiments, the N steps or methods can be implemented by software or firmware stored in a memory and executed by a suitable instruction execution system. For example, if implemented by hardware, as in another embodiment, it can be implemented by a combination of any one or more of the following techniques well known in the art: discrete logic circuits having logic gate circuits for implementing logical functions on data signals, application specific integrated circuits having appropriate combinational logic gate circuits, programmable gate arrays (PGAs), field programmable gate arrays (FPGAs), and the like.

[0077] Those of ordinary skill in the art can understand that all or part of the steps carried by the methods of the above embodiments can be completed by instructing relevant hardware through a program, and the program can be stored in a computer-readable storage medium. When the program is executed, it includes one or a combination of the steps of the method embodiments.

Claims

1. A vehicle manhole cover scraping test device, characterized in that, Comprising: A manhole cover fixed in front of the moving direction of the test vehicle to simulate the manhole cover obstacle on the urban road; A deviation plate arranged between the traction system and the braking system of the test vehicle, wherein a characteristic arc surface is provided at the front end of the deviation plate for guiding the release direction of the traction column; A traction column arranged on the deviation plate, which is connected to the test vehicle through a steel wire rope; The braking system is linked with the traction system, and is used for controlling the traction column of the traction system to flip along the direction of the characteristic arc surface at the front end of the deviation plate after the braking system is triggered, so that the steel wire rope disengages to both sides.

2. The vehicle manhole cover scraping test device according to claim 1, characterized in that, The lateral position of the deviation plate is adjustable to adapt to different vehicle widths and the positions of battery pack collision points.

3. The vehicle manhole cover scraping test device according to claim 1, characterized in that A plurality of lateral adjustment bolt holes are provided on the deviation plate for adjusting the installation position of the traction column according to the coordinates of the battery pack on the vehicle to ensure that the collision point coincides with the target position of the manhole cover.

4. The vehicle manhole cover scraping test device according to claim 1, characterized in that, The release direction of the traction column is defined by the geometric shape of the characteristic arc surface. After the brake is triggered, the traction column flips unidirectionally along the arc surface direction to realize the directional disengagement of the steel wire rope.

5. The vehicle manhole cover scraping test device according to claim 1, wherein Further comprising: An acceleration sensor, a battery pack temperature sensor and a trigger switch, wherein the acceleration sensor is pasted on both sides of the test vehicle suspension; the battery pack temperature sensor is installed on the surface of the battery pack; the trigger switch is fixed on the ground and linked with the data acquisition device; wherein, during the test process, the temperature of the battery pack is monitored in real time. If the temperature exceeds the preset threshold, the target device is immediately started to cool down.

6. A test method for scraping the bottom of a vehicle manhole cover, characterized in that, The method is implemented by using the vehicle manhole cover scraping test device according to any one of claims 1-5, wherein the method comprises the following steps: Identifying the test requirements of the test vehicle; Identifying the battery pack coordinates according to the test requirements to determine the collision position, and adjusting the position of the traction column on the deviation plate according to the collision position; Controlling the test vehicle to perform the target test action, and acquiring the mechanical data and battery safety parameters during the collision process to generate a test report.

7. The test method for scraping the bottom of a vehicle manhole cover according to claim 6, characterized in that The controlling the test vehicle to perform the target test action includes: Controlling the test vehicle to move uniformly or accelerate along a predetermined track through the traction system; When the test vehicle approaches the manhole cover, triggering the braking system to make the traction column flip unidirectionally along the characteristic arc surface of the deviation plate; After braking, controlling the ring of the tow rope to disengage from the traction column, and the vehicle continues to move forward by inertia to ensure that the battery pack is in direct contact with the manhole cover; Adjusting the lateral position of the traction column through a plurality of bolt holes on the deviation plate to make the collision point coincide with the theoretical position of the manhole cover.

8. A vehicle, characterized in that, Comprising: A memory, a processor and a computer program stored on the memory and executable on the processor, and the processor executes the program to implement the test method for vehicle manhole cover scraping according to any one of claims 6-7.

9. A computer-readable storage medium having a computer program stored thereon, characterized in that, The program is executed by the processor to be used for implementing the test method for vehicle manhole cover scraping according to any one of claims 6-7.

10. A computer program product, characterized in that, Including a computer program, which is used for implementing the test method for vehicle manhole cover scraping according to any one of claims 6-7 when executed by the processor.

Images