A lithium battery impact testing device

Abstract

The utility model relates to lithium battery drop test technical field, and disclose a kind of lithium battery impact test device, including base, be provided with impact plate on the base, the upper portion of impact plate is provided with portal frame, the inside of portal frame is respectively provided with one slide rail along longitudinal direction in two sides, each the slide rail is provided with a slider, two the slider between being provided with cross bar, the cross bar is provided with ball head seat, ball head seat is connected with the one end of ball head rod, the other end of ball head rod is provided with electromagnet, electromagnet is adsorbed and connected in one side of metal sheet, the other side of metal sheet is provided with patch, the patch is pasted on test battery, test battery does not occur overturning in the air in drop process, guarantee the impact situation of each test battery same, can carry out specific test to the impact point under different angles.

Description

Technical Field

[0001] This utility model relates to the field of lithium battery drop testing technology, specifically a lithium battery impact testing device. Background Technology

[0002] With the development of technology, lithium batteries are gradually being used in people's lives. As a commonly used energy material in the new energy field, lithium batteries have very active chemical properties, which means that safety performance tests must be carried out during the production and use of lithium batteries.

[0003] According to the Chinese Patent Publication No. CN206496882U, entitled "A Lithium Battery Height Adjustable Free Fall Test Device," the device includes a test chamber with an opening. It further includes a top cover that can be fixed to the opening. A gripping mechanism for gripping the lithium battery is provided at the bottom of the top cover. The gripping mechanism includes a gripping motor fixed to the bottom of the top cover, a power cylinder, and a gripping claw fixed to the gripping motor for gripping the lithium battery. The power cylinder is fixed to the gripping motor and located inside the gripping claw. A support block, reciprocating cylinders located on both sides of the support block, and a rigid test plate are provided at the bottom of the test chamber. The support block supports the rigid test plate, and the rigid test plate is connected to the reciprocating cylinders and reciprocates up and down within the test chamber under their action. During the drop test, the power cylinders provide different initial kinetic energy to the lithium battery when the gripping claw releases the battery, depending on the different heights. This drop test device can simultaneously test free falls from different heights and has the advantages of simplicity, convenience, and high efficiency.

[0004] The device performs drop tests by releasing a test battery from a height and causing it to fall onto an impact plate. However, during the drop, the test battery falls freely and flips in the air, resulting in different impact conditions for each test battery, making it impossible to perform specific tests for impact points at different angles. Utility Model Content

[0005] To address the shortcomings of existing technologies, the purpose of this invention is to provide a lithium battery impact testing device that prevents the test battery from flipping in the air during a drop, ensuring that the impact conditions of the battery are the same for each test, and enabling specific testing of impact points at different angles.

[0006] To solve the above-mentioned technical problems, this utility model provides the following technical solution:

[0007] A lithium battery impact testing device includes a base, an impact plate on the base, a gantry frame above the impact plate, a slide rail on each side of the interior of the gantry frame along the longitudinal direction, a slider on each slide rail, a crossbar between two sliders, a ball joint on the crossbar, a ball joint seat connected to one end of the ball joint rod, an electromagnet at the other end of the ball joint rod, the electromagnet being attracted and connected to one side of a metal sheet, and a patch on the other side of the metal sheet, the patch being attached to the test battery.

[0008] Preferably, both terminals of the electromagnet are connected to a brush via a wire, both brushes are fixedly connected to the slider, each brush is in contact with a slide bar, both slide bars are arranged vertically, and the upper ends of the two slide bars are respectively connected to the two poles of the power supply. The distance from the brush to the bottom of the slide bar is less than the distance from the test battery to the impact plate.

[0009] Preferably, a limiting post is provided below the crossbar, the distance from the crossbar to the top of the limiting post is greater than the distance from the brush to the bottom of the slider, and the distance from the crossbar to the top of the limiting post is less than the distance from the test battery to the impact plate.

[0010] Preferably, the ball head seat is threaded with a bolt, the end of which contacts the surface of the ball head rod.

[0011] Compared with the prior art, the beneficial effects achieved by this utility model are:

[0012] In use, the test battery is fixed in place. By rotating the test battery, the ball joint rotates within the ball joint until the test battery is rotated to the required testing angle. The crossbar is then pushed upwards until the test battery is moved to the drop test height. The crossbar is then released, allowing the test battery to fall. During the fall, because the test battery is fixed to the crossbar, it will not flip in the air, ensuring that the impact of the test battery is the same each time. This allows for specific tests to be performed on impact points at different angles. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0014] Figure 2 This is a schematic diagram of the wiring structure of the electromagnet of this utility model;

[0015] Figure 3 This is a schematic diagram of the internal structure of the ball head seat of this utility model.

[0016] The components include: 1. Base; 2. Impact plate; 3. Gantry frame; 4. Slide rail; 5. Slider; 6. Crossbar; 7. Ball joint seat; 8. Ball joint rod; 9. Electromagnet; 10. Metal sheet; 11. Patch; 12. Wire; 13. Brush; 14. Sliding bar; 15. Power supply; 16. Limiting post; 17. Bolt. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0018] This utility model provides the following technical solution:

[0019] Combination Figure 1 and Figure 2 As shown, this embodiment discloses a lithium battery impact testing device, including a base 1, an impact plate 2 on the base 1, a gantry 3 above the impact plate 2, a slide rail 4 longitudinally arranged on both sides inside the gantry 3, a slider 5 on each slide rail 4, a crossbar 6 between two sliders 5, a ball joint 7 on the crossbar 6, the ball joint 7 being connected to one end of a ball joint rod 8, and an electromagnet 9 at the other end of the ball joint rod 8. The electromagnet 9 is attracted and connected to one side of a metal sheet 10, and a patch 11 is arranged on the other side of the metal sheet 10, the patch 11 being attached to the test battery.

[0020] In use, a patch 11 is attached to the side of the test battery, and the metal plate 10 on the back of the patch 11 is placed at the bottom of the electromagnet 9. When the electromagnet 9 is energized, the metal plate 10 is attracted, thus fixing the test battery. By rotating the test battery, the ball joint 8 rotates within the ball joint seat 7 until the test battery is rotated to the required testing angle. The crossbar 6 is pushed upward, and the crossbar 6 slides upward on the slide rail 4 via the sliders 5 at both ends until the test battery is moved to the drop test height. Then, the crossbar 6 is released, allowing the test battery to fall. During the fall, because the test battery is fixed to the crossbar 6, it will not flip in the air, ensuring that the impact of the test battery is the same each time. This allows for specific tests to be performed on impact points at different angles.

[0021] Specifically, in combination Figure 1 and Figure 2As shown, both terminals of the electromagnet 9 are connected to a brush 13 via a wire 12. Both brushes 13 are fixedly connected to the slider 5. Each brush 13 is in contact with a slider 14. Both sliders 14 are arranged vertically, and their upper ends are connected to the two poles of the power supply 15. The distance from the brush 13 to the bottom of the slider 14 is less than the distance from the test battery to the impact plate 2.

[0022] After the metal piece 10 on the test battery is brought close to the electromagnet 9, the power supply 15 is energized. The current flows through the slider 14, brush 13, and wire 12 to connect with the electromagnet 9, causing the electromagnet 9 to attract the metal piece 10 and thus fix the test battery. During the test battery drop, the brush 13 slides on the slider 14, keeping the power supply 15 connected to the electromagnet 9 and maintaining the fixation of the test battery to prevent it from flipping. Since the distance from the brush 13 to the bottom of the slider 14 is less than the distance from the test battery to the impact plate 2, the brush 13 separates from the slider 14 before the test battery impacts, the electromagnet 9 is de-energized, and no longer fixes the test battery, thus preventing the electromagnet 9 from fixing the test battery during the impact and affecting the impact effect.

[0023] Specifically, in combination Figure 1 As shown, a limiting post 16 is provided below the crossbar 6. The distance from the crossbar 6 to the top of the limiting post 16 is greater than the distance from the brush 13 to the bottom of the slide bar 14, and the distance from the crossbar 6 to the top of the limiting post 16 is less than the distance from the test battery to the impact plate 2.

[0024] During the battery drop test, because the distance from the top of the horizontal bar 6 to the limit post 16 is greater than the distance from the brush 13 to the bottom of the slider 14, and the distance from the top of the horizontal bar 6 to the limit post 16 is less than the distance from the test battery to the impact plate 2, the brush 13 first separates from the slider 14, the electromagnet 9 is de-energized and no longer fixes the test battery, then the horizontal bar 6 contacts the limit post 16, throwing the test battery out, and finally the test battery hits the impact plate 2.

[0025] Specifically, in combination Figure 3 As shown, a bolt 17 is threaded onto the ball head seat 7, and the end of the bolt 17 is in contact with the surface of the ball head rod 8.

[0026] Rotating the test battery causes the ball head rod 8 to rotate within the ball head seat 7 until the test battery is rotated to the required testing angle. Then, by tightening the bolt 17, the end of the bolt 17 contacts the surface of the ball head rod 8, fixing the ball head seat 7 and the ball head rod 8 together. This prevents the test battery from flipping over during a drop due to insufficient friction between the ball head seat 7 and the ball head rod 8, which would affect the test results.

[0027] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations may be made to these embodiments without departing from the principles and spirit, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A lithium battery impact testing device, comprising a base (1), characterized in that: An impact plate (2) is provided on the base (1), and a gantry frame (3) is provided above the impact plate (2). A slide rail (4) is provided longitudinally on both sides of the inside of the gantry frame (3). A slider (5) is provided on each slide rail (4). A crossbar (6) is provided between two sliders (5). A ball head seat (7) is provided on the crossbar (6). The ball head seat (7) is connected to one end of a ball head rod (8). An electromagnet (9) is provided at the other end of the ball head rod (8). The electromagnet (9) is attracted and connected to one side of a metal sheet (10). A patch (11) is provided on the other side of the metal sheet (10). The patch (11) is attached to the test battery.

2. The lithium battery impact testing device according to claim 1, characterized in that: The two terminals of the electromagnet (9) are connected to a brush (13) through a wire (12). The two brushes (13) are fixedly connected to the slider (5). The two brushes (13) are in contact with a slider (14). The two sliders (14) are arranged vertically, and the upper ends of the two sliders (14) are connected to the two poles of the power supply (15). The distance from the brush (13) to the bottom of the slider (14) is less than the distance from the test battery to the impact plate (2).

3. The lithium battery impact testing device according to claim 2, characterized in that: A limiting post (16) is provided below the crossbar (6). The distance from the crossbar (6) to the top of the limiting post (16) is greater than the distance from the brush (13) to the bottom of the slider (14), and the distance from the crossbar (6) to the top of the limiting post (16) is less than the distance from the test battery to the impact plate (2).

4. The lithium battery impact testing device according to claim 1, characterized in that: A bolt (17) is threaded onto the ball head seat (7), and the end of the bolt (17) contacts the surface of the ball head rod (8).

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