New energy vehicle battery pack bottom scraping test vehicle

Abstract

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

[0002] The phenomenon of car bottom scraping is mainly caused by the sudden collapse of the front wheel during driving (when going over a bump or falling into a pit), which causes the car body to sink and contact the ground. The battery pack of new energy vehicles is installed at the bottom of the car, which is the place that needs to be protected. When the battery pack is suddenly hit by a scratch, whether it can ensure that the battery cells in the pack are not squeezed, deformed or broken is the standard for testing whether the bottom protection of the battery pack meets the requirements.

[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 test data. In addition, complex road conditions require long distances and are costly.

[0004] After searching, we found a patent document with application number 202311706474.3, which also involves the scraping bottom test of battery packs. The patent discloses a method and device for scraping bottom test of battery packs, wherein the device includes: a mounting frame and a trolley; the mounting frame is a door-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 bracket of the mounting frame is provided with a plurality of mounting brackets, which are used to be fixedly connected with the battery pack to be tested by bolts, and the battery pack to be tested is fixed 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 a connecting hole is provided on the other end of the second bracket, which is used to connect 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, which is used to adjust the height of the battery pack to be tested from the ground. This scheme can adapt to the battery packs of different cars and conduct the scraping bottom test of the battery pack to reduce the test cost and improve the rigor and integrity of the electric vehicle point safety test 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. Summary of the invention

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

[0007] In view of the above problems, the technical solution proposed by the present invention is: 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.

[0008] A hinge shaft is arranged between the front part of the mounting plate and the frame body, and the mounting plate can rotate around the hinge shaft.

[0009] Telescopic cylinders are respectively arranged on both sides of the frame, and telescopic rods of the two telescopic cylinders are respectively connected to both sides of the rear part of the mounting plate.

[0010] The telescopic cylinder is an electric telescopic cylinder.

[0011] The telescopic cylinder comprises 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 is sleeved on the telescopic rod through the threaded hole and cooperates with the external thread of the telescopic rod, the turbine cooperates with the worm, and the worm is connected to the motor.

[0012] A motor is arranged on the frame, and the worms of the two telescopic cylinders are respectively connected with the output shaft of the motor.

[0013] A plurality of mounting holes are provided on the mounting plate to accommodate hanging battery packs of different specifications.

[0014] A rectangular weight-reducing hole is arranged in the central area of ​​the mounting plate.

[0015] A bumper collision test mechanism is provided at the front end of the frame, which comprises 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.

[0016] The anti-collision longitudinal beam is a collapse structure. Beneficial Effects

[0017] 1. Without the need to set up complex road conditions, obstacles can be made to scratch and impact the bottom surface of the battery pack at various angles to obtain the required test data. Compared with the existing technology, it can significantly reduce facility costs and simplify test operations; 2. While being able to perform battery pack bottom scraping tests, it also has frontal collision test functions. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a three-dimensional schematic diagram of the test vehicle viewed from above; Figure 2 A simplified view of the test vehicle during testing; Figure 3 is a three-dimensional schematic diagram of the test vehicle when viewed from above; Figure 4 for Figure 3 A partial schematic diagram of Figure 5It is a three-dimensional schematic diagram of the turbine worm structure.

[0019] In the figure: 100, test vehicle; 1, frame; 2, mounting plate; 201, mounting hole; 202, weight reduction 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

[0020] The present invention will be further described below in conjunction with the accompanying drawings: Embodiment 1

[0021] like Figure 1 , 2 As shown, a new energy vehicle battery pack scraping bottom test vehicle includes a frame 1 of a test vehicle 100, and a mounting plate 2 for mounting a battery pack 6 is provided at the bottom of the frame 1, and 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 obstacles 9, so that the test vehicle 100 running at a set speed can cause obstacles 9 to scrape and impact the bottom surface of the battery pack 6 at various angles without setting 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, and 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 effect that meets the regulations. Compared with the prior art, it can significantly reduce facility costs and simplify test operations.

[0022] like Figure 2 As shown in FIG. 5 , a hinge shaft 3 is provided between the front of the mounting plate 2 and the frame body 1, and the mounting plate 2 can rotate around the hinge shaft 3. Telescopic cylinders 4 are provided on both sides of the frame body 1, and telescopic rods 401 of the two telescopic cylinders 4 are respectively connected to both sides of the rear of the mounting plate 2. In this way, by extending and retracting the telescopic rods 401, the mounting plate 2 is rotated around the hinge shaft 3 at the front end to adjust the angle of the mounting plate 2 relative to the ground, making the operation simple.

[0023] The telescopic cylinder 4 is an electric telescopic cylinder 4, which includes a turbine worm structure having a turbine 402 and a worm 403. The telescopic rod 401 has an external thread, and the turbine 402 has a threaded hole. The turbine 402 is sleeved on the telescopic rod 401 through the threaded hole and the external thread of the telescopic rod 401. The turbine 402 cooperates with the worm 403, and the worm 403 is connected to the motor 5 (preferably a servo motor). When used, the rotation of the worm 403 drives the rotation of the turbine 402, and the rotation of the turbine 402 drives the telescopic rod 401 to rotate up and down (the height does not change when the turbine 402 rotates). The use of the turbine worm structure can make the telescopic rod 401 have a locking function at any position, and will not automatically extend or retract due to the size of the impact force.

[0024] 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.

[0025] 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 .

[0026] A plurality of mounting holes 201 are provided on the mounting plate 2 to accommodate hanging battery packs 6 of different specifications.

[0027] A rectangular weight-reducing hole 202 is provided in the central area of ​​the mounting plate 2 to reduce the weight of the entire mounting plate 2 . Embodiment 2

[0028] like Figure 1 As shown, this embodiment is a further configuration of the first embodiment, that is, 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, and 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 bottom scraping test of the battery pack 6 while also having a frontal collision test function.

[0029] The anti-collision longitudinal beam 7 is a collapse structure capable of absorbing impact kinetic energy.

[0030] The above embodiments are only used to more clearly describe the present invention and cannot be regarded as limiting the protection scope of the present invention. Any modifications in equivalent forms should be regarded as falling within the protection scope of 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 scraping bottom 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 scraping bottom test vehicle according to claim 2, characterized in that: Telescopic cylinders (4) are respectively provided on both sides of the frame body (1), and telescopic rods (401) of the two telescopic cylinders (4) are respectively connected to both sides of the rear of the mounting plate (2).

4. The new energy vehicle battery pack scraping bottom 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 scraping bottom 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 sleeved on the telescopic rod (401) through the threaded hole and the external thread of the telescopic rod (401), the turbine (402) cooperates with the worm (403), and the worm (403) is connected to a motor.

6. The new energy vehicle battery pack scraping bottom 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 shaft of the motor (5).

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

8. The new energy vehicle battery pack scraping bottom 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 scraping bottom 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 scraping bottom testing vehicle according to claim 1, characterized in that: The anti-collision longitudinal beam (7) is a collapsed structure.

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