New energy vehicle battery pack bottom scraping test vehicle

Abstract

The utility model discloses a new energy vehicle battery pack bottom scraping test vehicle which comprises a test vehicle frame body, a mounting plate used for mounting a battery pack is arranged at the bottom of the frame body, and the angle of the mounting plate relative to the ground in the advancing direction can be adjusted. A hinge shaft is arranged between the front portion of the mounting plate and the frame body, and the mounting plate can rotate around the hinge shaft. Telescopic cylinders are arranged on the two sides of the frame body respectively, and telescopic rods of the two telescopic cylinders are connected with the two sides of the rear portion of the mounting plate respectively. The device has the advantages that under the condition that complex road conditions do not need to be set, the obstacles can form scraping impact on the bottom face of the battery pack at various angles, various needed test data are obtained, and compared with the prior art, the device cost can be remarkably reduced, and the test operation is simplified.

Description

Technical Field

[0001] The utility model relates to a new energy vehicle battery pack bottom scraping test vehicle, belonging to the technical field of automobile testing equipment. Background Art

[0002] Vehicle underbody scraping is primarily caused by the front wheels suddenly dropping down during driving (when going over a bump or into a pothole), causing the vehicle body to sink into contact with the ground. The battery pack, mounted on the underbody of a new energy vehicle, is a critical area requiring significant protection. Whether the battery pack's underbody protection is protected from crushing, deformation, or shattering when subjected to a sudden impact is a key component in determining whether the pack's underbody protection meets the required standards.

[0003] In order to test the anti-scratch performance of the underbody of new energy battery vehicles, existing motor vehicle inspections mainly conduct anti-scratch experiments on battery packs by simulating the road conditions under which the car is running. However, it is difficult to accurately set the required road conditions for various situations and it is difficult to obtain the required various test data. In addition, complex road condition settings require long distances and high costs.

[0004] After searching, we found patent document 202311706474.3, which also involves a scraping test on a battery pack. This patent discloses a method and apparatus for scraping the bottom of a battery pack, wherein the apparatus includes: a mounting frame and a trolley; the mounting frame is a gate-shaped mounting frame, which is arranged on the trolley, and the brackets on both sides of the mounting frame are located on both sides of the trolley. The bottom surface of the mounting frame is provided with a plurality of mounting brackets, which are used to fix the battery pack to be tested with bolts, thereby fixing the battery pack to be tested under the mounting frame; the mounting bracket includes: a first bracket and a second bracket; one end of the first bracket is fixedly connected to the mounting frame, and the other end is fixedly connected to one end of the second bracket, and the other end of the second bracket is provided with a connection hole for connecting the battery pack to be tested; a height adjustment device is provided in the middle of the mounting frame, and the height adjustment device is connected to the trolley for adjusting the height of the battery pack to be tested from the ground. This solution can adapt to the battery packs of different vehicles and perform scraping tests on the battery packs, thereby reducing the testing cost and improving the rigor and integrity of the electric vehicle point safety testing standards.

[0005] Although this patent involves a bottom scraping test of a battery pack and can adapt to the installation of battery packs of different specifications, it cannot solve the technical problem to be solved by this application. Utility Model Content

[0006] The technical problem to be solved by the utility model is: how to accurately obtain various anti-scratch test data in a more economical way.

[0007] In view of the above problems, the technical solutions proposed by the present invention are:

[0008] A new energy vehicle battery pack bottom scraping test vehicle comprises a test vehicle frame, a mounting plate for mounting the battery pack is provided at the bottom of the frame, and the angle of the mounting plate relative to the ground along the forward direction can be adjusted.

[0009] A hinge shaft is provided between the front portion of the mounting plate and the frame body, and the mounting plate can rotate around the hinge shaft.

[0010] Telescopic cylinders are respectively provided on both sides of the frame body, and the telescopic rods of the two telescopic cylinders are respectively connected to the two sides of the rear part of the mounting plate.

[0011] The telescopic cylinder is an electric telescopic cylinder.

[0012] The telescopic cylinder includes a turbine-worm structure having a turbine and a worm, wherein the telescopic rod has an external thread, the turbine has a threaded hole, the turbine cooperates with the external thread of the telescopic rod through the threaded hole and is sleeved on the telescopic rod, the turbine cooperates with the worm, and the worm is connected to the motor.

[0013] A motor is arranged on the frame, and the worms of the two telescopic cylinders are respectively connected to the output shafts of the motor.

[0014] A plurality of mounting holes are provided on the mounting plate to accommodate hanging battery packs of different specifications.

[0015] A rectangular weight-reducing hole is provided in the central area of ​​the mounting plate.

[0016] A bumper collision test mechanism is provided at the front end of the frame, which includes an anti-collision longitudinal beam and an anti-collision cross beam, wherein the anti-collision cross beam is fixed at the front end of the anti-collision longitudinal beam.

[0017] The anti-collision longitudinal beam is a collapse structure. Beneficial effects

[0018] 1. Without the need to set up complex road conditions, obstacles can be made to scrape and impact the bottom surface of the battery pack at various angles to obtain the required test data. Compared with existing technologies, this can significantly reduce facility costs and simplify test operations;

[0019] 2. While being able to perform battery pack bottom scraping tests, it also has frontal collision test functions. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is a three-dimensional schematic diagram of the test vehicle viewed from above;

[0021] Figure 2 This is a simplified view of the test vehicle during testing;

[0022] Figure 3 is a three-dimensional schematic diagram of the test vehicle viewed from above;

[0023] Figure 4for Figure 3 A partial schematic diagram of

[0024] Figure 5 It is a three-dimensional schematic diagram of the turbine worm structure.

[0025] In the figure: 100, test vehicle; 1, frame; 2, mounting plate; 201, mounting hole; 202, weight-reducing hole; 3, hinge shaft; 4, telescopic cylinder; 401, telescopic rod; 402, turbine; 403, worm; 5, motor; 6, battery pack; 7, anti-collision longitudinal beam; 8, anti-collision cross beam; 9, obstacle. DETAILED DESCRIPTION

[0026] The present invention will be further described below with reference to the accompanying drawings: Example 1

[0027] like Figure 1 、 2 As shown, a new energy vehicle battery pack scraping test vehicle includes a frame 1 of a test vehicle 100. A mounting plate 2 for mounting a battery pack 6 is provided at the bottom of the frame 1. The angle of the mounting plate 2 relative to the ground along the forward direction can be adjusted. When the angle of the mounting plate 2 relative to the ground along the forward direction is large, the bottom surface of the battery pack 6 mounted on the mounting plate 2 forms an inclined surface that can be hit by an obstacle 9. This allows the test vehicle 100 running at a set speed to cause the obstacles 9 to scrape and impact the bottom surface of the battery pack 6 at various angles without setting up a ground pit to cause the wheels to sink, thereby obtaining various required test data. In this way, there is no need to set up complex road conditions. Only the angle of the mounting plate 2 and the driving speed of the test vehicle 100 need to be adjusted to obtain a test result that meets the requirements. Compared with the existing technology, it can significantly reduce facility costs and simplify test operations.

[0028] like Figure 2 As shown in FIG. 5 , a hinge axis 3 is provided between the front of the mounting plate 2 and the frame 1, allowing the mounting plate 2 to rotate about the hinge axis 3. Telescopic cylinders 4 are provided on either side of the frame 1, with telescopic rods 401 of the two cylinders 4 connected to the rear sides of the mounting plate 2. This allows the mounting plate 2 to rotate about the hinge axis 3 at the front end by extending and retracting the telescopic rods 401, thereby adjusting the angle of the mounting plate 2 relative to the ground, making operation simple.

[0029] The telescopic cylinder 4 is electrically powered and comprises a worm-gear structure with a turbine 402 and a worm 403. The telescopic rod 401 has external threads, and the turbine 402 has a threaded hole. The turbine 402 fits over the external threads of the telescopic rod 401 through the threaded hole. The turbine 402 engages with the worm 403, which is then connected to a motor 5 (preferably a servo motor). In use, the rotation of the worm 403 drives the turbine 402, which in turn drives the telescopic rod 401 up and down (the height of the turbine 402 remains unchanged while the turbine 402 rotates). The worm-gear structure allows the telescopic rod 401 to be locked at any position, preventing it from automatically extending or retracting due to impact force.

[0030] The telescopic cylinder can also be a hydraulic cylinder, but its disadvantage is that the telescopic amount is not as easy to control as a servo motor.

[0031] A motor 5 is provided on the frame 1 , and the worms 403 of the two telescopic cylinders 4 are respectively connected to the output shafts of the motor 5 .

[0032] A plurality of mounting holes 201 are provided on the mounting plate 2 to accommodate the hanging of battery packs 6 of different specifications.

[0033] A rectangular weight-reducing hole 202 is provided in the center area of ​​the mounting plate 2 to reduce the weight of the entire mounting plate 2 . Example 2

[0034] like Figure 1 As shown, this embodiment is a further configuration of the first embodiment, namely, a bumper collision test mechanism is provided at the front end of the frame 1, which includes an anti-collision longitudinal beam 7 and an anti-collision cross beam 8. The anti-collision cross beam 8 is fixed to the front end of the anti-collision longitudinal beam 7. In this way, the test vehicle can perform a frontal collision avoidance test while being able to perform a bottom scraping test on the battery pack 6.

[0035] The anti-collision longitudinal beam 7 is a collapse structure capable of absorbing impact kinetic energy.

[0036] The above embodiments are only used to more clearly describe the present invention and cannot be regarded as limiting the scope of protection covered by the present invention. Any modifications in equivalent forms should be regarded as falling within the scope of protection covered by the present invention.

Claims

1. A new energy vehicle battery pack scraping test vehicle, comprising a test vehicle frame (1), characterized in that: A mounting plate (2) for mounting a battery pack is provided at the bottom of the frame (1); the angle of the mounting plate (2) relative to the ground along the forward direction can be adjusted.

2. The new energy vehicle battery pack bottom scraping test vehicle according to claim 1, characterized in that: A hinge shaft (3) is provided between the front portion of the mounting plate (2) and the frame body (1), and the mounting plate (2) is capable of rotating around the hinge shaft (3).

3. The new energy vehicle battery pack bottom scraping test vehicle according to claim 2, characterized in that: Telescopic cylinders (4) are respectively provided on both sides of the frame (1), and the telescopic rods (401) of the two telescopic cylinders (4) are respectively connected to both sides of the rear portion of the mounting plate (2).

4. The new energy vehicle battery pack bottom scraping test vehicle according to claim 3, characterized in that: The telescopic cylinder (4) is an electric telescopic cylinder (4).

5. The new energy vehicle battery pack bottom scraping test vehicle according to claim 4, characterized in that: The telescopic cylinder (4) comprises a turbine-worm structure having a turbine (402) and a worm (403), wherein the telescopic rod (401) has an external thread, the turbine (402) has a threaded hole, the turbine (402) is fitted on the telescopic rod (401) through the threaded hole and the external thread of the telescopic rod (401), the turbine (402) is fitted with the worm (403), and the worm (403) is connected to a motor.

6. The new energy vehicle battery pack bottom scraping test vehicle according to claim 5, characterized in that: A motor (5) is provided on the frame (1), and the worms (403) of the two telescopic cylinders (4) are respectively connected to the output shafts of the motor (5).

7. The new energy vehicle battery pack bottom scraping test vehicle according to claim 1, characterized in that: A plurality of mounting holes (201) are provided on the mounting plate (2) to accommodate the hanging of battery packs (6) of different specifications.

8. The new energy vehicle battery pack bottom scraping test vehicle according to claim 1, characterized in that: A rectangular weight-reducing hole (202) is provided in the central area of ​​the mounting plate (2).

9. The new energy vehicle battery pack bottom scraping test vehicle according to claim 1, characterized in that: A bumper collision test mechanism is provided at the front end of the frame (1), comprising an anti-collision longitudinal beam (7) and an anti-collision cross beam (8), wherein the anti-collision cross beam (8) is fixed to the front end of the anti-collision longitudinal beam (7).

10. The new energy vehicle battery pack bottom scraping test vehicle according to claim 9, characterized in that: The anti-collision longitudinal beam (7) is a collapsed structure.

Images