A battery pack drop testing device

Abstract

The utility model belongs to the field of battery pack detection, specifically is a battery pack drop test device, including the box, the inside installation of box has the transportation subassembly, the equipment box is installed in the transportation subassembly middle part, the equipment box middle part is equipped with the drop subassembly, the equipment box top rotatory connection has the pivot, the pivot middle part is fixedly connected with a pair of connecting rod, a pair The connecting rod is vertically arranged, the connecting rod middle part is equipped with the screw rod, the screw rod bottom rotatory connection has the connecting frame, one of The connecting frame inside is equipped with the first clamp, the worm can make the pivot along the worm gear rotation and switch to a pair of connecting rod, realize the quick replacement between the device to the first clamp, the second clamp, improve the device to the battery pack drop when the different simulation situation's fixed flexibility and convenience, shorten the time required for the first clamp, the second clamp switch.

Description

Technical Field

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

[0002] Battery packs are core components of electric vehicles and other devices, used to store and provide electrical energy. They typically consist of multiple cells connected in series or parallel to form battery modules, which are then integrated with components such as battery management systems, thermal management systems, and housings.

[0003] Battery packs typically undergo drop testing during production. The main purpose of drop testing is to simulate the drop conditions that battery packs may encounter during transportation, storage, and use, and to evaluate their safety and performance stability under drop impact.

[0004] In existing drop tests, battery packs are typically fixed in different positions using various clamps to simulate drops in horizontal or tilted positions. However, during use and observation, it has been found that changing clamps usually requires disassembling the previous clamp and installing the new one, which makes the clamp replacement operation quite cumbersome.

[0005] Therefore, a battery pack drop test device is proposed to address the above problems. Utility Model Content

[0006] In order to overcome the shortcomings of the prior art, at least one technical problem raised in the background art is solved.

[0007] The technical solution adopted by this utility model to solve its technical problem is as follows: A battery pack drop test device of this utility model includes a housing, inside which a transport component is installed; an equipment box is installed in the middle of the transport component; a drop test component is provided in the middle of the equipment box; a rotating shaft is rotatably connected to the top of the equipment box; a pair of connecting rods are fixedly connected to the middle of the rotating shaft; the pair of connecting rods are vertically arranged; a screw is threadedly connected to the middle of the connecting rod; a connecting frame is rotatably connected to the bottom of the screw; a first clamp is provided inside one of the connecting frames; a second clamp is provided inside the other connecting frame. The device includes a clamp; a pair of limiting plates are fixedly connected to the top of the connecting frame; the limiting plates and the connecting rods are slidably connected; a worm gear is fixedly connected to the middle of the rotating shaft; a worm is rotatably connected to the top of the equipment box; the worm and the worm gear are meshed; a connecting plate is fixedly connected to one end of the worm; a handle is fixedly connected to the middle of the connecting plate; rotating the worm allows the rotating shaft to rotate with the worm gear and switch the pair of connecting rods, enabling the device to quickly change between the first clamp and the second clamp, improving the flexibility and convenience of fixing the device under different simulated battery pack drop conditions, and shortening the time required to switch between the first clamp and the second clamp.

[0008] Preferably, the second clamp includes a first pressure plate; the first pressure plate and the connecting frame are fixedly connected; the first clamp includes a pair of second pressure plates; the second pressure plates and the connecting frame are rotatably connected; the second pressure plates and the connecting frame are connected by a torsion spring; through the cooperation of the first pressure plate and the second pressure plate, the battery pack is quickly fixed under the squeezing action of the first pressure plate and the second pressure plate, shortening the working time required to fix the battery pack.

[0009] Preferably, a plurality of flexible pads are fixedly connected to the middle of the first pressure plate; the surface of the flexible pads is an arc-shaped structure; when the first pressure plate comes into contact with the battery pack, the flexible pads also come into contact with the surface of the battery pack. Because the flexible pads are made of flexible materials, when the flexible pads come into contact with the battery pack, they disperse the pressure on the surface of the battery pack caused by compression, thereby reducing the damage to the surface of the battery pack caused by compression.

[0010] Preferably, a plurality of elastic wires are fixed between a pair of second pressure plates; the elastic wires are equidistant; the second pressure plates will rotate and move away from each other under the squeezing action of the battery pack, and the elastic wires will be in a stretched state as the second pressure plates move away. The elastic wires will squeeze the edges and corners of the battery pack and adapt to the angle profile of the battery pack, increasing the contact area between the second pressure plates and the battery pack and improving the stability of the second pressure plates in fixing the battery pack.

[0011] Preferably, the drop assembly includes a cylinder; the cylinder is located inside the equipment box and is fixedly connected to the equipment box; a transmission frame is hinged to the output end of the cylinder; the transmission frame and the equipment box are rotatably connected; a support plate is fixedly connected to the end of the transmission frame; when the battery pack is fixed, it will be on the surface of the support plate. After the battery pack is fixed, the operator can control the cylinder to pull the transmission frame, causing the transmission frame to rotate along the equipment box. The support plate will change angle as the transmission frame rotates, causing the battery pack to slide along the surface of the support plate and fall off, thus realizing the device's rapid simulation of the battery pack falling.

[0012] Preferably, the surface of the support plate has a groove; the groove is a frustum structure; because the surface of the support plate has a groove, when the battery pack is placed on the surface of the support plate, it will be inside the groove, so that the battery pack will be temporarily fixed on the top of the support plate, which facilitates the subsequent fixing operation of the battery pack.

[0013] Preferably, a counterweight is fixedly connected to the middle of the handle; the counterweight is located on one side of the connecting plate; the handle will be at the bottom of the connecting plate and remain stable under the weight of the counterweight. When the worm drives the worm wheel to rotate, causing the shaft to switch to the connecting rod, the handle will be at the bottom of the connecting plate under the gravity of the counterweight, thus improving the stability of the handle itself.

[0014] Preferably, the end of the second pressure plate is inclined; because the end of the second pressure plate is inclined, the second pressure plate will separate better when the battery pack and the second pressure plate come into contact, thereby improving the stability of the second pressure plate in squeezing and fixing the battery pack.

[0015] The advantages of this utility model are:

[0016] 1. The battery pack drop test device of this utility model allows the rotating shaft to rotate with the worm gear and switch a pair of connecting rods by rotating the worm gear, so as to realize the quick replacement between the first clamp and the second clamp of the device, improve the flexibility and convenience of fixing the device under different simulated conditions of battery pack drop, and shorten the time required to switch the first clamp and the second clamp.

[0017] 2. The battery pack drop test device of this utility model, through the cooperation of the first pressure plate and the second pressure plate, enables the battery pack to be quickly fixed under the squeezing action of the first pressure plate and the second pressure plate, thereby shortening the working time required to fix the battery pack. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the main body of this utility model;

[0020] Figure 2 This is a schematic diagram of the structure of the rotating shaft in this utility model;

[0021] Figure 3 This is a schematic diagram of the worm gear in this utility model;

[0022] Figure 4 This is a schematic diagram of the transmission frame in this utility model;

[0023] Figure 5 This is a schematic diagram of the support plate in this utility model.

[0024] In the diagram: 1. Box body; 12. Transport component; 13. Equipment box; 14. Rotary shaft; 15. Connecting rod; 16. Screw; 17. Limiting plate; 18. Worm gear; 19. Worm; 110. Connecting plate; 111. Handle; 112. Drop assembly; 113. Connecting frame; 114. First clamp; 115. Second clamp; 2. First pressure plate; 22. Second pressure plate; 3. Flexible pad; 4. Elastic wire; 5. Cylinder; 52. Transmission frame; 53. Support plate; 6. Groove; 7. Counterweight. Detailed Implementation

[0025] 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 scope of protection of the present utility model.

[0026] Specific implementation examples are given below.

[0027] Please see Figures 1 to 5As shown in the figure, a battery pack drop test device according to an embodiment of the present invention includes a housing 1, inside which a transport assembly 12 is installed; an equipment box 13 is installed in the middle of the transport assembly 12; a drop assembly 112 is provided in the middle of the equipment box 13; a rotating shaft 14 is rotatably connected to the top of the equipment box 13; a pair of connecting rods 15 are fixedly connected to the middle of the rotating shaft 14; the pair of connecting rods 15 are vertically arranged; a screw 16 is threadedly connected to the middle of the connecting rod 15; a connecting frame 113 is rotatably connected to the bottom of the screw 16; one of the connecting frames 113 is provided with a first clamp 114 inside; the other connecting frame... The connecting frame 113 is equipped with a second clamp 115 inside; a pair of limiting plates 17 are fixedly connected to the top of the connecting frame 113; the limiting plates 17 and the connecting rod 15 are slidably connected; a worm gear 18 is fixedly connected to the middle of the rotating shaft 14; a worm 19 is rotatably connected to the top of the equipment box 13; the worm 19 and the worm gear 18 are meshed; a connecting plate 110 is fixedly connected to one end of the worm 19; a handle 111 is fixedly connected to the middle of the connecting plate 110; during operation, the battery pack can be placed on the surface of the drop assembly 112, and then the screw 16 can be rotated to make the connecting frame 113, along with the second clamp 115, move closer to the battery pack, and the second clamp 115 will clean its surface. When the connecting frame 113 is fixed, it will be limited by the limiting plate 17 and the connecting rod 15 when it moves. After it is fixed, it can be moved by the drop assembly 112 and detached from the battery pack. The battery pack will fall under the action of gravity and collide with the bottom of the box 1. Then, the staff can use a multimeter to check its corresponding parameters. Then, another set of battery packs can be placed on the surface of the reset drop assembly 112. Turning the handle 111 will cause the connecting plate 110 to drive the worm gear 19 to rotate. The worm gear 19 will mesh with the worm wheel 18 to make the rotating shaft 14 rotate. When the rotating shaft 14 rotates, it will switch the positions of a pair of connecting rods 15 until... The first clamp 114 is positioned above the drop assembly 112. The operator can then rotate the battery pack so that its corners contact the drop assembly 112 and the first clamp 114 respectively, until the battery pack is secured. This process can be repeated to cause the battery pack to drop and be detected. Rotating the worm gear 19 causes the shaft 14 to rotate with the worm wheel 18, switching between a pair of connecting rods 15. This allows for rapid replacement of the first clamp 114 and the second clamp 115, improving the flexibility and convenience of securing the battery pack under different simulated drop conditions and shortening the time required to switch between the first clamp 114 and the second clamp 115.

[0028] Please see Figure 2 and Figure 3As shown, the second clamp 115 includes a first pressure plate 2; the first pressure plate 2 and the connecting frame 113 are fixedly connected; the first clamp 114 includes a pair of second pressure plates 22; the second pressure plates 22 and the connecting frame 113 are rotatably connected; the second pressure plates 22 and the connecting frame 113 are connected by a torsion spring; when the operator fixes the battery pack using the second clamp 115, the first pressure plate 2 will contact the battery pack and press its surface, while when the first clamp 114 fixes the battery pack, the second pressure plates 22 will contact both sides of the battery pack and rotate under the pressing action, the torsion spring will be in a compressed state, and the second pressure plates 22 will press both sides of the battery pack under the elastic force of the torsion spring, so that the battery pack will be fixed on the surface of the drop assembly 112; through the cooperation of the first pressure plate 2 and the second pressure plate 22, the battery pack will be quickly fixed under the pressing action of the first pressure plate 2 and the second pressure plate 22, shortening the working time required to fix the battery pack.

[0029] Please see Figure 3 As shown, a plurality of flexible pads 3 are fixedly connected to the middle of the first pressure plate 2; the surface of the flexible pad 3 is an arc-shaped structure; when the first pressure plate 2 comes into contact with the battery pack, the flexible pad 3 will also come into contact with the surface of the battery pack. Because the flexible pad 3 is a flexible material, when the flexible pad 3 comes into contact with the battery pack, it will disperse the pressure on the surface of the battery pack caused by the compression, and reduce the damage to the surface of the battery pack caused by the compression.

[0030] Please see Figure 3 As shown, a plurality of elastic wires 4 are fixed between a pair of second pressure plates 22; the elastic wires 4 are equidistantly arranged; the second pressure plates 22 will rotate and move away from each other under the squeezing action of the battery pack, and the elastic wires 4 will be in a stretched state as the second pressure plates 22 move away. The elastic wires 4 will squeeze the edges and corners of the battery pack and adapt to the angle profile of the battery pack, increasing the contact area between the second pressure plates 22 and the battery pack, and improving the stability of the second pressure plates 22 in fixing the battery pack.

[0031] Please see Figure 4 and Figure 5 As shown, the drop assembly 112 includes a cylinder 5; the cylinder 5 is located inside the equipment box 13 and is fixedly connected to the equipment box 13; the output end of the cylinder 5 is hinged to a transmission frame 52; the transmission frame 52 and the equipment box 13 are rotatably connected; a support plate 53 is fixedly connected to the end of the transmission frame 52; when the battery pack is fixed, it will be on the surface of the support plate 53. After the battery pack is fixed, the operator can control the cylinder 5 to pull the transmission frame 52, causing the transmission frame 52 to rotate along the equipment box 13. The support plate 53 will change its angle as the transmission frame 52 rotates, causing the battery pack to slide along the surface of the support plate 53 and fall off, thus realizing the device's rapid simulation of the battery pack falling.

[0032] Please see Figure 5 As shown, the support plate 53 has a groove 6 on its surface; the groove 6 is a frustum structure; because the support plate 53 has a groove 6 on its surface, the battery pack will be placed inside the groove 6 when it is placed on the surface of the support plate 53, so that the battery pack will be temporarily fixed on the top of the support plate 53, which facilitates the subsequent fixing operation of the battery pack.

[0033] Please see Figure 3 As shown, a counterweight 7 is fixedly connected to the middle of the handle 111; the counterweight 7 is located on one side of the connecting plate 110; the handle 111 will be at the bottom of the connecting plate 110 and remain stable under the weight of the counterweight 7. When the worm gear 19 drives the worm wheel 18 to rotate, causing the rotating shaft 14 to switch the connecting rod 15, the handle 111 will be at the bottom of the connecting plate 110 under the gravity of the counterweight 7, thus improving the stability of the handle 111 itself.

[0034] Please see Figure 3 As shown, the end of the second pressure plate 22 is inclined; because the end of the second pressure plate 22 is inclined, when the battery pack and the second pressure plate 22 come into contact, the second pressure plate 22 will separate better, improving the stability of the second pressure plate 22 in squeezing and fixing the battery pack.

[0035] Working principle: The battery pack is placed on the surface of the drop assembly 112. Then, the screw 16 is rotated, causing the connecting frame 113, along with the second clamp 115, to move closer to the battery pack. The second clamp 115 fixes the surface of the battery pack. When the connecting frame 113 moves, it is limited by the limiting plate 17 and the connecting rod 15. After fixing, the drop assembly 112 can be used to move the battery pack and detach it from the battery pack. The battery pack will fall under the influence of gravity and collide with the bottom of the housing 1. Then, the operator can use a multimeter to test the corresponding parameters. Then, another battery pack can be placed on the reset surface of the drop assembly 112. Turning the handle 111 causes the connecting plate 110 to drive the worm gear 19 to rotate. The worm gear 19 will then interact with the worm... When wheel 18 engages, shaft 14 rotates. The rotation of shaft 14 causes the positions of a pair of connecting rods 15 to switch until the first clamp 114 is above the drop assembly 112. Then, the operator can rotate the battery pack so that its corners contact the drop assembly 112 and the first clamp 114 respectively, until the battery pack is secured. The above steps can then be repeated to cause the battery pack to drop and be detected. When the operator secures the battery pack using the second clamp 115, the first pressure plate 2 contacts the battery pack and presses its surface. When the first clamp 114 secures the battery pack, the second pressure plate 22 contacts both sides of the battery pack and rotates under the pressure, compressing the torsion spring. The pressure plate 22, under the action of the torsion spring, presses both sides of the battery pack, thus fixing the battery pack to the surface of the drop assembly 112. When the first pressure plate 2 contacts the battery pack, the flexible pad 3 also contacts the surface of the battery pack. Because the flexible pad 3 is a flexible material, it disperses the pressure on the surface of the battery pack caused by the compression. Under the compression of the battery pack, the second pressure plate 22 rotates and moves away from each other. The elastic wire 4 is stretched as the second pressure plate 22 moves away, and it compresses the edges and corners of the battery pack to adapt to the angle profile of the battery pack, increasing the contact area between the second pressure plate 22 and the battery pack. When the battery pack is fixed, it is on the surface of the support plate 53. After the battery pack is fixed, the operation... Personnel can control cylinder 5 to pull transmission frame 52, causing transmission frame 52 to rotate along equipment box 13. The support plate 53 will change angle as transmission frame 52 rotates, causing battery pack to slide and fall off along the surface of support plate 53. Because the surface of support plate 53 has groove 6, the battery pack will be placed inside the groove 6 when placed on the surface of support plate 53, so that the battery pack will be temporarily fixed to the top of support plate 53. Handle 111 will be at the bottom of connecting plate 110 and remain stable under the weight of counterweight 7. When worm gear 19 drives worm wheel 18 to rotate, causing shaft 14 to switch to connecting rod 15, handle 111 will be at the bottom of connecting plate 110 under the gravity of counterweight 7.Because the end of the second pressure plate 22 is inclined, the second pressure plate 22 can separate more easily when the battery pack comes into contact with it.

[0036] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A battery pack drop test device, comprising a housing (1), characterized in that: The housing (1) is equipped with a transport assembly (12); the transport assembly (12) is equipped with an equipment box (13) in the middle; the equipment box (13) is equipped with a drop assembly (112) in the middle; the top of the equipment box (13) is rotatably connected to a rotating shaft (14); a pair of connecting rods (15) are fixedly connected to the middle of the rotating shaft (14); the pair of connecting rods (15) are vertically arranged; a screw (16) is threadedly connected to the middle of the connecting rod (15); a connecting frame (113) is rotatably connected to the bottom of the screw (16); one of the connecting frames (113) is equipped with a drop assembly (112) inside. There is a first clamp (114); another connecting frame (113) is provided with a second clamp (115); a pair of limiting plates (17) are fixedly connected to the top of the connecting frame (113); the limiting plates (17) and the connecting rod (15) are slidably connected; a worm gear (18) is fixedly connected to the middle of the rotating shaft (14); a worm (19) is rotatably connected to the top of the equipment box (13); the worm (19) and the worm gear (18) are meshed; a connecting plate (110) is fixedly connected to one end of the worm (19); a handle (111) is fixedly connected to the middle of the connecting plate (110).

2. The battery pack drop test device according to claim 1, characterized in that: The second clamp (115) includes a first pressure plate (2); the first pressure plate (2) and the connecting frame (113) are fixedly connected; the first clamp (114) includes a pair of second pressure plates (22); the second pressure plates (22) and the connecting frame (113) are rotatably connected; the second pressure plates (22) and the connecting frame (113) are connected by a torsion spring.

3. The battery pack drop test device according to claim 2, characterized in that: Multiple flexible pads (3) are fixed to the middle of the first pressure plate (2); the surface of the flexible pads (3) is an arc-shaped structure.

4. The battery pack drop test device according to claim 3, characterized in that: A plurality of elastic wires (4) are fixedly connected between a pair of second pressure plates (22); the elastic wires (4) are arranged at equal intervals.

5. A battery pack drop test device according to claim 4, characterized in that: The drop assembly (112) includes a cylinder (5); the cylinder (5) is located inside the equipment box (13) and is fixedly connected to the equipment box (13); the output end of the cylinder (5) is hinged to a transmission frame (52); the transmission frame (52) and the equipment box (13) are rotatably connected; a support plate (53) is fixedly connected to the end of the transmission frame (52).

6. The battery pack drop test device according to claim 5, characterized in that: The support plate (53) has a groove (6) on its surface; the groove (6) is a frustum structure.

7. A battery pack drop test device according to claim 6, characterized in that: A counterweight (7) is fixedly connected to the middle of the handle (111); the counterweight (7) is located on one side of the connecting plate (110).

8. A battery pack drop test device according to claim 7, characterized in that: The end of the second pressure plate (22) is inclined.

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