Battery pack bottom collision experiment device

Abstract

The utility model relates to a battery pack bottom collision experiment device, which comprises a mounting base and a sleeve arranged on the outer side of the mounting base, fixed interfaces are annularly arranged on the outer side of one end of the sleeve at equal intervals, and movable parts matched with the fixed interfaces for rotary adjustment are mounted on the inner side of the sleeve. The movable seat stand, the positioning rod and the collision test blocks are matched with the movable groove, the buckling groove and the reset spring, when the device is matched with the battery pack to carry out a collision experiment, the movable seat stand, the positioning rod and the collision test blocks are matched with the movable groove, the buckling groove and the reset spring, and the movable seat stand, the positioning rod and the collision test blocks are matched with the movable groove, the buckling groove and the reset spring. A worker can connect the positioning rods on the outer side of the movable seat stand with the catching grooves at different positions, so that one ends, with different shapes, of the collision test block respectively face the battery pack to carry out collision tests, the types of experimental data are increased, the subsequent worker can systematically, scientifically and comprehensively evaluate the safety of the battery pack, and potential safety hazards in the using process are reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of battery collision experiments, in particular to a battery pack bottom collision experiment device. Background Art

[0002] The battery pack bottom collision test is one of the important links in the safety assessment of electric vehicles. Its purpose is to test the safety performance of the battery pack when a collision occurs at the bottom of the vehicle. The experiment will specify the collision speed, angle and other conditions to simulate possible collision situations in the real environment. The experiment will evaluate the structural integrity of the battery pack after the collision, and whether there is any cracking, deformation, leakage, etc.

[0003] The collision device used in the existing battery pack bottom collision test generally has an arc-shaped surface. When conducting a collision experiment with the bottom of the battery pack, it can only simulate the situation where the battery pack collides with a smooth object surface. It has limitations and cannot fully simulate the collision between other shapes of foreign objects that may exist in the real environment and the bottom of the battery pack, which affects the safety assessment of the battery pack and makes the battery pack prone to safety hazards, which is very dangerous. Utility Model Content

[0004] Based on the above description, the utility model provides a battery pack bottom collision test device to solve the problem that the existing battery pack test collision device simulates a relatively single collision condition during the collision test.

[0005] The technical solution of the utility model to solve the above-mentioned technical problems is as follows: a battery pack bottom collision test device, comprising a mounting base and a sleeve arranged on the outside of the mounting base, the outer side of one end of the sleeve is provided with fixed interfaces in a ring shape and at equal distances, the inner side of the sleeve is provided with a movable part that cooperates with the fixed interface for rotation adjustment, a reset spring that supports the movable part and the fixed interface to be buckled and fixed is arranged between the movable part and the sleeve, and a collision test block composed of different shapes is arranged on the outer side of the movable part.

[0006] On the basis of the above technical solution, the present invention can also be improved as follows.

[0007] Furthermore, a shock-absorbing layer and a threaded column are respectively arranged at the center of both sides of the mounting base, and the surface of the mounting base is provided with mounting holes arranged in a circular shape and at equal distances at the edge of the shock-absorbing layer.

[0008] Furthermore, a thread groove is provided at the center of one end of the sleeve, and a movable groove is provided at the center of the other end. The sleeve is threadedly connected to the outside of the threaded column through the thread groove, and an annular handle is provided at one end of the outside of the sleeve close to the mounting base.

[0009] Furthermore, the fixing interface is composed of a buckle groove, which is L-shaped, and the buckle groove is opened at one end of the outer side of the sleeve away from the mounting base and is connected to the movable groove.

[0010] Furthermore, the movable part is composed of a movable seat and a positioning rod. The movable seat is installed on one end of the inner wall of the sleeve away from the mounting base and covers the buckle groove. The positioning rod is arranged in a circular shape at equal distances on the outside of the movable seat and is installed in one end of the buckle groove.

[0011] Furthermore, the return spring is installed between the movable base and one end of the inner wall of the movable groove, and the surface of the return spring fits the inner wall of the movable groove.

[0012] Furthermore, the impact test block is arranged on a side of the movable platform away from the mounting base, and the impact test block is triangular in shape, with one end being an acute-angle protrusion and the other two ends being a curved surface and a flat surface respectively.

[0013] Compared with the prior art, the technical solution of this application has the following beneficial technical effects:

[0014] The utility model uses a movable seat, a positioning rod and a collision test block, in conjunction with a movable groove, a buckle groove and a reset spring. When the device cooperates with a battery pack to carry out a collision test, a staff member can connect the positioning rod on the outer side of the movable seat with the buckle grooves at different positions, so that one end of the collision test block with different shapes is respectively directed toward the battery pack for collision test. When the positioning rod is connected to the buckle groove, the reset spring is in a compressed state, and the positioning rod is pushed to be stably connected with the buckle groove through the rebound force, so as to avoid loosening of the collision test block caused by the battery pack colliding with the collision test block and affecting the test result. The presentation of end faces of different shapes of the collision test block during the test process can cooperate with the battery pack to fully simulate collision conditions in different environments, increase the types of experimental data, and facilitate subsequent staff to systematically, scientifically and comprehensively evaluate the safety of the battery pack, and reduce safety hazards during use. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 A schematic diagram of the structure of a battery pack bottom collision test device provided by an embodiment of the utility model;

[0016] Figure 2 It is a schematic diagram of the exploded structure of the movable base and the sleeve in the embodiment of the utility model;

[0017] Figure 3 It is a schematic diagram of the exploded structure of the mounting base and the sleeve in the embodiment of the utility model;

[0018] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0019] 1. Mounting base; 11. Mounting hole; 12. Shock-absorbing layer; 13. Threaded column; 2. Sleeve; 21. Threaded groove; 22. Movable groove; 3. Buckle groove; 4. Ring handle; 5. Reset spring; 6. Movable seat; 7. Positioning rod; 8. Impact test block. DETAILED DESCRIPTION

[0020] In order to facilitate understanding of the present application, the present application will be described more fully below with reference to the relevant drawings. Embodiments of the present application are provided in the drawings. However, the present application can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present application more thorough and comprehensive.

[0021] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which this application belongs. The terms used herein in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application.

[0022] See also Figure 1-3 The battery pack bottom collision test device of the utility model comprises a mounting base 1 and a sleeve 2 arranged on the outside of the mounting base 1, the outer side of one end of the sleeve 2 is provided with fixed interfaces in a ring shape and at equal distances, a movable part which cooperates with the fixed interface for rotation adjustment is installed on the inner side of the sleeve 2, a return spring 5 which supports the movable part and the fixed interface to be buckled and fixed is arranged between the movable part and the sleeve 2, and a collision test block 8 composed of different shapes is arranged on the outer side of the movable part.

[0023] See also Figure 3 A shock-absorbing layer 12 and a threaded column 13 are respectively arranged at the center of both sides of the mounting base 1. The shock-absorbing layer 12 can reduce the impact force transmitted to the ground by the mounting base 1. The surface of the mounting base 1 is provided with mounting holes 11 arranged in a circular shape and at equal distances at the edge of the shock-absorbing layer 12.

[0024] See also Figure 3 A threaded groove 21 is provided at the center of one end of the sleeve 2, and a movable groove 22 is provided at the center of the other end. The sleeve 2 is threadedly connected to the outside of the threaded column 13 through the threaded groove 21. An annular handle 4 is provided at the end of the outer side of the sleeve 2 close to the mounting base 1. The sleeve 2 can be rotated on the outside of the threaded column 13 by a threaded connection to move vertically, so as to achieve the purpose of adjusting the height, so as to adapt to the collision test of battery packs with different installation heights. The fixing interface is composed of a buckle groove 3, and the buckle groove 3 is L-shaped. The buckle groove 3 is provided at one end of the outer side of the sleeve 2 away from the mounting base 1 and is connected to the movable groove 22. The buckle groove 3 is equidistant in a ring shape with the center of the sleeve 2 as the center point. There are three buckle grooves 3, which correspond to the shape of the collision test block 8.

[0025] See also Figure 2When the movable base 6 is connected to the inner wall of the sleeve 2, the movable base 6 is installed at one end of the inner wall of the sleeve 2 away from the mounting base 1 and covers the buckle groove 3. The positioning rods 7 are arranged in a circular shape with equal distances on the outer side of the movable base 6 and are installed in one end of the buckle groove 3. When the movable base 6 is reconnected with the buckle groove 3 at other positions through the positioning rods 7, the rotation angle of the outer end face of the collision test block 8 can be limited, so that the end faces of different shapes can be rotated to a fixed position to cooperate with the battery pack for collision test, avoiding the deviation of the collision test block 8 and ensuring the test effect. The reset spring 5 is installed between the movable base 6 and one end of the inner wall of the movable groove 22. The surface of the reset spring 5 fits the inner wall of the movable groove 22. When the positioning rod 7 on the outer side of the movable base 6 is connected to one end of the buckle groove 3, the reset spring 5 is in a compressed state, which can support the positioning rod 7 and the buckle groove 3 to be stably buckled by the rebound force, increase the connection strength and stability of the movable base 6, and avoid the battery pack collision The test block 8 is loose and affects the test results.

[0026] See also Figure 1 The collision test block 8 is arranged on a side of the movable seat 6 away from the mounting base 1. The collision test block 8 is triangular in shape, with one end being an acute-angle protrusion, and the other two ends being an arc surface and a plane, respectively. The different shapes of the outer side of the collision test block 8 can cooperate with the battery pack to simulate collision conditions in different environments and increase the collection of experimental data.

[0027] When it is necessary to adjust the end face of the impact test block 8, first rotate the movable seat 6 to move the positioning rod 7 out of one end of the buckle groove 3. At this time, the positioning rod 7 loses the restriction of the buckle groove 3, and the reset spring 5 can push the movable seat 6 to the outside of the movable groove 22 through the rebound force, and then take the movable seat 6 out of the movable groove 22, rotate the movable seat 6, and face the end face of the impact test block 8 that needs to be collided with the battery pack, align the positioning rod 7 with the buckle groove 3, insert the movable seat 6 and the positioning rod 7 into the movable groove 22 and the buckle groove 3 at the same time to squeeze the reset spring 5 until the positioning rod 7 moves to the bending part of the buckle groove 3, rotate the movable seat 6, and insert the positioning rod 7 into the closed end of the buckle groove 3. The rebound force of the reset spring 5 will push the positioning rod 7 to be fixed in the buckle groove 3, thereby reinforcing the movable seat 6 and the impact test block 8.

[0028] When used herein, the singular forms "a", "an", and "said / the" may also include plural forms, unless the context clearly indicates otherwise. It should also be understood that the terms "include / comprise" or "have" etc. specify the presence of stated features, wholes, steps, operations, components, parts or combinations thereof, but do not exclude the possibility of the presence or addition of one or more other features, wholes, steps, operations, components, parts or combinations thereof.

[0029] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A battery pack bottom collision test device, comprising a mounting base (1) and a sleeve (2) arranged outside the mounting base (1), characterized in that: The outer side of one end of the sleeve (2) is provided with fixed interfaces at equal distances in an annular shape, and a movable part is installed on the inner side of the sleeve (2) for rotating and adjusting in cooperation with the fixed interface. A return spring (5) is provided between the movable part and the sleeve (2) for supporting the movable part to be buckled and fixed to the fixed interface, and a collision test block (8) of different shapes is provided on the outer side of the movable part.

2. The battery pack bottom collision test device according to claim 1, characterized in that: A shock-absorbing layer (12) and a threaded column (13) are respectively arranged at the center of both sides of the mounting base (1), and mounting holes (11) arranged in a circular shape and at equal distances are opened on the surface of the mounting base (1) at the edge of the shock-absorbing layer (12).

3. The battery pack bottom impact test device according to claim 2, characterized in that: A thread groove (21) is provided at the center of one end of the sleeve (2), and a movable groove (22) is provided at the center of the other end. The sleeve (2) is threadedly connected to the outside of the threaded column (13) through the thread groove (21). An annular handle (4) is provided at one end of the outside of the sleeve (2) close to the mounting base (1).

4. The battery pack bottom impact test device according to claim 3, characterized in that: The fixing interface is composed of a buckle groove (3), the buckle groove (3) is L-shaped, the buckle groove (3) is arranged on the outer side of the sleeve (2) at one end away from the mounting base (1), and is connected to the movable groove (22).

5. The battery pack bottom impact test device according to claim 4, characterized in that: The movable part is composed of a movable seat (6) and a positioning rod (7); the movable seat (6) is installed on the inner wall of the sleeve (2) at one end away from the mounting base (1) and covers the buckle groove (3); the positioning rod (7) is arranged in a ring shape at equal distances on the outside of the movable seat (6) and is installed in one end of the buckle groove (3).

6. The battery pack bottom impact test device according to claim 5, characterized in that: The return spring (5) is installed between the movable seat (6) and one end of the inner wall of the movable groove (22), and the surface of the return spring (5) is in contact with the inner wall of the movable groove (22).

7. The battery pack bottom impact test device according to claim 5, characterized in that: The impact test block (8) is arranged on a side of the movable seat (6) away from the mounting base (1); the impact test block (8) is triangular in shape, with one end being an acute-angle protrusion and the other two ends being a curved surface and a flat surface, respectively.

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