Clamp for detecting lithium battery pack

Abstract

The utility model discloses a lithium battery pack detection clamp, which comprises a bearing mechanism, a first clamping mechanism, a second clamping mechanism and a driving mechanism, and is characterized in that the bearing mechanism comprises a bearing table; the first clamping mechanism comprises a backup plate arranged on the bearing table, and the backup plate is provided with a limiting groove used for containing the lithium battery pack. The second clamping mechanism comprises a binding band, a through hole for the binding band to penetrate through is formed between every two adjacent limiting grooves, and the binding band is used for abutting against the lithium battery pack; the lithium battery pack detection device has the beneficial effects that the lithium battery pack can be effectively fixed through the design of the limiting groove and the binding band, the situations of shaking, moving and the like of the lithium battery pack in the detection process are prevented, the binding band is in flexible contact with the lithium battery pack, the binding band is in flexible contact with the lithium battery pack, and the lithium battery pack is not prone to being damaged. The possibility that the lithium battery pack is damaged is reduced, and the detection precision is improved.

Description

Technical Field

[0001] This application relates to the field of lithium batteries, specifically to a fixture for testing lithium battery packs. Background Technology

[0002] A lithium battery is a type of battery that uses lithium metal or lithium alloy as the negative electrode material and a non-aqueous electrolyte solution. Due to the highly reactive chemical properties of lithium metal, the processing, storage, and use of lithium metal require very high precision. With the development of microelectronics technology and the increasing miniaturization of devices, higher demands are being placed on power supplies, leading to the large-scale application of lithium batteries.

[0003] In related technologies, a lithium battery pack testing fixture is proposed, including a base. The lower end of the base is provided with two symmetrically arranged support plates, and the upper end of the base is provided with two symmetrically arranged fixing columns. Each of the two fixing columns has a cavity. A through groove is provided between the cavity and the side walls of the fixing columns. A rotating plate is rotatably connected to each of the through grooves. A plurality of circumferentially arranged connecting rods are slidably connected to each of the two rotating plates. The ends of the multiple connecting rods on the same side located outside the cavity are fixedly connected to a clamping plate.

[0004] The aforementioned technologies have the following drawbacks: the two clamps are pressed against the two sides of the lithium battery pack respectively, and the two clamps only contact the two sides of the lithium battery pack, resulting in a limited contact area. Therefore, in order to fix the lithium battery pack securely, the clamps exert a large force on the lithium battery pack, which can easily damage the lithium battery pack and affect its performance. Utility Model Content

[0005] The purpose of this application is to overcome the above-mentioned technical deficiencies and propose a clamp for testing lithium battery packs, which solves the technical problem that the clamping force is too large in the prior art and the lithium battery pack is easily damaged.

[0006] To achieve the above technical objectives, the technical solution of this application provides a fixture for testing lithium battery packs, including a support mechanism, wherein the support mechanism includes a support platform;

[0007] A first clamping mechanism, comprising a backing plate disposed on a support platform, the backing plate being provided with a limiting groove for accommodating a lithium battery pack;

[0008] A second clamping mechanism, comprising a strap, wherein through holes are provided between adjacent limiting grooves for the strap to pass through, the strap being used to abut against the lithium battery pack; and...

[0009] A drive mechanism is provided to drive the straps to move, thereby pressing the straps onto the lithium battery pack.

[0010] In some embodiments, a cushioning layer is provided on the side of the backrest near the strap.

[0011] In some embodiments, the strap is provided with reinforcing ribs that extend along the length of the strap.

[0012] In some embodiments, the drive mechanism includes a cylinder mounted on a support platform, the piston rod of which is connected to the end of the strap.

[0013] In some embodiments, a plurality of sliders are slidably connected to the back plate along the length direction of the back plate, and a plurality of through holes are respectively provided on the plurality of sliders. The back plate is provided with a fixing component for fixing the sliders.

[0014] In some embodiments, the fixing component includes a socket on the slider, a rod slidably connected in the socket, and a plurality of slots for receiving the rod are provided at intervals along the length of the back plate.

[0015] In some embodiments, the end of the insert near the backing plate is spherical.

[0016] In some embodiments, the end of the insertion rod away from the backing plate is provided with a handle.

[0017] In some embodiments, a spring is sleeved on the insertion rod, one end of the spring is connected to the insertion rod, and the other end of the spring is connected to the slider. The spring is in a stretched state, and the spring causes the insertion rod to tend to slide towards the plate.

[0018] In some embodiments, the surface of the strap is provided with a heat insulation layer.

[0019] Compared with the prior art, the beneficial effects of this application include: the design of the limiting groove and the strap can effectively fix the lithium battery pack, preventing the lithium battery pack from shaking or moving during the testing process, and the strap and the lithium battery pack have flexible contact, which reduces the possibility of damage to the lithium battery pack and improves the testing accuracy. Attached Figure Description

[0020] Figure 1 This is a first-view overall structural diagram of the testing fixture provided in this application;

[0021] Figure 2 This is a second-view overall structural diagram of the testing fixture provided in this application;

[0022] Figure 3 This is a third-view overall structural cross-sectional view of the testing fixture provided in this application.

[0023] Explanation of reference numerals in the attached figures:

[0024] 1. Supporting mechanism; 11. Supporting platform; 2. First clamping mechanism; 21. Backing plate; 22. Limiting groove; 23. Buffer layer; 24. Slider; 3. Second clamping mechanism; 31. Strap; 32. Through hole; 4. Drive mechanism; 41. Cylinder; 5. Fixing component; 51. Insertion hole; 52. Insertion rod; 53. Slot; 54. Ball; 55. Handle; 56. Spring. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0026] This application provides a fixture for testing lithium battery packs, the structure of which is as follows: Figure 1 - Figure 3 As shown, it includes a support mechanism 1, a first clamping mechanism 2, a second clamping mechanism 3, and a drive mechanism 4.

[0027] The supporting mechanism 1 includes a supporting platform 11.

[0028] The first clamping mechanism 2 includes a backing plate 21 disposed on the support platform 11, and the backing plate 21 is provided with a limiting groove 22 for accommodating the lithium battery pack.

[0029] The second clamping mechanism 3 includes a strap 31, and through holes 32 are provided between adjacent limiting grooves 22 for the strap 31 to pass through. The strap 31 is used to abut against the lithium battery pack.

[0030] The drive mechanism 4 is used to drive the strap 31 to move, so that the strap 31 is pressed tightly onto the lithium battery pack.

[0031] In use, the support platform 11 serves as the foundation of the entire testing fixture, providing a stable support platform for the lithium battery pack testing process. The backing plate 21 is located on the support platform 11, and when the lithium battery pack is to be placed, the limiting groove 22 on the backing plate 21 acts as a fixed reference. The lithium battery pack is placed in the limiting groove 22, which directly abuts against one side of the lithium battery pack, providing a horizontal positioning for the lithium battery pack and determining its initial position in that direction. One end of the strap 31 is fixed to the backing plate 21, and the other end passes through multiple through holes 32 spaced along the length of the backing plate 21. In the initial state, a space is formed between the strap 31 and the backing plate 21 to accommodate the lithium battery pack. When the lithium battery pack is placed on one side of the backing plate 21, it is located within this space. The drive mechanism 4 starts working, driving the strap 31 to move. As the strap 31 passes through the through holes 32, it gradually tightens under the action of the drive mechanism 4. The strap 31 moves around the lithium battery pack and toward the lithium battery pack, eventually pressing tightly onto the lithium battery pack, thereby firmly fixing the lithium battery pack between the limiting groove 22 and the strap 31.

[0032] In this application, the design of the limiting groove 22 and the strap can effectively fix the lithium battery pack and prevent the lithium battery pack from shaking or moving during the testing process. In addition, the strap 31 has a flexible contact with the lithium battery pack, which reduces the possibility of damage to the lithium battery pack and improves the testing accuracy.

[0033] To further reduce the possibility of damage to the lithium battery pack, please refer to Figure 1 In a preferred embodiment, a buffer layer 23 is provided on the side of the backrest 21 near the strap 31.

[0034] During use, the buffer layer 23 can buffer the pressure applied to the lithium battery pack by the strap 31. When the strap 31 is tightened, the pressure is evenly distributed on the surface of the lithium battery pack through the buffer layer 23, avoiding excessive local pressure that could damage the internal structure of the lithium battery pack.

[0035] To increase the strength of strap 31, please refer to... Figure 1 In a preferred embodiment, the strap 31 is provided with reinforcing ribs that extend along the length of the strap 31.

[0036] During use, when the drive mechanism 4 drives the strap 31 to clamp the lithium battery pack, the strap 31 needs to withstand a large tensile force. The reinforcing ribs can distribute the tensile force, preventing the strap 31 from over-stretching or even breaking during the stretching process. This allows the strap 31 to reliably apply a stable clamping force to the lithium battery pack, ensuring that the lithium battery pack is firmly fixed during testing.

[0037] To drive the strap 31 to move, please refer to... Figure 2In a preferred embodiment, the drive mechanism 4 includes a cylinder 41 disposed on the support platform 11, and the piston rod of the cylinder 41 is connected to the end of the strap 31.

[0038] In use, the piston rod of cylinder 41 is connected to the end of strap 31. At this time, strap 31 is in a relatively loose state, and the receiving cavity formed between the backing plate 21 and strap 31 is in an initial state where a lithium battery pack can be placed. When it is necessary to clamp the lithium battery pack placed in the receiving cavity, compressed gas is introduced into the air inlet of cylinder 41. Under the action of this thrust, the piston drives the piston rod connected to it to extend outward along the axial direction of cylinder 41. Since the piston rod is connected to the end of strap 31, the extension of the piston rod will pull strap 31. As the piston rod extends, strap 31 is gradually pulled. Because one end of strap 31 is fixed to the backing plate 21 and passes through multiple through holes 32 on the backing plate 21, under the pull of the piston rod, strap 31 will wrap around the lithium battery pack and gradually tighten. Strap 31 moves closer to the lithium battery pack and finally presses tightly on the lithium battery pack, realizing the clamping operation of the lithium battery pack.

[0039] To accommodate lithium battery packs of different sizes, please refer to [reference needed]. Figure 2 In a preferred embodiment, a plurality of sliders 24 are slidably connected on the back plate 21 along the length direction of the back plate 21, and a plurality of through holes 32 are respectively provided on the plurality of sliders 24. The back plate 21 is provided with a fixing component 5 for fixing the sliders 24.

[0040] In use, when testing lithium battery packs of different sizes, the operator manually slides the slider 24 along the length of the backing plate 21. By changing the distance between the sliders 24, the size and shape of the receiving cavity formed after the strap 31 passes through the through hole 32 can be adjusted. After the slider 24 is adjusted to the appropriate position, the fixing component 5 is used to fix the slider 24 to the backing plate 21. After the slider 24 is fixed, the stability of the size and shape of the receiving cavity is ensured, so that the lithium battery pack can be stably fixed in the receiving cavity during subsequent testing.

[0041] To fix slider 24 in place, please refer to... Figure 3 In a preferred embodiment, the fixing component 5 includes an insertion hole 51 provided on the slider 24, a rod 52 is slidably connected in the insertion hole 51, and a plurality of slots 53 for accommodating the rod 52 are provided at intervals along the length direction of the back plate 21.

[0042] In use, the insertion rod 52 is slidably connected within the insertion hole 51 of the slider 24, allowing it to slide freely within the hole 51. After the operator slides the slider 24 to a suitable position along the length of the backing plate 21 according to the size of the lithium battery pack, the insertion rod 52 is pushed from the insertion hole 51 of the slider 24 towards the backing plate 21. During this pushing process, the insertion rod 52 gradually approaches the slot 53 on the backing plate 21. The insertion rod 52 will eventually be accurately inserted into the slot 53 corresponding to the current position of the slider 24.

[0043] To make it easier for the insert 52 to slide into the slot 53, please refer to... Figure 3 In a preferred embodiment, the end of the insertion rod 52 near the backing plate 21 is spherical 54.

[0044] In use, the end of the ball 54 provides excellent guidance. When inserting the rod 52 into the slot 53 on the back plate 21, the end of the ball 54 is easier to align and contact with the entrance of the slot 53 compared to other shapes. Its rounded shape allows it to smoothly enter the slot 53, reducing the possibility of jamming or misalignment during insertion, making the insertion of the rod 52 into the slot 53 smoother and more convenient.

[0045] For easier pulling out of the insertion rod 52, please refer to... Figure 3 In a preferred embodiment, the end of the insertion rod 52 away from the backing plate 21 is provided with a handle 55.

[0046] When using the device, to fix the slider 24, the insert rod 52 needs to be inserted into the slot 53 on the back plate 21. The handle 55 provides the operator with a convenient grip and force application point. The operator can more easily grip the handle 55 and accurately push the insert rod 52 into the slot 53, which is more convenient and stable than applying force directly to the insert rod 52 body. When it is necessary to adjust the position of the slider 24 and pull out the insert rod 52, the handle 55 also makes it easier for the operator to apply the force required to pull out the insert rod 52, making the operation easier.

[0047] To improve the stability of pin 52, please refer to... Figure 3 In a preferred embodiment, a spring is fitted on the insertion rod 52, with one end of the spring connected to the insertion rod 52 and the other end connected to the slider 24. The spring is in a stretched state, and the spring causes the insertion rod 52 to tend to slide towards the backing plate 21.

[0048] In use, initially, the spring is in a stretched state, which exerts a spring force on the insertion rod 52 towards the backing plate 21. After sliding the slider 24 to the predetermined position, the insertion hole 51 aligns with the slot 53. Under the action of the spring's restoring force, the insertion rod 52 automatically springs back into the slot 53. This not only makes operation convenient, but also, under the action of the spring's restoring force, the insertion rod 52 is less likely to loosen from the slot 53, making the fixation more secure.

[0049] To reduce the possibility of damage to strap 31, please refer to Figure 3 In a preferred embodiment, the surface of the strap 31 is provided with a heat insulation layer.

[0050] During use, in the process of testing the lithium battery pack, the temperature around the strap 31 may rise due to the battery itself generating heat or the high temperature of the testing environment. The heat insulation layer can withstand high temperatures without deformation or melting, effectively protecting the main material of the strap 31 and ensuring that the strap 31 can maintain its mechanical properties under high temperature conditions and maintain its clamping function for the lithium battery pack.

[0051] To better understand this application, the following is combined with... Figure 1 - Figure 3 The working principle of a lithium battery pack testing fixture according to the technical solution of this application is described in detail: The support platform 11 serves as the foundation of the entire testing fixture, providing a stable support platform for the lithium battery pack testing process. The backing plate 21 is located on the support platform 11. When preparing to place the lithium battery pack, the limiting groove 22 on the backing plate 21 serves as a fixed reference. The lithium battery pack is placed in the limiting groove 22, which directly abuts against one side of the lithium battery pack, providing a horizontal positioning for the lithium battery pack and determining its initial position in that direction. One end of the strap 31 is fixed to the backing plate 21, and the other end passes through a plurality of through holes 32 spaced along the length of the backing plate 21. In the initial state, a space is formed between the strap 31 and the backing plate 21 that can accommodate the lithium battery pack. When the lithium battery pack is placed on one side of the backing plate 21, it is located within this space. The drive mechanism 4 starts working, driving the strap 31 to move. As the strap 31 passes through the through holes 32, it gradually tightens under the action of the drive mechanism 4. The strap 31 moves around the lithium battery pack and toward the lithium battery pack, eventually pressing tightly onto the lithium battery pack, thereby firmly fixing the lithium battery pack between the limiting groove 22 and the strap 31.

[0052] The specific embodiments described above do not constitute a limitation on the scope of protection of this application. Any other corresponding changes and modifications made based on the technical concept of this application should be included within the scope of protection of the claims of this application.

Claims

1. A fixture for testing lithium battery packs, characterized in that, include: The support mechanism includes a support platform; A first clamping mechanism, comprising a backing plate disposed on a support platform, the backing plate being provided with a limiting groove for accommodating a lithium battery pack; The second clamping mechanism includes a strap, and each adjacent limiting groove is provided with a through hole for the strap to pass through. The strap is used to abut against the lithium battery pack. A drive mechanism is provided to drive the straps to move, so that the straps are pressed against the lithium battery pack. The backrest has a cushioning layer on the side near the strap.

2. The fixture for testing lithium battery packs according to claim 1, characterized in that, The strap is provided with reinforcing ribs that extend along the length of the strap.

3. The fixture for testing lithium battery packs according to claim 1, characterized in that, The drive mechanism includes a cylinder mounted on a support platform, and the piston rod of the cylinder is connected to the end of the strap.

4. A fixture for testing lithium battery packs according to claim 1, characterized in that, Multiple sliders are slidably connected to the back plate along its length, and multiple through holes are respectively provided on the multiple sliders. The back plate is provided with a fixing component for fixing the sliders.

5. A fixture for testing lithium battery packs according to claim 4, characterized in that, The fixing component includes a socket on the slider, a rod is slidably connected in the socket, and a plurality of slots for accommodating the rod are provided at intervals along the length of the back plate.

6. A fixture for testing lithium battery packs according to claim 5, characterized in that, The end of the insertion rod near the backing plate is spherical.

7. A fixture for testing lithium battery packs according to claim 5, characterized in that, A handle is provided at the end of the insertion rod away from the backing plate.

8. A fixture for testing lithium battery packs according to claim 5, characterized in that, A spring is fitted onto the insertion rod, with one end of the spring connected to the insertion rod and the other end connected to the slider. The spring is in a stretched state, causing the insertion rod to tend to slide towards the plate.

9. A fixture for testing lithium battery packs according to claim 1, characterized in that, The surface of the strap is provided with a heat insulation layer.

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